Comparative Analysis Of Growth And Survival Of Aeromonas Hydrophila Challenged Poecilia Sphenops Fed With Herbal Extract Diet.

Abstract

The objective of the current study is to compare the growth and survival rate of  Aeromonas hydrophila challenged Poecilia sphenops fed with Psidium guajava leaves isopropyl alcohol extract and Azadirachta indica isopropyl alcohol extract supplemented diet for 30 days. The Poecilia sphenops fishes weighing an average of 2.85 ± 0.06 g were fed diets with varying percentages of P. guajava leaf -isopropyl alcohol extracts (GD1-5%, GD2- 10%, GD3- 15%, GD4- 20%, and GD5- 25%) and A. indica leaf – isopropyl alcohol extracts (ND1-5%, ND2- 10%, ND3- 15%, ND4- 20%, and ND5- 25%)  The growth parameters such weight gain and specific growth rate (SGR) of the molly fish (P. sphenops) were assessed after 30 days of herbal diet feeding. After 30 days fishes were challenged with fresh water bacteria A. hydrophila. This 10-days challenge test was conducted to determine the survival rate of bacterial challenged fishes which were fed with herbal diets. The results were comparatively analysed, from that we found that the molly fishes (P. sphenops) of GD5 diet group showed higher weight gain (1.56 ± 0.02 g) and specific growth rate [SGR] (1.46 %) than the weight gain (1.25 ± 0.03 g) and specific growth rate [SGR] (1.23 %) of molly fishes (P. sphenops) of ND5 diet group. The molly fishes of GD5 diet fed group showed maximum survival rate of 90 % than the survival rate 70 % of molly fishes (P. sphenops) of ND5 diet fed group. According to our findings, the molly fish P. sphenops fed with P. guajava leaves isopropyl alcohol extract supplemented diet showed higher growth performance and survival rate than the molly fishes fed with A. indica leaves isopropyl alcohol extract supplemented diet.