本文選題：呼倫貝爾羊 + 自然放牧��； 參考：《動物營養(yǎng)學報》2016年07期

【摘要】：本試驗研究了呼倫貝爾羊(HL)和呼倫貝爾羊與杜泊羊雜交1代(HZ)羔羊在自然放牧(NG)與放牧補飼(GS)2種不同育肥方式下,其血漿和肌肉組織(背最長肌、臂三頭肌、股二頭肌)中氨基酸(AA)組成的變化。采用2×2完全隨機試驗設計,選擇體重、體況接近的健康4月齡斷奶HL和HZ公羔各60只。因素1為育肥方式,分為NG與GS;因素2為品種,分為HL與HZ。共分為4組,每組30只。進行為期60 d的育肥。結(jié)果表明:1)NG組血漿中必需氨基酸(EAA)、限制性氨基酸(LAA)、功能性氨基酸(FAA)和總氨基酸(TAA)含量顯著低于GS組(P0.05),呈味氨基酸(DAA)含量有低于GS組趨勢(0.05≤P0.10)。2)與GS組相比,NG組背最長肌中粗蛋白質(zhì)(CP)、LAA含量顯著升高(P0.05)。3)與GS組相比,NG組臂三頭肌中LAA和DAA含量顯著降低(P0.05),EAA含量均有降低的趨勢(0.05≤P0.10)。4)NG組股二頭肌中CP、EAA、NEAA、TAA、LAA、BCAA、DAA含量顯著低于GS組(P0.05)。5)與HL組相比,HZ組血漿EAA,背最長肌LAA,臂三頭肌BCAA和股二頭肌EAA含量顯著(P0.05)或有顯著趨勢升高(P0.10)。由此可見,GS羔羊肉蛋白質(zhì)營養(yǎng)價值優(yōu)于NG,HZ羔羊肉蛋白質(zhì)營養(yǎng)價值優(yōu)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，

本文編號：1977122