Bishop R B, Halloran H R
Poult Sci. 1977 Jan;56(1):383-5. doi: 10.3382/ps.0560383.
The results of four battery trials were used to compare the relative effectiveness of DL-methionine (DLM) and DL-methionine hydroxy analogue (M-analog) as supplements to soybean meal diets fed to broiler strain chicks. A total of 108 observations of 28-day body weight and corresponding total sulfur amino acid (TSAA) consumption were divided equally to form regression models based on TSAA intake containing either DLM or molecular equivalent amount of M-analog. At maximum effective TSAA intake, the predicted chick body weight resulting from DLM supplementation was 695 grams as compared to 693 from M-analog supplementation. At mean TSAA intake, predicted chick weights were 651 and 650 grams resulting from DLM, and M-analog supplementation, respectively. The pooled mean weight of unsupplemented controls was 584 grams. At low levels of supplementation, the linear change in weight per gram TSAA consumed was predicted to be 77.2 grams with DLM and 76.6 grams with M-analog.
四项组套试验的结果用于比较DL-蛋氨酸（DLM）和DL-蛋氨酸羟基类似物（M-类似物）作为添加到饲喂肉仔鸡品系雏鸡的豆粕日粮中的补充剂的相对有效性。基于TSAA摄入量，将总共108次对28日龄体重和相应总硫氨基酸（TSAA）消耗量的观测值平均划分，以形成包含DLM或分子等量M-类似物的回归模型。在最大有效TSAA摄入量时，补充DLM所预测的雏鸡体重为695克，而补充M-类似物时为693克。在平均TSAA摄入量时，补充DLM和M-类似物所预测的雏鸡体重分别为651克和650克。未补充对照组的合并平均体重为584克。在低补充水平下，每消耗1克TSAA体重的线性变化预计DLM为77.2克，M-类似物为76.6克。
