Potter L M, Shelton J R
Poult Sci. 1976 Jul;55(4):1535-43. doi: 10.3382/ps.0551535.
A study was conducted to determine the effects of adding methionine, lysine and a fermentation residue to practical-type diets containing 24, 27, and 30% protein for young turkeys. A 2 X 2 X 2 X 3 factorial design of variables was used in each of two seven-week experiments. A total of 864 poults were divided into groups such that the 24 diets were each fed to 9 males and 9 females in each experiment. Seven-week body weights were increased 11.4% from 0.1% added DL-methionine and decreased 13.7% from 1.5% added fermentation residue, L-Lysine added at 0.157% failed to increase significantly body weights. Increasing the protein from 24 to 27 and 30% increased seven-week body weights 16.7 and 28.9%, respectively. As dietary protein increased, the increases in body weight from added methionine became smaller, i.e., 16.9, 14.4 and 4.8% in diets containing 24, 27, and 30% protein, respectively. Plots of body weight on (1) amount of methionine and on (2) amount of total sulfur amino acids in the diet show a closer relationship with the latter. The sulfur amino acid requirement of poults to seven weeks of age appears to be at least 1.03%, the highest quantity used in this study. The fermentation residue, a product not currently marketed, remains after the isolation of spectinomycin from controlled fermentation of Streptomyces flavopersicus and contains 14% dry matter. The cause of the depressed growth from the added fermentation residue has been discussed.
进行了一项研究，以确定在含24%、27%和30%蛋白质的实用型日粮中添加蛋氨酸、赖氨酸和一种发酵残渣对幼火鸡的影响。在两个为期7周的实验中，每个实验都采用了2×2×2×3的变量析因设计。总共864只雏火鸡被分成若干组，每个实验中24种日粮每组分别饲喂9只雄性和9只雌性。7周龄时的体重，添加0.1%的DL-蛋氨酸使其增加了11.4%，添加1.5%的发酵残渣使其降低了13.7%，添加0.157%的L-赖氨酸未能显著增加体重。将蛋白质含量从24%提高到27%和30%，7周龄时的体重分别增加了16.7%和28.9%。随着日粮蛋白质含量的增加，添加蛋氨酸后体重的增加幅度变小，即在含24%、27%和30%蛋白质的日粮中分别为16.9%、14.4%和4.8%。体重与（1）蛋氨酸添加量和（2）日粮中总含硫氨基酸量的关系图显示，体重与后者的关系更为密切。7周龄雏火鸡的含硫氨基酸需求量似乎至少为1.03%，这是本研究中使用的最高量。该发酵残渣是在从黄色产色链霉菌的受控发酵中分离出壮观霉素后剩余的产物，目前尚未上市销售，含有14%的干物质。文中讨论了添加发酵残渣导致生长受抑制的原因。
