Effects of Vitex agnus-castus extract on reproductive performance, growth and survival in Xiphophorus helleri

Document Type : Original Article

Authors

1 Department of Aquaculture, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.

2 Iranian Fisheries Science Research Institute, Tehran, Iran.

3 Department of Fisheries, Faculty of Agriculture Science and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Iran.

Abstract

The present research studied the effect of different levels of ethanolic extract of Vitex agnus-castus on reproductive performance of Xiphophorus helleri. Productive fish fed diets containing different levels of Vitex agnus-castus extract, 0 (control or treatment 1), 750 (treatment 2), 1000 (treatment 3) and 1250 (treatment 4) mg/kg diet for 2 months. Fish fed diet containing of 1250 mg of Vitex agnus-castus extract significantly showed higher final weight, final length, weight gain index, weight gain and specific growth rate in comparison with control group (P<0.05). The highest relative fecundity and gonadosomatic index were observed in treatment 3. The results also showed that the highest ratio of larvae to female was observed in treatment 4 (P<0.05). It can be concluded that using of 1250 mg Vitex agnus-castus per kilogram diet can improve the growth and reproductive performance of X. helleri.

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