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| Bendezu,Hilda Cristina Palma; Sakomura,Nilva Kazue; Hauschild,Luciano; Silva,Edney Pereira da; Dorigam,Juliano Cesar de Paula; Malheiros,Euclides Braga; Fernandes,João Batista Kochenborger. |
| The objective of this study was to measure the response of Dekalb White laying hens to different intakes of digestible methionine + cystine (met+cys) to optimise their performance. Two hundred eighty-eight Dekalb White laying hens, ranging in age from 33 to 48 weeks, were used in the study. The birds were randomly allocated into eight treatment (levels of met+cys and the control treatment) groups with six replicates of six hens per unit. The experimental diets consisted of seven increasing levels of met+cys (1.37, 2.75, 4.14, 5.51, 6.89, 7.92 and 8.95 g kg−1) and were prepared using a dilution technique. A control treatment was used to confirm that the limiting response was due to met+cys intake. Egg production, feed intake, egg weight, egg mass and feed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broken Line; Dose-response; Models; Requirement; Statistic. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000100015 |
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| Silva,Edney Pereira da; Sakomura,Nilva Kazue; Dorigam,Juliano Cesar de Paula; Malheiros,Euclides Braga; Peruzzi,Nelson José. |
| ABSTRACT The purpose of this research was analyze the fit of Gompertz function with or without fixing some of the parameters to describe body growth and major bodily chemical constituents of growing pullets. Weekly, data of body weight and chemical components of body free of feathers and feathers were collected from 1,200 chicks of four laying strains (Hisex Brown, Hisex White, Hy Line Brown and Hy Line White W36) until 18 weeks of age. The variables were subjected to two adjustments fixing, or not, some parameters of Gompertz function. The allometric model parameters were calculated for the chemical components. The lipid and protein composition of the body free of feathers were the components with the biggest change in the last weeks. Moreover, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carcass; Growth curve; Weight protein; Feather. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000300572 |
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| Silva,Edney Pereira da; Sakomura,Nilva Kazue; Araújo,Jose Anchieta de; Hauschild,Luciano; Malheiros,Euclides Braga; Dorigam,Juliano Cesar de Paula. |
| Objetivou-se descrever o máximo potencial de deposição de nitrogênio e estimar a ingestão de metionina+cistina pela técnica do balanço de nitrogênio e abate comparativo. Foram realizados ensaios no período de 14 a 28, 56 a 70 e 98 a 112 dias de idade, utilizando 168 frangas Dekalb White, distribuídas em sete tratamentos e oito repetições. Os tratamentos consistiram de níveis de proteína na dieta, variando de 75 a 435 g kg-1 de matéria seca, em que a metionina+cistina foi o primeiro aminoácido limitante. As variáveis coletadas pelo abate comparativo foram nitrogênio ingerido e depositado e, nos ensaios de balanço de nitrogênio, coletaram-se ingestão e excreção de nitrogênio. Por meio da relação exponencial entre ingestão e deposição de nitrogênio,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Metionina+cistina; Balanço de nitrogênio; Abate comparativo. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013001100024 |
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