Data/hora: 08/06/2024 03:37:03

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	09/04/1996	
Data da última atualização: 	03/04/2017	
Autoria: 	RISCO, C. A.; CHENOWETH, P. J.; LARSEN, R. E.; VELEZ, J.; SHAW, N.; TRAN, T.; CHASE JUNIOR, C. C.	
Título: 	The effect of gossypol in cottonseed meal on performance and on hematological and semen traits in postpubertal Brahman bulls.	
Ano de publicação: 	1993	
Fonte/Imprenta: 	Theriogenology, v.40, n.3, p.629-642, 1993.	
Idioma: 	Inglês	
Conteúdo: 	The effects of a cottonseed meal diet containing high levels of free gossypol on hematological traits, including erythrocyte osmotic fragility and semen characteristics, were examined during an 11-week period. Eigh Brahman bulls were randomly assigned to 1 of 2 groups. The control group (n=4) was fed a mixture of soybean meal and corn. The treated group (n=4) was fed a mixture of cottonseed meal and corn. Both groups were allowed hay free choice. The treated group consumed 8.2 g of free gossypol per bull per day. Th percentage of normal spermatozoa was lower (P<0.01) in the treated than in the control group from Weeks 5 (49+-9.8 vs 83+-3.2%), which was primarily influenced by changes in mid piece morphology in the treated bulls. Erythrocyte osmotic fragility was higher (P<0.001) in the treated than in the control group over the entire study period, althrought group values diverged more acutely from Week 7 of treatment. Sperm motility was lower (P=0.04) in treated bulls than in control bulls at Week 9 (52+-9.8 vs 82+-6.2%). These data suggested that concurrent discernable changes in bull erythrocyte osmotic fragility and in semen characteristics can occur following commencement of a diet containing 8.2g of free gossypol per day.	
Palavras-Chave: 	Bull.	
Thesagro: 	Animal; Reprodução; Sêmen; Touro.	
Thesaurus Nal: 	reproduction.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (31476-1) - ADD - SP - PP - SP14772 -  - 14772 - DIS