ArticleIranian journal of veterinary research2025
The effect of supplementing rosemary essential oil and selenium yeast in the diet on sperm parameters and antioxidant activity of semen in older broiler breeder roosters.
Article in Iranian journal of veterinary research, 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
Background: Aging is associated with various physiological changes that lead to oxidative stress and the production of reactive oxygen species (ROS), negatively affecting sperm structure and function. Aims: This study aimed to investigate the impact of incorporating rosemary essential oil and selenium yeast into the diet on sperm quality parameters, antioxidant enzyme activity, and lipid peroxidation rates of semen in aged broiler breeder roosters. Methods: Thirty-six 57-week-old Ross 308 roosters were randomly assigned in a 3×2 factorial arrangement, in six treatments with six replications. The treatments included three levels of rosemary essential oil (0, 100, and 200 mg/kg) and two levels of selenium yeast (0 and 0.3 mg/kg) for 7 weeks. Sperm parameters, antioxidant enzyme activities, and lipid peroxidation levels in seminal plasma were evaluated. Results: The results showed significant effects of rosemary essential oil and selenium yeast on sperm parameters. 100 mg rosemary essential oil plus 0.3 mg selenium yeast/kg of diet showed the most significant improvement in sperm quality (P<0.05). However, there was no significant difference in sperm morphological abnormalities among the treatments. Additionally, seminal plasma antioxidant enzyme activities, including glutathione peroxidase (GPx), superoxide dismutase (SOD), catalase (CAT), and total antioxidant capacity (TAC) significantly increased and malondialdehyde (MDA) decreased, particularly in the treatment containing 100 mg rosemary essential oil plus 0.3 mg selenium yeast/kg diet (P<0.05). Conclusion: Overall, 100 mg/kg rosemary essential oil combined with 0.3 mg/kg selenium yeast in the diet is recommended for aged broiler breeder roosters to enhance their reproductive function.
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