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<p>This study aimed to determine the effects of 3%, 7%, 11%, and 15% red pepper (<i>Capsicum annuum</i>) supplementation to diet on antioxidant, oocyte development and disease resistance against <i>Aeromonas hydrophila</i> A210 of jewel cichlid (<i>Hemichromis guttatus</i>). Fifteen fish (3.43&#xa0;g ± 0.03) were stocked to each aquarium and fed ad libitum for 90 days. At the end of the trial, the number of mature oocytes increased by adding 11% and 15% red pepper to the diets. (<i>P</i> &lt; 0.05). Fish fed diets containing 11% and 15% red pepper showed a significant rise in superoxide dismutase (SOD) activity (<i>P</i> &lt; 0.05). In addition, fish fed diets containing 3% and 11% red pepper showed disease resistance against <i>A. hydrophila</i> in jewel cichlids. After challenge with <i>A. hydrophila</i>, cumulative mortality rates in fish fed with diets containing 3%, 7%, and 11% red pepper were significantly reduced compared to the control group (<i>P</i> &lt; 0.05). Therefore, using 11% red pepper is appropriate to provide resistance against <i>A. hydrophila</i> infections, increase fertility and antioxidant levels in jewel cichlids <i>(Hemichromis guttatus</i>).</p>

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Effect of Capsicum annuum on antioxidant activity, oocyte development and resistance against Aeromonas hydrophila in jewel cichlid (Hemichromis guttatus)

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月31日

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  • Nalan Ozgur Yigit,
  • Secil Metin,
  • Behire Isıl Didinen,
  • Ozlem Ozmen,
  • Rahime Aslankoc

摘要

This study aimed to determine the effects of 3%, 7%, 11%, and 15% red pepper (Capsicum annuum) supplementation to diet on antioxidant, oocyte development and disease resistance against Aeromonas hydrophila A210 of jewel cichlid (Hemichromis guttatus). Fifteen fish (3.43 g ± 0.03) were stocked to each aquarium and fed ad libitum for 90 days. At the end of the trial, the number of mature oocytes increased by adding 11% and 15% red pepper to the diets. (P < 0.05). Fish fed diets containing 11% and 15% red pepper showed a significant rise in superoxide dismutase (SOD) activity (P < 0.05). In addition, fish fed diets containing 3% and 11% red pepper showed disease resistance against A. hydrophila in jewel cichlids. After challenge with A. hydrophila, cumulative mortality rates in fish fed with diets containing 3%, 7%, and 11% red pepper were significantly reduced compared to the control group (P < 0.05). Therefore, using 11% red pepper is appropriate to provide resistance against A. hydrophila infections, increase fertility and antioxidant levels in jewel cichlids (Hemichromis guttatus).