动物营养学报2023，Vol.35Issue(12)：7680-7690,11.DOI:10.12418/CJAN2023.698
小麦麸生长猪消化能和代谢能的测定及预测模型的建立
Determination and Prediction Model Establishment of Digestible Energy and Metabolizable Energy of Wheat Bran for Growing Pigs
摘要
Abstract
The experiment was performed to detect the chemical components in wheat bran,the digestible ener-gy(DE)and metabolizable energy(ME)of wheat bran for growing pigs,and the prediction models of DE and ME for growing pigs was established based on the contents of effective chemical components in wheat bran.Twenty-two healthy"Duroc×Landrance×Yorkshire"crossbred boars with average initial body weight of(35±3)kg were selected for digestive and metabolic experiment according to a replicated 11×3 incomplete Latin square design,including two parallel trials,11 diets(1 basal diet+10 wheat bran diets)and 3 cycles.Each cycle had 12 days consisting of 7 d for adaptation and 5 d for fecal and urine collection.The results showed that,on the air-dry basis,the average gross energy(GE)of 10 wheat brans was 16.59 MJ/kg(16.22 to 16.79 MJ/kg),and the average contents of dry matter(DM),crude protein(CP),crude ash(Ash),e-ther extract(EE),calcium(Ca),total phosphorus(TP),crude fiber(CF),neutral detergent fiber(NDF),acid detergent fiber(ADF)and total starch(TS)of 10 wheat brans were 87.46％(86.07％to 87.82％),15.88％(14.56％to 16.83％),5.48％(5.03％to 6.02％),4.37％(3.30％to 5.69％),0.11％(0.08％to 0.14％),1.04％(0.94％to 1.15％),10.72％(8.70％to 12.79％),44.24％(38.15％to 49.73％),10.76％(8.05％to 12.27％)and 19.19％(16.14％to 22.73％),respectively.The coefficients of variation(CV)of EE,Ca,CF and ADF contents were greater than 10％,while the CV of GE,DM,CP,Ash,TP,NDF and TS contents were less than 10％.The average DE and ME of 10 wheat brans for growing pigs were 10.61(10.18 to 10.97 MJ/kg)and 9.99 MJ/kg(9.47 to 10.48 MJ/kg),respectively.The optimal prediction models of DE and ME of wheat bran for growing pigs were DE=9.569+0.237EE[relative standard deviation(RSD)=0.19,determination coefficient(R2)=0.498,P＜0.05]and ME=8.779+0.278EE(RSD=0.15,R2=0.719,P＜0.01),respectively.In conclusion,the variation degree of chemical component contents of wheat bran is small on the whole,and EE content can be used as key predictor of DE and ME of wheat bran for growing pigs.[Chinese Journal of Animal Nutrition,2023,35(12):7680-7690]关键词
小麦麸/生长猪/消化能/代谢能/预测方程Key words
wheat bran/growing pigs/digestive energy/metabolizable energy/prediction equation分类
农业科技引用本文复制引用
蒋线吉,龙次民,黄瑞林,印遇龙,李瑞,冯淦熠,田明洲,向强,杨刚,刘小杰,欧阳晴,唐辉..小麦麸生长猪消化能和代谢能的测定及预测模型的建立[J].动物营养学报,2023,35(12):7680-7690,11.基金项目
国家重点研发计划(2021YFD1300201,2021YFD1301004) （2021YFD1300201,2021YFD1301004）
云南省重大科技专项计划(202202AE090032) （202202AE090032）
湖南省自然科学基金项目(2022JJ40532) （2022JJ40532）
