Effects of Acremonium terricola culture on the laying performance of laying hens afflicted with oviduct inflammation
The experiment aimed to investigate the impact of Acremonium terricola culture on the laying performance of hens with oviduct inflammation,in order to enhance the productivity of laying hens during the late laying period.A total of 390 hens at 90 days of age with oviduct inflammation were randomly divided into the experimental group and the control group,with four replicates per group,each consisting of 2500 laying hens.The control group was fed a basic diet,while the experimental group was fed the same diet supplemented with 1 g/kg of Acremonium terricola culture.The trial period was 21 days.The results showed that compared to the control group,the egg production rate,Haugh units,and egg weight in the experimental group increased by 1.74%(P<0.05),6.55%(P<0.05),and 1.86%(P>0.05),respectively,while the culling rate,broken egg rate,and spotted egg rate decreased by 34.29%(P<0.05),76.00%(P<0.05),and 35.80%(P<0.05),respectively.Compared to the control group,the levels of serum inflammatory factors such as tumor necrosis factor α(TNF-α),interleukin-1β(IL-1β),interleukin-6(IL-6),and interleukin-12(IL-12)in the experimental group laying hens were reduced by 23.76%(P<0.01),6.02%(P<0.05),16.49%(P<0.01),and 19.18%(P<0.05),respectively,while the levels of anti-inflammatory factors interleukin-4(IL-4)and interleukin-10(IL-10)were increased by 18.85%(P<0.05)and 29.49%(P<0.01),respectively.The study indicates that the addition of 1 g/kg Acremonium terricola culture in feed can significantly improve the laying performance of laying hens in the late laying period.The mechanism of action may involve the anti-inflammatory effects of Acremonium terricola,which can reduce the expression of inflammatory factors in the oviduct and intestinal inflammation of laying hens during the late laying period,increase the expression of anti-inflammatory factors,decrease systemic inflammatory responses,and thereby improve egg laying rate and egg quality.
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