Ayodeji A. Adeoye

Bio: Ayodeji A. Adeoye is an academic researcher from Federal University of Agriculture, Abeokuta. The author has contributed to research in topics: Clarias gariepinus & Fish meal. The author has an hindex of 6, co-authored 12 publications receiving 211 citations. Previous affiliations of Ayodeji A. Adeoye include University of Plymouth & University of Agriculture, Faisalabad.

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

Abstract: A study was conducted to evaluate the effect of black soldier fly (Hermetia illucens) 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) 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.

Solidarity and social behaviour: how did this help communities to manage COVID-19 pandemic?

Abstract: Purpose – During the coronavirus (COVID-19) pandemic lockdowns, stay at home or work from home, many have argued that the westernised non-pharmaceutical interventions (NPI) do not provide remedial in low-income countries like Nigeria, where informal job seekers, street traders, informal labourers and artisans depend mainly on the informal economy. By applying social solidarity (SS) and community-based approach (CBA), the authors evaluate individual acts (trust, altruism and reciprocity) during the lockdown and how these practices evolve from individual approaches to collective actions. Design/methodology/approach – This study reflects on pragmatism research paradigm that enables researchers to maintain both subjectivity in their reflections and objectivity in data collection and analysis. The authors adopt a qualitative method through purposeful and convenience sampling procedure. Data were analysed thematically to identify elements of SS, individual acts, collective or community actions and perceptions. Findings – The findings reveal that COVID-19 had a disproportionate impact (lack of food and a fall in daily income) on workers, informal job seekers, informal businesses operators and the poor households. As such, the study developed a reflective model of solidarity exhibited by individual acts and collective acts (practices of resource pooling, information sharing, women empowerment, distribution of palliatives and donations) within trusted circles that helped people cope with the lockdown experiences. Practical implications – Solidarity represents beliefs, practices of values and norms. The SS exhibited by people through NPI would have implications on planning and monitoring the effectiveness of public health programmes during a pandemic in the future. Social implications – The findings of citizens and community actions have implications related to the process of building communities – coming together – and solidarity that enhances social development with implications on community health policy agenda during disasters, emergencies and health pandemic. Originality/value – This is one of the first studies to analyse the relationship between trust, altruism, reciprocity, SS and CBA during the COVID-19 pandemic. Also, it seems reasonable to clarify the concept of SS given the lack of clarity about the definitions from previous studies.

Correction for Feeding aquaculture in an era of finite resources

Abstract: Aquaculture's pressure on forage fisheries remains hotly contested. This article reviews trends in fishmeal and fish oil use in industrial aquafeeds, showing reduced inclusion rates but greater total use associated with increased aquaculture production and demand for fish high in long-chain omega-3 oils. The ratio of wild fisheries inputs to farmed fish output has fallen to 0.63 for the aquaculture sector as a whole but remains as high as 5.0 for Atlantic salmon. Various plant- and animal-based alternatives are now used or available for industrial aquafeeds, depending on relative prices and consumer acceptance, and the outlook for single-cell organisms to replace fish oil is promising. With appropriate economic and regulatory incentives, the transition toward alternative feedstuffs could accelerate, paving the way for a consensus that aquaculture is aiding the ocean, not depleting it.

Macroalgae as a sustainable aquafeed ingredient

Abstract: Macroalgae, commonly known as seaweed, offer a novel and added‐value dietary ingredient in formulated diets for fish. Production of biomass can be achieved without reliance on expensive arable land, as seaweed may be collected from coastal regions or farmed. There are three taxonomic groups represented by the term ‘macroalgae’: Rhodophyta (red), Chlorophyta (green) and Phaeophyta (brown). Like terrestrial plants, nutritional content in macroalgae can vary greatly amongst species, genera, divisions, seasons and locations. Aside from their basic nutritional value, seaweeds contain a number of pigments, defensive and storage compounds, and secondary metabolites that could have beneficial effects on farmed fish. This review appraises the beneficial qualities of these macroalgae compounds and their potential for exploitation in commercial finfish feeds. The current knowledge of the effects of macroalgae inclusion in finfish diets is also addressed. From these >50 fish feeding studies that were analysed, enhancing trends in fish growth, physiology, stress resistance, immune system and fillet muscle quality were reported. However, only a small fraction of algal species have so far been investigated as potential components in finfish diets, and furthermore, this review has identified a number of knowledge gaps that current research has yet to address. To conclude, an appraisal is made of the possible technologies employed to exploit seaweeds to an industrial level through stabilising the algal meal, enhancing the digestibility and functional food properties.