1) calf surviving rate
产活犊率
2) twin-born
活产双犊
4) The female cattle rate
产母犊率
6) calving interval
产犊间隔
1.
We analysed about 800 dairy cattle data of the calving interval, calving season, milk production, calving number, birth weight and sex of the calving.
对江苏省徐州市某奶牛场约800头荷斯坦奶牛1998到1999年产犊间隔与产犊季节、产奶量、产犊胎次、犊牛初生重、犊牛性别等基础资料进行统计分析,结果表明:产犊季节对产犊间隔有极显著的影响(P<0。
2.
The objective of this study was to investigate the effect of non-genetic on 305-day milk yield,datas of Holstein production records which contained the information from 1996 to 2005 were collected form Xinjiang Hutubi Dairy farm in Xinjiang,the effects of year,season,calving interval and parity on Holstein 305-day milk yield were analyzed by least squares means with SAS 8.
1软件的最小二乘方差分析,分析了年度、季节、产犊间隔和胎次对荷斯坦牛305d产奶量的影响。
补充资料：活产
活产
活产指胎龄满28周或体重达1000g，或超过此胎龄(孕期)或体重的胎儿，不论是自然产或手术产，当胎儿全身脱离母体，不论是否断脐或胎盘是否剥离，凡小儿有生命现象(呼吸、心跳、脐血管搏动、随意肌收缩)之一者称活产。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条