西门塔尔牛与华西牛生长发育和血液理化指标比较分析

Comparative Analysis of Growth,Development and Blood Physicochemical Indexes between Simmental Cattle and Huaxi Cattle

该试验选择西门塔尔牛母牛12头、西门塔尔牛种公牛10头和华西牛6头,共计28头,通过测定种公牛初生、断奶、6月龄、12月龄、18月龄、24月龄和36月龄的体高、十字部高、体斜长、胸围和体重等生长发育数据,和测定成年牛白细胞(计数)、淋巴细胞比率、中间细胞比率等25项血常规指标。结果表明:华西牛6月龄体重显著高于西门塔尔牛(P<0.05),但18月龄时华西牛体重显著低于西门塔尔牛(P<0.05)。体高和十字部高在华西牛和西门塔尔牛不同生长阶段差异不显著(P>0.05)。西门塔尔牛初生时体斜长显著高于华西牛(P<0.05)。西门塔尔牛出生、断奶、12月龄、18月龄、24月龄胸围显著高于华西牛(P<0.05)。西门塔尔牛红细胞平均血红蛋白浓度低于华西牛种公牛(P=0.49),其他指标二者之间差异不显著(P>0.05)。可见,不同品种间种公牛在部分生长发育性状存在差异,品种内公母间的血常规指标差异显著。

In this test,12 Simmental cattle,10 Simmental cattle breeding bulls,and 6 Huaxi cattle were selected,totaling 28.The growth and development data such as body height,cruciate height,body oblique length,chest circumference,and body weight of breeding bulls at birth,weaning,6 months,12 months,18 months,24 months,and 36 months,and 25 blood routine indicators such as adult cattle white blood cells(count),lymphocyte ratio,and intermediate cell ratio were measured.The results showed that the weight of Huaxi cattle at 6 months was significantly higher than that of Simmental cattle(P<0.05),but the weight of Huaxi cattle at 18 months was significantly lower than that of Simmental cattle(P<0.05).There were no significant differences in body height and cruciate height between Huaxi cattle and Simmental cattle at different growth stages(P>0.05).Simmental cattle were significantly higher than Huaxi cattle at birth(P<0.05).The chest circumference of Simmental cattle at birth,weaning,12 months,18 months,and 24 months was significantly higher than that of Huaxi cattle(P<0.05).The average hemoglobin concentration of red blood cells in Simmental cattle was lower than that in West China cattle breeds(P=0.49),and there was no significant difference between the two in other indicators(P>0.05).It can be seen that there are differences in some growth and development traits between different breeds,and there are significant differences in blood routine indicators between males and females within breeds.