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Effects of vitamin and mineral supplementation on growth performance, survival, and sex ratio in platyfish (Xiphophorus maculatus)
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Mehdi Adeli *   , Mohammad Soudagar , Siamak Yousefi Siahkalroodi , Mohammad Mazandarani , Ali Hajibeglo |
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Abstract: (174 Views) |
This study investigated the effects of different levels of vitamin and mineral supplementation on growth performance, survival, and sex ratio in platyfish (Xiphophorus maculatus). A total of 600 one-month-old juvenile platyfish obtained from an ornamental fish hatchery were fed four times daily for 20 weeks. The experiment consisted of 10 treatments: an unsupplemented control; three vitamin-supplemented diets containing 1%, 2%, and 3% vitamin supplement; three mineral-supplemented diets containing 1%, 2%, and 3% mineral supplement; and three diets supplemented with combined vitamin and mineral supplements at respective inclusion levels of 1% + 1%, 2% + 2%, and 3% + 3%. Fish were biweekly sampled for biometric measurements to evaluate growth performance. The results indicated significant differences between the experimental treatments and the control in growth indices, including final body weight (FW), weight gain (WG), specific growth rate (SGR), and feed conversion ratio (FCR). The treatment containing 3% vitamin supplement and 3% mineral supplement resulted in the highest weight gain and specific growth rate and the lowest feed conversion ratio. Furthermore, this treatment differed significantly from the control in sex ratio, survival, time to first parturition, and synchrony of parturition. As the level of combined supplementation increased, the proportion of males decreased, whereas the proportion of females increased. Overall, the findings suggest that combined vitamin and mineral supplementation, particularly at the highest tested inclusion level, can influence growth performance, survival, and sex ratio in platyfish (p<0.05).
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| Keywords: Platyfish, Vitamin supplementation, Mineral supplementation, Growth performance, Survival, Sex ratio |
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Full-Text [PDF 566 kb]
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Type of Study: Research |
Subject:
Special
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