杜泊羊和巴彦淖尔多胎羊杂交后代肉品质分析研究

为了评价杜泊羊与巴彦淖尔多胎羊杂交后代的肉品质,以杜泊羊×巴彦淖尔多胎羊杂交F₁代羔羊和新疆维吾尔自治区库尔勒市当地绵羊羔羊为研究对象,采用常规方法测定2种羔羊肌肉组织的理化指标、营养成分含量以及矿物质含量,利用统计学方法比较二者相关指标的差异。结果表明,杜泊羊×巴彦淖尔多胎羊杂交F₁代羔羊肌肉组织的pH_{45 min}值和熟肉率显著高于当地绵羊羔羊（P<0.05）,剪切力和失水率显著低于当地绵羊羔羊（P<0.05）;杂交F₁代羔羊肌肉中的粗灰分含量显著低于当地绵羊羔羊（P<0.05）,粗蛋白和粗脂肪含量均显著高于当地绵羊羔羊（P<0.05）;杂交F₁代羔羊肌肉中的铁含量极显著高于当地绵羊羔羊（P<0.01）,且铜、锰、镁、钙、锌含量均显著高于当地绵羊羔羊（P<0.05）。综上表明,杜泊羊×巴彦淖尔多胎羊杂交F₁代羔羊的肉品质优于当地绵羊羔羊。

Evaluation of Meat Quality of Hybrid Offspring of Dorper Sheep and Bayannur Prolific Sheep

The aim of this study was to evaluate the meat quality of the hybrids of Dorper sheep and Bayannur prolific sheep. The F₁ crossbred lambs of Dorper sheep × Bayannur prolific sheep as well as the local sheep lambs in Korla of Xinjiang were selected. The physical and chemical indicators, nutritional components content and mineral content of the muscle tissues of the lambs were determined by routine methods, and the differences between the varieties of lambs were statistically compared. The results showed that the pH_{45 min} value and cooked meat percentage of the muscle samples from the F₁ crossbred lambs of Dorper sheep and Bayannur prolific sheep were significantly higher than that of the local sheep lambs （P<0.05）, and the shear force and water loss rate were significantly lower than that of the local sheep lambs （P<0.05）; the F₁ crossbred lambs had significantly lower crude ash content （P<0.05） but significantly higher crude protein and crude fat content （P<0.05） in muscle samples compared to the local sheep lambs; extremely significantly higher iron content （P<0.01） and significantly higher content of copper, manganese, magnesium, calcium and zinc （P<0.05） was observed in muscle samples from F₁ crossbred lambs compared to the local sheep lambs. The combined data suggest that the F₁ crossbred lambs of Dorper sheep and Bayannur prolific sheep performed better in meat quality than the local sheep lambs.