The effect of fermented feed on egg production performance,egg quality,and serum biochemical indicators of Hailan brown shell laying hens
The experiment aims to investigate the effects of adding different amounts of fermented feed to the feed of laying hens on their production performance,egg quality,and serum biochemical indicators.Select 480 Hailan brown shell laying hens at 54 weeks of age with similar body weight and egg laying performance,Randomly divided into 4 experimental groups,each with 10 replicates and 12 chickens per replicate.The control group received a conventional basal diet,while the experimental group received fermented feed supplemented with 2%,4%,and 6%lactobacilli and brewing yeast as fermentation strains in the basic diet.The pre trial period for the experiment is 1 week,and the trial period is 6 weeks.The results of the study showed that The feed to egg ratio of laying hens in the 4%fermented feed group and 6%fermented feed group significantly decreased by 7.23%and 5.96%(P＜0.05).The egg yolk color of the 6%fermented feed group was significantly improved(P＜0.05).Compared to the control group,the Hasselblad units of the 4%fermented feed group and the 6%fermented feed group were significantly increased.The serum cholesterol content of the group with added fermented feed was significantly lower than that of the control group by 20.4%,25.87%,and 23.55%,respectively(P＜0.05).The experimental conclusion is that under the experimental conditions of this study,feeding Hailan brown shell laying hens fermented feed can reduce the feed to egg ratio,improve the color grade of egg yolks,and increase the Hasselblad unit,and lower serum cholesterol,with a 6%addition being the most suitable.
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