昌吉地区荷斯坦牛年龄对体尺体重的影响

【目的】分析荷斯坦牛年龄与体尺、体重之间的关系,了解荷斯坦牛年龄与体尺体重之间的相关关系,从而提高生产性能。【方法】通过对昌吉地区测定的2 934头不同年龄荷斯坦牛体尺体重的资料进行统计,用SPSS13.0软件进行单因素方差分析与Duncan氏多重比较分析。【结果】荷斯坦牛年龄对体尺、体重有显著的影响,而体尺体重与牛的生产性能有很大的相关性。【结论】荷斯坦牛在舍饲饲养管理条件下2~3岁时生长发育迅速,是牛生长发育的重要时期,到3岁时平均体重可达成年(按4岁为成年)牛体重的94%以上,体高、体长指标可达成年牛的97%以上。

Impact of Age of Changji Holstein Cows on Its Body Size and Body Weight

【Objective】 In order to analyze relations between the age,body size and body weight of Holstien cattle.the contact between the age,body size and body weight of Holstein cows were obtained to improve production performance.【Method】Based on the determination of the 2 934 Changji Holstein cattle of different age,body size and body weight,their data were analyzed by SPSS13.0 software with ANOVA,Duncan' multiple comparisons【Result】The results showed that Holstein cow age has significant effect on body size,body weight.The cattle weight and body size has very great correlation with production performance of Holstein cows.【Conclusion】The 2 and 3 years old Holstein cattle grew and developed rapidly under drylot feeding and management conditions,which is an important period of growth and development of the cattle.The average weight of 3 years old cattle can reach more than 94% of the weight of audult cattle,whose index of body height,body length can reach more than 97% of audult cattle.