摘要
选用160只1日龄肉仔鸡随机分为4组,每组设4个重复,以正常磷日粮为对照,研究在低磷日粮中添加植酸酶,分别于不同温度(75℃、80℃、85℃)制粒对肉仔鸡生长性能及钙、磷利用的影响。结果表明:①不同制粒温度条件下,低磷日粮添加植酸酶均可提高肉仔鸡的平均日增重和饲料利用率,75℃组好于其他温度组;②与对照组比较,2、3、4组肉仔鸡磷排出量(g/kg采食日粮)分别降低了33.45%、32.41%和29.66%(P<0.05);③除75℃组胫骨长度显著高于对照组外(P<0.05),各试验组各项胫骨指标与对照组差异均不显著(P>0.05);④各组血清磷、血清钙、血清碱性磷酸酶差异不显著(P>0.05);⑤与对照组比较,各试验组的总磷、钙、粗蛋白、干物质表观消化率均提高(P>0.05)。
160 one-day-old broilers were randomly divided into four group, each with four replications. A trial was conducted to study effects of different pelleting temperature （75℃, 80℃, 85℃ ） on growth performance ,calcium and phosphorus utilization in broilers fed contained phytase diets. The results obtained were as follows： ①Under different pelleting temperature condition, adding phytase to low phosphorus diets improved ADG and feed conversion rate, the 75℃ group was better than others. ②Compared with control group, the P excretion（g/kg feeding diets） of group 2,3,4 broilers reduced 33. 45%,32.41% and 29.66% （P〈0.05）. ③Besides the length of tibia bone of 75℃group is significantly higher than control group（P〈0.05）, the quality of tibia bone of experimental group are not differed significantly with control group（P〈0.05）. ④The concentration of serum P, Ca, AKP of treatment group are not differed significantly（P〉0.05）.⑤Compared with control group , the apparent digestion of TP, Ca, protein and dry material are improved（P〉0.05）.
出处
《西北农业学报》
CAS
CSCD
北大核心
2007年第4期47-51,共5页
Acta Agriculturae Boreali-occidentalis Sinica
基金
国家星火计划项目(2001EA780037)
关键词
制粒温度
肉仔鸡
生长性能
钙
磷利用
Pelleting temperature
Broilers
Growth performance
Calcium and phosphorus utilization
