The effect of yeast selenium composite preparation on the production performance and egg quality of laying hens
To analyze the effect of yeast selenium composite preparation on the production performance and egg quality of laying hens.300 28 week old Hailan brown laying hens were selected for the experiment,and randomly divide them into 4 groups,with 5 replicates in each group,each with 15 replicates.The control group was allocated a basic diet according to the"Technical Regulations for Commercial Feeding and Management of Hailan Brown Shell Egg Chickens"(DB34/T 1650～2012),and the experimental group was supplemented with 100,200 mg/kg,and 300 mg/kg yeast selenium composite preparations in the basic diet.Preliminary trial period 7 days,trial period 60 days.The results showed that:(1)During the 1～30 day period,with the increase of the addition level of yeast selenium composite in the basic diet,there was an increasing trend in egg production rate(P＜0.10).During the 31～60 day period,compared with the control group,the addition of 200 mg/kg and 300 mg/kg yeast selenium composite to the basal diet significantly increased the egg production rate and average daily egg weight of laying hens(P＜0.05),and significantly reduced the feed to egg ratio of laying hens(P＜0.05).(2)On the 30th day of the experiment,compared with the control group,the addition of 200 mg/kg and 300 mg/kg yeast selenium composite to the basic diet significantly improved the egg yolk color(P＜0.05).On the 60th day of the experiment,compared with the control group,the addition of 200 and 300 mg/kg yeast selenium composite preparations to the basal diet significantly increased egg weight and protein height(P＜0.05).The addition of 100,200 and 300 mg/kg yeast selenium composite preparations to the basal diet significantly improved egg yolk color(P＜0.05).It can be seen that adding 200 and 300 mg/kg yeast selenium composite formulations can improve the production performance of laying hens and effectively improve egg quality.
yeast selenium composite preparationtraditional chinese medicinehailan brown laying hensproduction performanceegg quality
NETL
NSTL
万方数据
维普
