期刊
JOURNAL OF APPLIED POULTRY RESEARCH
卷 27, 期 1, 页码 116-123出版社
OXFORD UNIV PRESS
DOI: 10.3382/japr/pfx052
关键词
mannan-oligosaccharide; performance; egg quality; economic analysis; Saccharomyces cerevisiae
资金
- CNPq - Brazil
Yeast cell walls can strengthen the immune system and promote agglutination of gastrointestinal tract pathogens, thereby improving animal health and productivity. This study evaluated the effect of supplementing the diet of commercial laying hens with 0, 225, 450, or 900 ppm of yeast cell wall supplement on hen productive performance, egg quality, and economic viability. Yeast cell wall supplementation increased the feed intake, egg production, egg mass, albumen height, and Haugh unit score. Shell thickness and yolk color also were affected by the treatments. The economic viability analysis demonstrated that although feeding costs more with supplementation, the production of more eggs is possible, resulting in a greater than proportional increase in the gross margin. Thus, yeast cell wall supplementation had beneficial effects on the productive performance of laying hens, improved the internal and external egg quality, and contributed to greater profitability.
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