Factors affecting weight and age at first calving, first lactation milk yield in Gir cows

被引：2
作者：
Singh, Basdev [1 ,2 ]
Sawant, Pushkraj [1 ]
Sawant, Dhruvaraj [1 ,3 ]
Todkar, Sachin [1 ,4 ]
Jain, Richa [1 ,5 ]
机构：
[1] Kasturba Gram Dairy Farm, Indore 452020, Madhya Pradesh, India
[2] Banaras Hindu Univ, Dept Anim Husb & Dairying, Varanasi, Uttar Pradesh, India
[3] Dr DY Patil Coll Agr, Dept Anim Sci & Dairy Sci, Talsande, Maharashtra, India
[4] Sharad Coll Agr, Dept Anim Sci & Dairy Sci, Jainapur, Maharashtra, India
[5] Raja Balwant Singh Coll, Dept Anim Husb & Dairying, Agra, Uttar Pradesh, India
来源：
Indian Journal of Animal Research | 2016年 / 50卷 / 05期
关键词：
Age at first calving; First lactation milk yeild; Gir cow; Hertability; Weight at first calving; PRODUCTION PERFORMANCE; CROSSBRED CATTLE; GENETIC GROUPS; VARIANCE; CROSSES; SAHIWAL; TRAITS;
D O I：
10.18805/ijar.8415
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 present study was undertaken on data of 113 Gir cows maintained at Kasturba Gram Dairy Farm, Indore, Madhya Pradesh, India over a period of 18 years from 1995 to 2012, based on age at first calving. The overall means for weight at first calving (WFC), age at first calving (AFC), and first lactation milk yield (FLMY) were 402.2 +/- 1.28 kg, 1709.04 +/- 51.92 days and 1664.95 +/- 280.72 litres respectively. The heritability estimates for WFC, AFC and FLMY were 0.248 +/- 0.234, 0.307 +/- 0.206 and 0.111 +/- 0.252 respectively. The genetic correlation between WFC and AFC was positive and significant, while it was negative in between WFC and FLMY. The genetic correlation between AFC and FLMY was low and negative. The phenotypic correlations between all traits were positive.
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页码：804 / 807
页数：4
相关论文
共 32 条
[1]  
ALBUQUERQUE L G, 1990, Arquivo Brasileiro de Medicina Veterinaria e Zootecnia, V42, P439
[2]  
[Anonymous], 1987, THESIS
[3]   A study of some economic traits of indigenous cattle and their crossbreeds in southern Bangladesh [J].
Ashraf, A ;
Islam, SS ;
Islam, ABMM ;
Ali, SZ .
ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES, 2000, 13 (09) :1189-1192
[4]  
Bhoite UY, 1996, INDIAN VET J, V73, P473
[5]  
Campos F. A. A., 1981, MEMORIA ASOCIACION L, V11, P58
[6]  
Dangar N.S, 2014, INT J LIVESTOCK RES, V4
[7]  
Das G. C., 1990, Livestock Adviser, V15, P3
[8]  
Dubey PP, 2005, INDIAN J ANIM SCI, V75, P1289
[9]  
Gaur G.K., 2003, AGRI, V33, P21, DOI [10.1017/s1014233900001607, DOI 10.1017/S1014233900001607]
[10]  
Gopal Dass Gopal Dass, 2000, Indian Journal of Animal Research, V34, P43
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