Standardized ileal digestibility of amino acids in soybean meal fed to non-pregnant and pregnant sows  

作　　者：Ke Wang Ya Wang Lei Guo Yong Zhuo Lun Hua Lianqiang Che Shengyu Xu Ruinan Zhang Jian Li Bin Feng Zhengfeng Fang Xuemei Jiang Yan Lin De Wu 

机构地区：[1]Institute of Animal Nutrition,Key Laboratory for Animal Disease‑Resistance Nutrition of China,Ministry of Education,Sichuan Agricultural University,211 Huimin Road,Wenjiang District,Chengdu 611130,Sichuan,China

出　　处：《Journal of Animal Science and Biotechnology》2024年第1期362-373,共12页畜牧与生物技术杂志（英文版）

基　　金：funded by the National Key R&D Program of China(No.2021YFD1300202)the nutritional value evaluation and parameter establishment of protein feedstuffs for sows;the Ministry of Agriculture and Rural Affairs of the People’s Republic of China(125D0203-16190295);the Major Scientific and Technological Special Project of Sichuan Province(No.2021ZDZX0009)。

摘　　要：Background Two studies were designed to determine standard ileal crude protein(CP)and amino acid(AA)digestibility of soybean meal(SBM)from different origins fed to non-pregnant and pregnant sows.Seven solvent-extracted SBMs from soybeans produced in the USA,Brazil,and China were selected.In Exp.1,eight different diets were created:a nitrogen(N)-free diet and 7 experimental diets containing SBM from different origins as the only N source.Eight non-pregnant,multiparous sows were arranged in an 8×8 Latin square design(8 periods and 8 diets).In Exp.2,the diet formula was the same as in Exp.1.Eight gestating sows(parity 3)were assigned to 4 different diets in a replicated 4×3 Youden square design(three periods and four diets)in mid-gestation and again in late-gestation stages.Results When fed to non-pregnant and late-gestating sows,the standardized ileal digestibility(SID)of CP and most AAs from different SBM were not significantly different(P>0.05).When fed to mid-gestating sows,the SID values for Arg,His,Lys,Phe,Cys,Gly,Ser,and Tyr in SBM 1 were lower than in SBM 4 and 5(P<0.05),whereas SID for Leu from SBM 5 was higher than in SBM 1 and 4(P<0.05).SID values for Ile,Ala,and Asp from SBM 4 were lower than in SBM 1 and 5(P<0.05).Sows had significantly greater SID values for Lys,Ala,and Asp during mid-gestation when compared with late-gestation stages(P<0.05).Mid-gestating sows had greater SID value for Val and lower SID value for Tyr when compared with non-pregnant and late-gestating sows(P<0.01),whereas non-pregnant sows had significantly greater SID value for Met when compared with gestating sows(P<0.01).Conclusions When fed to mid-gestating sows,the SID values for most AAs varied among SBM samples.The SID values for Lys,Met,Val,Ala,Asp,and Tyr in SBM were affected by sow gestation stages.Our findings provide a cornerstone for accurate SBM use in sow diets.

关 键 词：Amino acids SOWS Soybean meal Standardized ileal digestibility 

分 类 号：S828.5[农业科学—畜牧学]