McDonald M W, Morris T R
Br Poult Sci. 1985 Apr;26(2):253-64. doi: 10.1080/00071668508416811.
Data relating egg output to daily intakes of lysine, methionine, tryptophan, isoleucine and valine have been analysed using both published and unpublished sources. Amino acid requirements in mg/d for individual pullets were estimated by the following equations: (Table: see text) where E = egg output in g/d and W = body weight in kg. Response curves for flocks of pullets were calculated using the Reading model and optimum intakes were derived for various body weights, egg outputs and ratios of input costs to output values. Estimates of amino acid maintenance requirements were related to reported values for the adult cockerel and the amino acid requirement for egg output was related to the digestibility of amino acids and the composition of egg protein. Procedures are suggested for deriving response coefficients for other essential amino acids.
已使用已发表和未发表的资料来源，分析了蛋产量与赖氨酸、蛋氨酸、色氨酸、异亮氨酸和缬氨酸每日摄入量之间的关系。通过以下公式估算个体小母鸡每日毫克的氨基酸需求量：（表格：见正文）其中E = 每日产蛋量（克），W = 体重（千克）。使用雷丁模型计算小母鸡群体的反应曲线，并得出不同体重、蛋产量以及投入成本与产出价值比率下的最佳摄入量。氨基酸维持需求量的估算与成年公鸡的报告值相关，而产蛋所需的氨基酸量与氨基酸的消化率和蛋蛋白组成相关。建议了推导其他必需氨基酸反应系数的程序。
