modelo para determinar as exigências de proteína para poedeiras modelling protein utilization in laying hens

Clicks: 271
ID: 134861
2002
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Abstract
O objetivo do trabalho foi elaborar um modelo para estimar as exigências de proteína bruta (PB) para poedeiras leves, usando o método fatorial. Para determinar as exigências de proteína bruta (PB) para manutenção foi utilizada a técnica do balanço de nitrogênio. A exigência de proteína bruta para o ganho de peso foi determinada em função do conteúdo de nitrogênio na carcaça e a eficiência de utilização do nitrogênio da dieta. A exigência de PB, para produção de ovos, foi determinada considerando o teor de PB determinado nos ovos e a eficiência de deposição do nitrogênio no ovo. A partir dos valores das exigências para manutenção, para o ganho e produção foi elaborada uma equação para predizer as exigências diárias de PB (g/ ave/ dia) para poedeiras: PB = 1,94. P0,75 + 0,48.G + 0,301.O, em que P = peso corporal (kg), G = ganho de peso diário (g/dia) e O = massa de ovos produzida (g/ave/dia).
The objective of this study was to determine a model for crude protein requirements (CP) for laying hen by the factorial method. The protein maintenance requirement was determine by the nitrogen balance technique . The crude protein requirement for weight gain was determined based on body nitrogen content and nitrogen efficiency for body deposition. The crude protein requirement for egg production was determined based on the nitrogen content of eggs and nitrogen efficiency for egg deposition. Considering the requirements for maintenance, egg production and weight gain, it was elaborated a protein requirement model for laying hen: PB = 1.94xW.75 + 0.480xG + 0,301x E, where PB = requirement (g/bird/day), W = body weight (kg), G = daily weight gain (g/day) and E = egg mass (g/bird/day).
Reference Key
sakomura2002revistamodelo Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Nilva Kazue Sakomura;Roberta Basaglia;Kleber Tomás de Resende
Journal european journal of lipid science and technology
Year 2002
DOI
10.1590/S1516-35982002000900013
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982002000900013
Keywords
laying hen requirement modelanimal culture

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