Growth, Survival and Gut Microbial Load of Rainbow Trout (Onchorhynchus mykiss) Fry Given Diet Supplemented with Probiotic during the Two Months of First Feeding

It does not appear that higher levels of probiotics improved results and suitable doze of probiotic should be assessed before application in large scale to prevent any undesired effects, but it may show that probiotic stimulates digestive development and enzymatic activity in fish.