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| Trindade Neto,Messias Alves da; Pacheco,Bruna Helena Carvalho; Albuquerque,Ricardo de; Schammass,Eliana Aparecida. |
| It was evaluated the effects of levels of digestible lysine and chelate zinc combined in the diet for laying on the egg quality. It was used 720 birds, from 48 to 60 weeks of age, distributed in a completely randomized design in a 3 × 5 factorial scheme with three levels of zinc and five levels of lysine, applied into six replicates in the experimental units of eight birds per plot. The levels were: 137, 309 and 655 ppm zinc and 0.482, 0.527, 0.582, 0.644 and 0.732% digestible lysine. It was not observed any interaction among digestible lysine and zinc for the primary variables of fractions and egg composition. Levels of zinc reduced egg weight, suggesting the lowest efficiency in nutrient intake. At the highest dietary concentration of zinc, the addition... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Digestible amino acid; Lipid and protein deposition. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000200020 |
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| Souza,Karina Márcia Ribeiro de; Faria,Douglas Emygdio de; Nakagi,Vanessa de Souza; Carão,Ágatha Cristina de Pinho; Pacheco,Bruna Helena Carvalho; Trevisan,Renata Barbieri; Gomes,Gilson Alexandre. |
| The objective of this study was to evaluate the effect of the supplementation of xylanase in diets with reduced energy level on the apparent metabolizable energy corrected for nitrogen, determined with laying hens at 14, 36, 60 and 80 weeks of age. Four digestibility trials were conducted, using 80 Hy-line W36 laying hens aged 14, 36, 60 and 80 weeks of age. Birds were distributed in a completely randomized design in 2 × 2 factorial arrangement (energy level × inclusion of xylanase), totaling four treatments with 10 replicates of two birds each. Treatments were: positive control (balanced diet for their age); positive control + xylanase; negative control (diet with reduction of 100 kcal/kg in the level of metabolizable energy); and negative control +... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Corn; Energy reduction; Metabolizability coefficient; Rearing. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001200008 |
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| Pacheco,Bruna Helena Carvalho; Trindade Neto,Messias Alves da; Albuquerque,Ricardo de; Schammass,Eliana Aparecida. |
| Objetivou-se avaliar a produção de ovos em galinhas Isa Brown alimentadas com dietas com diferentes níveis de lisina digestível e zinco quelato. Utilizaram-se 720 poedeiras marrons, em dois períodos de avaliação, de 24 a 36 e de 48 a 60 semanas de idade. As dietas foram avaliadas em delineamento inteiramente casualizado, em esquema fatorial 5 × 3, composto de 5 níveis de lisina digestível (0,482; 0,527; 0,582; 0,644 e 0,732%) e 3 de zinco quelato (20, 40 e 80 ppm), de modo que cada combinação foi testada em 6 repetições de 8 aves por unidade experimental. Na fase de 24 a 36 semanas de idade, houve influência da interação de lisina digestível e zinco no consumo médio diário de ração e na porcentagem de postura. Na fase de 48 a 60 semanas, a interação foi... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aminoácido sintético; Desempenho; Isa Brown; Mineral; Requerimento. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001100018 |
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