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Effect of vitamin and mineral supplements on growth,* survival, and sex change indices of viviparous platy fish (Xiphophorus maculatus)
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Mehdi Adeli *   , Mohammad Sudagar , Siamak Yousefi , Mohamamd Mazandarani , Ali Hajibaglu |
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Abstract: (15 Views) |
in this study, the effects of mineral and vitamin supplements on growth, survival and sex composition in platy fish (Xiphophorus maculatus) were tested. For this purpose, 600 one-month-old platy fish fry were obtained from an ornamental fish breeding and breeding center, which after initial adaptation, were fed 4 times a day for 20 weeks. Treatment 1 was a control without adding mineral and vitamin supplements to the diet and 9 other treatment groups were added with mineral and vitamin supplements to the diet in a specific ratio and amount, including:Treatment 2 (with 1% vitamin content), Treatment 3 (with 2% vitamin content), Treatment 4 (with 3% vitamin content), Treatment 5 (with 1% mineral content), Treatment 6 (with 2% mineral content), Treatment 7 (with 3% mineral content), Treatment 8 (with 1% and 1% vitamin and mineral content), Treatment 9 (with 2% and 2% vitamin and mineral content) and Treatment 10 (with 3% and 3% vitamin and mineral content) were added to the diet.In order to evaluate growth factors, fish were bioassayed every 2 weeks. The results obtained from sex ratio, survival rate, time to first live birth and live birth synchrony in treatment 10 showed significant differences compared to the control treatment. A significant difference in sex ratio was observed between the control treatment and treatment 10; specifically, as the levelof mineral and vitamin supplementation increased, the percentage of male fish decreased while the percentage of female fish increased. Also, the results of growth indices showed that there was a significant improvement in the final weight (FW), body weight gain (WG) and specific growth rate (SGR) in the treatments containing vitamin and mineral supplements compared to the control treatment. Also, the lowest feed conversion ratio (FCR) was observed in treatment 10 with the addition of a combination of 3% vitamin supplement and 3% mineral supplement to the diet, and the highest weight gain (WG) and specific growth rate (SGR) were observed in treatment 10, which showed a significant difference with other treatments (P<0.05).
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| Keywords: Platy fish, mineral supplement, vitamin supplement, survival rate, sex ration |
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Type of Study: Research |
Subject:
Special
Received: 2026/09/30 | Accepted: 2026/10/24 | Published: 2026/10/24
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