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Vol. 5 No. 1 (1997)

Published: 1997-06-30

Cover page

Cover
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Editor's Foreword

Editorial

Managing Editor
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Original paper

Evaluation of the sustainability of a management alternative in the production system of small producers of Carchi, Ecuador. II. Experimentation with a simulation model.

Claudio Aguilar, Victor Hugo Barrera Mosquera

1-20
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The growth of replacement heifers in dairy farms in Costa Rica. 1. Growth typing of Holstein and Jersey heifers.

Cesar Solano Patino, Bernardo Vargas-Leitón

21-36
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The growth of replacement heifers in dairy farms in Costa Rica. 2. The effect of growth rate and age at first calving on subsequent milk production

Cesar Solano Patino, Bernardo Vargas-Leitón

37-50
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Effect of feed supplementation on the productive and reproductive performance of Brahman heifers grazing in the humid tropics of Mexico

Rodolfo Soto-Camargo, Carlos S. Galina, Epigmenio Castillo, Hector Basurto

51-64
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Effect of feed supplementation, body condition and oestrus timing on the mounting activity of Brahman heifers at grazing in the humid tropics of Mexico

Rodolfo Soto-Camargo, Carlos S. Galina, Ivette Rubio, Epigmenio Castillo, Hector Basurto

65-78
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Comparison between hair (St. Croix) and wool (Targhee and Dorset) lambs regarding the effect of heat stress on food and water intake, digestive function, and nitrogen balance

G. M. J. Horton, Abner A. Rodríguez

79-92
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Erratum

Erratum

93-95
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