Estimation of Digestible Energy Values of Plant Protein Supplement in Pig
LI Ming-Yuan et al (Bioengineering College,Xihua University,Chengdu,Sichuan 610039)
[Objective] The aim of the study was to establish the effective and accurate formulas for estimating the digestible energy(DE) values of plant protein supplement in pig.[Method] By difference method with different amount of alternative feeds(20%-50%),two 4×4 Latin-square designed trials were taken on eight castrated male pigs(Yorkshire×Landrace×Neijiang pig,initial body-weight:(46±2) kg) to determine the apparent digestible energy(ADE) of the eight kinds of plant protein supplement commonly used in China,that is,corn gluten meal(sol.),soybean meal(sol.),fababean,pea,rapeseed meal(sol.),sesame meal(sol.),rapeseed meal(exp.) and cotton seed meal(sol.).[Result](1) Fiber was the most important predictor in estimating the ADE of plant protein supplement in pigs,and ADF was the best one.(2) The most effective equations were as below: (1) DE(kJ/kg DM)=14 741.86-185.01ADF+54.01SCHO+22.45CP(R2=0.988,RSD=67.9,P0.01);(2) DE(kJ/kg DM) =22 223.26-209.58ADF+26.79SCHO-1.09GE(R2=0.989,RSD=66.9,P0.01).[Conclusion] The accurate,practical and specific regression equations have been established for DE prediction of plant protein supplement in pig.
【CateGory Index】： S828