植物性蛋白饲料的猪消化能值预测研究

笔者通过实测我国常用植物性蛋白饲料的表观消化能值（ADE）及其酸性洗涤纤维（ADF）、灰分（Ash）、粗纤维（CF）、粗蛋白质（CP）、粗脂肪（EE）、中性洗涤纤维（NDF）、无氮浸出物（NFE）、总能（GE）和可溶性碳水化合物（SCHO）等成分，探讨其相关回归关系，以期综合评定植物性蛋白饲料DE（消化能）效果的优劣，寻找预测DE的最佳模型，并建立准确、实用、专一的预测植物性蛋白饲料的回归方程。

Estimation of Digestible Energy Values of Plant Protein Supplement in Pig

[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 factor to estimate 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,P<0.01); (2) DE (kJ/kg DM) =22 223.26-209.58ADF+26.79SCHO-1.09GE (R2=0.989,RSD=66.9,P<0.01).[Conclusion] The accurate, practical and specific regression equations were established for DE prediction of plant protein supplement in pig.