ArticleVeterinary and animal science2026
Dietary sunflower hulls and protein levels affect performance, gut health, and litter quality in broiler chickens.
Article in Veterinary and animal 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
This study evaluated the effects of different dietary levels of sunflower hulls (SFH) as an insoluble fiber source on growth performance, nutrient digestibility, intestinal morphology, cecal microbial populations, litter quality, and digesta transit time in broiler chickens fed varying levels of crude protein (CP). A total of 360 one-day-old broiler chicks were randomly assigned to a 3 × 2 factorial design comprising three SFH levels (0, 20, and 40 g/kg) and two CP levels (normal and 10% reduced). Broilers fed diets containing 40 g/kg SFH combined with normal CP exhibited the most favorable feed conversion ratio (FCR), whereas the poorest FCR was observed in those reared on the fiber-free, low-CP diets. Dietary inclusion of SFH progressively enhanced the apparent ileal digestibility (AID) of nitrogen, organic matter, and ether extract. Furthermore, improvements in villus height, width, and surface area in both the duodenum and jejunum were observed, as levels of SFH increased. These morphological advancements were accompanied by a significant shift in the cecal ecosystem, characterized by an increased population of beneficial
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