公开(公告)号：US5612055A

公开(公告)日：1997-03-18

申请号：US515610

申请日：1995-08-16

申请人： Michael R. Bedford ,  Andrew J. Morgan ,  Kathleen Clarkson ,  Hagen K. Schulze

发明人： Michael R. Bedford ,  Andrew J. Morgan ,  Kathleen Clarkson ,  Hagen K. Schulze

IPC分类号： A23K1/165 ,  A23K1/18 ,  C12N9/24 ,  C12N9/56 ,  A23K1/17

CPC分类号： C12Y302/01006 ,  A23K20/189 ,  A23K50/75 ,  C12N9/244 ,  C12N9/248 ,  C12N9/54 ,  C12Y302/01008 ,  C12Y302/01032 ,  C12Y304/00 ,  C12Y304/21014

摘要： An enzyme feed additive is provided comprising a xylanase, a protease, and optionally a .beta.-glucanase. The ratio of the units of xylanase activity per unit amount of the feed additive to the units of .beta.-glucanase activity per same unit amount of the feed additive is 1:0-0.25.Preferably, the xylanase is the low pI xylanase and/or the high pI xylanase obtained from Trichoderma longibrachiatum.Preferably, the protease is a mutant subtilisin comprising a substitution at the amino acid residue position equivalent to tyr+217 of Bacillus amyloliquefaciens subtilisin with leucine.

摘要翻译： 提供的酶饲料添加剂包括木聚糖酶，蛋白酶和任选的β-葡聚糖酶。 饲料添加剂每单位量的木聚糖酶活性单位与每单位饲料添加剂β-葡聚糖酶活性单位的比例为1:0-0.25。 优选地，木聚糖酶是从木霉木霉获得的低pI木聚糖酶和/或高pI木聚糖酶。 优选地，蛋白酶是突变型枯草杆菌蛋白酶，其包含在与亮氨酸相当于解淀粉芽孢杆菌枯草杆菌蛋白酶的tyr + 217的氨基酸残基位置处的取代。