RESULTS: Dietary CP reduction in corn-SBM diets increased (P < 0.05) the digestibility of Lys (88.5%), Met (90.7%), Thr (77.4%), Cys (80.7%), and Gly (84.7%). Increasing levels of cDDGS linearly decreased (P < 0.05) the digestibility of Asp, Cys, Glu, and Ser, whereas increasing CM level linearly decreased (P < 0.05) the digestibility of Cys, Pro, and Ser. The CP reduction in corn-SBM diets produced downward expression of peptide transporter1 and decreased (P < 0.05) absolute pancreas and ileum weight and length of jejunum and ileum.
CONCLUSIONS: Partial replacement of SBM with alternative protein feedstuffs (cDDGS or CM) in low-CP diets had minimal effects on AA digestibility and mRNA levels of peptides and AA transporters. © 2024 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
结果:玉米-SBM日粮中CP的减少增加(P<0.05)Lys的消化率(88.5%),Met(90.7%),Thr(77.4%),Cys(80.7%),和Gly(84.7%)。增加cDDGS的水平线性降低(P<0.05)Asp的消化率,Cys,Glu,Ser,而增加CM水平线性降低(P<0.05)Cys的消化率,Pro,还有Ser.玉米-SBM日粮中CP的减少导致肽转运蛋白1的表达下降,并降低(P<0.05)胰腺和回肠的绝对重量以及空肠和回肠的长度。
结论:在低CP饮食中,用替代蛋白质饲料(cDDGS或CM)部分替代SBM对AA消化率以及肽和AA转运蛋白的mRNA水平影响最小。©2024作者约翰·威利父子有限公司代表化学工业学会出版的《食品和农业科学杂志》。