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首页> 外文期刊>The Journal of Agricultural Science >Application of the law of diminishing returns to estimate maintenance requirement for amino acids and their efficiency of utilization for accretion in young chicks
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Application of the law of diminishing returns to estimate maintenance requirement for amino acids and their efficiency of utilization for accretion in young chicks

机译：递减回报法的应用估算氨基酸维持要求及其在年轻雏鸡中吸收的利用效率

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摘要

Suitability of the monomolecular equation, specifically re-parameterized for analysing energy balance data, has recently been investigated in broilers and turkeys. In the current study, this equation was applied to literature data from growing chicks fed crystalline amino acid (AA) diets, in order to provide estimates for AA requirements for maintenance, body-weight gain and protein accretion. Non-linear regression was used with the data to estimate parameters and combine them to determine other biological indicators. The predictive ability of the model was evaluated with reference to model behaviour when fitting the data, biologically meaningful parameter estimates and statistical performance. The model estimated the maintenance requirements for valine, threonine and lysine to be in the range 80-111, 96-109 and 52-209 mg/kg of liveweight/day, respectively, depending on the response criterion. Requirements for maintenance were in good agreement with values reported previously. Average efficiency of recovering AAs in whole body protein, between maintenance and fourxmaintenance, was in the reported range of 0p"80-1p"0 and greatest at low intakes and decreasing as intakes increase.
机译：最近在肉鸡和火鸡中研究了单分子方程，特别是用于分析能量平衡数据的单分子方程的适用性。在目前的研究中，将该等式应用于来自生长雏鸡喂养晶体氨基酸（AA）饮食的文献数据，以便为AA维持，体重增加和蛋白质增量的要求提供估计。非线性回归与数据一起使用以估计参数并将它们组合以确定其他生物指标。在拟合数据，生物学有意义的参数估计和统计性能时，参考模型行为评估模型的预测能力。该模型估计缬氨酸，苏氨酸和赖氨酸的维护要求分别在80-111,96-109和52-209 mg / kg的活重/日，这取决于响应标准。维护要求与先前报告的价值观吻合良好。在维护和Fourxmaint之间，在整个身体蛋白质中回收AAS的平均效率在报告的0P“80-1P”0和最大的摄入量和摄入量下降。

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