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当前位置: 首页 > 文章 > 玉米-豆粕型日粮中添加高剂量植酸酶对肉鸡生长性能和血清生化指标的影响 中国畜牧兽医 2011,38 (4) 11-15
Position: Home > Articles > High Doses of Microbial Phytase Affect Growth Performance and Serum Biochemical Parameters in Broiler Chicks Fed Corn-soybean Meal Diets China Animal Husbandry & Veterinary Medicine 2011,38 (4) 11-15

玉米-豆粕型日粮中添加高剂量植酸酶对肉鸡生长性能和血清生化指标的影响

作  者：
孙宏选;高秀华;杨禄良
单  位：
中国农业科学院饲料研究所
关键词：
高剂量;植酸酶;肉鸡;生长性能;血清生化指标
摘  要：
本试验研究了玉米—豆粕型日粮中添加高剂量不同水平的植酸酶对0~3和3~6周肉鸡生长性能和血清生化指标的影响。选用1日龄AA肉公雏576只,随机分为6组,每组8个重复,每个重复12只。试验日粮分0~3和3~6周两个阶段,6个处理组分别为:正对照组(前期总磷0.69%,0.45%NPP;后期总磷0.59%,0.35%NPP);负对照组(前期总磷0.60%,0.35%NPP;后期总磷0.49%,0.25%NPP);4个试验组在负对照日粮中分别添加500、2000、8000和32000 FTU/kg4种水平的植酸酶。结果显示,①日粮添加植酸酶水平显著影响前期(1~21日龄)平均日增重(P<0.05),对采食量和饲料转化效率(F∶G)影响差异不显著(P>0.05)。②日粮添加植酸酶水平对后期(22~42日龄)平均日增重和饲料转化效率(F∶G)影响差异显著(P<0.05),添加植酸酶水平对采食量影响差异不显著(P>0.05)。③在低磷日粮中添加高水平植酸酶8000FTU/kg时,饲料转化效率最高。④随着植酸酶水平增加,21日龄肉鸡血清钙水平有降低趋势,血清磷水平显著增加(P<0.05),血清碱性磷酸酶活性显著降低(P<0.05),对总蛋白影响差异不显著(P>0.05)。植酸酶添加水平影响42日龄肉鸡血清钙水平、总蛋白水平和血清碱性磷酸酶活性,对血清磷水平影响显著(P<0.05)。因此,在低磷日粮中添加高剂量不同水平的植酸酶肉鸡的生长性显著增加,碱性磷酸酶的活性显著降低,添加8000 FTU/kg效果优于500、2000和32000 FTU/kg。
译  名：
High Doses of Microbial Phytase Affect Growth Performance and Serum Biochemical Parameters in Broiler Chicks Fed Corn-soybean Meal Diets
作  者：
SUN Hong-xuan1,GAO Xiu-hua1,YANG Lu-liang1,2 (1.Feed Research Institute,Chinese Academy of Agricultural Sciences,Beijing 100081,China;2.Beijing Challenge Agricultural Science and Technology Ltd.,Beijing 100081,China)
关键词：
high doses;phytase;broiler;growth performance;serum biochemical parameters
摘  要：
An experiment was conducted to determine the effect of high doses of microbial phytase supplementation in corn-soybean meal diets on growth performance and serum biochemical indices.A total of 576 one-day old male Arbor Acres broilers were assigned to 6 dietary treatments,consisting of 8 pens of 12 birds each,and were fed two periods experimental diets from 1 to 21 d and 22 to 42 d.The diets include a positive control(0.69% TP,0.45% nonphytate P for 1 to 21 d;0.59% TP,0.35% nonphytate P for 22 to 42 d)and a negative control(0.60% TP,0.35% nonphytate P for 1 to 21 d;0.49% TP,0.25% nonphytate P for 22 to 42 d),and 4 more negative diets with 500,2000,8000,32000 FTU/kg phytase.The results showed that①High doses of phytase addition had significantly improved the ADG at 3 weeks(P<0.05),while the feed intake and F∶G had no significantly differences(P>0.05).②High doses of phytase addition had significantly improved the ADG and F∶G at 6 weeks(P<0.05),with the phytase levels increasing,the ADG and F∶G had significantly increased(P<0.05),the feed intake had no differences(P>0.05).③Compared with the negative control diet with 8000 FTU/kg phytase improved the best performance ADG and F∶G.④Diets with high doses of phytase had significant effect on serum P and Ca and Alkalescence(at 21 or 42 d).With the phytase levels increasing,the levels of serum P were significantly increased(P<0.05),serum Ca were decreased,serum AKP were significantly decreased(P<0.05).Therefore,graded doses and high doses of phytase supplementation beyond present standards(500 FTU/kg)could further improve growth performance and reduce serum AKP of broilers.

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