ArticlePoultry science2026
Effect of intermittent folic acid supplementation on production performance and hatchability of Ross 308 broiler breeder flocks.
Article in Poultry science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The present study evaluated the effect of intermittent folic acid supplementation administered via drinking water on the productive and reproductive performance of Ross 308 breeder flocks. The experiment was conducted in two houses (A and B). Birds from house A received folic acid supplementation (10 mg/L for 5 consecutive days at selected ages: 27, 31, 35, 39, 43, 47, 51, and 55 weeks), while the birds from control group (house B) received no supplementation. Egg production, body weight of hens and roosters, egg weight, fertility, hatchability, egg quality traits, and early embryonic mortality were analyzed during the laying period (24-56 weeks of age). The results showed a typical breeder pattern of decreasing egg production and hatchability with advancing age, accompanied by an increase in body weight of birds and egg weight in both groups. Folic acid supplementation resulted in variable and inconsistent effects depending on bird age and the analyzed trait. At specific production weeks, improvements in fertility, hatchability, and early embryonic survival were observed in the supplemented group; however, these effects were not consistently maintained throughout the entire experimental period. Moreover, some egg quality traits, including cracked and deformed eggs, showed an unfavorable or variable response to supplementation in certain weeks. Overall, no uniform effect of intermittent folic acid supplementation was observed across all reproductive and production parameters. While some beneficial effects on selected early embryonic development traits were identified, these responses were age-dependent and inconsistent. However, these effects are age-dependent and not consistently expressed throughout the laying period, indicating the need for further research to determine the optimal dose and supplementation scheme under commercial production conditions.
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