CAJ | 학술논문

犊牛初生重是牛重要的性状之一，对其生长发育和泌乳性能均有一定程度的影响。本文收集了江苏某奶牛场2013年9月~2014年3月的荷斯坦犊牛初生重的共4926条相关记录（其中公犊2245头，母犊2681头），用一般线性模型分析了性别、产犊月份、胎次、在胎天数、产犊时间对荷斯坦犊牛初生重的影响。结果表明：公犊初生重极显著高于母犊（P<0.01）；2月份犊牛初生重最大，9月份最小；随着胎次的增加，犊牛的初生重也呈增长趋势；初生重与在胎天数呈极显著正相关（P<0.01）。该结果为控制荷斯坦犊牛初生重，提高其泌乳性能，降低难产率等提供了科学依据。
독우초생중시우중요적성상지일，대기생장발육화비유성능균유일정정도적영향。본문수집료강소모내우장2013년9월~2014년3월적하사탄독우초생중적공4926조상관기록（기중공독2245두，모독2681두），용일반선성모형분석료성별、산독월빈、태차、재태천수、산독시간대하사탄독우초생중적영향。결과표명：공독초생중겁현저고우모독（P<0.01）；2월빈독우초생중최대，9월빈최소；수착태차적증가，독우적초생중야정증장추세；초생중여재태천수정겁현저정상관（P<0.01）。해결과위공제하사탄독우초생중，제고기비유성능，강저난산솔등제공료과학의거。
Calf birth weight is an important character of cattle,it has a certain extent effects on growth and milk performance.A total of 4926 records about calf birth weight were collected from September 2013 to March 2014(among them 2245 fame calves and 2681 female calves), and the effects of the gender,calving month, parity ,days of pregnancy,calving time on the calf birth weight of calving were analyzed by general linear model. The results showsed that the birth weight of fame calves was signiifcant higher than female(P<0.01). The birth weight that calving in February was largest and in September was smallest. With the increasing of parity, the birth weight was also on the rise. The birth weight was very signiifcantly correlated with days of pregnancy(P<0.01). The results provide scientiifc basis to control calf birth weight,to improve milk performance and to increase the rate of dystocia and so on for dairy cattle production.