妊娠后期日粮添加共轭亚油酸对经产母猪初乳脂肪酸组成及IgG含量的影响  

Effects of Dietary Conjugated Linoleic Acid During Late Gestation Period on Fatty Acid Composition and IgG Concentration in Colostrum of Multiparous Sows

作　　者：吴飞[1] 李培丽[1] 李藏兰[1] 赖长华[1] 

机构地区：[1]中国农业大学动物科技学院,北京100193

出　　处：《中国畜牧杂志》2014年第21期32-35,共4页Chinese Journal of Animal Science

基　　金：国家自然科学基金(31172216)

摘　　要：本试验旨在研究经产母猪妊娠后期日粮中添加共轭亚油酸对母猪繁殖性能、初乳脂肪酸组成及初乳中免疫球蛋白G（Ig G）的影响。试验选用3~4胎、平均体重278 kg的长×大杂交母猪16头,随机分为2组,每组8头母猪,母猪单栏饲养,试验期从妊娠第85天到分娩,分别饲喂含3%大豆油（对照组）和2%CLA＋1%大豆油（CLA组）的日粮。结果表明：与对照组相比,日粮添加CLA对母猪窝产仔数、窝产活仔数、初生窝重和初生个体重无显著影响（P〉0.05）;饲喂CLA组日粮的母猪较对照组母猪的初乳中C16：0、C18：0、C22：1 n-9、c9,t11-CLA、t10,c12-CLA和SFA含量显著升高（P〈0.05）,而C18：2 n-6、C18：3 n-3和PUFA含量显著降低（P〈0.05）;相比于对照组,CLA显著提高了初乳中Ig G的含量（P〈0.05）。由此可见,妊娠后期日粮中添加的共轭亚油酸可经日粮传递到初乳中,同时影响初乳中脂肪酸的组成,提高Ig G的含量。This experiment was conducted to investigate the effects of dietary conj ugated linoleic acid on reproductive performance and colostral immunoglobulin concentration of multiparous sows. Sixteen Landrace × Large White multiparous sows（3 or 4 parities）, with average BW 278 kg, were selected and randomly assigned into two treatments including the control diet with 3% soybean oil（n =8）, and 2% CLA ＋ 1% soybean oil（n =8）. The results showed that：compared with the control group, dietary CLA supplementation did not alter the litter size, the number of piglets born alive, the litter birth weight of all piglets born alive and birth weight of piglet born alive（ P〈0.05）. The concentration of colostral C16： 0, C18： 0, C22： 1 n-9, c9, t11-CLA, t10, c12-CLA and SFA of the sows fed with dietary CLA were significantly higher than those of the control group（ P〈0.05）, while the concentration of colostral C18： 2 n-6, C18： 3n-3 and PUFA were significantly lower（P〈0.05）. The IgG concentration in colostrum of sows were significantly higher in CLA group（P〈0.05）. It is concluded that CLA could transferred into the colostrum from the diet, alter the fatty acid composition and increased the IgG concentration.

关 键 词：共轭亚油酸 初乳 脂肪酸组成 免疫球蛋白G 经产母猪 

分 类 号：S828.5[农业科学—畜牧学]