This study was conducted to determine the effect of probiotics, Lactobacillus acidophilus on the growth parameters of Mugil sp. fish, their approximate biochemical composition and the environmental conditions of their culture for 12 weeks in floating cages. Six hundreds of fish were randomly distributed in two groups of 100 fish in each floating cages (length of 1 m, width of 1 m, depth of 2 m) with an initial weight of 39.5± 0.2 g. The first group was fed with the control diet and the second group with probiotics diet. The results showed significant differences (P <0.05) between fish fed on probiotics diet and fish fed on control diet in weight gain (WG), relative growth rate (RGR) and food conversion rate (FCR). The weight gain in the probiotics group was 18.3 g, while in the control group was 12.2 g. There was no significant difference (P> 0.05) for the specific growth rate (SGR). The survival rate (SR%) was achieved at 100% in both groups. Also, there was a significant difference for the approximate composition of fish protein, fat and ash between the probiotics group and control group. From these results, it can be concluded that the probiotics group of Mugil sp. was better with 15.7% than the control group regarding to growth. Also, WG, RGR and FCR were better in the probiotics group than control group. The environmental indicators revealed that culture waters exposed to organic pollutants have led to a decline in the ratio of the concentration of dissolved oxygen, affecting the growth of fish negatively.
Bin Breek, Balqees Saleh; Al-Dohail, Mohammed Abdullah; and Yahya, Khaled Salem
"Effects of Probiotics Supplementation with Lactobacillus SP. Bacteria on Growth and Survival Rate of Cultured Mullet Fish (Mugil sp.) in Floating Cages,"
Hadhramout University Journal of Natural & Applied Sciences: Vol. 18:
1, Article 9.
Available at: https://digitalcommons.aaru.edu.jo/huj_nas/vol18/iss1/9