20.500.12556/RUL-182214 Nutraceutical-based preventive program as a tool to improve health status in broiler parent flocks Nutraceutical-based supplements are increasingly explored as tools to support poultry health and productivity, yet evidence for their use within integrated, multi component preventive programs, especially in commercial broiler breeder operations, remains limited. This study retrospectively evaluated a nutraceutical based preventive program developed by the Veterinary Clinic of Perutnina Ptuj, Slovenia. The program aimed at reducing disease occurrence and supporting reproductive performance in commercial Ross 308 broiler parent flocks. The program, applied throughout rearing and production phase, combined vitamins, minerals, probiotics, lactic acid, and hepatoprotectors administered at defined stages of the production cycle. Routinely collected records from 44 commercial flocks monitored between 2017 and 2023 were analyzed. Production parameters (egg production, hatching eggs, cumulative hatchability, animal loss) and health related indicators (veterinarian prescribed antibacterial and anticoccidial treatments) were compared across three temporal periods: before implementation, an interim adjustment period, and after full implementation. Statistical analyses included linear mixed effects models for normally distributed variables and generalized linear mixed models for non-normally distributed data. Following program implementation, the number of antibacterial treatments administered after 19 weeks of age decreased drastically, while antibacterial treatments during rearing and anticoccidial interventions remained unchanged. Animal loss peaked during the interim period but later stabilized, with no significant differences observed for other production related parameters. Overall, the findings indicate that this multi component nutraceutical-based program may be associated with enhanced disease resilience under commercial conditions. However, the retrospective design, reliance on routine farm records, absence of a control group, and potential confounding factors limit causal interpretation. broiler breeders nutraceuticals poultry health poultry welfare preventive medicine perutnina pitovni piščanci plemenska jata prehrana živali nutracevtika zdravje živali true false true Angleški jezik Slovenski jezik Članek v reviji 2026-05-04 09:20:57 2026-05-04 09:21:06 2026-05-05 04:44:14 0000-00-00 00:00:00 2026 0 0 8 str. [article no.] 1789705 Vol. 7 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2026-04-30 636.5.084/.087 2673-6225 10.3389/fanim.2026.1789705 276862723 RAZ_Gobbo_Elena_2026.pdf RAZ_Gobbo_Elena_2026.pdf 1 BF6A8F9E187C39CA75F69EABFB7C99B9 a4a27781639012c6a532a42c1e4c39d6e41e7a7c423c4f80ad8aceca21873d31 a14a15d0-4789-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=233260 https://www.frontiersin.org/journals/animal-science/articles/10.3389/fanim.2026.1789705/full 1 8a37daeb-4789-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=233259 Biotehniška fakulteta 0 0 0