摘要
本试验旨在通过研究菜籽饼粕各化学成分及其对生长猪消化能(DE)及能量消化率(DCE)的影响,分析用菜籽饼粕化学成分预测其DE及DCE的可行性,建立菜籽饼粕饲料DE与DCE预测模型。试验选用平均体重(46.37±1.53)kg、健康状况良好的"杜×长×大"三元杂交去势公猪12头,采用3个4×4拉丁方设计,并运用全收粪法与套算法相结合测定9种菜籽饼粕饲料DE与DCE,通过分析饲料原料中粗蛋白质(CP)、粗纤维(CF)、酸性洗涤纤维(ADF)、中性洗涤纤维(NDF)、粗脂肪(EE)、酸性洗涤木质素(ADL)、蛋白质溶解度(PS)、粗灰分(Ash)、总能(GE)与DE及DCE之间的相关关系,筛选出最佳预测因子并建立预测方程。结果表明,NDF为DCE最佳预测因子,ADF和NDF为DE的最佳预测因子。推荐DE预测模型为:DE=16.20-0.10 NDF(R2=0.63,RSD=0.49,P<0.05),DE=16.32-0.15 ADF(R2=0.63,RSD=0.49,P<0.05)。推荐DCE预测模型为:DCE=97.27-0.87 NDF(R2=0.93,RSD=1.55,P<0.01),DCE=86.6-0.67 NDF+0.09 PS(R2=0.94,RSD=1.56,P<0.01)。由此可见,利用化学法建立的菜籽饼粕DCE预测方程相关指数较高,方程拟合度高,而DE预测方程相关指数较低,方程拟合度较低。
The relationships between chemical composition of rapeseed meal and digestible energy（DE） or digestibility coefficient of energy（DCE） were investigated in order to establish relative prediction models for DE and DCE of rapeseed meal based on the chemical composition.A total of 12 crossbred barrows（Duroc×Landrace×Large white） with an average initial body weight of（46.37±1.53） kg were used in three 4×4 Latin square designs.The DE and DCE of 9 types of rapeseed meal were determined by total feces collection method and substitution method.The optimum prediction factors were selected to establish prediction equations for DE and DCE based on correlation relationship between DE or DCE and chemical composition including crude protein（CP）,ether extract（EE）,acid detergent fiber（ADF）,neutral detergent fiber（NDF）,crude fiber（CF）,acid detergent lignin（ADL）,protein solubility（PS）,ash and gross energy（GE）.The results showed that NDF was the best factor for predicting DCE,but ADF and NDF were the best factors for predicting DE.The recommended prediction models for DE were DE=16.20-0.10 NDF（R2=0.63,RSD=0.49,P0.05） and DE=16.32-0.15 ADF（R2=0.63,RSD=0.49,P0.05）.The recommended prediction models for DCE were DCE=97.27-0.87 NDF（R2=0.93,RSD=1.55,P0.01）,DCE=86.61-0.67 NDF＋0.09 PS（R2=0.94,RSD=1.56,P0.01）.In conclusion,the prediction equation for DCE of rapeseed meals by chemical analysis had higher correlation index and fitting degree compared with the prediction equation for DE.
出处
《动物营养学报》
CAS
CSCD
北大核心
2011年第9期1483-1489,共7页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
农业部公益性行业专项饲料营养价值与畜禽饲养标准研究与应用(20090300608)
关键词
菜籽饼粕
消化能
能量消化率
预测方程
生长猪
rapeseed meal
digestible energy
digestibility coefficient of energy
prediction equation
growing swine
