Preliminary study to evaluate the efficacy of bambara groundnut (Vigna subterranea(L.) Verdc.) meal as the dietary carbohydrate source in nile tilapia, Oreochromis niloticus

Abstract

The present experiment was conducted to evaluate the effects of bambara groundnut meal (BGM) as the dietary carbohydrate source and as an alternative of dietary wheat flour in nile tilapia, Oreochromis niloticus. Results from the nutrient profile analysis of various carbohydrate ingredients showed, higher crude protein and lipid content in bambara groundnut meal followed by wheat flour, dextrin and corn starch. Whereas, dextrin was found to content lower amount of moisture compared to bambara groundnut meal, wheat flour and dextrin. Four isonitrogeonus and isocaloric diets were formulated to replace wheat flour using bambara groundnut meal at 0 (CON), 25 (BGM 25 ), 50 (BGM 50 ), and 100% (BGM 100 ). Nile tilapia fish individual initial weight averaging 20±0.5 g (mean ± standard deviation) were fed one of the four experimental diets at 2~3% of body weight per day for eight weeks. At the end of the experiment, there were no significant differences in the average weight gain (WG) and specific growth rate (SGR) among the group of fish fed Control, BGM 25 and BGM 50 diets (P < 0.05). However, WG and SGR of fish fed BGM 100 diet was significantly lower than that of fish fed BGM 25 diet (P < 0.05). Crude protein and crude lipid content in the fish whole body proximate composition was not much affected by the BGM inclusion as a carbohydrate source. Therefore, the overall observations from the current experiment may suggest the potential of bambara groundnut meal as the carbohydrate ingredient in omnivorous fish diets. The optimum replacement level of wheat flour using bambara groundnut meal could be greater than 50 but less than 100% of diet in nile tilapia, Oreochromis niloticus.

Comparative Phytochemical Analysis of Bambara Groundnut (Vigna subterranea) and others Vigna spp. with Respect to its Nutritional, Antinutritional and Antioxidant Properties

“…It is also indicating the samples is high in micro and macro elements [6]. The protein content in the three samples was in the range of and kindly relevant for those people who cannot afford an expensive carbohydrate source [20].…”

The potential of Bambara groundnut: An analysis for the People’s Republic of China

“…All the other scientific efforts such as development of products for food, feed, and energy can be done simultaneously using the material that is developed through agronomic trials. Such consorted efforts will only shorten the amount of time that is required to develop scientific insights surrounding a new crop at a new environment (Hussin et al, 2020; Katya et al, 2017; Tan et al, 2020).…”