不同组型饲粮中添加复合蛋白酶对鲁烟白猪氨基酸回肠表观消化率的影响  

Effects of Protamex Added in Different Composition Types of Diets on the Ileal Apparent Digestibility of Amino Acids of Lu-yan White Pigs

作　　者：姜建阳[1] 孙朋朋[1] 于光辉[1] 殷惠萌[1] 宋春阳[1] 

机构地区：[1]青岛农业大学动物科技学院,青岛266109

出　　处：《动物营养学报》2015年第3期863-869,共7页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：山东省现代农业产业技术体系生猪创新团队项目(SDAIT-06-011-09)

摘　　要：本试验旨在研究不同组型饲粮中添加复合蛋白酶对鲁烟白猪氨基酸回肠表观消化率的影响。试验选取去势、初始体重为(35.0±0.5)kg的健康鲁烟白猪生长公猪7头,采用2×3因子试验设计进行代谢试验,2因子分别为加酶(加酶组和对照组)和饲粮组型(玉米-豆粕型、玉米-杂粕型和小麦-杂粕型),其中加酶组的复合蛋白酶添加量为0.1%,对照组不添加复合蛋白酶。试验共分6期,每期7 d。结果表明,3种组型饲粮中添加复合蛋白酶显著提高了鲁烟白猪对蛋氨酸、缬氨酸、亮氨酸、异亮氨酸、苯丙氨酸和脯氨酸的回肠表观消化率(P<0.05);在饲喂玉米-杂粕型饲粮时,除苏氨酸外各加酶组氨基酸回肠表观消化率均显著或极显著高于对照组(P<0.05或P<0.01),其中丝氨酸、谷氨酸、半胱氨酸的回肠表观消化率都显著高于饲喂其他2种组型饲粮时(P<0.05)。由此可见,饲粮中添加复合蛋白酶可显著提高鲁烟白猪氨基酸回肠表观消化率,其中在玉米-杂粕型饲粮中添加复合蛋白酶效果较优。This experiment was conducted to investigate the effects of protamex added in different composition types of diets on the ileal apparent digestibility of amino acids of Lu-yan white pigs. Seven castrated, healthy growing Lu-yan white pigs on average body weight of （35.0±0.5） kg were be used in this experiment. A 2 × 3 factor test designed in metabolic testing, one factor was enzyme added （ enzyme added group and control group） , the other factor was dietary composition type （ corn-soybean meal type, corn-miscellaneous type and wheat-miscellaneous type ） . The control group did not add protease, while the enzyme added group added 0.1% protease. There was 6 periods in this experiment, and 7 d per period. The results showed that, there was a significantly increased in the ileal apparent digestibility of the methionine, valine, leucine, isoleucine, phen-ylalanine and proline of Lu-yan white pigs fed with the three composition types of diets added the protamex （ P〈0.05） . Fed with diet of corn-miscellaneous type, the ileal apparent digestibility of amino acids in enzyme added group were significantly higher than the control group except threonine （ P〈0.05 or P〈0.01） , in which the ileal apparent digestibility of the serine, glutamic acid and cystine were significantly higher than those in pigs fed with the other two composition types of diets （P〈0.05）. In conclusion, the dietary added protamex can improve the ileal apparent digestibility of Lu-yan white pigs, and the effect of diet of corn-miscellaneous type is better.

关 键 词：复合蛋白酶 鲁烟白猪 氨基酸 回肠表观消化率 

分 类 号：S816.7[农业科学—饲料科学] S828[农业科学—畜牧学]