西门塔尔牛改良关岭黄牛的效果分析

Improvement Effect of Simmental on Guanling Yellow Catle

2004-2006年对西×关F1杂交牛和关岭黄牛分别测定初生、6月龄、12月龄、18月龄各体尺体重指标，并于2006年对18月龄的西x关F，杂交牛和关岭黄牛进行屠宰测定各指标，同时对肉质进行品偿，结果显示：西×关F1杂交牛体型明显趋于父本，表现出良好的肉用体型，适应性强；挽力和持久力增强；生长发育迅速，屠宰率、净肉率分别比同龄的关岭黄牛提高18．4％、18．59／6，差异极显著（P＜O．01）。肉质细嫩和口感也有所改善。

Body sizes of thirty cows and thirty bulls of F1 crossbred cattle of Simmental and Local Guanling yellow cattle were measured at birth, 6 months old, 12 months old, and 18 months old, respectively, and ten individuals of 18 months old were slaughtered and all slaughter parameters and beef flavor were degusted.. F1 crossbred cattle of Simmental and Local Guanling yellow cattle grew faster than Guanling yellow cattle showed the characteristics of sire breed. Dressing percentage and net meat percentage of F1 crossbred cattle of Simmental andLocal Guanling yellow cattle were higher than those of Local Guanling yellow cattle by 18.4% and 18.5% （P〈0.01）, beef quality was also improved, which indicates that Simmental is a suitable sire breed to improve Local Guanling yellow cattle.