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《Feed Industry》 2013-09
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Determination of digestive, metabolizable energy and amino acid standardized ileal digestibility of spirit-based distillers' grains for growing pigs

Chen Ying,Liu Jundi,Piao Xiangshu,Zhang Hongyu,Wang Yuan  
This experiment was conducted to analyze the nutrient composition of spirit-based dis tillers' grains and determine the digestible energy(DE),metabolizable energy(ME) and standard ized ileal digestibility(SID) of amino acids of spirit-based distillers' grains.Soybean meal(SBM) was set as a control to evaluate the practicability of spirit-based distillers' grains used as protein feed ingredient for growing pigs.In Exp.1,6 crossbred barrows [Duroc×(Landrace×Large White)],with an average body weight(BW) of(35.3±3.5) kg,were used in a replicated 3×3 Latin squares design digestion trial.The DE and ME values of spirit-based distillers' grains and soybean meal were calculated using the substitution procedure and each feeding period lasted for 10 d,with to tal collection of feces and urine during the last 5 d.In Exp.2,6 crossbred barrows [BW=(32.3± 2.8) kg] fitted with a simple T-cannula at the distal ileum were allotted to one of three exper imental treatments in a replicated 3×3 Latin squares design to determine SID of amino ac ids of spirit-based distillers' grains and SBM.Each feeding period included of a 5-day adaptation period followed by 2 days for collection of ileal digesta.The results showed that spiritbased distillers' grains had lower DE(9.42 MJ/kg) and ME(8.91 MJ/kg) values compared with SBM(14.77 and 14.39 MJ/kg)(P0.05).The DE and ME values of spirit-based distillers' grains were 64% and 62% of that for SBM,respectively.The SID of essential amino acids(EAA) of spir it-based distillers' grains and SBM were 59.26 % and 79.85%,the SID of non-essential amino ac ids(NEAA) were 44.77% and 74.72%,and the SID of total amino acids(TAA) were 52.82% and 77.57%,respectively.Except for tryptophan and cystine,the SID of amino acids of spirit-based distillers' grains was less(P0.05) than that for SBM.The SID of EAA,NEAA and TAA in spiritbased distillers' grains were 74%,60% and 68% of that for SBM.These results indicated that the DE,ME values and SID of amino acid of spirit-based distillers' grains were lower than that for SBM,but spirit-based distillers' grains had a relatively high feeding value and could be used as protein feed ingredient in pig industry.
【CateGory Index】: S828.5
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