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麦麸猪消化能与能量消化率预测方程的建立

DOI: 10.3969/j.issn.1006-267x.2012.10.009

Keywords: 麦麸,消化能,能量消化率,预测方程,猪

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Abstract:

本试验旨在测定麦麸的猪消化能(DE)及麦麸各化学成分对DE与能量消化率(DCE)的影响,分析用麦麸化学成分建立其DE与DCE的预测方程。试验选用12头三元杂交(杜×大×长)去势公猪,采用2个6×6拉丁方试验设计(6期,11种饲粮),应用全收粪法测定10种不同产地和批次麦麸的DE,通过分析麦麸原料中的粗蛋白质(CP)、粗纤维(CF)、酸性洗涤纤维、中性洗涤纤维、淀粉(St)、粗脂肪、粗灰分、总能与DE及DCE之间的相关关系,筛选出最佳的预测因子并建立预测方程。结果表明:10种麦麸的平均DE为11.72MJ/kg(干物质基础),平均DCE为61.31%,St为DE和DCE的最佳预测因子。推荐DE预测方程:DE=0.31×St+3.71(R2=0.76,RSD=0.42,P<0.01)、DE=-0.91×CF-0.71×CP+33.80(R2=0.76,RSD=0.35,P<0.01)。推荐DCE预测方程:DCE=1.70×St+22.28(R2=0.76,RSD=2.89,P<0.01),DCE=-5.02×CF-3.65×CP+182.81(R2=0.80,RSD=1.79,P<0.01)。由此可知,本试验利用麦麸原料营养成分建立的DE及DCE的预测方程相关指数较高,且由本试验结果预测的DE值比较准确。

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