干旱区生态环境知识资源中心(Arid): Comparative assessment of growth curves in Brazilian white Morada Nova hair sheep breed

Arid

DOI	10.1007/s11250-024-04065-0
	Comparative assessment of growth curves in Brazilian white Morada Nova hair sheep breed
	de Assuncao, Marcos Aurelio Victor; de Sousa, Jose Ernandes Rufino; Silveira, Robson Mateus Freitas; Mcmanus, Concepta; Sales, Daniel Caetano; do Nascimento, Bianca Ferreira; Felix, Natanael Silva; Facanha, Debora Andrea Evangelista
通讯作者	Silveira, RMF
来源期刊	TROPICAL ANIMAL HEALTH AND PRODUCTION
ISSN	0049-4747
EISSN	1573-7438
出版年	2024
卷号	56 期号:6
英文摘要	The Morada Nova sheep breed is essential for the economy of the semi-arid region of Northeast Brazil, standing out for its adaptability, resistance to parasites and reproductive ability. However, the white variant is endangered, highlighting the importance of studies on its productivity to support conservation efforts. This study focuses on the growth curve of the Morada Nova sheep breed, using nonlinear models and analyzing flock profiles. Total of 764 observations of 165 animals from four farms in Cear & aacute; and Rio Grande do Norte, Brazil, were analyzed. Canonical discriminant analysis (CDA) was used for the exploratory analysis and four nonlinear models were used to study the growth curve. Weight from birth to 270 days of age, absolute growth rate (AGR), and the impact of sex on growth curves were assessed. Sex and farm are significant discriminating variables (P < 0.05) for the studied effects (weight and age). Weight was the primary phenotypic biomarker that discriminated between the two indicators, while age was a discriminating indicator only for the core effect. The Gompertz model was the most efficient, presenting the lowest residuals and greatest convergence. The study reveals new information about the growth of Morada Nova sheep, the white variety, including weight differences between the sexes at all analyzed ages and an inflection point before 90 days of age. These discoveries contribute to the understanding of the breed's growth and help in the formulation of conservation strategies.
英文关键词	Canonical Conservation Gompertz model Sheep Semiarid
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001268905500001
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/2XILL650/405821
推荐引用方式 GB/T 7714	de Assuncao, Marcos Aurelio Victor,de Sousa, Jose Ernandes Rufino,Silveira, Robson Mateus Freitas,et al. Comparative assessment of growth curves in Brazilian white Morada Nova hair sheep breed[J],2024,56(6).
APA	de Assuncao, Marcos Aurelio Victor.,de Sousa, Jose Ernandes Rufino.,Silveira, Robson Mateus Freitas.,Mcmanus, Concepta.,Sales, Daniel Caetano.,...&Facanha, Debora Andrea Evangelista.(2024).Comparative assessment of growth curves in Brazilian white Morada Nova hair sheep breed.TROPICAL ANIMAL HEALTH AND PRODUCTION,56(6).
MLA	de Assuncao, Marcos Aurelio Victor,et al."Comparative assessment of growth curves in Brazilian white Morada Nova hair sheep breed".TROPICAL ANIMAL HEALTH AND PRODUCTION 56.6(2024).