Data/hora: 06/06/2024 05:28:01

Biblioteca(s): | Embrapa Pecuária Sudeste.
Data corrente: | 04/01/2011
Data da última atualização: | 30/06/2023
Autoria: | MACHADO, R.; MENESCAL, R. de A.; SIMPLICIO, A. A.
Afiliação: | RUI MACHADO, CPPSE; R. DE A. MENESCAL, SAPE_RN, SECRETARIA DO ESTADO DA AGRICULTURA, DA PECUÁRIA E DA PESCA/NATAL; A. A. SIMPLICIO, EMPARN, EMPREA DE PESQUISA AGROPECUÁRIA DO RIO GRANDE DO NORTE/NATAL.
Título: | Relationship between fertility and performance of bucks submitted to a competitive serving capacity test.
Ano de publicação: | 2010
Fonte/Imprenta: | In: INTERNATIONAL CONFERENCE ON GOATS, 10., Recife. Annals... Recife: IGA, 2010.
Idioma: | Português
Conteúdo: | This investigation measured the kidding rate achieved by high-performance ranked bucks after evaluation in a competitive serving capacity test (SCt). The study was conducted at Embrapa Caprinos e Ovinos and Fazenda São João, semi-arid region of Northeastern Brazil. Six Anglo-nubian bucks were ranked as top (TOP) and above average (ABO) after a SCt and then individually joined over a 63-day period to six mating groups with different male: females ratio (M:F; 1:30 or 45 or 60). Kidding rates did not differ between ranks but tended (P <0.10) to differ among ratios and varied from 72.4% to 93.0%. Disregarding the rank of males, kidding rate observed up to 21 days of the season was unaffected by M:F, which affected cumulative kidding rate up to 42days (P <0.05) and 63days (P <0.01) of the season. Kidding rate varied throughout the kidding season regardless rank of the buck or M:F ratio. Ranking males into TOP and ABO categories was not efficacious to detect differences in breeding performance at tested M:F ratios. Therefore, SCt was capable to indicate males able to mate, but it did not accurately predict the fertility of individual bucks.
Palavras-Chave: | Fertility.
Thesaurus Nal: | bucks.
Categoria do assunto: | G Melhoramento Genético
Registro original: | Embrapa Pecuária Sudeste (CPPSE)
Exemplares: | CPPSE - (19970-1) - UPC - RA - DD - PROCI-2010.00311 - MAC - 2010.00311 - DIS