The effects of vitamin E on chicken production performance,serum immune indicators,and economic benefits
To study the effects of vitamin E on the production performance,serum immune indicators,and economic benefits of chickens,360 healthy Hailan brown laying hens with similar egg laying rates(89.52±1.43)％ at 48 weeks of age were selected for the experiment. They were randomly divided into 4 groups,with 3 replicates in each group and 30 chickens in each replicate. Each group was fed with a basic diet of+0 mg/kg,50 mg/kg,100 mg/kg,and 150 mg/kg of vitamin E for 42 days. The results showed that:(1)Compared with the 0 mg/kg vitamin E group,the egg production rate of the 50 mg/kg,100 mg/kg,and 150 mg/kg vitamin E groups increased by 2.88％,4.25％,and 3.70％(P<0.05);The feed to egg ratio decreased by 3.83％,5.92％,and 4.88％ (P<0.05).(2)Compared with the 0 mg/kg vitamin E group,the serum IgA content in the 50 mg/kg,100 mg/kg,and 150 mg/kg vitamin E groups increased by 17.31％,23.08％,and 26.92％(P<0.05);The IgG content increased by 34.56％,38.01％,and 42.12％ (P<0.05);The IgM content increased by 46.15％,38.46％,and 57.69％(P<0.05).(3)The gross profit of the four groups was 32.66,55.18,74.01,and 59.14 yuan,respectively. Conclusion:Under the experimental conditions,adding vitamin E to the basic diet can improve the production performance,serum immune indicators,and economic benefits of Hailan Brown laying hens. From the perspective of production performance and economic benefits,the appropriate level of vitamin E addition is 100 mg/kg.
vitamin EHailan Brown laying hensproduction performanceserum immune indicatorseconomic benefits
万方数据
维普
