Data/hora: 17/06/2024 14:35:46

Provedor de dados: 	22	
País: 	Brazil	
Título: 	Growth curves of body weight and nutrient deposition and protein requirements for light and semi-heavy pullets

Growth curves, body nutrients deposition and determination of protein requirement for light and semi heavy hen pullets	
Autores: 	Silva, José Humberto Vilar da; Filho, José Jordão; Silva, Edson Lindolfo da; Costa, Fernado Guilherme Perazzo; Naves, Patricia Emília Givisiez; Figueiredo-Lima, Denise Fontana; de Siqueira, Jefferson Costa; Lima, Rodrigo Barbosa.	
Data: 	2017-04-05	
Ano: 	2017	
Palavras-chave: 	Allometry; Bovans Goldline; Body chemical composition; Dekalb White; Modelling.	
Resumo: 	Growth curves of pullets were adjusted to describe the deposition rates of body components and estimate the requirements in protein. Altogether 1500 poultry were randomly distributed in 30 repetitions of 25 birds. The experimental period was divided into four stages (1 to 4 weeks 5 to 11 weeks and 12 to 16 weeks old). The rations formulated based on corn and soybean meal were offered the will. Weekly, pullets were heavy and two birds separates by lineage to be in determining chemical composition of body nutrients. The informations was used to obtain the parameters of the Gompertz model. Allometric relationships were used to describe the changes in body composition in protein, lipid, ash and water in the body gutted and without feathers. The data of body weight growth of the strains pullets Dekalb White and Bovans Goldlina fit to the Gompertz function. The allometric coefficients of fat, water and mineral matter on the basis in proteic weight of the lines Dekalb and Bovans lines were respectively: 0.114 vs 1.160; 0.811 vs 0.429; 0.930 vs 0.189. There are differences among genotypes for growth rates and deposition of body nutrients and fearther. The light-line is earlier. The total protein requirements (maintenance and gain) for pullets of 1 to 4, 5 to 11 and 12 to 16 weeks of age were respectively 4,41; 9,814; 12,612 g / d for Dekalb White and 4.82; 8,859; 7,673g / d to Bovans Goldline. 	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Português	
Identificador: 	http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/14006	
Editor: 	Scientia Agraria Paranaensis	
Relação: 	http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/14006/11230

http://e-revista.unioeste.br/index.php/scientiaagraria/article/downloadSuppFile/14006/2110	
Formato: 	application/pdf	
Fonte: 	Scientia Agraria Paranaensis; Vol. 16, No 1 (2017); 78-87

1983-1471