Branched chain amino acids alter fatty acid profile in colostrum of sows fed a high fat diet  

作　　者：Chang Ma Yajng Liu Shaoshuai Liu Crystal L.Lévesque Fengqi Zhao Jindong Yin Bing Dong 

机构地区：[1]State Key Laboratory of Animal Nutrition,College of Animal Science and Technology,China Agricultural University,Beijing 100193,China [2]Department of Animal Science,College of Agriculture and Biological Sciences,South Dakota State University,Brookings,SD 57007,USA [3]Department of Animal and Veterinary Sciences,University of Vermont,Burlington,VT 05405,USA

出　　处：《Journal of Animal Science and Biotechnology》2020年第2期468-479,共12页畜牧与生物技术杂志（英文版）

基　　金：This study is funded by The National Key Research and Development Program of China(2018YFD0500402).

摘　　要：Background:Branched chain amino acids(BCAAs)are important substrates for milk protein synthesis in the mammary gland,and are tightly related to lipid metabolism.No study has been performed examining the role of BCAAs with high fat diets on milk fat synthesis.This study was designed to investigate the effect of dietary BCAAs on growth performance of piglets,progeny body weight,and milk fat composition in sows fed a high fat diet.Four diets(CON=control diet;HF=high fat diet with 8%soybean oil;HF-MB=HF plus 0.39%BCAAs;HF-HB=HF plus 0.78%BCAAs)were fed to sows from late gestation to weaning.Results:Compared to HF,BCAAs(HF-MB and HF-HB)increased the litter weight(P<0.05)and overall litter weight gain(P<0.05)at weaning and increased colostrum fat content by 27.3–35.8%(P<0.01).Fatty acid profiles between the two doses of BCAAs were similar.Compared with HF,HF-MB tended to decrease the percentage of C18:3n3(P=0.063)and increased the percentage of C18:1n9c(P=0.03).In addition,BCAAs in HF-MB increased the concentration of total fatty acid by 22.1%in colostrum(P=0.03)but decreased that in serum at parturition by 53.2%(P=0.027).The fatty acids in colostrum that increased with BCAAs were C15:0,C17:0,C20:3n6,C20:4n6,C20:5n3 and C22:6n3(P=0.00~0.04).Colostrum fatty acids of C20:0,C21:0,C22:0,C16:1,C20:1,C18:1n9c also tended to be increased(0.05<P<0.1)with BCAAs.The change in sow serum fatty acid profile due to BCAAs was different from that in colostrum.Conclusions:BCAAs in high fat diet of sows altered the fatty acid composition in colostrum and enhanced litter growth.Our study indicated that BCAAs supplementation can enhance mammary fatty acid uptake and mammary fat synthesis and that supplemental BCAAs and fat in late gestation and lactation diets for sows can improve reproductive performance.

关 键 词：Dietary lipids Fatty acid composition Milk Odd chain fatty acid PIG Poly unsaturated fatty acid SOW 

分 类 号：S828.5[农业科学—畜牧学]