【摘要】 本试验选择西门塔尔、黑白花、夏洛来3品种牛冻配改良河西本地黄牛，所得5个杂交组合，进行了西本F1、西西本、黑西本、西本F3、夏黑西本阁、母牛役用性能的测定。试验结果表明：河西地区黄牛向乳肉方向转化的同时，其冻配改良后代都兼顾了一定的役用性能，并且，其杂文改良的一、二代牛的役用性能较本地黄牛有所提高，完全可承担农户耕作使役。更多还原

【Abstract】 The work performance of steers and cows for 5 crossing combination in cluding F1 of S × He, S × S × He, H × S × He. F3 of S ×He and C × H × S × He was analysed. Expriment result showed that crossbred offspring had a good work performance when improving yellow cattle in Hexi area into the milk and meat producing animals, and F1 and F2 individuals, which had the better work performance than local yellow cattle, can completely meet the demands of tillage in rural area.更多还原