Utilization of electron beam irradiated Jatropha kernel meal in the diet ofLabeo rohita(Hamilton, 1822) fingerlings

Abstract

Defatted Jatropha kernel meal (DJKM) was irradiated through electron beam radiation at 25 kGy (IJKM). After irradiation, PEs and phytate were decreased by 36.67% and 55.27%, respectively, with slight reduction in total hydrolysed amino acids in IJKM. A 45‐day feeding trial was conducted to evaluate the utilization of irradiated Jatropha kernel meal (IJKM) in the diet of rohu (Labeo rohita) fingerlings. Five isonitrogenous (300 g/kg CP) and isoenergetic (15 MJ/kg GE) diets such as T0 (control, without IJKM), T5 (50 g/kg IJKM), T10 (100 g/kg IJKM), T15 (150 g/kg IJKM) and T20 (200 g/kg IJKM) were prepared and fed to fish of respective treatments. Fish fed diets containing T15 and T20 groups exhibited significantly lower (p < .05) weight gain, FCE, PER, ANPU, HSI, ISI, survival rate, nutrient and energy digestibility, than the other groups. Fish of higher IJKM fed groups (T15 and T20) also showed lower muscle moisture, protein, ash and higher muscle lipid content. The liver catalase and SOD activities significantly decreased in the higher IJKM fed groups. It is concluded that IJKM (irradiated by 25 kGy electron beam) can be incorporated up to 100 g/kg in carp feed with the replacement of 33% soybean meal and 28% ground nut oil cake without compromising growth performances of Labeo rohita.

Dietary taurine supplementation to a plant protein source‐based diet improved the growth and intestinal immune function of young grass carp (Ctenopharyngodon idella)

“…The intestinal length (IL) and intestinal weight (IW) were used to calculate intestinal length index (ILI) and intestinal somatic index (ISI) according to Jiang, Lin, Yang, Jiang, and Zhou (). The survival rate (SR) was calculated according to a previous study (Sanap et al, ).…”

“…The intestinal length (IL) and intestinal weight (IW) were used to calculate intestinal length index (ILI) and intestinal somatic index (ISI) according toJiang, Lin, Yang, Jiang, and Zhou (2009). The survival rate (SR) was calculated according to a previous study(Sanap et al, 2018).All the results were expressed as mean ± standard error (SD), and transformed if necessary after testing assumptions of normality and homogeneity of variance, and subjected to an analysis of variance (ANOVA) using the software SPSS18.0 (SPSS Inc., Chicago, IL, USA). Mean differences were considered significant at a p < 0.05.…”

Karanj protein isolate prepared from karanj seed cake: Effect on growth, body composition and physiometabolic responses inLabeo rohitafingerlings

“…One of the unexplored groups of protein sources is the non‐edible oilseeds. In the last few years, a significant number of protein‐rich non‐edible seed products have been tested in fish or shrimp feed either as partial or complete replacer of fishmeal or soybean meal (Fawole et al, ; Harter et al, ; Kumar, Makkar, & Becker, ; Phulia, Sardar, Sahu, Fawole, et al, ; Phulia, Sardar, Sahu, Sanap, et al, ; Phulia et al, ; Sanap et al, ; Shamna et al, , ).…”

“…However, the use of soybean meal in aquafeed may not be sustainable in the future due to its high demand and competition for human use and terrestrial animal feed sectors. As a result, the price of SBM has escalated sharply (Azaza et al, ; FAO, ; Phulia, Sardar, Sahu, Fawole, et al, ; Phulia et al, ; Sanap et al, ; Shamna et al, , ) and is expected to remain high in future. Moreover, prices of the conventional feedstuffs such as groundnut oil cake and mustard oil cake have been increased to a level that their inclusion in aquafeed at a required quantity makes the feed‐based aquaculture less profitable (Njidda & Isidahomen, ; Phulia, Sardar, Sahu, Sanap, et al, ; Sanap et al, ).…”

“…As a result, the price of SBM has escalated sharply (Azaza et al, ; FAO, ; Phulia, Sardar, Sahu, Fawole, et al, ; Phulia et al, ; Sanap et al, ; Shamna et al, , ) and is expected to remain high in future. Moreover, prices of the conventional feedstuffs such as groundnut oil cake and mustard oil cake have been increased to a level that their inclusion in aquafeed at a required quantity makes the feed‐based aquaculture less profitable (Njidda & Isidahomen, ; Phulia, Sardar, Sahu, Sanap, et al, ; Sanap et al, ). Therefore, for making the feed‐based intensified aquaculture economically sustainable, it becomes very imperative to intensify efforts in the search for cheaper, abundant and locally available alternatives with little or no competition with human food and terrestrial animal feed sectors (Maiti et al, ; Odunsi, Akande, Yusuph, & Salami, ).…”