Effects of replacing soybean meal with enzymolysis-fermentation compound protein feed on growth performance,apparent digestibility of nutrients,carcass traits,and meat quality in growing-finishing pig  

作　　者：Yu Cheng Jun He Ping Zheng Jie Yu Junning Pu Zhiqing Huang Xiangbing Mao Yuheng Luo Junqiu Luo Hui Yan Aimin Wu Bing Yu Daiwen Chen 

机构地区：[1]Key Laboratory of Animal Disease‑Resistant Nutrition,Ministry of Education,Animal Nutrition Institute,Sichuan Agricultural University,Ya’an 625014,People’s Republic of China

出　　处：《Journal of Animal Science and Biotechnology》2024年第6期2656-2668,共13页畜牧与生物技术杂志(英文版)

基　　金：supported by the Major Science and Technology Program of Sichuan Province(No.2021ZDZX0009);Key Research and Development Program of Sichuan Province(No.2020YFN0147)。

摘　　要：Background Addressing the shortage of high-quality protein resources,this study was conducted to investigate the effects of replacing soybean meal(SBM)with different levels of enzymolysis-fe rmentation compound protein feed(EFCP)in the diets of growing—finishing pigs,focusing on growth perfo rmance,nutrients digestibility;carcass traits,and meat quality.Methods Sixty DLY(Durdcx LandracexYorkshire)pigs with an initial body weight of 42.76±2.05 kg were assigto 5 diietary treatments in a 2×2+1 factorial design.These dietary treatments included a corn-soybean meal diet(CON),untreated compound protein feed(UCP)substitution 50%(U50)and 100%SBM(U100)diets,and EFCP substitution 50%(EF50)and 100%SBM(EF100)diets.Each treatment had 6 pens(replicates)with 2 pigs per pen,and the experiment lasted 58 d,divided into phaseⅠ(1-28 d)and phaseⅡ(29-58 d).Following phaseⅠ,only the CON,U50,and EF50 groups were continued for phaseⅡ,each with 5 replicate pens.On d 59,a total of 15 pigs(1 pig/pen,5pens/treatment)were euthanized.Results During phaseⅠ,the EF50 group had a higher average daily gain(ADG)in pigs(P<0.05)compared to the CON group,whereas the U50 group did not have a significant difference.As the substitution ratio of UCP and EFCP increased in phaseⅠ,there was a noticeable reduction in the final body weight and ADG(P<0.05),along with an increase in the feed-to-gain ratio(F/G)(P<0.05).In phaseⅡ,there were no significant differences in growth performance among the treatment groups,but EF50 increased the apparent digestibility of several nutrients(including dry matter,crude protein,crude fiber,acid detergent fiber,ash,gross energy)compared to U50.The EF50 group also exhibited significantly higher serum levels of neuropeptide Y and ghrelin compared to the CON and U50 groups(P<0.05),Moreover,the EF50 group had higher carcass weight and carcass length than those in the CON and U50groups(P<0.05),with no significant difference in meat quality.Conclusions The study findings suggest that replacing 50%SBM with EFCP during

关 键 词：Compound protein feed Enzymolysis-fermentation Growing-finishing pigs Growth performance Nutrient digestibility 

分 类 号：S828.5[农业科学—畜牧学]