月桂酸单甘油酯对产蛋后期蛋鸡生产性能、蛋品质和肠道健康的影响OA

This study aimed to investigate the effects of glyceryl monolaurate(GM)on the production performance,egg quality,and intestinal health of laying hens during the late laying period.800 72-week-old Hyline brown laying hens were randomly divided into 4 groups(10 replicates×20 hens),the CON group was fed a basic diet,GM250,GM500,and GM1000 groups were fed basic diet supplemented with 250,500,and 1000 mg/kg GM,respectively.Pre-trial for 14 days,and main trial for 42 days.Results:Compared with the CON group,the egg laying rate of GM500 and GM1000 groups was significantly increased(P<0.05),and the feed egg ratio was significantly decreased(P<0.05);The soft broken egg rate was significantly reduced in all groups(P<0.05).The yolk weight and Haugh unit of GM500 group were significantly increased(P<0.05),and the yolk color and eggshell strength of GM500 and GM1000 groups were significantly increased(P<0.05).The contents of cecal acetic acid and T-VFA in GM500 and GM1000 groups were significantly increased(P<0.05).The mRNA expressions of NF-κB and MUC2 in jejunum were significantly increased in GM500 and GM1000 groups(P<0.05),the mRNA expression of IL-1 β in ileum was significantly decreased in gm500 group(P<0.05),the mRNA expression of MUC2 was significantly increased(P<0.05),the mRNA expression of ZO-1 was significantly increased in GM500 and GM1000 groups(P<0.05),the mRNA expression of NF-κB was significantly decreased in each group(P<0.05).Conclusion:500 mg/kg GM can inhibit intestinal inflammation and improve egg quality and laying performance.