Evaluation of graded levels of fermented soybean meal inclusion with probiotics supplementation on growth and biochemical indices of Labeo rohita
Nudrat Aslam, Abdul Mateen, Muhammad Naveed, Dureshahwar, Uzma Ramzan, Habeeb M. Al‐Solami, Abdullah G. Alghamdi
Abstract
Finding new sustainable protein sources is a major driver in the aquaculture industry to lessen the reliance on fishmeal as a main protein source in fish feed. This research evaluated the effect of fish meal (FM) replacement with fermented soybean meal (FSBM) and probiotics on growth response, enzymatic indices and immunity of Labeo rohita . Five diets replaced 0, 25, 50, 75, and 100% of fish meal with fermented soybean meal termed as T 0 , T 1 , T 2 , T 3 , and T 4 respectively. In the present study, Lactobacillus plantarum was used to ferment soybean meal. Experimental feed was given to triplicate groups of L. rohita fingerlings (8.2 ± 0.1) twice daily for 120 days. The growth performance of fish (weight gain, length gain, FCR and SGR) was measured weekly and statistically significant ( p < 0.05) results were observed. Fish in T 0, T 1 and T 2 groups exhibited increased weight gain and reduced feed conversion ratio. Protease activity increased significantly in T 1 and T 2 compared to other experimental groups. WBCs and catalase activity increased significantly ( p < 0.05) in T 0, T 1 and T 2. These results suggested that fermented soybean meal could substitute 50% fishmeal without affecting the growth, immunity and enzymatic indices of L. rohita .