Kuzmicky D D, Kohler G O, Walker H G, Mackey B E
Poult Sci. 1977 Sep;56(5):1560-5. doi: 10.3382/ps.0561560.
In four trials, experimental diets were fed to one week old broiler cockerels for a period of 14 days to compare the availability of oxidized sulfur amino acids to DL-methionine on an equimolar basis. The data were analyzed by the slope-ratio technique. Chick weight gain per unit feed consumed was the dependent variable and dietary level of supplemental amino acid was the independent variable. There was no significant (P=.05) differences in availability of DL-, L-, and D-methionine. D-, DL-, and L-methionine sulfoxide were 52, 59 and 77%, respectively, as available as DL-methionine. The differences in availability between the three sulfoxides and DL-methionine were significant. Both DL- and D-methionine sulfoxide were significantly less available than L-methionine sulfoxide. No response was obtained from L-cysteic acid or DL-methionine sulfone.
在四项试验中，将实验日粮喂给1周龄的肉用小公鸡，持续14天，以在等摩尔基础上比较氧化型硫氨基酸与DL-蛋氨酸的可利用性。数据采用斜率比技术进行分析。每消耗单位饲料的雏鸡体重增加为因变量，补充氨基酸的日粮水平为自变量。DL-、L-和D-蛋氨酸的可利用性没有显著（P = 0.05）差异。D-、DL-和L-蛋氨酸亚砜的可利用性分别为DL-蛋氨酸的52%、59%和77%。三种亚砜与DL-蛋氨酸之间的可利用性差异显著。DL-和D-蛋氨酸亚砜的可利用性均显著低于L-蛋氨酸亚砜。L-半胱氨酸或DL-蛋氨酸砜未得到反应。
