为分析苹果渣麦秸混合青贮饲料替代部分玉米黄贮对荷斯坦公牛增重性能、血液生化指标及经济效益的影响，选取了月龄、体重相近的健康牛52头，采用配对试验设计分为试验组（60%苹果渣青贮+40%玉米黄贮）和对照组（100%玉米黄贮），进行了饲养试验。结果显示：①试验组的平均日增重、饲料转化率相比对照组分别提高18.8%、15.5%，差异显著（P<0.05），而且饲料成本降低3.5%；②试验组和对照组的血液生化指标无显著差异（P>0.05）；③从经济效益角度分析，试验组比对照组头均多盈利233.52元。说明用苹果渣麦秸混合青贮饲料替代60%的玉米黄贮，对公牛血液各项生化指标无影响，且可显著提高日增重和饲料转化率，同时降低饲养成本。%To analysis the effects of apple pomace by mixed silage on dairy bull about gain performance, blood biochemical indexes and economic beneifts. Taking iffty-two health Holstein bull with the similar weight from six months to twelve months randomly divided into 2 treatments :test group (60% apple pomace by mixed silage and 40% Corn silage),control group (100% Corn silage) by using matched-pair design. The trial period lasted for 54 days. The results Showed that,①There were signiifcant differences between test group and control group in ADG and G/F(P<0.05), which were increased by 18.2% and 15.2%.Comparing with control group , DMI in test group was increased , but there was no signiifcant differences between two groups(P>0.05) .②There was no signiifcant differences between test group and control group in blood biochemical indexes (P>0.05) .③The economic effciency analysis was showed that the proift of the test group was increased about 233.52 yuan in comparison with the controlgroups. With replacing 60% corn silage with apple pomace by mixed silage, there was no significant differences in blood biochemical indexes, but ADG and G/F were increased in test group, and it reduced the feeding cost and enlarged the feedstuff to get the twin purpose about the agricultural residues, energy-saving and emission-reduction and ameliorating the economic effciency of farming .
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