摘要
为了研究限量饲喂和自由采食酸化奶对犊牛生长发育和经济效益的影响,试验采用完全随机的方法,选择健康状况良好的荷斯坦母犊18头,随机均分为试验组和对照组,试验组限量饲喂酸化奶,对照组自由采食酸化奶。结果表明：60日龄犊牛的生长性能限量饲喂组好于自由采食组;饲养成本和腹泻率限量饲喂组低于自由采食组。说明限量饲喂可以提高犊牛增重,降低养殖成本和腹泻率,并且断奶应激反应较自由采食的犊牛小,更容易适应断奶后的饲养条件,后期生长潜力更大,选择限量饲喂的饲养方法更有利于牧场的犊牛培育。
To research the effects of restricted feeding and ad libitum aeidifed milk on growth and economic benefits in calves, 18 Holstein female calves in good health were seleeted and divided randomly into experimental group and the control group. Calves in the experimental groups were fed with acidified milk by restrieted feeding, and the control group was fed with acidified milk for ad libitum. The results showed that the growth performance of the limited feeding group in 60-day-old calves is better than that of ad libitmn group ; feeding costs and diarrhea rate in limited feeding group are lower than those of ad libitum group, which illustrate that the methods of restricted feeding may improve the weight gain, deerease costs and diarrhea rate of ealves. Meanwhile, the weaning stress of ealves in restrieted feeding group is less than that of free feeding group, and easier to adapt feeding conditions after weaning, and has greater growth potential in later period. Accordingly, the method of restricted feeding is more benefit for the cultivation of calves in pasture.
作者
周磊
张巧娥
刘云翔
何举
梁小军
ZHOU Lei;ZHANG Qiaoe;LIU Yunxiang;HE Jtl;LIANG Xiaojun(Agricuhure College in Ningxia University, Yinehuan 750021 ,China;Ecological Pasture in Helan Zhongdi in Ningxia, Helan 750205 ,China;Institute of Animal Science in Academy of Agrieuhural and Forestry Sciences in Ningxia, Yinehuan 750002,China)
出处
《黑龙江畜牧兽医》
CAS
北大核心
2018年第12期58-62,共5页
Heilongjiang Animal Science And veterinary Medicine
基金
国家肉牛牦牛产业技术体系资助项目(CARS-37)
宁夏高等学校一流学科建设(草学学科)资助项目(NXYLXK2017A01)
关键词
限量饲喂
自由采食
酸化奶
生长发育
经济效益
犊牛
restrieted feeding
ad libitum feeding
acidified milk
growth and performance
economic benefits
ealves
