Browsing by Author "Ayodeji A. Adeoye"

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    Dietary supplementation of autolysed yeast enhances growth, liver functionality and intestinal morphology in African catfish
    (Hindawi Limited, 2020-01-23) Ayodeji A. Adeoye; Sam O. Obasa; Femi J. Fawole; Alex H. L. Wan; Simon J. Davies
    A feeding trial was conducted to evaluate the potential of dietary supplementation of autolysed brewer's yeast (AY) on African catfish. The catfish (22.5 ± 1.15 g/fish, 20 fish 33 L/tank) were fed with either of diets (390 g/kg crude protein, 140 g/kg lipid) supplemented with 0, 3, 6 or 10 g/kg AY (n = 3). After 49 days of feeding, the final body weight and metabolic growth rate of the catfish fed 3 g/kg AY (3-AY) diet were higher than those fed the control diet (p < .05). The lowest level (p < .05) of alanine transaminase was detected in the blood of the catfish fed 3-AY diet. The mid-intestinal histology of the catfish revealed no significant difference (p > .05) in intestinal perimeter ratio. However, an elevated (p < .05) abundance of goblet cells and intraepithelial leucocytes were found in the intestine of catfish fed 3, 6 and 10 g/ kg AY diets, with the highest level of abundance recorded in the mid-intestine of the catfish fed 3-AY diet. The results suggest that dietary 3 g/kg autolysed brewer's yeast supplementation improves growth performance of African catfish without deleterious effect on liver functionality and gut morphology.
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    Effects of Dietary Detoxified Jatropha curcas Protein Isolate on Some Physiological Parameters, Intestine, and Liver Morphology of Labeo rohita Fingerlings
    (Central Fisheries Research Institute (SUMAE), 2022-08-24) Femi J. Fawole; Narottam P. Sahu; Nazeemashahul Shamna; Ayodeji A. Adeoye; Vikas Phulia; Benjamin O. Emikpe
    The rising cost of aquafeed ingredients as global aquaculture expands has led researchers to look for other ingredient sources that are not in conflict with human food. In this regard, this study examined the possibility of incorporating detoxified jatropha protein isolate (JP) into the diet of Labeo rohita (rohu) and the effect on the haematology, innate immunity, and organ integrity. A total of 216 fish (3.25 ± 0.02 g/fish) were randomly distributed in 15 tanks and fed for 60 days. The control diet was formulated with soy protein isolate (SP) and gradually replaced with JP at 25%, 50%, 75%, and 100%. The results showed that the red blood cell (RBC) and haemoglobin (Hb) were not significantly influenced (p > 0.05). White blood cell (WBC) counts registered a significant overall effect and followed a quadratic trend (p = 0.001), while the haematocrit value showed overall significant effects (p < 0.05) but no linear or quadratic trends were observed (p > 0.05). Serum lysozyme activity increased with increasing JP level (p = 0.002), but the total immunoglobulin value was significantly higher in fish fed JP 100. The respiratory burst activity, malondialdehyde (MDA) content, superoxide dismutase, and catalase enzyme activities among the various groups did not differ significantly (p > 0.05). Compared to the control, the photomicrograph of the mid-intestine and liver of fish fed a JP-based diet showed no inflammatory or degenerative changes. In summary, the substitution of SP in the diet with JP improved the innate immunity of L. rohita without any negative impact on the blood profile or the histoarchitectural structure of the liver.
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    From waste to feed: Dietary utilisation of bacterial protein from fermentation of agricultural wastes in African catfish (Clarias gariepinus) production and health
    (Elsevier BV, 2021-01) Ayodeji A. Adeoye; Yemi Akegbejo-Samsons; Femi J. Fawole; Paul O. Olatunji; Niall Muller; Alex H.L. Wan; Simon J. Davies
    A feeding trial was conducted to evaluate the effects of replacing fish meal (FM) with bacterial protein (BP) in African catfish (Clarias gariepinus) diets. Four iso‑nitrogenous (369 g kg−1) and isolipidic (142 g kg−1) diets were formulated to replace graded levels (0%, 30%, 60% and 100%) of FM protein resulting in a dietary inclusion level of 0, 27.90, 55.70 and 93.00 g kg−1 BP. Test diets were fed to the catfish (initial weight 18.17 ± 0.25 g fish−1, n = 20) in three replicate tanks. After 56 days of feeding, catfish fed with 30% BP diet had outperformed (P < 0.05) fish that were fed with the control diet (100% FM) in mean weight gain (MWG), percentage weight gain (PWG), specific growth rate (SGR) and metabolic growth rate (MGR). However, the growth response (MWG, PWG, SGR, and MGR) from diets containing 60% and 100% BP did not differ significantly to the dietary control. The whole-body protein (+8%) and lipid (+12%) contents of the catfish fed 30% BP diet were higher (P < 0.05) than no BP inclusion dietary group. The replacement of FM with BP in the catfish diets did not statistically affect the haematological status (P > 0.05). While histological analysis of the catfish mid-intestine showed intact epithelial barriers with extensive mucosal folds extending into the lumen. The intestinal perimeter ratio of fish fed with 30% BP diet was higher (+32%) than those of the dietary control group (P < 0.05), but not differ from 100% BP-fed diet (P > 0.05). Indication of the liver health status was measured through serum aspartate transaminase, alanine transaminase, and alkaline phosphatase activities, and hepatocyte density, which remains statistically unchanged between the dietary groups (P > 0.05). Overall, the results show that BP can replace FM wholly or partly in African catfish (C. gariepinus) diet, without compromising growth performance, haemato-biochemistry, intestinal integrity, or liver functionality.
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    Preliminary assessment of black soldier fly (Hermetia illucens) larval meal in the diet of African catfish (Clarias gariepinus): Impact on growth, body index, and hematological parameters
    (Wiley, 2020-04-27) Ayodeji A. Adeoye; Yemi Akegbejo‐Samsons; Femi J. Fawole; Simon J. Davies
    A study was conducted to evaluate the effect of black soldier fly (Hermetia illucen) larval meal (BSF) in practical diets of African catfish (Clarias gariepinus). Four diets were formulated to contain levels of fishmeal replacement at 0, 25, 50, and 100% with BSF. A total of 360 fingerlings (2.67 ± 0.0 g/fish) were randomly distributed into 12 tanks (30‐L capacity) containing 30 fish each and fed with the respective diet to apparent satiation. After 6 weeks of feeding, growth performance and nutrient utilization indices of the groups fed 25 and 50% BSF diets were not significantly different (p > .05) from the group fed the fishmeal‐based control diet. However, further increase in the replacement of fishmeal with BSF (100%) led to a significant (p < .05) reduction in the growth, feed intake, and protein efficiency ratio of the catfish, whereas body index and survival were not affected. The hematological parameters among the BSF fed groups showed no significant variation (p > .05) compared with the control group. From the current study, it was clear that fishmeal could be replaced with BSF up to 50% without affecting the growth performance, nutrient utilization, survival, and welfare of . C. gariepinus fingerlings.