Effect of Rosmarinus officinalis supplementation on productive performance and egg quality traits in laying hens: A systematic review and meta-analysis
The potential advantages of natural feed additives in poultry nutrition have been well established. Among these, Rosmarinus officinalis (rosemary) has been recognized for its ability to enhance growth and improve productive performance in poultry. These benefits are largely attributed to the bioacti...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-03-01
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| Series: | Journal of Agriculture and Food Research |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666154325000304 |
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| Summary: | The potential advantages of natural feed additives in poultry nutrition have been well established. Among these, Rosmarinus officinalis (rosemary) has been recognized for its ability to enhance growth and improve productive performance in poultry. These benefits are largely attributed to the bioactive compounds found in rosemary, which contribute to overall hen health, optimize metabolic function, and facilitate better nutrient absorption and feed efficiency. This systematic review and meta-analysis investigated the effects of rosemary supplementation on laying hens' productive performance and egg quality traits. An extensive search across multiple databases yields 18 eligible studies that met predefined criteria, focusing on metrics including egg production rate, egg weight, egg mass, egg index, shell thickness, yolk color, yolk index, Haugh unit, yolk/albumin quantity, and shell strength. Data extraction and analysis were conducted, calculating unstandardized mean differences and confidence intervals to assess the effect sizes. Significant improvements were observed in egg production rate, egg weight, shell thickness, yolk color, Haugh unit, and shell strength (P < 0.05). Other parameters such as egg mass, yolk/albumin quantity, and yolk index showed no significant changes. Subgroup analyses indicated that the duration of rosemary supplementation (greater than 8 weeks) and the powdered form of rosemary were particularly effective in enhancing egg production and quality traits. These findings suggest that rosemary supplementation can positively influence laying hen productivity and egg quality, highlighting its potential as a natural feed additive in poultry nutrition. However, the study also noted varying heterogeneity and potential publication bias, necessitating cautious interpretation of the results. |
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| ISSN: | 2666-1543 |