FR 08. Postpuberal comparative evaluation of 5/8 Bos taurus crosbreed young bulls. 1. Productive performance

  • Jose A. Aranguren-Mendez La Universidad del Zulia, Venezuela
  • Ninoska Madrid-Bury La Universidad del Zulia, Venezuela
  • Carlos Gonzalez-Stagnaro La Universidad del Zulia, Venezuela
  • William Isea-Villasmil La Universidad del Zulia, Venezuela

Abstract

The productive performance of 8 5/8 Holstein (5/8H) and 8 5/8 Brown Swiss (5/8PS) young bulls was characterized. The bulls came from a commercial herd, located in a dry tropical forest zone with 28 ºC mean temperature and bimodal annual rainfall of 1200 mm. Body weigth (BW), thoracic girth (HG) and heigth (H) were studied. The effects of genotype (G), seasons (dry, subhumid and humid) and its interaction, as well as, the initial weigth (BIW) as a covariable were considered. Data were analysed through ANOVA (SAS). The 5/8H were superior (P<.05) to 5/8PS; BW, HG and H were 271 ± 11 vs 241 ± 11 k; 149 ± 1.3 vs 143 ± 2.0 cm; 122 ± 0.9 vs 121 ± 1.7 cm at 18 m respectively, and 374 ± 11 vs 339 ± 11 k; 169 ± 1.7 vs 162 ± 1.2 cm; 131 ± 1.3 vs 127 ± 1.4 cm at 24 m respectively. Seasons affected (P<.05) BW, HG and H, being favorable to those animals in the subhumid and humid season. The performance of the 5/8H crossbred young bulls indicated more adaptability to the tropics.

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Published
2005-10-03
How to Cite
Aranguren-Mendez, Jose A., Ninoska Madrid-Bury, Carlos Gonzalez-Stagnaro, and William Isea-Villasmil. 2005. “FR 08. Postpuberal Comparative Evaluation of 5/8 Bos Taurus Crosbreed Young Bulls. 1. Productive Performance”. Latin American Archives of Animal Production 5 (3). https://ojs.alpa.uy/index.php/ojs_files/article/view/231.