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	Better odds of lamb survival in sheep at dry arid tropical region of India
	Gowane, G. R.; Swarnkar, C. P.; Narula, H. K.; Chopra, A.
通讯作者	Gowane, GR (corresponding author), ICAR Cent Sheep & Wool Res Inst, Avikanagar 304501, Rajasthan, India.
来源期刊	INDIAN JOURNAL OF ANIMAL SCIENCES
ISSN	0367-8318
出版年	2020
卷号	90 期号:4 页码:628-635
英文摘要	Lamb survival till first 28 days of life is critical as it increases the chances of economic gain in flock. Objective of the current study was to assess the incidence of neonatal mortality in lambs born in arid region of India and genetic and non-genetic factors affecting it. The present study was conducted using the data on 4,137 Magra and 4,595 Marwari sheep over 17 years (1999 to 2016). Incidence of neonatal mortality was very low in Magra (1.04%) and Marwari (2.48%) sheep, respectively in semi-intensive management system. Year and seasonal variation was observed for neonatal losses. Males had lower odds of survival as compared to females. Odds of survival were low if the lambs were born to dams of low body weight and in their first parity. It was observed that the lamb survival can be improved if due care of the lambs born with low birth weight (<2 kg) is taken. The heritability estimate was moderate in Magra sheep (0.17), indicating further scope for genetic improvement for lamb survival through selection. However, for Marwari sheep, the total heritability was 0.02, thus limiting the scope for selection. Arid region favoured the lamb survival. Hardiness of the Magra and Marwari sheep, their high lamb survival along with standard production potential is indicative of the good genetics of these sheep along with better management practices adopted at arid regional campus, thus reflecting better sheep welfare practices.
英文关键词	Arid Gibbs sampling Heritability Neonatal mortality Sheep welfare
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000596013000028
WOS关键词	GENETIC-PARAMETERS ; BIRTH-WEIGHT ; RISK-FACTORS ; GROWTH TRAITS ; MORTALITY ; MERINO ; REPRODUCTION ; PERFORMANCE ; IMPROVEMENT ; COMPONENTS
WOS类目	Agriculture, Dairy & Animal Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348914
作者单位	[Gowane, G. R.; Swarnkar, C. P.; Narula, H. K.; Chopra, A.] ICAR Cent Sheep & Wool Res Inst, Avikanagar 304501, Rajasthan, India
推荐引用方式 GB/T 7714	Gowane, G. R.,Swarnkar, C. P.,Narula, H. K.,et al. Better odds of lamb survival in sheep at dry arid tropical region of India[J],2020,90(4):628-635.
APA	Gowane, G. R.,Swarnkar, C. P.,Narula, H. K.,&Chopra, A..(2020).Better odds of lamb survival in sheep at dry arid tropical region of India.INDIAN JOURNAL OF ANIMAL SCIENCES,90(4),628-635.
MLA	Gowane, G. R.,et al."Better odds of lamb survival in sheep at dry arid tropical region of India".INDIAN JOURNAL OF ANIMAL SCIENCES 90.4(2020):628-635.