Sex-Reversal Effect of Dietary Aloe vera (Liliaceae) on Genetically Improved Farmed Nile Tilapia Fry

文献类型： 外文期刊

第一作者： Gabriel, Ndakalimwe Naftal

作者： Gabriel, Ndakalimwe Naftal;Qiang, Jun;Ma, Xin Yu;He, Jie;Xu, Pao;Qiang, Jun;He, Jie;Xu, Pao;Gabriel, Ndakalimwe Naftal;Omoregie, Edosa

作者机构：

期刊名称：NORTH AMERICAN JOURNAL OF AQUACULTURE （ 影响因子：1.717； 五年影响因子：1.664 ）

ISSN： 1522-2055

年卷期： 2017 年 79 卷 1 期

页码：

收录情况： SCI

摘要： We evaluated the hypothesis that administering dietary Aloe vera to sexually undifferentiated fry of genetically improved farmed Nile Tilapia Oreochromis niloticus for 30 d would affect their sex ratio. Five experimental treatments were designed, including a control and 100% A. vera powder incorporated into the feed at 0.5, 1.0, 2.0, and 4.0%. After 30 d of feeding, the experimental diets were replaced with a commercial diet, which was administered to the fish for another 42 d to attain the size at which sex determination was possible. Based on logistic regression analysis, an increase in the A. vera inclusion level from 1.0% to 4.0% resulted in a significantly greater percentage of males compared to the control and the 0.5% A. vera inclusion level, with the 4.0% A. vera group presenting potent masculinization effects (67.62% male). However, the survival percentage among fish that received 4.0% A. vera was significantly lower than survival in the other groups. The present results indicate that A. vera extracts have the potential to be used as sex-reversal agents in Nile Tilapia culture, but additional studies are necessary.

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