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Effect of Lactobacillus salivarius SNK-6 on egg quality, intestinal morphology, and cecal microbial community of laying hens

文献类型： 外文期刊

作者： Liu, Wei 1 ; Liu, Jie 1 ; Li, Dapeng 1 ; Han, Haixia 1 ; Yan, Huaxiang 4 ; Sun, Yan 1 ; Lei, Qiuxia 1 ; Wang, Jie 1 ; Zhou, Yan 1 ; Cao, Dingguo 1 ; Li, Huimin 1 ; Li, Fuwei 1 ;

作者机构： 1.Shandong Acad Agr Sci, Poultry Inst, Jinan 250100, Peoples R China

2.Poultry Breeding Engn Technol Ctr Shandong Prov, Jinan 250100, Peoples R China

3.Jinan Key Lab Poultry Germplasm Resources Innovat, Jinan 250100, Peoples R China

4.Shanghai Acad Agr Sci, Anim Husb & Vet Res Inst, Shanghai 201106, Peoples R China

关键词： Lactobacillus salivarius; egg quality; intestinal morphology; cecal microbial community; laying hen

期刊名称：POULTRY SCIENCE （ 影响因子：4.4； 五年影响因子：4.4 ）

ISSN： 0032-5791

年卷期： 2024 年 103 卷 1 期

页码：

收录情况： SCI

摘要： The objective of this study was to investigate the effect of Lactobacillus salivarius (L. salivarius) SNK-6 supple-mentation on the laying performance, egg quality, blood parameters, intestinal morphology, and cecal microbial community of laying hens. A total of 432 healthy 30-wk-age laying hens were randomly divided into 3 groups with 6 replicates under the same husbandry and dietary regimes: control (CON); 2.0 x 10(8) CFU/kg L. salivarius supplementation (T1); 2.0 x 10(9) CFU/kg L. salivarius supplementation (T2). The experiment lasted for 10 wk. The results indicated that the supplementation resulted in a significant reduction in the broken egg and unqualified egg ratios, and a significant increase in the eggshell strength, eggshell relative weight, albumen height, and Haugh units (P < 0.05). The L. salivarius-treated hens exhibited significantly reduced serum malondialdehyde levels (P < 0.05); significantly increased total protein, phosphorus, calcitonin, and immunoglobulin M (P < 0.05); significantly increased cecal secretory immunoglobulin A concentration (P < 0.05); significantly improved villus height (VH) in the duodenum and VH to crypt depth ratio in the jejunum (P < 0.05). The serum globulin and interleukin-1 beta, immunoglobulin G concentrations, and catalase activity significantly increased in T2 (P < 0.05). Furthermore, the serum interferon-alpha level in T1 was significantly higher than that of the CON (P < 0.05). The intestinal barrier-related mRNA gene ZO-1, CLDN1, and MUC2 expression in the jejunum was significantly upregulated in the T1 and T2 groups (P < 0.05). The Firmicutes/Bacteroidetes ratio was higher and the relative abundances of Flavonifractor and Clostridiales_noname were significantly higher in the T1 group (P < 0.05). In conclusion, dietary supplementation with L. salivarius SNK-6 may improve hen egg quality, serum antioxidant capacity, immune function, and intestinal health.

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