Influence of environmental factors on age at first calving in Jaffarabadi buffaloes

被引：0
|
作者：
Sharma, H. A. [1 ]
Gajbhiye, P. U. [2 ]
Ahlawat, A. R. [1 ]
Ramani, A. L. [1 ]
Dongre, V. B. [3 ]
机构：
[1] Junagadh Agr Univ, Dept Anim Genet & Breeding, Coll Vet Sci, Junagadh, Gujarat, India
[2] Junagadh Agr Univ, Cattle Breeding Farm, Junagadh, Gujarat, India
[3] Coll Vet Sci & AH, Cattle Breeding Farm, Udgir, Maharashtra, India
来源：
JOURNAL OF LIVESTOCK SCIENCE | 2016年 / 7卷
关键词：
age at first calving; Period of calving; calving season; buffalo; Jaffarabadi;
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：
The breeding records of 191 primipara Jaffarabadi buffaloes spread over 1991 to 2014 from Cattle Breeding farm, Junagadh were used to study the effects of periods and seasons of conception on age at first calving. The data were collected and analysed using maximum likelihood and least square techniques to examine the effect of non-genetic factors on age at first calving. The overall least squares mean for Age at fist calving was 1788.52 +/- 36.14 days. The effect of season of conception was significant (p<0.05) and effect of season of calving and period of calving were highly significant (p<0.01) on age at first calving. Therefore, the data for genetic analysis should be adjusted for better estimates of genetic parameters in Jaffarabadi buffaloes.
引用
收藏
页码：256 / 259
页数：4
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