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母猪限饲对后代断奶仔猪肌纤维特性的影响

DOI: 10.7685/j.issn.1000-2030.2011.01.019, PP. 101-106

Keywords: 母猪蛋白限饲,肌纤维类型,糖原,乳酸脱氢酶,琥珀酸脱氢酶

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Abstract:

选用16头配种日期、系谱、体重和日龄等相近的纯种小梅山初产母猪,采用单因子试验设计,根据在整个妊娠期和哺乳期饲喂不同蛋白水平的日粮(正常水平和限饲水平,限饲蛋白水平为正常蛋白水平的50%),将16头母猪随机分为2组限饲组和对照组,比较了2组母猪后代断奶仔猪背最长肌的肌纤维类型及面积、肌糖原含量、乳酸脱氢酶活性以及琥珀酸脱氢酶活性。结果显示限饲后仔猪Ⅰ型、ⅡA和ⅡB型肌纤维面积均低于对照组,但差异不显著(P>0.05);限饲后仔猪Ⅰ型和ⅡA型肌纤维比例升高,但ⅡB型肌纤维比例降低,差异均不显著(P>0.05)。限饲后仔猪背最长肌中糖原含量显著高于对照组(P0.05)。限饲后仔猪琥珀酸脱氢酶活性显著低于对照组(P<0.05)。试验结果表明母猪妊娠期和哺乳期蛋白限饲对后代断奶仔猪肌纤维结构未见显著影响,但降低肌肉有氧氧化能力,对肌肉代谢特性产生不利影响。

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