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草业学报  2015 

饲粮不同蛋白水平对淮猪生长性能、肉品质和血清生化指标的影响

DOI: 10.11686/cyxb2014310, PP. 133-141

Keywords: 蛋白质,生产性能,肉品质,血清生化指标

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Abstract:

本试验旨在研究饲粮粗蛋白水平对淮猪育肥后期生产性能、肉品质和血清生化指标的影响。试验选取48头体重相近的淮猪,公母各半,随机分为3组,即低蛋白组(11.96%)、中蛋白组(13.04%)和高蛋白组(14.16%),每组4个重复,每个重复4头猪,试验期为138d。结果表明,1)各组猪末重、平均日采食量和平均日增重差异不显著(P>0.05),但高蛋白组的料重比显著升高(P<0.05);各组猪屠宰性能无显著影响。2)各组的肌肉pH、肉色评分、失水率以及干物质、粗蛋白、粗灰分和肌苷酸的含量差异不显著(P>0.05),但高蛋白会显著提高肌肉粗脂肪和胆固醇的含量(P<0.05);3)高蛋白组猪肌肉中的亚麻酸含量显著高于低蛋白组(P<0.05),而花生四烯酸含量显著低于其他两组(P<0.05),其他各组之间脂肪酸含量差异不显著。4)低蛋白组的血清中ALB含量显著高于中蛋白组(P<0.05),随着蛋白水平提高,血清中的BUN含量有升高的趋势(P=0.085)。根据本试验结果,饲粮粗蛋白水平为13.04%对淮猪育肥后期生长性能、肉品质和血清生化指标的影响效果最佳。

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