木薯渣对奶牛产奶量和奶品质的影响

试验选用30头体重约400kg、健康无病、胎次相同,且处于泌乳中期,产奶量相近（P〉0.05）的荷斯坦奶牛,随机分为2组：对照组10头,用产奶期正常饲料饲喂;试验组20头,每头牛在对照组日粮基础上投5kg木薯渣替代5kg苜蓿干草,研究木薯渣对奶牛产奶量及奶品质的影响。结果表明：在产奶期日粮中添加木薯渣对奶牛的产奶量没有显著影响（P〉0.05）;从乳成分分析统计数据看,其对奶牛的乳成分影响不明显,乳脂、乳蛋白、乳糖、乳固形物和非脂固形物均无显著差异（P〉0.05）。

Effect of Cassava Residue on Milk Yield and Quality of Dairy Cattle

30 healthy and mid-lactation Holstein cows with the 0 parity , body weight about 400 kg , similar milk production ( P<0.05 ) were randomly divided into two groups : 10 cows in control group were fed on lactation period normal diet , 20 cows in treatment group were fed on the diet putting into five kilograms cassava residue inplace of lucerne hay at the control diet basis , to study the effect of cassava residue on milk yield and quality of dairy cattle. The results indicated that putting cassava residue into lactation period diet had no significantly influence on milk yield ( P<0.05 ) . According to test statistic datas of milk compositions , it had no remarkable effect on dairy cow's milk compositions , milk fat , milk protein , lactose , milk solids and non-fat solid ( P<0.05 ) .