ArticleTropical animal health and production2025
Assessment of kernel oil of Quercus baloot as a natural feed additive for rabbit growth, blood profile, meat quality, and intestinal histomorphology.
Article in Tropical animal health and production, 2025. 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
Kernel oil (KO) of Quercus baloot was investigated for its impacts on rabbit growth, intestinal histomorphology, meat quality, and lipid profile. A total of 45 indigenous rabbit bucks (42 ± 2 days) were divided randomly into 5 groups based on randomized complete block design to receive 5 test diets. The control group bucks were provided a total mixed ration as a basal diet without KO (negative control, NC), and for the experimental groups (KO250, KO500, and KO750), the basal diets were supplemented with KO at 250, 500, and 750 mg/kg diet. The fifth group of rabbits was fed a basal diet supplemented with yeast Saccharomyces cerevisiae (2 g/kg diet; positive control, PC). The results revealed that rabbits fed with KO750 and PC diets showed significantly higher (p < 0.05) total and average daily weight gain. Rabbits fed on KO250 and KO500 diets had the highest (p < 0.05) feed intake. However, the feed conversion ratio (FCR) improved (p < 0.05) in rabbits fed PC-based diets, followed by KO750. The health risk index was high in rabbits fed on the NC group. Dressed weight of rabbits was significantly higher (p < 0.05) in all supplemented groups compared to the NC group. Cholesterol levels were significantly reduced (p < 0.05) in the KO500 and KO750 groups. Serum triglyceride levels were reduced (p < 0.05) in all KO-supplemented groups. High-density lipoprotein levels increased and low-density lipoprotein levels decreased in rabbits fed all KO-supplemented groups. In the ileum, both the height of the villi increased (p < 0.05) and the crypt depth reduced (p < 0.05) in the PC and KO750 groups. The study indicates that rabbit development, health, and lipid profile may all benefit with dietary supplementation of KO from Quercus baloot. The development of non-antibiotic feed additives in the animal feed sector that support animal growth and health without fostering antibiotic resistance may be impacted by these findings.
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