Effect of Lactobacillus plantarum (KC426951) bacteria isolated from the intestine of rainbow trout Guilan on growth factors, carcass composition and the intestinal bacterial flora of rainbow trout (Oncorhynchus mykiss) fingerling

Ghaljaei Fard, Afshin

Effect of Lactobacillus plantarum (KC426951) bacteria isolated from the intestine of rainbow trout Guilan on growth factors, carcass composition and the intestinal bacterial flora of rainbow trout (Oncorhynchus mykiss) fingerling

Author

Afshin Ghaljaei fard

Abstract

The present study was conducted to evaluate the effect of Lactobacillus plantarum (KC426951) isolated from the intestine of rainbow trout Guilan on growth factors, carcass composition and the intestinal bacterial flora of rainbow trout (Oncorhynchus mykiss) was conducted. Rainbow trout weighing 3.56±2.24 for 2 weeks were consistent with environmental rearing conditions. Five groups of fish were fed with diets containing 10⁶ (T1), 10⁷ (T2), 10⁸ (T3), 10⁹ (T4), 10¹⁰ (T5) cfu g^-1 of L. plantarum and control group (T6) without diet containing probiotics were fed for 60 days. Results showed that final weight, final length, growth rate, percent weight were gained in treatment 2 the highest and 5 the lowest level in treated. Also, FCR lowest rates in treatment 2 and treatment 5 were accounted for most (p<0.05). The highest total count of lactic acid bacteria were obtained in the intestine of T4(p<0.05). Maximum carcass protein was observed in T4, and low fat content is related to the control treatment (p<0.05). According to the results obtained from the use of Lactobacillus plantarum could be considered as a positive factor for the improvement of the intestinal bacterial flora, growth performance and carcass composition could be used.

Keywords

Lactobacillus plantarum

Oncorhynchus mykiss

Growth

intestinal bacterial flora

Carcass composition

Lactic acid bacterial