基于DHI数据的非参数统计方法分析产犊季节对奶牛产奶性状的影响

Analyzing Effects of Calving Seasons on Dairy Milk Yield with Non-parametric Statistical Method Based on DHI Data

产犊季节对奶牛产奶有着重要的影响。随着奶牛生产性能测定(DHI)技术的逐渐普及,DHI已经成为提高奶牛场饲养管理水平和牛奶品质的有效工具。通过整理奶牛场多年的DHI检测数据,使用非参数统计方法,分析产犊季节对奶牛产奶性状的影响。结果表明,春秋季节产犊的奶牛产奶性能更高。该研究结果可为奶牛场科学制定奶牛配种和产犊计划、充分挖掘和利用DHI数据提供重要参考。

Calving season is an important factor affecting the dairy milk yields. With the popularization of the DHI, it be- comes an effective tool to improve the levels of farm management and the milk quality. Based on DHI data of several years in a diary farm, effects of the calving season on the diary milk yield were analyzed with non-parametric statistical method. The results showed that the milk production in spring and autumn were obviously high. It will provide a reference for making plans of mating and calving and fully using DHI data.