干旱区生态环境知识资源中心(Arid): Genetic Analysis of Reproductive and Fitness Traits of Malpura Sheep in Semi-arid Tropics of India

Arid

DOI	10.1007/s40003-014-0091-0
	Genetic Analysis of Reproductive and Fitness Traits of Malpura Sheep in Semi-arid Tropics of India
	Gowane, G. R.; Prince, L. L. L.; Paswan, C.; Misra, S. S.; Sharma, R. C.; Naqvi, S. M. K.
通讯作者	Gowane, GR
来源期刊	AGRICULTURAL RESEARCH
ISSN	2249-720X
EISSN	2249-7218
出版年	2014
卷号	3 期号:1 页码:75-82
英文摘要	Malpura sheep is one of the well adapted and heavy breeds of sheep in semi-arid region of India, which is primarily reared for mutton production. Present study was carried out to evaluate the reproductive parameters and selective value and also to estimate (co) variance component for these traits in the Malpura sheep on the data spread over 35 years (1975-2009). Study revealed the age at first service (AFS; 632.52 +/- 4.47 days), weight at first service (WFS; 26.05 +/- 0.08 kg), age at first successful service (ASS; 689.48 +/- 5.28 days), weight at first successful service (WSS; 26.74 +/- 0.09 kg), age at first lambing (AFL; 838.55 +/- 5.34 days), ewe weight at lambing (WL; 27.94 +/- 0.10 kg) and lambing interval (LI; 439.18 +/- 4.84 days). Survivability of female lambs born in herd was found to be 91.8 % till weaning and 71.8 % till they reached maturity at 12 month. The study also determined fitness traits (lifetime) such as total lambs born per ewe (TLB; 3.85 +/- 0.05), total female lambs born per ewe (TFLB; 1.95 +/- 0.04,), lambs weaned by a ewe (LW; 3.37 +/- 0.05), total female lambs weaned by a ewe (TFLW 1.79 +/- 0.04) and selective value or females reached reproductive age per ewe (SV 1.40 +/- 0.04). Estimates of additive genetic variance (h 2) for reproductive traits were 0.09 +/- 0.05 for AFS, 0.39 +/- 0.06 for WFS, 0.18 +/- 0.06 for ASS, 0.34 +/- 0.06 for WSS, 0.11 +/- 0.05 for AFL, 0.25 +/- 0.06 for WL and 0.00 +/- 0.04 for LI. Similarly, h(2) estimates were 0.13 +/- 0.05 for TLB, 0.00 +/- 0.03 for TFLB, 0.14 +/- 0.05 for TLW, 0.02 +/- 0.04 for TFLW and 0.02 +/- 0.04 for SV. Study revealed that for reproductive traits, there was moderate direct additive variance, and thus, scope of further improvement in the traits, however, for SV maximum variance was attributed to the environmental sources of variation. Maternal effect was found to have very little or no effect on the reproductive traits as well as SV in Malpura sheep.
英文关键词	Malpura sheep Reproductive traits Fitness traits Selective value Heritability
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000218689100007
WOS类目	Agronomy
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/2XILL650/330787
作者单位	[Gowane, G. R.; Prince, L. L. L.; Paswan, C.; Misra, S. S.; Sharma, R. C.; Naqvi, S. M. K.] Cent Sheep & Wool Res Inst, Div Anim Genet & Breeding, Avikanagar Via Jaipur 304501, Jaipur 304501, Rajasthan, India
推荐引用方式 GB/T 7714	Gowane, G. R.,Prince, L. L. L.,Paswan, C.,et al. Genetic Analysis of Reproductive and Fitness Traits of Malpura Sheep in Semi-arid Tropics of India[J],2014,3(1):75-82.
APA	Gowane, G. R.,Prince, L. L. L.,Paswan, C.,Misra, S. S.,Sharma, R. C.,&Naqvi, S. M. K..(2014).Genetic Analysis of Reproductive and Fitness Traits of Malpura Sheep in Semi-arid Tropics of India.AGRICULTURAL RESEARCH,3(1),75-82.
MLA	Gowane, G. R.,et al."Genetic Analysis of Reproductive and Fitness Traits of Malpura Sheep in Semi-arid Tropics of India".AGRICULTURAL RESEARCH 3.1(2014):75-82.