酒糟-单细胞蛋白(SCP)及其对畜禽饲养效应的研究 Ⅳ.酒糟-SCP取代日粮中常规蛋白质饲料对母牛泌乳性能的影响

试验选取黑白花母牛１８头，采用３因子２重复试验设计，研究酒糟－ＳＣＰ对母牛泌乳性能的影响。供试母牛随机分为３组和３种处理。酒糟－ＳＣＰ按Ｎ当量，以不同梯度取代日粮精料补充料中的大豆饼进行饲养试验。取代比例（酒糟－ＳＣＰ％＋大豆饼％）处理１、２和３分别为：０＋２４．０，７．６＋１８．０和１５．２＋１２．０。结果指出，处理２较处理１日泌乳量提高６．１２％（ｐ＜０．０５）；处理３则相应提高１６．５６％（ｐ＜０．０１）。单位泌乳消耗精料补充料，组间差异不显著（ｐ＞０．０５）。试验期末３种试验处理的乳牛其乳脂率和无脂固形物均呈下降趋势。

Studies on Single Cell Protein (SCP)-Grain Stillage and Its Feeding Effect on Domestic Animal and Poultry .Influence of SCP-Grain Stillage Replacing Routine Protein Feed in Ration on Milk Performance of Dairy Cows

Eighteen Black-and-White cows were used in a three factorial design with two duplicates to study the effect of SCP-Grain stillage (GS) on milk performance of cows.Dairy cows were divided randomly into three pens and three treatments.According to equivalent N,SCP-GS (type ) was used to replace the same amount of soybean cake (SMC) and the replacement preportions (SCP-GS%+SMC%) of treatments 1,2 and 3 in the concentrate supplement of ration were:0+240,76+180 and 152+120 respectively.The results showed that milk yield/day in treatment 2 was 612% (p<005) higher than that in treatment 1,and that in treatment 3 1656% (p<001) higher than that in treatment 1.There was no significant (p>005) difference in concentrate supplement to lactation ratio among different treatments.The milk fat and SNF percentages of dairy cows in all three treatments were decreased by the end of the experiment.