中国畜牧杂志2017，Vol.53Issue(4)：70-75,6.DOI:10.19556/j.0258-7033.2017-04-070
低磷饲粮添加植酸酶对生长猪生长性能、营养物质表观消化率和排泄量的影响
Low-Phosphorus Diet Supplemented with Phytase on Growth Performance, Apparent Nutrient Digestibility and Fecal Excretion of Growing Pigs
摘要
Abstract
This study was conducted to investigate the effects of phytase supplementation in low-phosphorus diet on growth performance,apparent nutrient digestibility and fecal excretion of growing pigs.One hundred and twelve healthy growing pigs (Landrace×Large White,35～40 kg) were randomly allotted to 4 groups with 4 replicates per group and 7 growing pigs per replicate.The growing pigs in positive control group were fed a normal phosphorus diet,while in negative control group were fed a low phosphorus diet.The pigs in experimental groups were fed a low phosphorus diet supplemented with 500 or 1 000 U/kg phytase,respectively.The results showed as follows.Compared with negative control group,supplementation with phytase significantly increased average daily gain and decreased feed to gain ratio (P＜0.05) of growing pigs;significantly increased the apparent digestibility of Ash and P (P＜0.05) and significantly increased the apparent digestibility of essential amino acid Phe and non-essential amino acid Cys (P＜0.05).Furthermore,the apparent digestibility of Cu,Fe,Mn,Mg,and Co was significantly increased (P＜0.05) and the fecal excretion of P,Cu,Fe,Mn,Co was significantly decreased (P＜0.05) by the supplementation of phytase.In conclusion,supplementation of phytase in com-soybean meal low phosphorus diet can improve the growth performance,enhance the apparent digestibility of nutrients and decrease the fecal excretion of mineral element.In the present study,supplementation of phytase at 500 U/kg in corn-soybean meal low phosphorus diet (AP 2.4 g/kg) can achieve the same growth performance with normal phosphorus diet,and additional at 1000 U/kg have the higher effect on apparent nutrient digestibility.关键词
低磷饲粮/植酸酶/生长性能/养分表观消化率/矿物元素排泄量Key words
Low phosphorus diet/Phytase/Growth performance/Nutrient apparent digestibility/Mineral element excretion分类
农业科技引用本文复制引用
王晶,季海峰,王四新,刘辉,张董燕,王雅民,赵臣..低磷饲粮添加植酸酶对生长猪生长性能、营养物质表观消化率和排泄量的影响[J].中国畜牧杂志,2017,53(4):70-75,6.基金项目
生猪产业技术体系北京市创新团队(BAIC02-2016) （BAIC02-2016）
