非淀粉多糖酶和植酸酶对肉仔鸡生长性能和养分利用性的影响

以 8 8 8只艾维因肉仔鸡为试验动物 ,研究添加非淀粉多糖酶 (40 0mg/kg)和植酸酶 (30 0mg/kg)对肉仔鸡的生长性能和养分利用性的影响。试验结果表明 :玉米 -菜粕 -豆粕日粮中添加非淀粉多糖酶 (减少 1.4 %AME)和植酸酶(减少 0 .0 8%非植酸磷 ) ,甚至再减少 0 .0 1%赖氨酸 ,都不会显著影响肉仔鸡 4 2日龄体重 (P >0 .0 5 ) ,但饲料转化率得到改善 ,死亡率降低。添加非淀粉多糖酶可提高AME和TME(P >0 .0 5 )和氮沉积量和氮表观消化率 (P >0 .0 5 )。非淀粉多糖酶对总磷的消化率没有显著影响 (P >0 .0 5 ) ,但同时添加非淀粉多糖酶和植酸酶 (减少 0 .0 8%非植酸磷 ) ,可显著提高总磷的表观消化率和真消化率分别为 16和 16 .1个百分点 (P <0 .0 5 )。

Effects of Nonstarch Polysaccharidase and Phytase on the Performance of Broilers and Utilization of Nutrients

Two experiments were conducted with 888 Avian chicks to investigate the effects of nonstarch polysaccharidase (400mg/kg)and phytase (300mg/kg) on the performance of broilers and utilization of nutrients.The results indicated:the addition of nonstarch polysacchridase(-1.4%AME) and phytase (-0.08% available phosphorus),even lysine reduced 0.01%,didn′t affect body weight of 42\|d\|old broilers(P>0.05)fed corn rapeseed meal soybean meal diet,but improved feed efficiency and decreased the mortality.Nonstarch polysacchridase supplementation in creased AME and TME (P>0.05)?nitrogen retention and the apparent digestibility of nitrogen(P>0.05).Nonstarch polysacchridase did not affect the total phosphorous digestibility(P>0.05).The addition of phytase(-0.08%available phosphorus)simultaneously with nonstarch polysacchridase enhanced the apparent and true digestlibility of total phosphorus by 16% and 16.1%,respectively(P<0.05).