干旱区生态环境知识资源中心(Arid): On-station comparative analysis of reproductive and survival performance between Red Maasai, Dorper, and Merino sheep breeds

Arid

DOI	10.1016/j.animal.2023.100715
	On-station comparative analysis of reproductive and survival performance between Red Maasai, Dorper, and Merino sheep breeds
	Wanjala, G.; Kichamu, N.; Strausz, P.; Astuti, P. K.; Kusza, Sz.
通讯作者	Kusza, S
来源期刊	ANIMAL
ISSN	1751-7311
EISSN	1751-732X
出版年	2023
卷号	17 期号:3
英文摘要	The reproductive performance of ewes and the survivability of lambs to weaning have a critical economic impact on sheep farming worldwide. Further, knowledge of major mortality causes allows an opportunity for improved flock management to evade financial losses. The maximum likelihood estimates for gener-alised linear mixed models and chi-square test methods were used to examine 971 mating records, 839 and 763 lambs born and weaned (singles or twins) from the Naivasha Sheep and Goats station in Kenya for the years 2011 to 2020 consisting of Dorper, Red Maasai (RedM), and Merino breeds. The RedM (P < 0.05) outperformed Dorper and Merino in weaning rate, whereas reproductive performance between the three breeds was not significantly different (P > 0.05) in litter size and multiple lambings per ewe lambing. On the one hand, Dorper significantly (P < 0.05) outperformed the other two breeds only in weaning weight per lamb born. In addition, among all the major causes of death, pneumonia appeared to be the one to which Dorper breeds were most susceptible (chi-square test, P < 0.05). According to the findings of this study, neither the Dorper nor the Merino sheep breeds were reproductively superior to the RedM in an extensive semi-arid production environment. In addition, Dorper's susceptibility to the leading causes of mortality, particularly pneumonia and sheep pox, were relatively high compared to other breeds and could be a precursor to massive economic losses for Dorper sheep producers. In contrast to the indigenous RedM breed, imported sheep breeds appeared to be more susceptible to major mortality-related under an extensive production system. Therefore, regardless of weaning weight, RedM breed production appears to be a more viable investment for small-scale farmers, particularly in semi-arid regions. (c) 2023 Published by Elsevier B.V. on behalf of The Animal Consortium. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licensesfby-nc-nd/4.0/).
英文关键词	Fertility rate Lambing rate Litter size Survival rate Weaning rate
类型	Article
语种	英语
开放获取类型	Green Accepted, gold
收录类别	SCI-E
WOS记录号	WOS:000935726900001
WOS关键词	GENETIC-PARAMETERS ; TRAITS ; TSIGAI ; RESISTANCE ; EFFICIENCY ; PNEUMONIA ; SYSTEMS
WOS类目	Agriculture, Dairy & Animal Science ; Veterinary Sciences
WOS研究方向	Agriculture ; Veterinary Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395296
推荐引用方式 GB/T 7714	Wanjala, G.,Kichamu, N.,Strausz, P.,et al. On-station comparative analysis of reproductive and survival performance between Red Maasai, Dorper, and Merino sheep breeds[J],2023,17(3).
APA	Wanjala, G.,Kichamu, N.,Strausz, P.,Astuti, P. K.,&Kusza, Sz..(2023).On-station comparative analysis of reproductive and survival performance between Red Maasai, Dorper, and Merino sheep breeds.ANIMAL,17(3).
MLA	Wanjala, G.,et al."On-station comparative analysis of reproductive and survival performance between Red Maasai, Dorper, and Merino sheep breeds".ANIMAL 17.3(2023).