不同精粗比全混合日粮对育肥羔羊屠宰性能及肉品质的影响

以南非肉用美利奴羊为父本,东北细毛羊为母本进行杂交,选取出生日期相近的4月龄断奶公羔F1代12只,随机分成A组和B组,每组6只,A组和B组分别饲喂精粗比6∶4和8∶2饲粮,研究不同饲粮对杂交一代羔羊屠宰性能及肉品质性状的影响。结果表明,B组宰前活重、胴体重、净肉重、骨重和板油重显著提高(P0.05);A组的失水率显著高于B组(P0.05);在羊肉的营养成分中,羊肉的干物质含量A组显著低于B组(P0.05),粗蛋白B组极显著高于A组(P0.01);粗脂肪A组极显著高于B组(P0.01);脂肪酸含量方面,不饱和脂肪酸亚油酸、亚麻酸和油酸的含量B组极显著高于A组(P0.01),饱和脂肪酸硬脂酸和棕榈酸的含量B组极显著低于A组(P0.01),从食品营养学的角度来讲,B组羊肉对人体有利。

Effects of Different Diet Combinations on Slaughter Performance and Meat Quality of Crossbred F1 from South Africa Mutton Merino × Northeast Fine Wool Sheep

Slaughter performance and meat quality of crossbred F1 from South Africa Mutton Merino × Northeast Fine Wool Sheep were studied in the paper.12 weaned lambs were divided into two groups,A and B group,which were grazed with forage to concentrate ratio of 6:4 and 8:2 individually.The results indicated that preslaughter weight,carcass weight,lean meat weight,bone weight and leaf fat weight of B group were higher than A group(P<0.05).Compared with B group,the water loss percentage of A group was increased significantly(P<0.05).Evaluation of routine meat quality analysis showed that dry matter content of A group was significantly lower than B group(P<0.05).Crude protein content of B group was markedly higher than A group(P<0.01).Crude fat content of A group was markedly higher than B group(P<0.01).Unsaturated fatty acids content of B group,including linoleic acid,linolenic acid and oleic acid,were markedly higher than A group(P<0.01).Saturated fatty acids content of A group,including stearic acid and palmitic acid,were markedly higher than B group(P<0.01).In general,lamb meat from B group is good for man.