Glutamine for broilers from 21 to 42 days maintained in thermoneutral environment

• Autor(a) principal: Figueiredo, Érika Martins de
• Data de Publicação: 2015
• Outros Autores: Donzele, Rita Flávia Miranda de Oliveira, Donzele, Juarez Lopes, Sousa, Katiene Régia Silva, Cardoso, Evandro Ferreira, Sélos, Aline Nantes, Silva, Amanda Dione, Jacob, Rodrigo de Freitas
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Semina. Ciências Agrárias (Online)
• Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16659
• topic: Birds; Gene expression; HSP; Thermal environment.; Animal Production; Ambiente térmico; Aves; Expressão gênica; HSP.; Produção Animal

This study was conducted to evaluate the effects of dietary glutamine levels on performance and carcass traits of broilers kept in thermoneutral environment from 21 to 42 days of age. Hundred sixty eight male broilers Cobb® with 21 days of age and initial body weight of 900 ± 4.71 g were allotted in a completely randomized design with four levels of glutamine (0.00, 0.50, 1.00 and 1.50%), seven replicates with six birds each. Performance, relative weights of carcass, breast, thigh and drumstick and mRNA expression of HSP70 were evaluated. Birds were housed in environmental chambers with temperature of 23.2 ±  1.77ºC and relative humidity of 70 ± 5.82% corresponding to a calculated BGHI of 72 ± 2.75, which characterize thermoneutral environment. There was no effect of glutamine on feed intake, weight gain, and feed conversion of broilers. Glutamine had no influence on absolute and relative weights of carcass, breast, thigh, and drumstick of birds. There was not effect of dietary glutamine on mRNA expression of HSP70. Dietary glutamine did not affect performance and carcass traits of broilers from 21 to 42 days of age maintained in thermoneutral environment.