Data/hora: 25/06/2024 14:32:07

Biblioteca(s): | Embrapa Semiárido.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | B - 1
Data corrente: | 29/04/2015
Data da última atualização: | 29/03/2016
Autoria: | NOGUEIRA, D. M.; CAVALIERI, J.; GUMMOW, B.; PARKER, A. J.
Afiliação: | DANIEL MAIA NOGUEIRA, CPATSA; J. CAVALIERI, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Australia; B. GUMMOW, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Australia; A. J. PARKER, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Australia.
Título: | The timing of the commencement of the breeding season in Boer and rangeland goats raised in the tropics of Queensland, Australia.
Ano de publicação: | 2015
Fonte/Imprenta: | Small Ruminant Research, v. 125, p. 101-105, 2015.
DOI: | 10.1016/j.smallrumres.2015.02.013
Idioma: | Inglês
Conteúdo: | This study aimed to determine the timing of the onset of the breeding season in Boer and rangeland goats raised in a tropical region of northern Queensland. The experiment wascarried out using 25 Boer and 20 rangeland female goats. Boer and rangeland goats were kept on the same pasture in the absence of males and supplemented to provide nutritional requirements above maintenance. Blood samples were collected once weekly from December 2011 to May 2012 and analyzed for concentrations of progesterone. The mean time to first ovulation was found to occur earlier in Boer compared to rangeland goats (64.7 ± 5.0 days vs. 87.7 ± 5.6 days, respectively; P < 0.05). Differences in survival curves (P < 0.05) for the timing of onset of first ovulation between breeds were also detected. Boer goats started ovulating in December (8.3%) and had all ovulated by March while most rangeland goats started ovulating in March (84%) and had all ovulated by the end of April. These results demonstrate that in a tropical region of north Queensland Boer goats commence ovulatory cycles earlier than rangeland goats which may be beneficial if an earlier start to the breeding season is preferred.
Palavras-Chave: | Goat; Raça Boer.
Thesagro: | Cabra; Caprino; Pastagem; Produção animal; Progesterona; Reprodução.
Thesaurus Nal: | Australia; Progesterone.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
Registro original: | Embrapa Semiárido (CPATSA)
Exemplares: | CPATSA - (54599-1) - UPC - AP - DD -  -  -  - DIS