低磷饲粮添加植酸酶对蛋鸭产蛋性能、蛋品质和胫骨指标的影响  

Effect of Phytase Supplementation in Low-Phosphorus Diets on Laying Performance,Egg Quality and Tibia Indices in Laying Ducks

作　　者：李燕[1] 张罕星[1] 林映才[1] 郑春田[1] 

机构地区：[1]广东省农业科学院动物科学研究所,畜禽育种国家重点实验室,农业部动物营养与饲料(华南)重点开放实验室,广东省动物育种与营养公共实验室,广东省畜禽育种与营养研究重点实验室,广东广州510640

出　　处：《中国家禽》2015年第14期30-34,共5页China Poultry

基　　金：现代农业产业技术体系建设专项资金(CARS-43-13)

摘　　要：试验旨在研究低磷饲粮添加植酸酶对山麻鸭产蛋性能、蛋品质、胫骨指标的影响。选取120日龄山麻鸭750只,随机分为5组,每组6个重复,每个重复25只,Ⅰ组为对照组,饲粮非植酸磷水平为0.35%,Ⅱ组非植酸磷水平为0.20%,Ⅲ组在Ⅱ组基础上添加100 mg/kg植酸酶,Ⅳ组非植酸磷水平为0.30%,Ⅴ组在Ⅳ组基础上添加100 mg/kg植酸酶。试验期11个月,分为两阶段：第一阶段,0-171 d,产蛋率〉90%;第二阶段,172-335 d,80%〈产蛋率〈90%。结果表明：①在两个阶段,各组蛋鸭在产蛋性能上无显著差异（P〉0.05）。②第二阶段Ⅲ组蛋壳强度显著高于Ⅱ组（P〈0.05）,Ⅴ组蛋壳强度显著高于Ⅳ组（P〈0.05）,其他蛋品质指标无显著差异（P〉0.05）。③第一阶段Ⅱ组的骨密度和骨矿盐均显著低于Ⅰ组（P〈0.05）,其他胫骨指标无显著差异（P〉0.05）。④各组蛋鸭的血钙含量无显著差异（P〉0.05）,第一阶段Ⅱ组血磷含量显著低于Ⅰ组（P〈0.05）。结果表明,低磷饲粮可显著降低蛋壳质量和骨骼质量,在第二阶段低磷饲粮中添加植酸酶可改善蛋壳质量。生产中可考虑饲粮非植酸磷水平为0.20%时添加100 mg/kg植酸酶替代部分磷酸氢钙。The experiment was conducted to study the effect of phytase supplementation in low-phosphorus diets on laying performance,egg quality,tibia indices in laying ducks. 750 120-day-age Shanma ducks were randomly allotted into 5 treatments with 6 replicates per treatment and 25 ducks in each replicate. Group Ⅰ was the control group,dietary non-phytin phosphorus（NPP）level of which was 0.35%. Dietary NPP level of group Ⅱ was 0.20%. Based on the diet of group Ⅱ,group Ⅲ was added to 100 mg/kg phytase. Dietary NPP level of group Ⅳ was 0.30%. Based on the diet of group Ⅳ,group Ⅴ was added to 100 mg/kg phytase. The trial lasted for 11 months and was divided into two stages：the first stage,day 0 to 171,laying rate was above 90%;the second stage,day 172 to 335,laying rate was between80% to 90%. The results showed that：①There were no significant differences in laying performence of Shanma ducks at two stages among 6 groups（P〉0.05）. ②The eggshell thickness in group Ⅰ,Ⅲ and Ⅴ were higher than those of group Ⅱ and Ⅳ（P〈0.05）. On the second stage,eggshell strength of group Ⅲ was significantly higher than that ofⅡ group（P〈0.05）,eggshell strength of group Ⅴ was significantly higher than that of Ⅳ group（P〈0.05）,but there were no significant difference on other egg quality indices（P〉0.05）. ③On the first stage,bone mineral density and bone mineral salt in group Ⅱ were significantly lower than group Ⅰ（P〈0.05）. But there were no significant differences on other tibia indices of Shanma ducks at two stages among 6 groups（P〉0.05）. ④There were no significant differences in blood calcium content among 6 groups（P〉0.05）,while serum phosphorus content in group Ⅱ was significantly lower than group Ⅰ（P〈0.05）. The results suggested that low-phosphorus diet could significantly decrease eggshell quality and bone quality of Shanma ducks;On the second stage of the peak laying period,adding phytase to low-phosphorus diets could improve eggshell qu

关 键 词：山麻鸭 低磷 植酸酶 产蛋性能 蛋品质 胫骨指标 

分 类 号：S834.5[农业科学—畜牧学]