Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Rev. Bras. Ciênc. Avic. (2) Autor Saki,AA (2) Zamani,P (2) Eskandarlou,A (1) Haghight,M (1) Hosseini Siyar,SA (1) Naseri Harsini,R (1) Rahmati,MMH (1) Tabatabaei,MM (1) Mais... Palavra-chave Bone mineralization (1) Broken-line regression (1) Egg quality (1) Exponential equation (1) Layer hen (1) Methionine (1) Second order equation (1) Total sulfur amino acids (1) Vitamin C (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2012 (1) 2011 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Assessing bone mineral density, eggshell characteristics and their relationship at peak egg production of laying hens in response to various levels of vitamin C Rev. Bras. Ciênc. Avic. Saki,AA; Rahmati,MMH; Eskandarlou,A; Zamani,P; Hosseini Siyar,SA. In this study, the effects of the inclusion of different vitamin C levels in the diet on bone mineral density (BMD) and eggshell quality was determined. Four experimental diets with four levels of vitamin C (0, 250, 500 and 750 mg/kg) were used. During the experiment, environmental temperature and humidity were 19±1°C and 55±5% respectively. Correlation coefficients of BMD index and shell characteristics with production parameters were also determined. Egg weight, egg mass, hen-day egg production and eggshell quality were not significantly influenced by vitamin C levels. BMD was not affected by vitamin C utilization. A positive correlation was observed between BMD and egg weight and hen-day egg production. A significant positive correlation between... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bone mineralization; Egg quality; Layer hen; Vitamin C. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000300007 Estimates of methionine and sulfur amino acid requirements for laying hens using different models Rev. Bras. Ciênc. Avic. Saki,AA; Naseri Harsini,R; Tabatabaei,MM; Zamani,P; Haghight,M. This experiment was conducted to evaluate the effects of dietary methionine (Met) content on the performance of white commercial laying hens and to determine Met and total sulfur amino acids requirements (TSAA). These requirements were estimated using three statistical models (broken-line regression, exponential and second order equations) to evaluate their abilit to determine amino acid requirements. A total of 216 laying hens (23 wks of age) was used in a completely randomized design (CRD) with six treatments with four replicates of nine birds each. The basal diet contained 15.25% crude protein, 2830.16 kcal/kg ME and 0.24% Met. Synthetic DL-Met was added to the deficient (basal) diet in 0.05% increments to make the other five experimental diets (0.29,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Broken-line regression; Exponential equation; Methionine; Second order equation; Total sulfur amino acids. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300008 Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco