墨西哥潮湿热带地区产犊间隔的品种差异。

Breed differences in calving interval in the humid Mexican tropic.

作者信息

Murillo Medina Aída Lorena, Córdova-Izquierdo Alejandro, Soriano Robles Ramón, Mendoza Martínez Germán David, Castillo-Juárez Héctor

机构信息

Departamento de Producción Agrícola y Animal, Universidad Autónoma Metropolitana, Unidad Xochimilco, Distrito Federal, México.

出版信息

Trop Anim Health Prod. 2009 Oct;41(7):1357-62. doi: 10.1007/s11250-009-9322-y. Epub 2009 Feb 20.

DOI:10.1007/s11250-009-9322-y

PMID:19229648

Abstract

The objective of this study was to evaluate the influence of breed, breed and sex of the calf, farm, calving number (CN), type of calving, and their interactions on CI using records from four different beef breeds performing in the humid tropical environment of Mexico. The influence of these factors on CN was also evaluated. CI and CN varied with farm, breed of the dam, and with breed of the dam by calf breed interaction (P<0.001), while CI also varied with CN. Significant differences between Bos indicus and Bos taurus breeds for CI (432 vs. 488 days) and for CN (2.13 vs. 1.92) were observed (P<0.001). The interaction effects observed between breed of the dam by breed of the calf on CI and on CN were due to a favorable F(1) calf effect on CI observed only in Angus cows, although with an apparent unexpected negative impact on CN.

摘要

本研究的目的是利用在墨西哥潮湿热带环境中养殖的四个不同肉牛品种的记录，评估品种、犊牛的品种和性别、养殖场、产犊数（CN）、产犊类型及其相互作用对犊牛间隔（CI）的影响。同时也评估了这些因素对产犊数的影响。犊牛间隔和产犊数因养殖场、母牛品种以及母牛品种与犊牛品种的相互作用而有所不同（P<0.001），而犊牛间隔也随产犊数而变化。观察到印度瘤牛和普通牛品种在犊牛间隔（432天对488天）和产犊数（2.13对1.92）方面存在显著差异（P<0.001）。观察到的母牛品种与犊牛品种之间对犊牛间隔和产犊数的相互作用效应，是由于仅在安格斯母牛中观察到F(1)犊牛对犊牛间隔有有利影响，尽管对产犊数有明显意外的负面影响。