Effects of Concurrent use of of canola meal and probiotic ( Lactobacillus rhamnosus ) on growth and viability of fish ( Oncorhynchus mykiss )

Partner or live probiotic bacteria as dietary supplements are living through the improvement of intestinal microbial host, provide beneficial effects in animal hosts. Also the amino acid composition of canola meal is as a protein with a similar amino acid protein of fish flour. The aim of this study was to investigate the effect of canola meal and Lactobacillus rhamnosus in a same time on growth and viability of children of rainbow trout, was performed. This experiment, in four groups of 265 rainbow trout larvae with an initial weight of 5 ± mg100 each Group was performed. Group (1) include groups receiving 0.10 g / kg Probiotic Lactobacillus rhamnosus and 25% canola meal, (2) the groups receiving g / kg 0.50 Probiotic Lactobacillus rhamnosus and 50% canola meal, Group 3 the groups receiving 1.5 g / kg Probiotic Lactobacillus rhamnosus and 100% canola meal they were received within 65 days; Group (4)that were controls, they were received only dry food without probiotic Lactobacillus rhamnosus and canola meal for 65 days'. The obtained results was evaluated with SPSS17 software (P ≤ 0.05) . In different amounts of Lactobacillus rhamnosus probiotics canola meal, fish larvae fed with diet containing 0.50 g per kg dry foods and probiotics L a c t o b a c ill u s r h a m n o s u s and 50% canola meal,had more growth than the control and experimental groups(P≤0.05) Also viability of fish larvae fed with probiotics Lactobacillus rhamnosus and canola meal was higher than the control group (P ≤ 0.05).