干旱区生态环境知识资源中心(Arid): Genetic analysis of live weight of local kids to promote genetic evaluations in the arid areas of Tunisia

Arid

DOI	10.1007/s11250-019-02081-z
	Genetic analysis of live weight of local kids to promote genetic evaluations in the arid areas of Tunisia
	Atoui, Ahlem 1; Jesus Carabano, Maria 2; Diaz, Clara 2; Najari, Sghaier 1
通讯作者	Jesus Carabano, Maria
来源期刊	TROPICAL ANIMAL HEALTH AND PRODUCTION
ISSN	0049-4747
EISSN	1573-7438
出版年	2020
卷号	52 期号:3 页码:955-968
英文摘要	Goat meat production, a widely extended activity in the more arid areas of Tunisia, relies on local breeds. These breeds are well adapted to produce under harsh conditions but have a very small size and low productivity. The aim of this study was to establish the basis for future genetic evaluations to improve growth potential of this local stock. A total of 13,095 body weights and pedigree of 945 kids in the caprine herd of the Arid Areas Institute of Medenine were used. Random regression (RR) and multiple trait (MT) models were analyzed and compared. All models included effects of age and weight of dam, age, sex and type of birth of the kid, and year x month of recording, plus random direct and maternal additive genetic and permanent environmental effects. RR and MT models behave similarly, with RR showing slightly better goodness of fit. Heritability estimates for direct (ranging from 0.15 to 0.4) and maternal (0.05 to 0.3) effects showed that efficient selection for weight is feasible in this population. Estimated correlations between ages were high (> 0.8) for direct effects across all ages and low (down to 0.2) for weights taken at distant ages for maternal effects. Estimated genetic correlations between direct and maternal components revealed an antagonistic relationship, especially at early ages. Recording of at least one weight in the first month of age of the kids to evaluate the maternal capacity and a later weight to evaluate direct effects on weight is recommended for genetic evaluations under field conditions.
英文关键词	Goats Growth traits Genetic evaluations Random regression models Multitrait models
类型	Article
语种	英语
国家	Tunisia ; Spain
收录类别	SCI-E
WOS记录号	WOS:000494765600003
WOS关键词	RANDOM REGRESSION-MODELS ; GROWTH TRAITS ; BODY-WEIGHTS ; PHENOTYPIC PARAMETERS ; COVARIANCE FUNCTIONS ; VARIANCE-COMPONENTS ; REPRODUCTION TRAITS ; PERFORMANCE ; CATTLE ; BIRTH
WOS类目	Agriculture, Dairy & Animal Science ; Veterinary Sciences
WOS研究方向	Agriculture ; Veterinary Sciences
EI主题词	2019-11-06
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310777
作者单位	1.Univ Gabes, Fac Sci FSG, Inst Arid Reg, Medenine 4119, Gabes, Tunisia; 2.INIA, Dept Mejora Genet Anim, Ctra Coruna Km 7-5, Madrid 28040, Spain
推荐引用方式 GB/T 7714	Atoui, Ahlem,Jesus Carabano, Maria,Diaz, Clara,et al. Genetic analysis of live weight of local kids to promote genetic evaluations in the arid areas of Tunisia[J],2020,52(3):955-968.
APA	Atoui, Ahlem,Jesus Carabano, Maria,Diaz, Clara,&Najari, Sghaier.(2020).Genetic analysis of live weight of local kids to promote genetic evaluations in the arid areas of Tunisia.TROPICAL ANIMAL HEALTH AND PRODUCTION,52(3),955-968.
MLA	Atoui, Ahlem,et al."Genetic analysis of live weight of local kids to promote genetic evaluations in the arid areas of Tunisia".TROPICAL ANIMAL HEALTH AND PRODUCTION 52.3(2020):955-968.