ArticleAnimals : an open access journal from MDPI2026
Effects of Pre-Slaughter Dietary Supplementation with a Phytogenic Additive Containing
Article in Animals : an open access journal from MDPI, 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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Funding
Abstract
backgroundThe final days before slaughter represent one of the most stressful periods in commercial broiler production, during which acute stress stimulates endocrine, oxidative, and inflammatory responses that may compromise animal welfare and slaughter outcomes. This study evaluated the effects of short-term dietary supplementation with a phytogenic additive containing
methodsA total of 106,240 Ross 308 broilers were assigned to either a control group or a PSPA-supplemented group (1 kg/t) during the final five days before slaughter (days 38-42). Carcass characteristics, breast muscle and liver composition, serum corticosterone, inflammatory cytokines, oxidative stress biomarkers, and bone morphology using three-dimensional geometric morphometrics were evaluated.
resultsPSPA supplementation significantly reduced serum IL-1β, IL-6, TNF-α, corticosterone, total oxidant status, and oxidative stress index, while increasing IL-10 concentrations (
conclusionsShort-term PSPA supplementation improved physiological resilience by attenuating corticosterone secretion, oxidative stress, and inflammatory responses before slaughter. Although carcass quality was not significantly altered, the favorable numerical trends and improved physiological biomarkers suggest that targeted preslaughter phytogenic supplementation may represent a practical nutritional strategy to mitigate preslaughter stress in broiler chickens. Longer-term studies are warranted to determine whether these physiological benefits translate into improvements in bone characteristics and slaughter outcomes.
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