戊聚糖酶处理混合糠对其营养价值的影响

采用自行研制的戊聚糖酶制剂处理混合糠１５ｋｇ，采用气相色谱法分析其酶处理效果，并用２头回直肠吻合术生长猪和８只５６日龄长沙黄肉仔鸡进行消化代谢试验。结果表明：混合糠经酶制剂处理后，戊聚糖降解率平均达５０％左右，且ＮＤＦ下降了１．１９％，ＡＤＦ和ＡＤＬ分别提高了２．７７％和０．６０％。生长猪消化试验结果表明，酶处理混合糠后，其ＤＭＤ、ＮＤＦＤ、ＡＤＦＤ分别提高了４．３６％、２．１４％、１３．３３％（Ｐ＜０．０１）和６．０９％（Ｐ＜０．０５）。肉鸡代谢试验结果表明，酶处理混合糠后，其ＤＭＤ、ＮＤＦＤ、ＡＤＦＤ和ＡＤＬＤ分别提高了１．１６％、３．１７％、２１．１４％（Ｐ＜０．０１）和７．２９％（Ｐ＜０．０５）；但可消化能（猪）和表现代谢能（鸡）却分别下降了０．４２ＭＪ／ｋｇ和０．８４ＭＪ／ｋ

Effects of the Pentosane Enzyme on the Nutritive Value of Rice Bran

kg rice bran was treated with the pentosane enzyme which was studied by ourselves in 1994.The treatmental efficiency was analysed by the gas chromatograph.The digestion and metabolism experiments in growing pigs and broilers were also conducted.The results showed that:after the rice bran was treated with the pentosame enzyme,the average degradation rate of pentosane was 50%;the contents of neutral detergent fibre (NDF) decreased by 1 19%;however,the contents of acid detergent fibre (ADF) and acid detergent lignin (ADL) increased by 2 77% and 0 60%,respectively.The digestibilities of DM、NDF、ADF and ADL were increased by 4 36%、2 14%、13 33%(P<0 01) and 6 09%(P<0 05),for growing pigs ; and 1 16%、3 17、21 24% (P<0 01) and 7 29%(P<0 05), for broilers, respectively, but the digestible energy (for growing pigs) and apparent metabolism energy (for broilers) decreased by 0 42MJ/kg and 0 84MJ/kg,respectively.