Reproduction and Physiology

All Items

• Invited paper Ferritin and B12 in pregnant women: local experience and reflections on maternal nutrition from a public health perspective

  Helena Sobrero

  127-128
• Bioeconomic simulation of reproductive strategies in beef herds

  Rodrigo Andrade Ferrazza

  985-986
• Comparative assessment of the antioxidant potency of aqueous maca (lepidium meyenii) extract versus ascorbic acid, cysteamine, and glycine in the cryopreservation of caprine semen

  Rensson Homero Celiz Ygnacio, Josselin Rivas Flores, Mayrin Alonzo Santos, Emmanuel Sessarego Davila, Juancarlos Cruz Luis

  835-836
• Adaptive integumentary characteristics in three genetic groups of cattle

  Pamela Hernández-Delgado, Felipe Alonso Rodríguez-Almeida, Alan Álvarez-Holguín, Ernesto Ramos-Martínez, Joel Domínguez Viveros, Monserrath Felix-Portillo, Jose Alfredo Martinez Quintana

  533-534
• Effects of heat stress during late gestation on placental morphometry at term in primiparous and multiparous dairy cows

  Andrea Alvarez-Oxiley, Carlos Batista, Celmira Saravia, Laura Astigarraga, Elize van Lier, María Victoria Pereira Bernasconi

  333-334
• Synchronize with a luteolytic pattern improves prostaglandin efficiency and increases pregnancy rate in grazing cattle.

  Samia Citlali Juárez-García, Santiago Ramirez Vera, Armando Gómez Vázquez, Aldenamar Cruz Hernández, Yasmin Araceli Gálvez-Muñoz

  815-816
• Evaluation of synchronization protocols with injected progesterone in anovulatory cows of the Cundiboyacense plateau

  Marbel Yulieth Monroy González

  813-814
• Reproductive losses in purebred and crossbred Angus and Hereford cows under restrictive and non-restrictive grazing conditions

  Rodrigo Vivián Paradizo

  521-522
• Effect of seminal plasma application on embryo quality on day 3 post-copulation in alpacas (Vicugna pacos)

  Wilfredo Huanca, Aida Cordero Ramirez

  809-810
• Impact of heat stress on seminal quality of Braford bulls

  Carolina Decimo de Moura, Laura Girardi, Giovana Giacomelli, Marcela Kuczynski da Rocha, Silvio Renato Oliveira Menegassi, Júlio Otávio Jardim Barcellos

  317-318
• Effect of oral supplementation with multi-strain probiotic on biochemical and immunological parameters in dairy cows during the transition period.

  Alex Marcelo Muñoz Salvo, Isabela Pérez Núñez, Gastón Sepúlveda, Rommy Díaz, John Quiñones, David Cancino, Néstor Sepúlveda

  307-308
• Design and validation of a protocol to assess immune resilience in dairy cows

  Ana Clara Panissa, Mercedes Garcia-Roche, Ana Inés Trujillo, Ana Laura Astessiano

  303-304
• Targeted supplementation during mid-gestation in sheep grazing natural fields efecto sobre la expresión de genes relacionados al desarrollo y función muscular de la progenie

  Ana Cecilia Vidal, Ana Laura Asstesiano, Clara Panissa, Alejandro Bielli, Raquel Perez-Clarget, Ana Ines Trujillo, Javier Ithurralde

  785-786
• Evaluation of the Pampinta x Dorper cross in off-season service

  Romina Beierbach, Marcelo Ruben Real Ortellado, Ana Clara Gonzalez

  783-784
• Undernutrition and maternal parity, but not their interaction, influence the weight and body dimensions of lambs at birth.

  Valentina Ballesteros

  493-494
• Effects of long-term fetal programming on metabolic fiber types in sheep

  Javier Ithurralde

  489-490
• Influence of calving season on the metabolic status and milk production of Holstein cows in pastoral dairy systems in Uruguay

  Karen Cruz Freitas, Diego Ubios, Andrea Fernández, Grethel Ruprechter, Alejandro Mendoza, Gustavo Gastal

  481-482
• Effect of the SLICK1 genotype on HAMP and HSPB8 expression in Holstein cow tissues

  Esbal Jimenez

  769-770
• The age of the ewe influences the birth weight of the lambs and prolificacy, with no differences between 18 and 30 month old mothers in extensive systems.

  Raquel Pérez Clariget

  477-478
• Natural shade access can attenuate heat stress: physiological responses in the dry period and carry-over effects on subsequent lactation

  María Victoria Pereira-Bernasconi, Celmira Saravia, Carlos Batista, Ezequiel Jorge-Smeding, Richard Möller, Maximiliano Cedrés, Laura Astigarraga, Ricardo Rodriguez-Palma, Andrea Alvarez-Oxiley

  289-290
• The twin condition exacerbates the effects of intrauterine nutritional restriction on the metabolome in aged ewes.

  Raquel Pérez Clariget

  279-280
• Problems in reproductive management on farms

  Luan Filipe Chaves Da Silva Lima, Adriana Luize Bocchi, Aline Oliveira de Matos , Rafaella Cabral Pimenta, Leonardo Fiorin Zaninetti, José Miguel Fraga Santana

  893-894
• Late embryonic/early fetal losses in British-bred heifers on a commercial farm in Uruguay

  Monica Rodriguez Sabarrós, Ana Carolina Espasandín

  267-268
• Is a 45-day voluntary waiting period a strategy for any herd?

  Edgar Alain Collao-Saenz, Lana Oliveira Plassa

  891-892
• Growth index, sectorial weight gain, and body symmetry indicators in the Buffalypso (Bubalus bubalis) in Panama

  Josue Vanegas, Edil Enrique Arauz Santamaria, Jose Norato, Alirio Colmnares, Yocelyn Rodriguez, Gustavo Crudeli, Exequiel Patiño

  461-462
• Preliminary Evidence of Heat Stress Effect on Placentome Morphometry in Beef Cows

  Carlos Batista, Florencia Presentado, Victoria Pereira, Celmira Saravia, Richard Möller, Elize van Lier, Ricardo Rodríguez-Palma, Gimena Silvestri, Andrea Alvarez-Oxiley

  265-266
• Effects of maternal nutritional supplementation from day 70 of gestation on diameter, epithelial height, and thickness of the muscular layer of the cauda epididymal duct in 140-day-old lambs

  Graciela María Pedrana

  83-84
• Heat distribution in ewes during an autumn service: Effect of ram introduction

  Mauro Tavares, Raquel Pérez Clariget

  737-738
• Effects of inhalation of ACALMA® essential oil blend in lactating cows on hematological parameters

  Geovana Sartori, Beatriz Chinelatto Santos, Sandra Maria Simonelli, Rafael Fagnani, Odimári Calixto

  445-446
• Effects of inhalation of ACALMA® essential oil blend in lactating cows on milk composition

  Geovana Sartori, Beatriz Chinelatto Santos, Sandra Maria Simonelli, Rafael Fagnani, Odimári Pricila Prado Calixto

  133-134
• Variability in body condition score and reproductive parameters associated with calving season in pastoral dairy systems in Uruguay

  Karen Cruz Freitas, Diego Ubios, Alejandro Mendoza, Gustavo Gastal

  427-428
• Project loss due to prolonged semen storage

  Luan Filipe Chaves Da Silva Lima

  695-696
• Influence of type of delivery on mortality of lambs up to weaning

  Andreza Bordim de Oliveira, Matheus Spiniella Avelino, Isabelle Cristina da Silva Fernandes, Mônica Machado Barbosa, Graziela Zacariotto Sussai, Ana Vitoria Reis Silva, Luis Fernando Carneiro Araújo, Ricardo Lopes Dias da Costa

  213-214
• Influence of ewe body condition score at lambing on lamb weight at birth and weaning

  Andreza Bordim de Oliveira, Matheus Spiniella Avelino, Isabelle Cristina da Silva Fernandes, Mônica Machado Barbosa, Graziela Zacariotto Sussai, Ana Vitoria Reis Silva , Luis Fernando Carneiro Araújo, Ricardo Lopes Dias da Costa

  209-210
• Zootechnical and reproductive parameters in first-time females of improved guinea pigs fed with levels of 0 to 1.5% of mineral salts in their diet

  Jordano Jhair Venegas, Patricia Falconí Salas

  679-680
• Impact of late summer shearing on scrotal temperature, testicular blood flow, and testosterone secretion in Corriedale rams

  Maria Madeleine Guerrero, Livia Pinto Santini, Danilo Fila, Aline Freitas-de-Melo, Julia Giriboni, Rodolfo Ungerfeld

  187-188
• Growth trajectories of Braford calves and their effect on reproductive development

  Thais Devincenzi, Juan Andrés Dufort, Martin Sorondo, Graciela Quintans

  675-676
• Can carbetocin administration before electroejaculation improve the quality of fresh semen in bulls?

  Juan Carlos Orihuela, Andrea Pinczak, Rodolfo Ungerfeld

  667-668
• Semen collection schedule, sexual behavior, and fresh semen quality in rams

  Juan Carlos Orihuela, Valentina Reyes Acosta, Livia Pinto Santini, Madeleine Guerrero, Rodolfo Ungerfeld

  205-206
• Main causes of the annual culling of female bovine and their bioproductive implications in specialized dairy farms in Panama

  Ingrid Saldaña, Edil E. Arauz, Neftali Aparicio, Reinaldo de Armas

  201-202
• Typing of the somatic, reproductive and lactopoietic profile of the Jersey breed in the first three lactations according to altitude and ITH in a tropical climate

  Edil E. Arauz, Blas Mela Navarro, José I. Norato

  199-200
• Biothermal and cardiorespiratory alterations and modification of passive thermolysis in Fleckvieh bulls housed under tropical heat stress

  Edil E. Arauz, Eduardo E. Araúz Yángúez, Luis Edil Cuevas, Jacob Franco, Amy Santamaría, Reinaldo De Armas Tabuada, Gerardo Sandoya, Arturo G. Fuentes, Héctor D. Cedeño

  197-198
• Evaluation of the movement pattern during service of bulls of different ages

  Martin Bonamy

  189-190
• Effect of supplementation with a super dose of organic zinc to Pelibuey rams on their seminal characteristics

  Carlos Adán Palma-Urías, Lorenzo Buenabad, Juan González Maldonado, René Antonio Ramírez-Sosa, Felipe Alonso Rodríguez-Almeida, Martín Adolfo Orozco-López, Jose Alfredo Martinez Quintana

  657-658
• Effect of post-breeding supplementation on fertility in Hereford heifers.

  Jorge Gil Laureiro, Felipe Becerra, Alvaro Filippini, Francisco Leiva

  649-650
• Monitoring ovarian and mating activity in breeding herds using heat-detecting tags.

  Jorge Gil Laureiro, Virginia Ramírez, Cristian Gamarra, Valentina Biassini, Eduardo Blanc

  639-640
• Effect of Water Restriction on Physiological Parameters and Reproductive Hormones in Suffolk Down Ewes in Chile

  Lina Maria Correa Estrada

  179-180
• Estrus induction outside the breeding season in Anglo-Nubian goats according to the source of eCG (natural or recombinant)

  Laura Simonetti, Mercedes Ghibaudi, Laura Fernández, Milena Forspaniak, Candelaria Ramos Laino, Alana Sosa, Iván Verboven, Paulina Cerra

  633-634
• Hematological Responses of Brahman, Gyr, and Romosinuano Cattle to the Colombian Lowland Tropical Environment

  Rafael Otero-Arroyo, Matheus Soares da Silva Ferreira, Darwin Hernández-Herrera

  157-158
• E-cadherin distribution pattern in in vitro matured oocytes and parthenogenetic embryos of domestic sheep (Ovis aries)

  Alfredo Trejo Córdova, Yair Alejandro Gutiérrez Díaz, David Sánchez Álvarez, José Roberto Vázquez Avendaño, Demetrio Alonso Ambriz-García, Elisabeth Solís Badillo, Maria del Carmen Navarro Maldonado

  613-614
• Quality of cloned bighorn sheep embryos produced by HMC from domestic sheep oocytes treated with resveratrol

  José Roberto Vázquez Avendaño, Demetrio Alonso Ambriz-García, Alfredo Trejo Córdova, José Antonio Sandoval Zárate, Fernando Gual Sill, Jessica Elivier Nuñez Macias, Miriam Fahiel Casillas Avalos, Maria del Carmen Navarro Maldonado

  611-612
• Influence of the lunar cycle on first service conception rate in dairy cows: effects of region, year, season, insemination method, age, and days in milk

  Fernando Pedro Perea Ganchou, Rodolfo Ungerfeld, Sergio Kmaid

  989-990
• Lunar cycle influence on first-service fertility in dairy heifers: effects of age, region, season, and year of insemination

  Fernando Pedro Perea Ganchou, Rodolfo Ungerfdeld

  603-604
• Seasonal variations in milk production and fertility in Holstein cows in dairy herds located in the desert

  Ricardo Gutiérrez Fonseca, Jorge Fernández, Raúl Ulloa-Arvizu, Ilda Graciela Fernández García

  371-372
• Physiological response of rabbits to a thermoducting environmental enrichment during variable environmental stress conditions.

  Diego Carrillo-González, Adrián Medina, Darwin Hernández, Yasser Lenis

  145-146
• Analysis of semen quality in boar by computer systems in tropical conditions

  Francisco Sevilla Benavides, Ignacio Araya-Zúñiga, Anthony Valverde

  591-592
• Reference intervals for electrolytes and serum pH in adult alpacas (Vicugna pacos, Linnaeus 1758) raised in Uruguay

  Beatriz Mernies, Virginia Méndez, Bibiana Cuñarro, Jair Millán Orozco, María Soledad Valledor, Martín Lima

  21-22
• Refining freezing techniques to enhance post-thaw sperm functionality in bovine semen

  Laura Murillo, Francisco Sevilla, Ignacio Araya-Zúñiga, Miguel A Silvestre, Anthony Valverde

  589-590
• Pregnancy loss in cattle

  Roberto Sartori, Lucas Oliveira e Silva, Taynara Jaqueline Barreiro da Silva, Rodrigo Lemos Olivieri Rodrigues Alves, Carlos Eduardo Cardoso Consentini, Leonardo de França e Melo

  45-61
• Management strategies to mitigate adverse effects in early postpartum in grazing dairy cows in the Ecuadorian high tropics

  Juan P. Garzón , Hendry Patiño, Pablo Roberto Marini, Diego A. Galarza, Fernando P. Perea

  31-43
• Precision reproduction: achieving high reproductive performance and profitability in beef cattle

  Leonardo de França Melo, Lucas Oliveira e Silva, Rodrigo Lemos Olivieri Rodrigues Alves, Carlos Eduardo Cardoso Consentini, Roberto Sartori

  19-29
• Recombinant heat shock protein HSPA1A increases cryoresistance of bull sperm

  José L. Sancho, Edison P. Carrión, Estefany M. Largo, Heydi I. Pando, Mauricio Duma, Antonio J. Vallecillo, Diego A. Galarza

  121-126
• Ovarian morphometry, corpus luteum and progesterone concentration during pregnancy in the guinea pig

  Gisela Gañán, Fernanda Munzón, Luis Ayala, Gabriela S. Garay

  117-120
• Extracellular vesicles: Mediators in bovine maternal-embryonic interaction

  Yulia Nathaly Cajas, Kevin Burbano Espín, Maria Encina Gonzalez Martínez, Karina Cañon-Beltran

  63-78
• Reproductive behaviour of the creole goat managed extensively in the different altitudinal levels of the dry tropic of southern of Ecuador-South America

  Edgar Aguirre, Miguel González-Muñoz, Cesar Benavidez-Silva

  155-161
• Induction of estrus with male effect, using vasecomized rams associated or not with ewes in heat in Merino ewes during seasonal anestrus: practical experiences in Uruguay

  Eduardo Lorenzelli, Rodolfo Ungerfeld

  29-35
• Comparison of two methods to measure the area of ultrasonography images of corpus luteum in sheep

  Sol Lafourcade, Juan Pedro Bottino, Marcelo Ratto, Rodolfo Ungerfeld

  305-309
• Spontaneous recovery in dairy cows with subclinical endometritis

  Emanuel Adrián Frana Bisang, Ivana Barbona , Pablo Roberto Marini, Maria Isabel Vázquez

  299-303
• In vitro embryo production in beef cattle, under dry tropical conditions: effect of breed

  Francisco Javier Trejo Meza, Hilario Del Angel Reyes, Juan Rosales Hilario, Yuridia Bautista Martínez, Miguel Ruíz Albarrán, Arnoldo González-Reyna

  61-65
• Artificial insemination and fixed-time embryo transfer in beef cattle under dry tropical conditions

  Jorge Luis Flores Rodríguez, Francisco Javier Trejo Meza, Hilario Del Angel Reyes, Juan Rosales Hilario, Libia Ivonne Pérez Torres, Hugo Brígido Barrios García, Arnoldo González-Reyna

  51-56
• Effect of eCG on in vitro embryo production in beef cattle in the dry tropics

  Lizeth Montserrat Medina Pérez, Francisco Javier Gutiérrez Piña, Francisco Javier Trejo Meza, Alejandro Espinoza Canales, Alberto Muro Reyes, Arnoldo González-Reyna

  67-72
• Reproduction biotechnology in beef cattle and its application in Northeast Mexico: follicular aspiration and in vitro fertilization

  Francisco Javier Trejo Meza, Juliano Franco De Souza, Juan Rosales Hilario, Hilario Del Angel Reyes, Aime Rodríguez Perales, Froylan Andrés Lucero Magaña, Arnoldo González-Reyna

  383-388
• Fertility and prolificacy of sheep synchronized with Fluorogestone Acetate

  Maximino Méndez Mendoza , Néstor Méndez Palacios, Alejandro Córdova Izquierdo

  29-34
• Effect of climate on superovulatory response, quality and stage of embryonic development in tropical cattle.

  Javier Hernández Ignacio, Rodrigo González Gómez, Itzayana Mejia Flores

  57-60
• Evaluation of two commercial media used in semen cryopreservation on the motility and viability of reparo bulls.

  Itzayana Flores, Natalia Chiquete-Félix, Javier Hernández Ignacio, Diana Laura Rangel Ramírez

  39-43
• Effect of reduced glutathione (GSH) on the sperm quality of verraco under subhumid tropic conditions

  Nancy Patricia Abrego-Salgado, Jose Herrera-Camacho, Efren Estrada-Paqui, Juan Carlos Tinoco-Magaña, Miguel Ángel Bautista Hernandez

  73-79
• Synchronization of estrus in multiparous ewes with CIDR of first, second and third reuse

  Susana López-García, María Teresa Sánchez-Torres Esqueda, José Luis Cordero-Mora, José Luis Figueroa-Velasco, José Alfredo Martínez-Aispuro, Teódulo Salinas Ríos

  21-27
• Inclusion of polyunsaturated fatty acids in the diet for superovulated hair sheep

  Guadalupe Adilia Delgado Tiburcio, Cesar Cortez-Romero, Arturo Pro-Martínez, José Antonio Hernández-Marín, Jaime Gallegos-Sánchez

  15-20
• Proposal to rescue the Criollo Limonero breed in Venezuela

  Omar Araujo-Febres

  363-367
• Characteristics of follicular wave development in prepubertal Bos taurus indicus heifers of two different body sizes

  Jorge Padilla Lopez, Carlos Hernandez Lopez, René Calderon Chagoya, René Carlos Calderon Robles, Ruben Santos Echeverria, Ángel Rios Utrera

  45-50
• Characterization of sexual behavior in hair rams subjected to two controlled matings during the reproductive season

  Keyla Mauleón Tolentin, Fernando Sanchez Davila, Cecilia Zapata Campos, Carlos Luna Palomera, Jose F. Vásquez Armijo, Jurai Grizelj

  9-13
• Effect of extender on sperm quality of refrigerated ovine semen

  Alejandro Córdova Izquierdo, Abel Edmundo Villa Mancera, Armando Gómez Vázquez, Carlos Bedolla Cedeño, Jaime Olivares Pérez, Pedro Sánchez Aparicio, María de Lourdes Juárez Mosqueda, Raúl Sánchez Sánchez

  5-7
• Vaginally use of iButton loggers to measure body temperature in grazing red deer (Cervus elaphus)

  Lorenzo Alvarez Ramirez, Gabriela Arteaga-Salazar, Alejandra Sánchez-Cervantes

  187-194
• Effect of L-carnitine and melatonin on cryosurvival and fertility of spermatozoa of creole roosters (Gallus gallus domesticus)

  Diego Andrés Galarza Lucero, Luis M. Guachichullca, Juan P. Hernández

  107-110
• Royal jelly supplementation to freezing and vitrification media improves cryosurvival of bull spermatozoa

  Luis Galarza-Álvarez, Jacqueline Guanga, Juan Lucero, Xavier Samaniego, Diego Andrés Galarza Lucero

  87-89
• Uterine inflammation of the postpartum cow. Easier said than done...

  Roberto Palomares

  31-49
• Artificial insemination strategies in cattle: From the conventional to the use of sexed semen

  Armando Quintero

  21-30
• Fertility evaluation of pelibuey ewes under three levels of equine chorionic gonadotropin (eCG) aplication using two synchronization protocols

  Miguel A. Gastelum Delgado

  119-121
• Sexual development in taurine, indicus and crossbred F1 bulls in Brazil

  Gustavo E. Freneau, Jose Domingos Guimarães, Vicente Ribeiro Vale Filho

  171-186
• Comparison of two doses of FSHp in superovulation of Pelibuey ewes

  Juan C. Alvarado, Daniel E. Argudo, Andrés L. Moscoso, Hugo J. Hernández-Fonseca , Fernando P. Perea, José. M. Rodríguez

  99-101
• Pregnancy survival in Holstein cows associated with parity and biotype in Uruguay

  Juan P. Garzón , Waldemir Santiago Neto, Victoria Urioste, Marcelo Pla, Eduardo Vidal, Santiago Fariña, Gustavo D.A. Gastal

  83-86
• Seminal evaluation of rabbits subjected to a continuous lighting program

  Daniel Ernesto Argudo Garzon, Alexandra Eras, Juan C. Alvarado, Andrés L. Moscoso, Dina. M. Veloz

  103-105
• First service conception rate in cows resulting from alternating crossbreeding between Brahman Red and Holstein Red according to breed predominance, generation (dams and daughters), and calving season

  Fernando Pedro Perea Ganchou, Eleazar Soto-Belloso, Daniel A. Perdomo, Mariana S. Perea, Roberto A. Palomares, Juan C. Gutiérrez, Hugo Hernández-Fonseca

  79-82
• Evaluation of a simplified protocol of superovulation in Holstein cows in production with sexed and conventional semen

  Daniel Ernesto Argudo Garzon, Luis M. Sánchez , Joselyn E. Chauca, Juan C. Alvarado, Andrés L. Moscoso, Carlos A. Soria

  75-77
• Effect of the energy level of the diet in the last third of gestation on the productive and reproductive performance of beef cows and their offspring. Nutrición preparto y desempeño de la vaca y su descendencia

  Carlos Batista, José Ignacio Velazco, Graciela Quintans

  331-329
• Animal Reproduction

  Managing Editor
• Improved recovery of frozen-thawed bovine spermatozoa selected via standardized swim-up technique

  Juan R. Correa, Panayota N. Zarmakoupis-Zavos , Panayiotis M. Zavos

  101-112
• Embryonic signals and placental hormones: molecular bases and potential use for the diagnosis and followup of gestation in farm animals

  Andrea Alvarez-Oxiley

  155-178
• Modelling the reproductive performance of tropical beef cattle using long-term grazing experimental data on Urochloa humidicola pastures in the Llanos of Colombia

  Raul R. Vera, Carlos Alberto Ramírez-Restrepo

  225-237
• Reproduction and milk yield of Holstein cows in the US Virgin Islands as influenced by time of year and coat color

  Robert W. Godfrey , Peter J. Hansen

  31-44
• Productivity of the sow: Factors Affecting Litter Size

  Hugo Juan Petrocelli, Roberto Bauza, Jorge Sánchez

  147-159
• Synchronization with two doses of PGF2α in dry Hereford cows and Hereford and Holstein heifers

  Juan B. Rodriguez Blanquet, H. Chiarino

  9-14
• Scrotal circumference and body measurements of Hereford and Braford bulls from Northeastern Argentina

  Natalia Mercedes Vallejos, Araceli Rocio Marisel Gonzalez, Gustavo Angel Crudeli, José Luis Konrad, Celia Raquel Quirino

  215-223
• Evaluation of body and testicular measurements in Dorper sheep at different ages

  Thaís Fitaroni Lacerda, Carolina Freitas Rosa e Paula , Natalia Mercedes Vallejos, Celia Raquel Quirino

  205-213
• Probability of pregnancy before ninety days postpartum in water buffaloes

  Hector Nava-Trujillo, Robert Valeris-Chacin, Adriana Morgado-Osorio, Javier Hernández, Janeth Caamaño, Armando Quintero Moreno

  29-34
• The duration of treatment with intravaginal sponges impregnated with medroxyprogesterone in the reproductive season influences the response to oestrus synchronization in Corriedale and Merino ewes

  Raquel Pérez Clariget, Carlos López Mazz, María Belén López Pérez, Álvaro López Pérez

  29-36
• Reproductive characterization of the Criollo-Neuquino goat breed

  Marcela Cueto, María Rosa Lanari, Paula Silvestre, Maria Macarena Bruno-Galarraga, Jimena Fernández, Alejandro Gibbons

  199-214
• The Slick Holstein as an alternative to cope with heat stress in tropical dairy operations

  Bianca Ortiz-Uriarte, Natalia Rosa-Padilla, Rafael López-López, Jaime Curbelo-Rodríguez, Verónica Negrón-Pérez, Guillermo Ortiz-Colón

  145-153
• Current status of the Animal Germplasm Bank in Colombia: organization and management

  Hugo R. Jimenez, Diego H Bejarano, Jose Henry Velazquez Penagos, Eliana Neira Rivera, Luisa A. Rugeles Barandica, Carolina Gonzalez Almario

  151-162
• Quality and in vitro fertility of Uruguayan Criollo bulls’ semen cryopreserved in two commercial diluents

  Yael Filipiak, Eileen Armstrong, Rafael Aragunde, Danilo Fila, Jorge Alvaro Gil Laureiro, Valentina Alvarez, Marcos Pereira, Juan C. Boggio, Clara Larocca, Fernando Vila, María Silvia Llambi Dellacasa

  133-143
• Evaluation of an outdoor production system: 1. Sow performance until birth.

  Hugo Petrocelli, Cecilia Carballo, Nelson Barlocco

  47-57
• Effect of two energy levels during the last third of gestation of beef cows on characteristics of the placenta and offspring at birth.

  Carlos Batista, José Ignacio Velazco, Fernando Baldi, Georgget Banchero, Graciela Quintans

  9-18
• Calving at the beginning or end of winter in nulliparous ewes: effects on maternal behavior and that of their progeny

  Raquel Pérez Clariget, María Soledad Orcasberro

  29-38
• Reproduction, Physiology and Genetics/Reproducción, Fisiología y Genética/Reprodução, Fisiologia e Genética

  Managing Editor
• Reproduction, Physiology and Genetics

  Managing Editor
• Histological characterization of the utero-placental membranes of alpaca

  Luis Olivera Marocho
• Reproductive biotechnologies in domestic South American camelids: advances and perspectives

  Wilfredo Huanca, Aída Cordero, Teodosio Huanca Manami, Gregg P. Adams
• INIA's experience in strengthening the domestic camelid germplasm bank

  Teodosio Huanca Mamani, N Apaza, Mario Lino Gonzales Castillo
• Nutritional strategies to improve reproductive performance in beef cows

  Raquel Perez Clariget, Mariana Carriquiry, Pablo Soca
• In vitro fertilization: alternative for genetic improvement in cattle

  P. G. Herradón, L. A. Quintela, J. J. Becerra, S. Ruibal, M. Fernandez
• Application of the bovine model for the study of ovarian function in other species

  Gregg P. Adams
• Reproductive records of two rabbit farms in the Tuxtepec-Oaxaca region, Mexico

  Alfredo Trejo Cordova, Demetrio Alonso Ambriz García, Sergio Ramirez Ordoñez, Víctor Manuel Meza Villalvazo

  21-26
• Management of reproductive seasonality in small ruminants

  Rodolfo Ungerfeld
• Animal reproduction and physiology/Reproducción y Fisiología/Reprodução e Fisiologia

  Managing Editor
• Environmental factors and sexual development of rams and goats

  Rodolfo Ungerfeld
• Implicancias del Test de Endósmosis en la evaluación del semen de carnero preservado en condiciones de campo

  Melina Castillo, Dante Alberto Cerutti, María Bettina Gómez, Humberto Cisale
• Seminal plasma levels added to a Tris-based diluent for refrigerated sheep semen: results of the hyposmosis test and pregnancy rate

  H. Bueno-Larroque, Raquel Perez Clariget, Alvaro Lopez
• Reproducción animal - Carteles

  Managing Editor
• Reproducción animal - Orales

  Managing Editor
• Effects of heat stress on milk yield of primiparous Holstein cows at regional scale using large data bases

  Gabriela Silvia Cruz, Jorge I. Urioste, Celmira G. Saravia
• Addition of reduced glutathione to diluent of lamb semen during storage (5 °C)

  Alfredo Trejo Cordova, Sergio Ramírez Ordoñes, Víctor Manuel Meza-Villalvazo, Ismael Abad Benítez
• Managing reproductive seasonality in small ruminants

  Rodolfo Ungerfeld
• Luteotrophic effect of OIF/NGF in llamas

  Marcelo Ratto Fuster
• Trabajos Cortos: Reproducción

  Assistant Editor
• Programación fetal en el cordero: efecto de la restricción en la nutrición intrauterina

  Raquel Perez Clariget, Maria Jose Abud, Javier Ithurralde, Patricia Genovese, Andrea Alvarez Oxiley, Victoria Riaño, Maximiliano Torres, Sebastián Montaldo, Sergio Ramírez, Álvaro López, Alejandro Bielli
• Comparison of two methods of progesterone application in a fixed time artificial insemination protocol in beef cows

  Alfredo Irazábal, Raquel Pérez Clariget, Carmen de Olarte, Guillermo de Nava, Daniel Cavestany
• Control of estrus in Bos indicus cattle under tropical conditions. Effect of utilization of Norgestomet combined with estrogens

  Antonio Ismael Porras Almeraya, Carlos S. Galina Hidalgo, Luis Alberto Zarco Quintero

  175-185
• Descriptive characteristics of estrus in dairy cows during winter and summer in Puerto Rico

  C. J. Gonzalez, John Fernandez, Ernesto Riquelme Villagrán, Esteban Burguete Hernandez

  163-174
• Reproductive performance of rabbit does fed diets based on Leucaena leucocephala

  Ana T. Rivera, Ernesto Riquelme Villagrán, John Fernandez

  147-161
• Combined use of tail-paint and prostaglandin in cyclic dairy cows: proposal to maximize efficiency and accuracy in heat detection

  Alberto Raúl Dick
• Valuation of asymmetric IgG antibodies in swine serum and placental extracts

  Adriana del Carmen Garro, Maria Teresa Gentile, Mirta Adriana Koncurat
• 

  Localization of progesterone receptor isoform A in the uterus of non- pregnant sows and maternal placenta during early gestation

  María del Carmen Viglierchio, Sara Inés Williams, Mónica Graciela García, Daniel Vicente Lacolla, Vanina Nerea Murcia, Graciela Noemí Yaful
• Conservation of ram semen at 5 ºC using medium supplemented with 0.5, 1.0 and 5.0 mM of reduced glutathione

  Alfredo Trejo Cordova, Ismael Abad Benítez, Víctor Manuel Meza Villalvazo, Carolina Antonia Estrada, Abel Villa Mancera
• Detection of fibronectin during porcine placentation

  Carolina Lucía Vélez, Delia Williamson, Mirta Koncurat
• Reproductive efficiency in wool sheep artificially inseminated by the cervical or intrauterine method with fresh semen

  Nicacia Hernández Hernández, Juan Carlos Martínez González, Martín Antonio Ibarra Hinojosa, Florencio Briones Encinia, Panfilo Saldaña Campos
• Metabolites in the cervical mucus of dual purpose cows in natural and induced estrus

  Juan Carlos Martínez Gonzalez, Pedro Azuara-Bautista, Froylán Andrés Lucero-Magaña, Sonia Patricia Castillo-Rodríguez, Arnoldo González-Reyna
• Embryonic development of Angel fish (Pterophyllum scalare)

  Marcella Costa Radael, Manuel Vazquez Vidal Junior, Luis David Solis Murgas, Douglas da Cruz Mattos, Leonardo Demier Cardoso, Jonas Henrique de Souza Motta, Matheus Abreu, Viviane de Oliveira Felizardo, Dalcio Ricardo Andrade
• Clinical evaluation of the puerperium of primiparous Nelore cows

  Danila Fernanda Rodrigues Frias, Diego Rodrigues Pereira, Hélio Muniz Simon, Dora Inés Kozusny-Andreani
• Reproductive biotechnologies in domestic South American camelids as alternatives for genetic improvement

  Wilfredo Huanca Lopez
• Alternatives to improve the reproductive performance of crossbred cattle (Bos taurus x Bos indicus)

  Wilfredo Huanca
• Effects of time of parturition, shearing and flushing on lambing to estrus interval in Polwarth ewes.

  F. Ebling Rodrigues, Luis Carlos de Oliveira Fernandes

  17-21
• Laparoscopic intrauterine insemination of frozen sheep semen in a gel solvent based on the Aloe vera plant

  Fernando Rodríguez, John N Stellflug, Jim A. Fitzgerald

  9-15
• The challenges in reproductive management of South American camelids

  Wilfredo Huanca
• Evaluation of llama sperm chromatin preserved using different methods of conservation

  María Ignacia Carretero
• Energy feeding strategies to shorten the postpartum anoestrous in grazing dairy cows

  Alejandro Mendoza, Daniel Cavestany, A. La Manna, Pablo Chilibroste, A. Meikle
• Reproduccion Animal

  Editor Index
• Sperm reservoir in the oviduct of llama and progress in the study of the proteolytic systems involved

  Silvana Andrea Apichela
• Effects of two space allowances on cortisol levels, agonistic behavior and their relationship with the ovarian cycle of the collared peccary (Pecari tajacu) in captivity

  Ruben Cornelio Montes-Perez, Lourdes Kuri Melo, José Mukul Yerves, José C. Segura-Correa, Fernando G. Centurión Castro
• Technical note: Productive variables of Pelibuey lambs and ewes induced to estrus with exogenous hormones and with different types of suckling

  Francisco Javier Franco Guerra, Jorge Ezequiel Hernandez, Oscar Agustin Villareal Espinobarros, Carlos Quiroz Ruiz, Jaime Gallegos Sanchez, Julio Cesar Camacho-Ronquillo
• Duration of estrus and preovulatory surge of LH in Boer x Nubian goats synchronized with various hormones in tropical latitude of Mexico

  José del Carmen Rodríguez-Castillo, Arturo Pro-Martínez, Arnulfo Villanueva-C., Jaime Gallegos-Sánchez
• Factors affecting reproductive response in anestrous crossbred cows treated with intravaginal progesterone or calf removal for 120 hours

  Fernando Pedro Perea Ganchou, Roberto Palomares Naveda, Aitor De Ondiz, Hugo Hernández Fonseca, Doraida Díaz, Rumualdo González, Germán Portillo, Eleazar Soto Belloso
• Caracteristicas reproductivas de ovejas Pelibuey sincronizadas e inducidas a la pubertad

  Julio Cesar Camacho Ronquillo, Jose del Carmen Rodríguez Castillo, Jorge Ezequiel Hernandez Hernandez, Arturo Pro Martinez, Carlos Miguel Becerril Perez, Jaime Gallegos Sanchez
• Relationship between productive and reproductive parameters of dairy cows in different production systems

  Elbio Joaquín Dutour Pérez, L. M. Melucci
• Efeito da Idade e de Fazenda Sobre as Características Seminais e Perímetro Escrotal em Touros da Raça Guzerá Criados no Norte e Noroeste do Rio de Janeiro/Brasil*

  Aline Pacheco, Celia Raquel Quirino, José Frederico Straggiotti Silva, Isabel Candia Nunes da Cunha, Carlos Henrique Bucher
• Accuracy of transrectal ultrasonography for evaluation of corpora lutea in hair sheep

  Ignacio Contreras-Solís, Thaís Díaz, Gustavo López, Allan Caigua, Herakles García, Alejandro Salvador, Antonio González-Bulnes
• Deterministic and stochastic models to embryo transfer programs in bovine

  Luis Gustavo Barioni, Renato Travassos Beltrame, Celia Raquel Quirino, Danieli Rankel Fernandes
• Effect o energy levels in diets of constant energy: protein ratio on performance, metabolism and thyroid hormones of broilers

  Otto Mack Junqueira, Nadja Susano Mogyca Leandro, Marcos Macari, Lucio Francelino Araujo, Cristiane Soares da Silva Araujo
• Milk production with oxytocin in dual purpose cows under Mexican humid tropic conditions

  Carlos Luna Palomera, José Alejandro Ramírez Godínez, Felipe Alonso Rodríguez Almeida, Jaime Gutiérrez Alderete
• Animal physiology and reproduction abstracts

  Managing Editor
• Is the conservation of goat semen at -150°C a viable alternative?

  A. Medrano, F. Cabrera, F. Gonzalez, M. Batista, E. Quesada, P. Calero, A. Gracia
• GM 21. Early chromosomal diagnosis and reproductive management as tool to enhance production in bovines

  Oscar Vera, Pedro Bastidas, Gladys Muñoz
• GM 04. Scrotal measurements, weight, and semen quality in Nellore bulls

  Jose Aurelio Bergmann, Celia Raquel Quirino, V. R. Vale Filho,, V. J. Andrade, C. G. Fonseca
• Introduction to breeding in crossbred dual purpose heifers

  Carlos Gonzalez-Stagnaro, Javier Goicochea Llaque, María Alejandra Rodríguez-Urbina, Ninoska Madrid Bury, Decio González Villalobos
• FR 49. Nelore bulls evaluation submits to open testicular biopsy by the breeding soundness examination (ICAP) evolution

  Gustavo E. Freneau, J. D. Guimaraes, V. R. Vale Filho
• FR 48. Comparison of Fulton and alometric condition factors in curimbata (Prochilodus lineatus) raised in two environments

  Marco Antonio da Rocha, Edson Luis de Azambuja Ribeiro, Ivone Yurika Mizubuti
• FR 47. Chinchilla (Chinchilla lanigera) body growth in a commercial production, province of Buenos Aires. Argentina

  M. Alvarez, Hector Quintana, G. Mallo, M. E. Quinn
• FR 46. Seminiferous tubule wide diminished in testicles of turkeys (Meleagris gallopavo) fed furazolidone in their diets. Preliminar findings

  Maria Fernanda Peralta, Adriana Vivas, R. D. Miazzo, S. Ferrero
• FR 45. Early pregnancy factor: its characterization and purification from pregnant and PAF intrauterine administrated - pseudopregnant swine serum

  A. Vivas, Cristina Nowicki, R. Rovere, M. Sereno
• FR 44. Evaluation of two freezing boar semen techniques. Preliminary results of a fertility trial

  V. C. Wevar, M. E. Torreta, O. Forchetti
• FR 43. Postweaning growth in West African sheep

  Cesar Zambrano
• FR 42. Preweaning growth in West African sheep

  Cesar Zambrano
• FR 41. Intensive production of « Martinik » hair sheep at grazing in Martinique (F.W.I.)

  G. Aumont, M. Mahieu, Gisèle Alexandre
• FR 40. Preliminary results on factors affecting lambing intervals of ewes in tropical conditions

  Leyla Rios, Zoraida Rondon, Omar Verde, Josefina de Combellas
• FR 39. Serving capacity in young rams: repeatability of an evaluation test

  J. Olivera, A. Ferraris, Elize Thera van Lier, Juan Burgueño, A. Lopez
• FR 38. Influence of west-african lambs weight at birth on the mortality and growth rate

  Armando Quintero, Julio Boscan, A. Gonzalez, Roberto Palomares, J. Boissiere, J. Boissiere
• FR 37. Effects of type of lambing on the body weight to differents ages in west-african lambs breds under very dry tropic conditions

  Armando Quintero, Julio Boscan, Roberto Palomares, A. Gonzalez, J. Boissiere
• FR 36. Effects of sex on the body weight to differents ages in west-african lambs breds in venezuelan tropic

  Armando Quintero, Julio Boscan, Roberto Palomares, A. Gonzalez, J. Boissiere
• FR 35. Environmental factors effect on seasonality of calving in bufaloes

  Nestor Montiel, Nidia Rojas, Francisco Angulo, Adirmo Rafael Hernandez Fernandez, J. Zuleta, N. Cahuao, I. Torres
• FR 34. Environmental and fisiological factors effects on empty period – calving interval and lenght of gestation in bufaloes

  Nestor Montiel, Nidia Rojas, Francisco Angulo, Adirmo Rafael Hernandez Fernandez, J. Zuleta, N. Cahuao, I. Torres
• FR 33 Preliminary analysis of lactation curves in water buffaloes (Bubalus bubalis) in southern region of Táchira State

  Omar Alfredo Colmenares, H. Cermeño
• FR 32. In vitro heterologous fertilization of buffalo oocytes

  Pedro Bastidas, Adriana Fernandez, Juan Troconiz
• FR 31. ELISA vs RIA techniques comparation in the plasmatic progesterone determination in Bovines

  Noris Roa, Tiburcio Linares, Morella de Rolo, Rita Tamasaukas
• FR 30. Reproductive response of crossbred heifers (Bos indicus x Bos taurus) used as bovine embryo recipient in venezuelan tropic. II. Heifers recipient selection

  Noris Roa, Tiburcio Linares, Diego Barrios, Rita Tamasaukas, Morella de Rolo
• FR 29. Reproductive response of crossbred heifers (Bos indicus x Bos taurus) used as bovine embryo recipient in Venezuelan tropic. I. Racial type

  Noris Roa, Tiburcio Linares, Diego Barrios, Rita Tamasaukas, Morella de Rolo
• FR 28. Productive and reproductive survey in a ranch in flooded savannas ecosystem

  D. Ocanto, Rafael Aparicio, Cesar Labrador, Omar Colmenares
• FR 27. Milk production: responses to high temperature

  S. E. Valtorta, Perla Leva, M. R. Gallardo, L. V. Fornasero, M. A. Veles, M. S. Garcia
• FR 26. Feed suplementation with diets based on local resources in postcalving dual purpose cows Guárico state highlands, Venezuela. II. Effect on the reproduction performance

  Carlos Dominguez, Adrian Gonzalez, Jose A. Ureña, Karel Zahalka
• FR 25. Zebu females fertility artificial insemination after hormonal implant application

  S. A. Esperón, B. B. Lopez, Enrique Silva Peña, Miguel A. Galina, M. A. Carmona, L. G. Gonzalez
• FR 24. Effect of bull exposure on corpus luteum function and ovarian activity in prepuberal Brahman heifers

  Pedro Bastidas, Julio Ruiz, Magaly Manzo, Oswaldo Silva, Nora Guerrero, Juan Troconiz
• FR 23. Effect of uterine and ovarian massage on postpartum first oestrus and open days in creole limonero cows

  Adirmo Rafael Hernandez Fernandez, Nidia J. Rojas
• FR 22. Comparison of three methods for the synchronization of oestrus cycles using prostaglandin F2a in dry multiparous cows and heifers

  Juan B. Rodriguez Blanquet, Juan Burgueño, Carlos Jaime Mas, Fernando Pereyra
• FR 21. Estrus sinchronization and fertility in crossbred cows and heifers treated with one dose of PGF2a or its analogous.

  Robert Cruz, Eleazar Soto Belloso, Jose A. Aranguren-Mendez, M. Garcia, C. de la Hoz
• FR 20. Fourty five day breeding season. IV: Fisical and economical productivity

  Darío Montoni, Jose Rigoberto Vivas, Genaro Rojas, Jairo Parra, Milena Mago
• FR 19. Fourty five day breeding season. III: Calf growth

  Darío Montoni, Jose Rigoberto Vivas, Genaro Rojas, Jairo Parra, Milena Mago
• FR 18. Fourty five day breeding season. II: Reproductive performance of first-calf cows

  Darío Montoni, Jose Rigoberto Vitto, Genaro Rojas, Jairo Parra, Milena Mago
• FR 17. Production and transfer of frozen bovine embryos from criollo limonero catlle

  Romualdo Gonzalez, J. C. Velarde, Sunny Zambrano, P. Esté
• FR 16. Ultrasonographic evaluation of the cervical involution in tropical crossbred dairy cows

  Fernando Pedro Perea Ganchou, Roberto Cruz, R. Gonzalez, Eleazar Soto Belloso, Carlos Gonzalez-Stagnaro, Edmundo Rincon
• FR 15. Biological feasibility of establishing calving seasons in dual purpose herds

  Eva Romero, Omar Verde, Lucía Vaccaro, Rodolfo Vaccaro
• Duration of postpartum anestrus in ewes of the Mexican high plateau

  J. del C. Rodriguez-Castillo, Miguel Garcia-Winder, Arturo Pro-Martínez, J. Gallegos-Sanchez
• Productive and reproductive performance of dual-purpose cows in two systems of suckling in the tropics

  P. Perez, F. Solaris, Miguel Garcia-Winder, M. Osorio-Arce, J. Gallegos-Sanchez
• FR 12. Semen quality of Aberdeen Angus and Ibagé bulls submitted to experimental testicular degeneration

  M. M. Horn, J. C. Moraes, Carlos S. Galina
• FR 14. Effects of 14 days calf removal and/or bull exposure upon productive and reproductive perfomance in Hereford cows. Preliminar analysis (Two years)

  J. B. Rodriguez-Blanquet, N. Ruske, N. Iturralde, Juan Burgueño, F. Perer, C. Mas, G. Quintanas
• FR 13. Effect of ninety six-hour calf removal on estrus induction and fertility in crossbred aciclic cows

  Eleazar Soto-Belloso, German Portillo, Lilido Ramirez, Gustavo Soto, Nidia Rojas, Roberto Cruz-Arambulo
• FR 11. Evaluation of bovine semen frozen in french straws after 10 expositions to environment

  M. M. Horn, A. S. Costa, J. C. Moraes
• FR 10. Reproductive characteristics of breeding Brown Swiss x Zebu bulls in Venezuela

  Ninoska Madrid-Bury, S. Zambrano, A. Zambrano, E. Bohada, Carlos Gonzalez-Stagnaro, Zuleima Chirinos
• FR 09. Postpuberal comparative evaluation of 5/8 Bos taurus crossbreed young bulls. 2. Reproductive performance

  Jose A. Aranguren-Mendez, Ninoska Madrid-Bury, Carlos Gonzalez-Stagnaro, William Isea-Villasmil
• FR 08. Postpuberal comparative evaluation of 5/8 Bos taurus crosbreed young bulls. 1. Productive performance

  Jose A. Aranguren-Mendez, Ninoska Madrid-Bury, Carlos Gonzalez-Stagnaro, William Isea-Villasmil
• Induction of ovulation of the first dominant follicle in postpartum beef cows

  Giane Regina Paludo, Jose Ferrugen Moraes, Carlos Jose de Souza, Carlos Miguel Jaume, Cláudio Alvarenga de Oliveira

  93-102
• Perspective of research on ovine reproduction in Latin America within the framework of the present productive tendencies

  E. Rubianes, R. Ungerfeld
• Study of follicular dynamic by real-time ultrasound in prepubertal Gir heifers

  Adriana Rodrigues Silva, Arcadio de los Reyes Borjas, Maria Lucia Gambarini, Rodolfo Rumpf, Cláudio Cândido Oliveira, Benedito Dias de Oliveira Filho
• Anatomy-histopathologic and ultrastructure of turkey’s testis (Meleagris gallopavo) treated with furazolidone in its diets

  Maria Fernanda Peralta, R. D. Miazzo, M. A. Konkurat, A. B. Vivas
• FR 07. Reproductive performance of three swine breeding systems in Uruguay

  Hugo Petrocelli, Juan Burgueño
• FR 05. Field reproductive potential evaluation of Brahman bulls

  Pedro Bastidas, O. Silva, N. Guerrero, J. Troconiz
• FR 04. Urea concentration in milk and reproduction in dairy cows under grazing conditions

  A. Charmandarian, M. L. Gomez, R. Figallo, P. R. Marini, A. R. Castillo
• FR 03. Effect of birth season and bST on growth rate in Holstein heifers

  A. Garcia, D. Feitsma, M. J. Hayen, L. L Cline, H. H. Head, C. J. Wilcox
• FR 02. Forty five days breeding season. I: Reproductive performance of heifers

  Dario Montoni, J. R. Vitto, G. Rojas, J. Parra, Milena M. de Montoni
• FR 01. In vitro fertilization of oocytes colected postmortem from zebu cows

  Adriana Fernandez, Pedro Bastidas, Juan Troconiz
• Ultrasonographic evaluation of ovulatory follicle growth of anestrous crossbred Zebu cows post-treatment with norgestomet and eCG

  A. De Ondiz Sánchez, Fernando Perea Ganchou, R. Cruz Arambulo, German Portillo, Eleazar Soto Belloso
• Persistency in lactation – a review

  Jaime Araujo Cobucci, R. F. Euclydes, C. S. Pereira, R. de Almeida Torres, C. N. Costa, P. S. Lopes