Advances in Animal and Veterinary Sciences

Research Article
Adv. Anim. Vet. Sci. 9(9): 1489-1497
View Full HTML
Download PDF

Riya Ann Samuel, Suravi Sasmita Dash, Riyaz Ali.L, Kuppusamy Alagesan Paari*

Department of Life sciences, CHRIST (Deemed to be University), Bangalore, Karnataka, India 560029.

Abstract | A comparative analysis on the effects of plant based (PD), animal based (AD) and probiotic based (PrD) diets on growth performance in Danio rerio was investigated. Different diets were administered as either single or combination diet (CD) containing PD, AD and PrD exhibited varying effects on growth and development. The probiotic bacteria isolated from Indian prawn (Penaeus indicus) was identified as Bacillus sp using 16s rRNA sequencing and phylogenetic analysis. The isolate was characterized by evaluating its ability to survive at different pH, temperature and simulated artificial gastric environment and was further subjected to varying concentrations of salt and organic solvents. Antibiofilm activity of the isolate was evaluated against fish pathogens; Vibrio harveyi (96.1±2.7%), Escherichia coli (96.2±1.5 %,), Pseudomonas aeruginosa (95.3±3.0%) and Staphylococcus aureus (96.7±2.8%). After the end of trail period, growth parameters were evaluated. Weight gain percentage was significantly higher in PrD (15.7±0.08 %) compared to other treatments. (p<0.05). Feed conversion ratio was least in CD (0.35±0.09) and feed efficiency (2.7±0.08) in CD was numerically high compared to other treatments. (p>0.05).The study promotes sustainable aquaculture by the use of alternative aqua feeds derived from plant or animal based sources. The study also highlights the usage of probiotics in improving growth performance, disease resistance in aquatic animals.

Keywords | Alternative feed, Feed formulation, Growth performance, Probiotics, Bacillus sp.