Growth of calves in a dual-purpose system in humid-tropics of Mexico

被引：0

作者：

de las Heras-Torres, Jesus G. ^{[1
]}

Osorio-Arce, Mario M. ^{[1
]}

Segura-Correa, Jose C. ^{[2
]}

机构：

[1] Colegio Postgrad, H Cardenas, Tabasco, Mexico

[2] Univ Autonoma Yucatan, Fac Med Vet & Zootecn, Merida, Yucatan, Mexico

来源：

REVISTA CIENTIFICA-FACULTAD DE CIENCIAS VETERINARIAS | 2008年 / 18卷 / 02期

关键词：

calves; growth; dual-purpose; Mexico; tropic;

D O I：

暂无

中图分类号：

S85 [动物医学（兽医学）];

学科分类号：

0906 ;

摘要：

The objective of this study was to describe the growth until weaning of crossbred calves in a dual-purpose system in the Mexican tropics. The calves were 3/4 European (Holstein, Simmental, Brown Swiss) 1/4 Zebu, equal than their mothers. The calves help to the let down of milk during milking and drunk the residual milk for 30 minutes (restricted suckling) and were maintained in a Star grass (Cynodon plestostachyus) paddocks having access to an energetic-proteical supplement (1 kg/calf/day). Animals were weighed at birth, and thereafter every 28 days. Data on 361 (190 males and 171 females) calves (4.678 weights) were analyzed through out linear and quadratic regressions. The determination coefficients were similar for male and female calves. The model that included the linear and quadratic effects described better the data, than the linear model.

引用

页码：170 / 174

页数：5

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