EFFECT OF DIFFERENT LEVELS OF SELENIUM-ENRICHED SACCHROMYCES CEREVISIAE ON THE PRODUCTION PERFORMANCE, EGG QUALITY, LIPID PROFILE, ANTIOXIDANT STATUS, AND INTESTINAL MICROBIAL STRUCTURE OF LAYING HENS UNDER HOT CONDITIONS | ||
| Egyptian Journal of Nutrition and Feeds | ||
| Volume 27, Issue 3, December 2024, Pages 431-439 PDF (399.77 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejnf.2024.394235 | ||
| Authors | ||
| A. M. Elbaz1; Eman S. Ashmawy1; M. A. Farahat1; H. A. Thabet* 2; Ghada G. Gad2 | ||
| 1Poultry and Animal Nutrition Department, Desert Research Center, Mataria, Cairo, Egypt | ||
| 2Poultry Production Department, Faculty of Agriculture, Ain Shams University, Egypt | ||
| Abstract | ||
| This study aimed to investigate the effects of different levels of selenium-enriched Saccharomyces cerevisiae (S. cerevisiae) on the production performance, egg quality, lipid profile, antioxidant status, and intestinal health of laying hens under hot environmental conditions. A total of 200 healthy 23-wk-age Brown Lohmann layers were randomly divided into 4 treatments, each in 5 replicates as follows: the first group (Se-ES0) fed the basal diet without supplementation (control), the second group fed the basal diet supplemented with 0.25 g selenium-enriched S. cerevisiae (Se-ES1), the third group fed the basal diet supplemented with 0.5 g selenium-enriched S. cerevisiae (Se-ES2), the fourth group fed the basal diet supplemented with 1.0 g selenium-enriched S. cerevisiae (Se-ES3). After 8 weeks, the results showed a deterioration in the productive performance and egg quality of laying hens fed on a diet without additives under heat stress conditions (P < 0.05). Compared with the control group, the feed conversion ratio (FCR) improved (P < 0.05), and the egg production%, albumen weight, albumen height, and Haugh unit in the Se-ES2 and Se-ES3 groups increased significantly (P < 0.05). Furthermore, the antioxidant capacity in the Se-ES3 group was enhanced than that in the other groups (P < 0.05) decreased MDA and increased SOD levels. Additionally, the lipid profile improved in the Se-ES3 group (P < 0.05) by decreased cholesterol and increased HDL levels. Moreover, supplementation with Se-ES modified the microbial content, as the Lactobacillus count increased, and the E. coli and Coliform count decreased. It can be concluded, that adding selenium-enriched S. cerevisiae improved the egg production%, FCR, and Haugh unit and enhanced microbial community, lipid profile, and antioxidant status of heat-stressed laying hens. | ||
| Keywords | ||
| Selenium-enriched Saccharomyces cerevisiae; laying hens; performance; lipid profile; antioxidant status; microbial count | ||
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