气候变化领域集成服务门户(CCPortal): Impact of Body Reserves Dynamic on Productivity and Reproductive Performance in Fat-Tail and Thin-Tail Sheep Breeds over Contrasting Production Cycles

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DOI	10.3390/ani14060891
	Impact of Body Reserves Dynamic on Productivity and Reproductive Performance in Fat-Tail and Thin-Tail Sheep Breeds over Contrasting Production Cycles
	Yagoubi, Yathreb; Smeti, Samir; Mahouachi, Mokhtar; Nasraoui, Massara; Ben Said, Samia; Mohamed-Brahmi, Aziza; Atti, Naziha
发表日期	2024
ISSN	2076-2615
起始页码	14
结束页码	6
卷号	14 期号:6
英文摘要	Simple Summary: Climate change presents significant nutritional challenges to animal breeding, demanding resilience and efficiency for survival and productivity. In this study, we investigated the effects of body reserves dynamics (mobilization and accretion) on the production and reproduction parameters of fat-tailed Barbarine and thin-tailed Queue Fine de l'Ouest ewes over two production cycles under semi-intensive conditions. The results show that all reproductive traits were similar among breeds; however, they depend on ewes' body reserves. Similarly, lambs' growth parameters depend on ewes' body condition scores (BCSs) at lambing and weaning, with higher growth for ewes with BCS > 2 at lambing. In conclusion, regardless of the breed, ewes have evolved adaptive mechanisms by mobilizing body reserves to effectively cope with environmental challenges and successfully rear their offspring. Additionally, to sustain a high growth rate in offspring, it is advisable to carefully plan the flock nutritional needs during the suckling period. Under climate change, animal breeding faces severe nutritional challenges, exhibiting their resilience and efficiency to survive and produce. The animals' robustness can be evaluated through the use and reconstitution of body reserves (BR). This study investigated the dynamics of ewes' BR, measured through body weight (BW) and the body condition score (BCS), and their effect on production performances of 480 ewes belonging to fat-tailed Barbarine (BB) and thin-tailed Queue Fine de l'Ouest (QFO) ewes over two consecutive years. The BW and BCS were recorded across physiological stages. Reproductive parameters and lambs' growth were calculated. For both years and breeds, the decrease in the BCS between mating and lambing showed BR mobilization to balance nutritional restrictions, which continues until suckling; after weaning, a BR accretion was noted. The lambs' birth weight was similar regardless of the dams' BCS at lambing, though it was lower in the second year (3.5 vs. 4 kg). Lambs' growth parameters depended on ewes' BCS at lambing and weaning. Fertility rates changed with BCS changes and the higher values (80%) were recorded for ewes with BCSs between 2 and 2.5. However, prolificacy was similar for both breeds and years (p > 0.05). In conclusion, ewes have developed adaptative capacities through BR mobilization to cope with environmental challenges and successfully rear their offspring. To maintain a high offspring growth rate, it is recommended to plan correct flock nutrition during suckling.
英文关键词	ewes; body condition score; body reserves; fertility; lamb's growth
语种	英语
WOS研究方向	Agriculture ; Veterinary Sciences ; Zoology
WOS类目	Agriculture, Dairy & Animal Science ; Veterinary Sciences ; Zoology
WOS记录号	WOS:001191891100001
来源期刊	ANIMALS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/292319
作者单位	Universite de Carthage; Universite de Jendouba
推荐引用方式 GB/T 7714	Yagoubi, Yathreb,Smeti, Samir,Mahouachi, Mokhtar,et al. Impact of Body Reserves Dynamic on Productivity and Reproductive Performance in Fat-Tail and Thin-Tail Sheep Breeds over Contrasting Production Cycles[J],2024,14(6).
APA	Yagoubi, Yathreb.,Smeti, Samir.,Mahouachi, Mokhtar.,Nasraoui, Massara.,Ben Said, Samia.,...&Atti, Naziha.(2024).Impact of Body Reserves Dynamic on Productivity and Reproductive Performance in Fat-Tail and Thin-Tail Sheep Breeds over Contrasting Production Cycles.ANIMALS,14(6).
MLA	Yagoubi, Yathreb,et al."Impact of Body Reserves Dynamic on Productivity and Reproductive Performance in Fat-Tail and Thin-Tail Sheep Breeds over Contrasting Production Cycles".ANIMALS 14.6(2024).