摘要
[目的]探究不同方式制备的全株玉米青贮饲喂奶牛后,对其生产性能和经济效益的影响。[方法]选定中国荷斯坦牛开展全株玉米青贮饲喂试验。将28头奶牛随机分为对照组和试验组,每组14头。前者饲喂不添加菌剂制备的全株玉米青贮,后者饲喂添加青贮菌剂制备的全株玉米青贮。统计各组奶牛日均干物质采食量、日均产奶量、料重比、乳脂率和乳蛋白率,计算各组奶牛日均经济效益和试验期总经济效益。[结果]采用添加青贮菌剂制备的全株玉米青贮饲喂奶牛后,奶牛日均干物质采食量和料奶比与对照组差异不显著,但日均产奶量、平均乳脂率和乳蛋白率显著提高(P<0.05)。每头牛日均产奶量增加1.91 kg,乳脂率增加0.22个百分点,乳蛋白率增加0.06个百分点。试验组经济效益明显提高,每头牛日均经济效益增加4.73元,正试期内总经济效益增加1 986.60元。[结论]采用添加青贮菌剂的全株玉米青贮饲喂奶牛,能有效提高奶牛的生产性能和经济效益。
[Objective]The purpose of this study was to explore the effects of whole-plant corn silage treated by different methods on the production performance and economic benefits of dairy cows.[Method]In this experiment,Chinese Holstein cows were selected to carry out whole-plant corn silage feeding test.28 cows were randomly divided into control group and experimental group,with 14 cows in each group.The former was fed with whole-plant corn silage prepared without adding microbial agent and the latter was fed with whole-plant corn silage prepared with microbial agent.The average daily dry matter intake,average daily milk yield,feed/milk ratio,milk fat rate and milk protein rate of each group were calculated,the average daily economic benefits and total economic benefits of each group were calculated.[Result]The average daily dry matter intake and feed/milk ratio of dairy cows were not significantly different from the control group,but the average daily milk yield,average milk fat rate and milk protein rate were significantly increased(P<0.05).The average daily milk yield per cow increased by 1.91 kg,the milk fat rate increased by 0.22%,and the milk protein rate increased by 0.06%.The economic benefit of the experimental group was significantly improved,the average daily economic benefit of each cow increased by 4.73 yuan,and the total economic benefit of trial period increased by 1986.60 yuan.[Conclusion]The whole-plant corn silage added with microbial agent was used to feed dairy cows,which could effectively improve the production performance and economic benefits of dairy cows.
作者
王诚
董桂红
范秋苹
翟桂玉
刘德娟
WANG Cheng;DONG Guihong;FAN Qiuping;ZHAI Guiyu;LIU Dejuan(Shandong Jianyuan Biotechnology Co.,Ltd.,Tai’an Shandong 271000;Animal Husbandry Station of Shandong Province,Jinan Shandong 250100;Animal Disease Prevention and Control Center of Tai’an,Tai’an Shandong 271000)
出处
《中国乳业》
2023年第4期57-60,共4页
China Dairy
关键词
全株玉米青贮
奶牛
生产性能
经济效益
whole-plant corn silage
dairy cow
production performance
economic benefit
