应用灰色系统理论综合评估外来牛改良本地牛生长性能的研究

Comprehensive Estimation of the Growth Performance of Crossbred Beef Cattle Using Grey Systematic Theory

[目的]科学便捷地评价外来牛改良本地牛生长性能效果,为科学的引种改良提供依据。[方法]本文应用灰色系统理论分别对相同生长条件下的12月龄德南F1、皮南F1、夏南F1、利南F1的体高、体长、胸围、管围、体重5项指标进行分析,建立综合评估模型,并对其生长性能进行了综合评估。[结果]夏南F1、德南F1得分最高,综合生长性能最好。[结论]德国黄牛和夏洛来牛改良南阳本地牛效果最好,适宜在本土推广。

To evaluation the improving effects of foreign cattle breeds on local cattle, the wither height, body length, heart girth, circumference of cannon bone and body weight of Crossbred F1 of Germany Yellow and Nanyang cattle, F1 of Piedmontese and Nanyang cattle, F1 of Charolais and Nanyang cattie and F1 of Limousin and Nanyang cattle were used to set up a comprehensive model with grey systematic theory. It was showed that the scores of F1 of Germany Yellow and Charolais and Nanyang cattle were the height and the improving effects of Germany Yellow and Charolaris were the best. These two cattle variety are suitable extension in Nanyang.