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不同断奶日龄对奶公犊生长性能和体尺指标的影响

作  者:
王宝地
单  位:
河北北方学院
关键词:
奶公犊;体重;体高;体直长;体斜长
摘  要:
30头新生荷斯坦奶公犊出生日期和体重相近,随机分成6组,对照组按常规饲喂鲜牛奶,60日龄断奶;各试验组分别于10、20、30、40和50日龄断奶,试验期为60d。结果表明:试验结束时,20日龄断奶组、30日龄断奶组的体重、平均日增重均显著高于对照组,40日龄断奶组、50日龄断奶组与对照组间无明显差异;各试验组犊牛与对照组在体长和体斜长上无显著差异。
关键词:
milk male calves;;weight;;body height;;body straight long;;body inclined long
摘  要:
Close to 30 head new Holstein milk male calves date of birth and weight, random divided into 6 groups and control group according to the conventional feeding fresh milk, sixty days age weaning. Each treatment group respectively on ten, twenty, thirty, forty and fifty days of age weaning, trial period for sixty days. The results prove that the end of the study, age weaning weight, average daily group of 20 days and 30 days of age weaning groups were significantly higher than those in the control group. 40 days, 50 days of age weaning groups and control group was no significant difference. The treatment group and control group calves in body length and body oblique no significant difference. The calves tube around the average of the differences are significant.

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