猪与禽营养 Swine and poultry nutrition

饲粮必需脂肪酸组成对育肥猪生长性能和血清生化指标的影响

  • 陈静 ,
  • 刘显军 ,
  • 王彤 ,
  • 李建涛 ,
  • 何洋 ,
  • 杨营 ,
  • 李海东 ,
  • 程奇
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  • 1. 沈阳农业大学畜牧兽医学院, 沈阳 110866;
    2. 沈阳博睿农牧科技有限公司, 新民 110300
陈静(1975-),女,辽宁北票人,讲师,博士,从事动物营养及肉品质调控研究。E-mail:chenjinglxj@163.com

收稿日期: 2019-01-26

  网络出版日期: 2019-08-19

基金资助

辽宁省高等学校基本科研项目(LSNZD201703,LSNFW201701);辽宁省科技厅重大项目(2015103034)

Effects of Dietary Essential Fatty Acid Composition on Growth Performance and Serum Biochemical Indices of Finishing Pigs

  • CHEN Jing ,
  • LIU Xianjun ,
  • WANG Tong ,
  • LI Jiantao ,
  • HE Yang ,
  • YANG Ying ,
  • LI Haidong ,
  • CHENG Qi
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  • 1. College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China;
    2. Shenyang Wisediligence Agri-Tech. Co., Ltd., Xinmin 110300, China

Received date: 2019-01-26

  Online published: 2019-08-19

摘要

本试验旨在研究饲粮中不同亚油酸/α-亚麻酸(LA/ALA)对肥育猪生长性能和血清生化指标的影响。选取70 kg左右的杜×长×大肥育猪90头,随机分为6个组,每个组设5个重复,每个重复3头。用亚麻籽油等重量替代不同水平的玉米油,使6个组饲粮LA/ALA分别为32∶1、22∶1、13∶1、9∶1、6∶1和3∶1。结果表明:1)随着饲粮LA/ALA降低,育肥猪平均日增重(ADG)和平均日采食量(ADFI)呈先上升后下降的趋势(P<0.05),分别在13∶1和9∶1组有最大值,而料重比(F/G)在6∶1组最小,显著低于其他各组(P<0.05)。2)饲粮LA/ALA为3∶1显著降低了血清甘油三酯(TG)含量(P<0.05),且高密度脂蛋白-胆固醇/低密度脂蛋白-胆固醇(HDL-C/LDL-C)随着LA/ALA降低而提高(P<0.05),各组间血清总胆固醇(TC)、HDL-C和LDL-C含量差异不显著(P>0.05)。3)随着饲粮LA/ALA降低,血清免疫球蛋白M(IgM)含量显著升高(P<0.05),血清溶菌酶活性在13∶1组最高,且显著高于32∶1、6∶1和3∶1组(P<0.05),而血清白细胞介素-2(IL-2)和白细胞介素-6(IL-6)含量各组间差异不显著(P>0.05)。由此可见,降低饲粮LA/ALA可不同程度地改善育肥猪的生长性能、脂质代谢和免疫功能。

本文引用格式

陈静 , 刘显军 , 王彤 , 李建涛 , 何洋 , 杨营 , 李海东 , 程奇 . 饲粮必需脂肪酸组成对育肥猪生长性能和血清生化指标的影响[J]. 动物营养学报, 2019 , 31(8) : 3543 -3550 . DOI: 10.3969/j.issn.1006-267x.2019.08.015

Abstract

This experiment studied the effects of dietary linoleic acid to α-linolenic acid ratio (LA/ALA) on growth performance and serum biochemical indices of finishing pig. Ninety Duroc×Landrace×Yorkshire crossbred finishing pigs with an average initial body weight of around 70 kg were divided randomly into 6 groups of 15 pigs (5 replicates in each group, 3 pigs per replicate). Dietary LA/ALA of 32:1, 22:1, 13:1, 9:1, 6:1 and 3:1 were obtained by replacing corm oil with the same amount of linseed oil, respectively. The results showed as follows:1) with the decreasing of dietary LA/ALA, average daily gain (ADG) and average daily feed intake (ADFI) of finishing pigs increased first and then decreased (P<0.05), and 13:1 and 9:1 groups were the highest,respectively; while feed/gain was the lowest in 6:1 group, and significantly lower than that in other groups (P<0.05). 2) The dietary LA/ALA of 3:1 significantly increased serum triglyceride content (P<0.05) and high density lipoprotein cholesterol (HDL-C)/low density lipoprotein cholesterol (LDL-C) increased with the decreasing of dietary LA/ALA (P<0.05). Serum total cholesterol, HDL-C and LDL-C contents had no significant difference among groups (P>0.05). 3) Serum immuneglobulin M content significantly increased with the decreasing of dietary LA/ALA (P<0.05). Serum lysozyme activity was the highest in 13:1 group, and significantly higher than that in 32:1, 6:1 and 3:1 groups (P<0.05). Serum interleukin (IL)-2 and IL-6 contents had no significant difference among groups (P>0.05). In conclusion, reducing dietary LA/ALA can improve growth performance, lipid metabolism and immune function of finishing pigs to a certain extent.

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