放牧加补饲条件下短角牛生长发育规律研究

Research on Growth and Development of Short Horn Cattle Raising Under the Mode of Grazing Plus Supplementary Feeding

[目的]为了探讨短角牛的生长发育规律及体重与各体尺间的相关性,[方法]对放牧加补饲条件下短角牛的体重、体尺进行测定,对所测定数据进行分析。[结果]结果表明:短角牛体重、体尺的变化随着月龄增加逐渐增加;短角牛具有早期生长发育快的特点,公牛、母牛体重从出生到6月龄时达到绝对生长高峰,日增重分别达到1093.30 g和973.64 g;公牛、母牛体重的相对生长曲线较一致,整条曲线大致呈下降趋势;生长发育阶段体重和体尺的相关性与性别、月龄有关。[结论]应注重短角牛早期的饲养管理,短角牛公牛的营养水平应高于母牛。

[Objective]In order to investigate the rule of growth and development of short horn cattle under the raising patterns of grazing plus supplementary feeding and the correlation between body weight and body size.[Method]the data of the body weight and size were measured and analyzed.[Result]The result showed that the body weight and size gradually increased with age while the circumference of cannon bone remained stable.Secondly,short horn cattle have the characteristics of early growth faster.The body weight of both male and female cattle reached their absolute growth peak values during the period ranging from birth to 6 months.The daily weight gains were 1093.30 g and 973.64 g respectively.Additionally,this study indicated that the relative growth curves of male and female cattle were similar and the whole curve displayed a roughly downward trend.Finally,the correlation between body weight and size may link the gender and age of cattle.[Conclusion]Attention should be paid to the early feeding and management of short horn cattle.The nutritional level of short horn cattle should be higher than that of cows.