自然放牧与放牧补饲育肥对肉羊血浆和肌肉中氨基酸组成的影响

发布时间：2018-06-04 11:02

  本文选题：呼伦贝尔羊 + 自然放牧　； 参考：《动物营养学报》2016年07期

【摘要】：本试验研究了呼伦贝尔羊(HL)和呼伦贝尔羊与杜泊羊杂交1代(HZ)羔羊在自然放牧(NG)与放牧补饲(GS)2种不同育肥方式下,其血浆和肌肉组织(背最长肌、臂三头肌、股二头肌)中氨基酸(AA)组成的变化。采用2×2完全随机试验设计,选择体重、体况接近的健康4月龄断奶HL和HZ公羔各60只。因素1为育肥方式,分为NG与GS;因素2为品种,分为HL与HZ。共分为4组,每组30只。进行为期60 d的育肥。结果表明:1)NG组血浆中必需氨基酸(EAA)、限制性氨基酸(LAA)、功能性氨基酸(FAA)和总氨基酸(TAA)含量显著低于GS组(P0.05),呈味氨基酸(DAA)含量有低于GS组趋势(0.05≤P0.10)。2)与GS组相比,NG组背最长肌中粗蛋白质(CP)、LAA含量显著升高(P0.05)。3)与GS组相比,NG组臂三头肌中LAA和DAA含量显著降低(P0.05),EAA含量均有降低的趋势(0.05≤P0.10)。4)NG组股二头肌中CP、EAA、NEAA、TAA、LAA、BCAA、DAA含量显著低于GS组(P0.05)。5)与HL组相比,HZ组血浆EAA,背最长肌LAA,臂三头肌BCAA和股二头肌EAA含量显著(P0.05)或有显著趋势升高(P0.10)。由此可见,GS羔羊肉蛋白质营养价值优于NG,HZ羔羊肉蛋白质营养价值优于HL羔羊。
[Abstract]:In this experiment, the plasma and muscle tissue (longissimus dorsi muscle, triceps arm muscle) of Hulunbeir sheep and HZ-1 crossbred sheep of Hulunbeir sheep were studied under two different fattening methods: natural grazing (NGN) and grazing supplementation with GSN. Changes of amino acid composition in biceps femoris). A 2 脳 2 complete randomized trial design was used to select 60 healthy 4 month weaned HL and 60 HZ male lambs with similar body weight and body condition. Factor 1 is fattening method, it is divided into NG and GS2, factor 2 is variety, HL and HZ. They were divided into 4 groups with 30 rats in each group. Fattening was carried out for 60 days. The results showed that the contents of essential amino acid (EAA), restricted amino acid (LAA), functional amino acid (FAA) and total amino acid (TAA) were significantly lower in group 1 than those in group GS (P 0.05), and the content of taste amino acid (DAA) was lower than that in group GS (0.05 鈮，

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