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首页> 外文会议>Progress in functional amino acids and carbohydrates for animal production >Effects of dietary protein level on intramuscular fat content and its fatty acid composition in lean and obese genotype finishing pigs
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Effects of dietary protein level on intramuscular fat content and its fatty acid composition in lean and obese genotype finishing pigs

机译：日粮蛋白水平对瘦弱和肥胖基因型肥育猪肌内脂肪含量及其脂肪酸组成的影响

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摘要

Effects of dietary protein level on intramuscular fat content and its fatty acid composition in lean and obese genotype finishing pigs were studied. Twenty four Crossbred (Duroc×Landrace×Large White) barrows (49.1±4.9kg of BW) and eighteen Ningxiang barrows (61.6±4.1kg of BW) were equally randomly assigned to two groups and fed diets I (13.89% CP) and diet II (15.33% CP), respectively. The pigs were slaughtered after 46 days. Longissimus dorsi muscle (LD) and semitendinosus muscle (ST) samples were taken and the intramuscular fat (IMF) content as well as its fatty acid compositions was determined. There was no significant difference in IMF content both in LD and ST between breed, within breed or between muscles, when diet I was fed. The percentage of oleic acid (C18:1) and linoleic acid (C18:2) in LD of Crossbred was lower (P<0.01) and higher (P<0.01) significantly than that of Ningxiang, respectively, when diet I was fed. There was no significant difference (P>0.05) in fatty acid compositions in ST between breeds when diet I was fed. When diet II was fed, the IMF amount of LD in Crossbred was significantly lower (P<0.01) than that in Ningxiang and significantly lower (P<0.05) than that of its own ST. Ratio of stearic acid (C18:0), C18:1 and C18:2 in LD of Crossbred was significantly higher (P<0.01), lower (P<0.01) and higher (P<0.01) than that of Ningxiang pig, respectively. Ratio of palmitic acid (C16:0), C18:0, C18:1 and C18:2 in ST of Crossbred was significantly lower (P<0.01), higher (P<0.01), lower (P<0.01) and higher (P<0.01) than that of Ningxiang pig. Ratio of C18:1 in LD of Crossbred was significantly lower (P<0.01) than that of its own ST while ratio of C18:0 and C18:1 in LD of Ningxiang pig was significantly higher (P<0.05) and lower (P<0.05) than that of its own ST, respectively. These results indicate that breed, protein level of diet and muscle types have effects on IMF content and its fatty acid composition and that different muscle types of different breeds responded differently in IMF content and fatty acid composition to the small change in dietary protein level.
机译：研究了日粮蛋白水平对瘦弱和肥胖基因型肥育猪肌肉内脂肪含量及其脂肪酸组成的影响。将24只杂种（Duroc×Landrace×Large White）公猪（49.1±4.9kg BW）和18只宁乡公猪（61.6±4.1kg BW）均等地分为两组，分别饲喂I型（13.89％CP）和饮食II（CP的15.33％）。 46天后将猪宰杀。采集背最长肌（LD）和半腱肌（S​​T）样品，并测定肌内脂肪（IMF）含量及其脂肪酸组成。饲喂日粮I时，不同品种之间，不同品种之间或肌肉之间的LD和ST中IMF含量均无显着差异。饲喂日粮I时，杂种LD中油酸（C18：1）和亚油酸（C18：2）的百分比分别比宁乡低（P <0.01）和高（P <0.01）。饲喂日粮I时，不同品种间ST中脂肪酸组成没有显着差异（P> 0.05）。饲喂日粮II时，杂种中LD的IMF量显着低于（P <0.01）宁乡县，而其LST的IMF量则显着低于（ST）。杂种LD中硬脂酸（C18：0），C18：1和C18：2的比例分别比宁乡猪高（P <0.01），低（P <0.01）和高（P <0.01）。 。杂交ST中棕榈酸（C16：0），C18：0，C18：1和C18：2的比例分别显着降低（P <0.01），更高（P <0.01），更低（P <0.01）和更高（ P <0.01）。杂交种的LD中C18：1的比例显着低于其自身ST的比例（P <0.01），而宁乡猪的LD中C18：0和C18：1的比例显着更高（P <0.05）而更低（P <0.05）。这些结果表明饮食的品种，蛋白质水平和肌肉类型对IMF含量及其脂肪酸组成有影响，并且不同品种的不同肌肉类型对IMF含量和脂肪酸组成的变化对饮食蛋白水平的微小变化有不同的反应。

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  • 来源
  • 会议地点 Guangzhou(CN)
  • 作者

    H.J.Xu; Y.L.Liu; W.T.Gu; Y.L.Yin; X.F.Kong; R.L.Huang; W.J.Tang; Z.Q.Liu;

  • 作者单位

    Key Laboratory for Agro-ecological Processes in Subtropical Region, Institute of SubtropicalAgriculture, the Chinese Academy of Sciences, Changsha, Hunan, China, 410125 Department of chemistry and life science, west Anhui university, Luan, Anhui, 237012;

    Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University,Wuhan 430023;

    Key Laboratory for Agro-ecological Processes in Subtropical Region, Institute of SubtropicalAgriculture, the Chinese Academy of Sciences, Changsha, Hunan, China, 410125;

    Key Laboratory for Agro-ecological Processes in Subtropical Region, Institute of SubtropicalAgriculture, the Chinese Academy of Sciences, Changsha, Hunan, China, 410125 Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic Univers;

    Key Laboratory for Agr;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 饲料;
  • 关键词

    finishing pig; intramuscular fat; fatty acids; protein; genotype;

    机译：肥猪肌内脂肪脂肪酸;蛋白;基因型;

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