Open AccessEffect of probiotic Bacillus spp.-supplemented feed on the growth, length-weight relationship, and condition factor of Nile tilapia (Oreochromis niloticus)
Author(s) -
Jaypee S. Samson
Publication year - 2022
Publication title -
journal of experimental biology and agricultural sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.108
H-Index - 2
ISSN - 2320-8694
DOI - 10.18006/2022.10(1).90.96
Subject(s) - oreochromis , nile tilapia , probiotic , zoology , biology , body weight , feed conversion ratio , veterinary medicine , tilapia , weight gain , fish <actinopterygii> , food science , fishery , bacteria , endocrinology , medicine , genetics
This study was carried out to evaluate the effect of two probiotic Bacillus spp. (RM10 and BFAR9) on the growth, length-weight relationship (LWR), and condition factor (k) of Nile tilapia (Oreochromis niloticus). For this, one hundred thirty-five fingerlings (1.12±0.08 g weight and 1.26±0.15 cm length) were divided into three groups (Control, RM10, and BFAR9) and distributed into nine circular concrete tanks. The fish were fed with commercial (control) and Bacillus spp. supplemented diets at 5% of body weight for 56 days. The results of the study revealed better (P<0.05) growth concerning average body weight (ABW - 17.12±0.71g), specific growth rate (SGR - 4.89±0.22 g·day-1), absolute growth (AG - 16.02±0.78 g), and feed conversion ratio (FCR - 1.31±0.09) in the group fed with Bacillus sp. RM10 as compared to the control (ABW- 13.25±2.34g; SGR - 4.41±0.17g·day-1; AG - 12.13±2.25g; FCR - 1.62±0.11). The LWR in all experimental treatments showed a significant correlation (P<0.05) with an R2 value of 0.988, 0.966, and 0.979 for Control, RM10, and BFAR9, respectively. The k value revealed that all treatments are in good condition as k value is greater than 1 (1.913, 2.038, and 1.896 for control, RM10, and BFAR9 respectively). The result of the current study revealed that application of Bacillus sp. RM10 improves the growth and feed utilization in Nile tilapia.