老芒麦与无芒雀麦混合干草饲喂奶牛的效果

Effect on Feeding Dairy Cows with Hay Mixed Sibirian Wild Ryegrass with Smooth Bromegrass

以老芒麦与无芒雀麦(干草)3∶1混合的禾草来部分替代干玉米秸秆饲喂荷斯坦奶牛,对奶牛的产奶量和乳成分分析结果表明:试验组的干物质采食量和对照组无明显差异;日产奶量(4%标准乳FCM)提高8.19%,差异不显著(P>0.05);乳蛋白率和体细胞数与对照间差异显著(P<0.05),乳脂率、乳糖率和干物质含量与对照差异不显著(P>0.05)。老芒麦和无芒雀麦混合干草替代部分干玉米秸秆饲喂奶牛,不仅可有效改善奶牛乳品质,而且能够提高经济效益,每头牛增收2.47元/d。

The corn straw were substituted partially by the good grasses according to 3 ： 1 ratio of sibirian wildrye grass （Elymus sibiricus L. ） to smooth bromegrass （Bromus inermis Leyss. ） to feed 14 Holstein cows, and the milk yield and quality were measured and analyzed. The results showed that the daily intake of DM had no obvious difference between the experiment and contrast groups. However, the daily milk yield of 4% FCM increased by 8.19%, but had no significant difference. The milk crude protein and SCC had significant difference （P〈0.05）, the milk fat percentage, lactose and DM were not different （P〉0. 05） between the experiment and contrast groups. The daily profit of each cow in the experiment group could be increased by 2.47 yuan compared with that of the contrast group. Therefore, that the partial corn straw were substituted by the good grasses to feed cows was an efficient way which can not only improve the milk quality, but also increase the farmer＇s profit.