Data/hora: 21/06/2024 23:48:52

Biblioteca(s): | Embrapa Semiárido.
Data corrente: | 04/03/2022
Data da última atualização: | 27/09/2022
Autoria: | SILVA FILHO, J. R. V. da; MOURA NETO, J. B. de; ARANDAS, J. K. G.; SANTOS, L. T. A. dos; QUEIROZ, M. A. A.; NOGUEIRA FILHO, P. A. de; VOLTOLINI, T. V.; MESQUITA, F. L. T. de; CARVALHO, F. F. R. de; RIBEIRO, M. N.
Afiliação: | JOSÉ RENALDO VILAR DA SILVA FILHO, UFRPE; JOÃO BANDEIRA DE MOURA NETO, UFRPE; JANAINA KELLI GOMES ARANDAS, UFRPE; LAYS THAYSE ALVES DOS SANTOS, UNIVASF; MÁRIO ADRIANO ÁVILA QUEIROZ, UNIVASF; PAULO ALVES DE NOGUEIRA FLHO, UNIVASF; TADEU VINHAS VOLTOLINI, CPATSA; FERNANDO LUCAS TORRES DE MESQUITA, IPA; FRANCISCO FERNANDO RAMOS DE CARVALHO, UFRPE; MARIA NORMA RIBEIRO, UFRPE.
Título: | Does crossbreeding improve the performance and carcass traits of Berganês sheep?
Ano de publicação: | 2021
Fonte/Imprenta: | Tropical Animal Health and Production, v. 53, n. 5, 451, 2021.
DOI: | https://doi.org/10.1007/s11250-021-02896-9
Idioma: | Inglês
Conteúdo: | This study aimed to evaluate the performance and carcass of lambs of diferent genotypes through univariate and multivariate analysis. Intact male lambs of the Berganês (BG), Berganês x Santa Inês (BSI), and Berganês x Dorper (BD) genotypes and the control group Dorper x Santa Inês (DSI) were used. Eight lambs of each genotype were used, aged between 4 and 5 months, with an average initial weight of 27.52±3.79 kg, distributed in a completely randomized design. Data were tested by analyzing variance, followed by Tukey?s test and principal component analysis (PCA) and discriminant analysis (DA). Slaughter body and average daily gain were higher for BD and BG than BSI (P<0.05). On the other hand, BSI, BD, and DSI showed higher cold carcass yield than BG (P<0.05). Lower cooling losses (CL) and more excellent conformation were observed in DSI (P<0.05). BD showed a higher carcass compactness index (CCI), and DSI showed a higher leg compactness index (LCI) (P<0.05). PCA produced seven components explaining 83.59% of total data variability. Based on the discriminant analysis, LCI, CL, CCI, and conformation showed greater power to distinguish the genotypes, with a high index of the lambs? classifcation to their respective genotypes. The crossbreeding improved carcass yield and reduced cooling weight loss. The Berganês ecotype and its crossbreeds have performance and carcass traits compatible with the DSI genotype. According to the DA, heterogeneity was found between the Berganês ecotype and its crossbreeds, with CL, LCI CCI, and conformation showing greater discrimination power.
Palavras-Chave: | Análise de componentes principais; Ovelhas Berganês; Ovinos mestiços; Rendimento de carcaça.
Thesagro: | Ovino; Terminação.
Thesaurus Nal: | Carcass yield; Discriminant analysis.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
Registro original: | Embrapa Semiárido (CPATSA)
Exemplares: | CPATSA - (59818-1) - UPC - AP - DD -  -  -  - DIS