从胚胎期到育肥期饲粮添加共轭亚油酸对猪肉品质、脏器指数及脂肪酸组成的影响

发布时间：2018-04-17 19:35

本文选题：共轭亚油酸 + 猪　；参考：《中国畜牧杂志》2017年02期

【摘要】：试验旨在研究从胚胎期到育肥期饲粮添加1.5%共轭亚油酸(CLA),对猪肉品质、脏器指数和脂肪酸组成的影响。选用妊娠荣昌母猪12头,随机分为对照组和试验组,试验组母猪饲喂1.5%CLA,断奶后试验组仔猪继续饲喂含1.5%CLA的饲粮,直至240日龄。结果表明:饲粮中持续添加1.5%CLA能显著提高仔猪的断奶重,显著提高育肥猪眼肌面积、肌内脂肪和肉色评分(P0.05),极显著提高了屠宰重、肌肉p H24h和大理石纹评分(P0.01),极显著降低了肉色黄度值(P0.01);对脏器指数的影响均不显著(P0.05);极显著提高了肌肉饱和脂肪酸(SFA)含量(P0.01),降低了不饱和脂肪酸(UFA)含量(P0.01)。其中,试验组SFA中的C12:0、C14:0、C16:0、C20:0以及UFA中的C14:1和C16:1含量极显著增加(P0.01),UFA中的C18:1n-9c和C18:3n-3含量极显著降低(P0.01)。以上结果说明,饲粮持续添加CLA有利于仔猪生长,并明显改善育成期猪肉品质和改变猪肉中脂肪酸组成。
[Abstract]:The purpose of the experiment was to study the effects of 1.5% conjugated linoleic acid on pork quality, organ index and fatty acid composition in diet from embryonic stage to fattening stage.Twelve pregnant Rongchang sows were randomly divided into two groups: the control group and the experimental group. The sows in the experimental group were fed 1.5 cLA.After weaning, the piglets in the experimental group continued to be fed diets containing 1.5%CLA until 240 days of age.The results showed that continuous supplementation of 1.5%CLA in diet could significantly increase weaning weight, eye muscle area, intramuscular fat and meat color score (P0.05), and significantly increase slaughter weight of piglets.Muscle pH 24 h and marbling score P0.01g significantly decreased the color yellowness of meat (P0.01A), but had no significant effect on viscera index (P0.05A), and significantly increased the content of muscle saturated fatty acids (SFAs) and decreased the content of unsaturated fatty acids (UFAs) (P0.01).Among them, the contents of C12: 0, C14: 0, C16: 0, C20: 0 in SFA and C14: 1 and C16: 1 in UFA significantly increased the contents of C18:1n-9c and C18:3n-3 in P0.01UFA.The above results showed that the continuous dietary addition of CLA was beneficial to the growth of piglets, and significantly improved the quality of pork and changed the fatty acid composition of the piglets.
【作者单位】：重庆市畜牧科学院;农业部养猪科学重点实验室养猪科学重庆市市级重点实验室;
【基金】：国家“973”计划项目(2012CB124702) 国家自然科学基金项目(31302055) 重庆市农发资金项目(15430)
【分类号】：S828.5

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