FACTORS AFFECTING, BIRTH WEIGHT, AGE AND WEIGHT AT FIRST CALVING IN SAHIWAL CATTLE

被引：0
|
作者：
Wakchaure, R. S. [1 ]
Meena, Rajkumar [1 ]
机构：
[1] Natl Dairy Res Inst, Karnal 132001, India
来源：
INDIAN JOURNAL OF ANIMAL RESEARCH | 2010年 / 44卷 / 03期
关键词：
Weight first calving; Age first calving; Birth weight;
D O I：
暂无
中图分类号：
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号：
0905 ;
摘要：
A total of 354 records of Sahiwal individuals spread over a period of 24 years (1980-2003) were analyzed to estimate the effect of certain genetic and non-genetic factors on birth weight, age at first calving, and weight at first calving. The least squares means (LSMS) for birth weight (BW), age at first calving (AFC) and weight at first calving (WFC), were 20.41 +/- 0.23 Kg, 1078.09 +/- 21.12 days and 367.69 +/- 4.48 Kg, respectively. The heritability estimates for birth weight (BW), age at first calving (AFC) and weight at first calving (WFC), were 0.20 +/- 0.14, 0.041 +/- 0.110 and 0.285 +/- 0.156, respectively. The phenotypic correlation between birth weight and age at first calving was positive and highly significant. The correlation between age at first calving and weight at first calving was non-significant.
引用
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页码：173 / 177
页数：5
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