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首页> 外文期刊>日本家禽学会誌 >Reduction of excretory phosphorus and trace minerals by dietary supplementation of microbial phytase in broiler chicks
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Reduction of excretory phosphorus and trace minerals by dietary supplementation of microbial phytase in broiler chicks

机译：日粮中添加微生物植酸酶减少肉鸡排泄性磷和微量矿物质

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An experiment was conducted to study the effect of microbial phytase on excretory phosphorus (P), copper (Cu), zinc (Zn) and manganese (Mn) in broiler chicks. Male broiler chicks with three replications of 10 chicks each were given free access to the experimental diet from 7 to 21 days of age. The basal diet consisted mainly of corn, soybean meal and defatted rice bran, and contained 0.60 percent total P, 0.30 percent non-phytate P, 0.90 percent calcium, 8.1 mg Cu, 82.3 mg Zn and 95.3 mg Mn per kgof diet, and 0.1 percent chromium oxide as an indicator. To the basal diet, defluorinated phosphate (0.075 and 0.15 percent as non-phytate P) or microbial phytase (125, 250 and 500 units/kg of diet) was added. The excreta of each replication were collected for the last three days of the experiment, and the retention ratio and excretion of total P, phytate P, Cu, Zn and Mn were calculated. The retention ratio of total P, Cu and Zn increased almost linearly with the increase of supplemented phytase. When500 units/kg phytase were added, total P excretion was reduced by 31 percent, and the excretion of Cu and Zn was also reduced by 7 percent, respectively, in comparison with the diet containing 0.45 percent non-phytate P. However, the excretion of Mn wasnot affected by the addition of phytase.
机译：进行了一项实验来研究微生物植酸酶对肉仔鸡排泄性磷（P），铜（Cu），锌（Zn）和锰（Mn）的影响。在7至21天的年龄内，可以自由复制实验雏鸡，每只雏鸡有3个重复，每只雏鸡有3个重复。基础日粮主要由玉米，豆粕和脱脂米糠组成，每千克日粮含总磷0.60％，非植酸磷0.3％，钙0.90％，铜8.1毫克，锌82.3毫克和锰95.3毫克，以及0.1百分比的氧化铬作为指示剂。向基础日粮中添加脱氟磷酸盐（非植酸磷为0.075和0.15％）或微生物植酸酶（日粮为125、250和500单位/ kg）。在实验的最后三天收集每次重复的排泄物，并计算总磷，植酸磷，铜，锌和锰的保留率和排泄量。随着植酸酶含量的增加，总磷，铜和锌的保留率几乎呈线性增加。与含0.45％非植酸磷的日粮相比，添加500单位/ kg植酸酶时，总磷排泄量减少了31％，铜和锌的排泄量也分别减少了7％。植酸酶的添加不会影响锰的含量。

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