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<p>Kernel oil (KO) of <i>Quercus baloot</i> 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&#xa0;mg/kg diet. The fifth group of rabbits was fed a basal diet supplemented with yeast <i>Saccharomyces cerevisiae</i> (2&#xa0;g/kg diet; positive control, PC). The results revealed that rabbits fed with KO750 and PC diets showed significantly higher (<i>p</i> &lt; 0.05) total and average daily weight gain. Rabbits fed on KO250 and KO500 diets had the highest (<i>p</i> &lt; 0.05) feed intake. However, the feed conversion ratio (FCR) improved (<i>p</i> &lt; 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 (<i>p</i> &lt; 0.05) in all supplemented groups compared to the NC group. Cholesterol levels were significantly reduced (<i>p</i> &lt; 0.05) in the KO500 and KO750 groups. Serum triglyceride levels were reduced (<i>p</i> &lt; 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 (<i>p</i> &lt; 0.05) and the crypt depth reduced (<i>p</i> &lt; 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 <i>Quercus baloot</i>. 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.</p>

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Assessment of kernel oil of Quercus baloot as a natural feed additive for rabbit growth, blood profile, meat quality, and intestinal histomorphology

  • 期刊论文

  • 发表日期：

    2025年12月23日

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  • Salma Rubbi,
  • Kamran Khan,
  • Ziaul Islam,
  • Imran Khan,
  • Abid Ullah

摘要

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.