大豆黄酮对产蛋后期蛋鸡生产性能、血液指标和经济效益的影响

Effects of Daidzein on Performance,Blood Parameters and Economic Benefits in Laying Hens during the Late Laying Period

本试验旨在探讨饲粮中添加大豆黄酮对产蛋后期蛋鸡生产性能、血液指标、经济效益的影响。选取体重、产蛋率相近的56周龄海兰褐蛋鸡640只,随机分为4组(每组8个重复,每个重复20只),对照组饲喂基础饲粮,试验组饲喂在基础饲粮中分别添加10、50、100 mg/kg大豆黄酮的试验饲粮,试验期12周。结果表明:添加10 mg/kg大豆黄酮能极显著提高蛋重(P<0.01);添加50 mg/kg大豆黄酮能极显著提高产蛋率、降低料蛋比(P<0.01)。添加大豆黄酮显著提高了蛋鸡血清总蛋白、磷、钙、总胆固醇含量(P<0.05),对采食量、血液常规指标及血清白蛋白含量、谷草转氨酶活性、甘油三酯含量、葡萄糖含量、碱性磷酸酶活性、雌二醇水平和孕酮水平影响均不显著(P>0.05)。从经济效益上看,添加50 mg/kg大豆黄酮最好。由此可知,在蛋鸡产蛋后期饲粮中添加50 mg/kg大豆黄酮可以改善生产性能,且能够获得较佳的经济效益。

This trial was conducted to evaluate the effects of daidzein on performance, blood parameters and e- conomic benefits in laying hens during the late laying period. Six hundred and forty 56-week-old Hy-Line Brown laying hens with the similar body weight and laying rate were randomly assigned to 4 groups with 8 rep- licates in each group and 20 birds in each replicate, and fed basal diets supplemented with 0 （ control）, 10, 50 and 100 mg/kg daidzein for 12 weeks, respectively. The results showed as follows： the supplementation of 10 mg/kg daidzein significantly increased egg weight （P 〈 0.01 ）, and the supplementation of 50 mg/kg daid- zein significantly increased laying rate and decreased the ratio of feed to egg （ P 〈0.01 ）. Dietary daidzein also had significantly increased the contents of total protein, calcium, phosphorus and total cholesterol in serum of laying hens （ P 〈 0.05 ）, but did not significantly affect feed intake, blood routine parameters, and albumin content, aspartate aminotransferase activity, triglycerides content, glucose content, alkaline phosphatase activi- ty, estradiol level and progesterone level in serum of laying hens （P 〉 0. 05 ）. The supplementation of 50 mg/kg daidzein brings the best economic benefits. It is indicated that the supplementation of 50 mg/kg daidzein can improve performance and get better economic benefits in laying hens during the late laying period.