Estimate of the energy value of soybean meal relative to corn based on growth performance of nursery pigs  

作　　者：Henrique S.Cemin Hayden E.Williams Mike D.Tokach Steve S.Dritz Jason C.Woodworth Joel M.DeRouchey Robert D.Goodband Kyle F.Coble Brittany A.Carrender Mandy J.Gerhart 

机构地区：[1]Department of Animal Sciences and Industry,College of Agriculture,Kansas State University,Manhattan,KS 66506,USA [2]Department of Diagnostic Medicine/Pathobiology,College of Veterinary Medicine,Kansas State University,Manhattan,KS 66506,USA [3]JBS USA,Greeley,CO 80634,USA

出　　处：《Journal of Animal Science and Biotechnology》2020年第3期912-919,共8页畜牧与生物技术杂志（英文版）

基　　金：Financial support for this research from United Soybean Board,Chesterfield,MO,USA.

摘　　要：Background:Two experiments were conducted to determine the effects of increasing amounts of soybean meal(SBM)in swine diets and estimate the energy value of SBM.Methods:A total of 2233 pigs(PIC 337×1050,Hendersonville,TN)and 3796 pigs(PIC 359×C40),initially 11.0 kg and 17.6 kg body weight(BW),were used in Exp.1 and 2,respectively.In Exp.1,pigs were placed in 92 pens each containing 20 to 27 pigs.In Exp.2,pigs were placed in 84 pens each containing 37 to 43 pigs.Treatments were assigned in a randomized complete block design with BW as the blocking factor.Dietary treatments consisted of 21%,27%,33%,or 39%SBM in Exp.1 and 17.5%,22%,26.5%,31%,35.5%,or 40%SBM in Exp.2,obtained by changing the inclusion rate of feed-grade amino acids and corn grain.For Exp.1,representative samples of corn grain,SBM,and distillers dried grains with solubles were analyzed for total AA content prior to diet formulation.For Exp.2,diets were formulated using NRC(2012)nutrient loadings.Treatment diets were fed for 21 and 22 d(Exp.1 and 2)and there were 23 replicates in Exp.1 and 14 replicates in Exp.2.Pigs were weighed and feed disappearance measured weekly to calculate average daily gain(ADG),average daily feed intake(ADFI),gain-to-feed ratio(G:F),and caloric efficiency(CE).Data were analyzed with block as a random effect and treatment as a fixed effect,and contrasts were constructed to test the linear and quadratic effects of increasing SBM.Results:In Exp.1,there was a tendency(linear,P=0.092)for a decrease in ADFI as SBM increased.There was a tendency(P=0.090)for a quadratic response for ADG,with a decrease in ADG observed with 39%SBM inclusion.Pigs fed diets with increasing SBM had a tendency(quadratic,P=0.069)for an increase in G:F up to 33%SBM and an improvement(linear,P=0.001;quadratic,P=0.063)in CE with increasing SBM.Using CE to estimate the energy of SBM relative to corn,a value of 105.4%of corn energy or 2816 kcal/kg NE was determined using all data points.When removing the CE value of the 39%SBM treatment due to the quadratic t

关 键 词：Caloric efficiency Energy Soybean meal SWINE 

分 类 号：S828.5[农业科学—畜牧学]