干旱区生态环境知识资源中心(Arid): Effect of environmental factors on estrus synchronization and artificial insemination success in farmers flock in sheep under semi-arid tropical region

Arid

DOI	10.1111/rda.13683
	Effect of environmental factors on estrus synchronization and artificial insemination success in farmers flock in sheep under semi-arid tropical region
	De, Kalyan 1,2; Kumar, Davendra 2; Balaganur, Krishnappa 2; Naqvi, Syed Mohammad Khursheed 2
通讯作者	De, Kalyan
来源期刊	REPRODUCTION IN DOMESTIC ANIMALS
ISSN	0936-6768
EISSN	1439-0531
出版年	2020
卷号	55 期号:7 页码:777-784
英文摘要	Environmental cues in the different seasons might influence the estrus and lambing percentages. The present study was conducted to assess the effect of environmental factors on estrus synchronization (ES) and artificial insemination success in sheep. During the period from 2012 to 2017, a total of 1,197 ewes of Kheri and Malpura breeds of 34 farms originating from 10 villages were synchronized for estrus and then fixed-time artificial insemination (FTAI) was done. Oestrous synchronization was done by intravaginal progesterone sponges and eCG protocol. Fixed-time cervical insemination was performed 48 and 56 hr after sponge removal in ewes exhibiting estrus, using liquid chilled semen containing 100 million sperm per dose of Patanwadi/Malpura rams. Mean sunshine hours, maximum and minimum ambient temperatures, temperature amplitude, mean relative humidity (RH), temperature-humidity index (THI), mean temperature during sponge-in to sponge-out-12-day period, sponge-out and next day, AI day and AI to next 15 days have been calculated. The estrus response and lambing percentage were higher (p < .05) when ES and FTAI were done during hot-humid with rainfall season. Successful (p < .05) ES occur when the minimum temperature was higher in cold-humid season, and the sunshine hour was higher in hot-humid with scanty rainfall season during sponge-in to sponge-out period. The success of the lambing percentage was higher (p < .05) when maximum temperature, minimum temperature, mean temperature and THI was higher on the day of AI and the next 15-day period, irrespective of the season. The success of FTAI indicates the adaptability of the local breed to tolerate the harsh climate of the hot semi-arid region without much hindrance in lambing percentages.
英文关键词	artificial insemination environment estrus synchronization semi-arid sheep temperature
类型	Article
语种	英语
国家	India
收录类别	SCI-E
WOS记录号	WOS:000531619700001
WOS关键词	CERVICAL-MUCUS ; MALPURA SHEEP ; FERTILITY ; EWES ; PHOTOPERIOD ; BEHAVIOR ; TRAITS
WOS类目	Agriculture, Dairy & Animal Science ; Reproductive Biology ; Veterinary Sciences
WOS研究方向	Agriculture ; Reproductive Biology ; Veterinary Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318637
作者单位	1.ICAR Natl Res Ctr Pig, Gauhati 781131, Assam, India; 2.ICAR Cent Sheep & Wool Res Inst, Avikanagr, Rajasthan, India
推荐引用方式 GB/T 7714	De, Kalyan,Kumar, Davendra,Balaganur, Krishnappa,et al. Effect of environmental factors on estrus synchronization and artificial insemination success in farmers flock in sheep under semi-arid tropical region[J],2020,55(7):777-784.
APA	De, Kalyan,Kumar, Davendra,Balaganur, Krishnappa,&Naqvi, Syed Mohammad Khursheed.(2020).Effect of environmental factors on estrus synchronization and artificial insemination success in farmers flock in sheep under semi-arid tropical region.REPRODUCTION IN DOMESTIC ANIMALS,55(7),777-784.
MLA	De, Kalyan,et al."Effect of environmental factors on estrus synchronization and artificial insemination success in farmers flock in sheep under semi-arid tropical region".REPRODUCTION IN DOMESTIC ANIMALS 55.7(2020):777-784.