裂殖壶藻粉对蛋鸡生产性能、蛋品质及血清生化指标的影响OA

This experiment aimed to investigate the effects of dietary supplementation with Schizochytrium sp.meal on the production performance,egg quality,serum biochemical indices,and apparent metabolic rate of nutrients in laying hens.A total of 384 healthy 37-week-old Jingfen No.6 laying hens with similar body weight were randomly divided into four groups,with six replicates per group and 16 hens per replicate.Control group(group CON)was fed a basal diet,while the experimental groups Ⅰ,Ⅱ,and Ⅲ were fed the basal diet supplemented with 0.4%,0.6%,and 0.8%Schizochytrium sp.meal,respectively.The pre-trial period was one week,and the formal trial period was eight weeks.The results showed that compared with the group CON,eggshell strength was significantly increased in the group Ⅲ(P<0.05).Serum high-density lipoprotein cholesterol(HDL-C)content was significantly elevated(P<0.05),while triglyceride(TG)content and alanine aminotransferase(ALT)activity were significantly reduced(P<0.05)in group Ⅲ,The docosahexaenoic acid content in egg yolks was significantly higher in the group Ⅲ(P<0.05).The study shows that dietary supplementation with 0.8%Schizochytrium sp.meal can effectively improve egg quality,serum biochemical indices,and fatty acid composition in eggs.