Project – Feed Management Practices and Growth Performance of Catfish in Small-Scale Aquaculture Farms: A Study of Selected Farms in Ijebu-Ode, Ogun State

CHAPTER ONE

INTRODUCTION

1.1 Background to the Study

Aquaculture has become an important component of food production and livelihood generation in Nigeria, particularly because of the increasing demand for fish as an affordable source of animal protein. Among the species cultured in Nigeria, African catfish (Clarias gariepinus) is particularly important because of its adaptability to different culture systems, tolerance of relatively high stocking densities, rapid growth and consumer acceptance. Small-scale catfish farming has consequently developed into an important commercial activity for many Nigerian farmers. However, the productivity and profitability of catfish enterprises depend on the effective management of major production inputs, among which feed is one of the most important. Adeosun, Olaoye, Ojebiyi, Agarawu and Adeosun (2024), in their study of catfish production in Odogbolu Local Government Area of Ogun State, found that feed accounted for 77.4% of total production cost, demonstrating the economic importance of appropriate feed management in the local catfish enterprise.

Feed management encompasses decisions and practices relating to the type and quality of feed used, feeding rate, feeding frequency, feeding time, feed storage, feed distribution and adjustment of feed quantities according to fish size and biomass. Appropriate feed management is necessary because fish require adequate quantities of nutrients for maintenance, tissue development, growth and reproduction, while excessive or poorly managed feeding can increase production costs and deteriorate water quality. Dauda, Salele and Orimogunje (2022) emphasize that feeds and feeding constitute a major cost in intensive aquaculture and that effective feeding is an important determinant of production success. In their experimental study of African catfish fingerlings, different feeding frequencies and times produced differences in growth performance and feed utilization, with fish fed three times daily showing superior growth performance under the experimental conditions. These findings demonstrate that the quantity and timing of feed delivery are important components of feed management and may influence the biological performance of cultured catfish.

The quality and nutritional composition of feed are also fundamental to catfish growth performance. Fish require balanced dietary supplies of protein, energy, lipids, carbohydrates, vitamins and minerals to support growth and efficient utilization of nutrients. Protein is particularly important because it supplies amino acids required for tissue formation and growth, while energy is necessary for metabolic activities and determines how effectively dietary protein can be utilized for tissue deposition. Nigerian feeding trials have demonstrated differences in growth performance and feed conversion associated with feed composition. Ebeniro (2020), for example, found significant differences in final weight, daily weight gain, specific growth rate, feed intake and feed conversion ratio among Clarias gariepinus juveniles fed differently formulated diets. The commercial diet produced the highest growth response and the lowest feed conversion ratio in that study, illustrating how feed formulation and nutritional quality can affect the biological efficiency of catfish production.

The feeding rate is another important dimension of feed management because the amount of feed supplied to fish needs to correspond reasonably with their size, biomass, developmental stage and environmental conditions. Underfeeding may restrict nutrient intake and slow growth, whereas overfeeding can result in feed wastage, increased production costs and deterioration of water quality through uneaten feed and increased metabolic waste. Nigerian research has demonstrated that different feeding rates can produce different outcomes in growth and nutrient utilization. A 2024 feeding-rate study involving Clarias gariepinus fingerlings evaluated feeding levels of 3%, 5%, 7% and 10% of body weight and reported differences in weight gain, specific growth rate and feed conversion characteristics across treatments. The study recommended feeding according to fish body weight rather than applying a fixed quantity throughout production. This emphasizes the importance of adjusting feed quantities as fish grow and as the biomass of the culture population changes.

Feeding frequency and feeding time are closely related to the efficient utilization of feed by cultured catfish. Fish have physiological and behavioural characteristics that influence their ability to locate, consume and utilize feed, meaning that the timing and frequency of feeding can affect growth and feed conversion. Feeding at inappropriate intervals may result in excessive competition among fish, feed wastage or inadequate nutrient intake, while appropriately distributed feeding can improve feed consumption and utilization. Dauda et al. (2022) found that African catfish fingerlings fed three times daily exhibited superior growth performance compared with the other feeding-frequency treatments, while feeding in the evening also produced better performance than feeding once in the morning under their experimental conditions. Similarly, Abanikannda, Jimoh, Bakare, Shitta and Shopeyin (2019) examined different feeding regimens in African catfish and demonstrated that feeding intervals can influence growth parameters. These findings indicate that feeding frequency and timing constitute important management decisions that may affect the growth performance of catfish.

The economic importance of feed management is particularly significant in small-scale aquaculture because farmers often operate with limited capital and may have difficulty absorbing increases in production costs. When feed represents a large proportion of total production expenditure, inefficient feeding practices can substantially reduce profitability even when fish survival and growth remain acceptable. Evidence from Ogun State illustrates this challenge. Adeosun et al. (2024) reported that feed constituted 77.4% of the total cost of catfish production among farmers in Odogbolu Local Government Area and recommended efficient use of feed resources as an important strategy for improving profitability. Earlier research on African catfish also indicates that properly formulated on-farm feeds can reduce feeding costs without necessarily compromising growth, survival and yield. Obirikorang et al. (2020) found that appropriately formulated on-farm diets could reduce feed costs by up to 30% while maintaining comparable growth and yield outcomes to industrial feed under the conditions of their experiment. Thus, feed management is simultaneously a biological and economic issue for small-scale catfish farmers.

The importance of examining feed management practices becomes particularly relevant in Ijebu-Ode, Ogun State, where catfish farming occurs within a wider aquaculture economy in the state. Recent evidence from Ogun State shows that catfish farming is commercially oriented and that production efficiency and profitability depend on the effective use of production resources. Ogunnaike, Idowu, Osunmakinde and Ologbon (2026) studied 300 catfish farmers in Ogun State and found that production efficiency was influenced by production inputs including labour, quantity of fingerlings and equipment-related costs, while the authors emphasized the need for cost-effective production measures. Although studies have examined the profitability and production efficiency of catfish farmers in Ogun State, there is comparatively less specific evidence on how day-to-day feed-management practices among small-scale farms in Ijebu-Ode relate to growth performance. Therefore, examining feed type and quality, feeding rate, feeding frequency and feeding-time practices in relation to catfish growth performance can provide useful farm-level evidence for improving production outcomes among small-scale aquaculture farmers in the study area.

1.2 Statement of the Problem

Catfish farming has become an important commercial aquaculture activity in Ogun State, but small-scale farmers continue to face challenges associated with production costs and efficient resource utilization. Feed represents one of the most significant production expenses in catfish farming, meaning that poor feed-management decisions can substantially affect the profitability of an enterprise. Evidence from Odogbolu Local Government Area of Ogun State indicates that feed accounted for 77.4% of total production costs among sampled catfish farmers. The high contribution of feed to production expenditure means that farmers who overfeed, underfeed, use inappropriate feed or fail to adjust feed quantities to fish biomass may experience increased production costs and reduced returns. Consequently, effective feed management represents an important issue requiring attention among small-scale catfish farmers in Ogun State.

A second problem concerns the nutritional quality and suitability of feeds used by small-scale catfish farmers. Farmers may use different brands of commercial feed or locally formulated diets based on availability, affordability and perceived performance. However, differences in protein content, energy density, ingredient quality, digestibility and feed formulation may produce different growth outcomes. Experimental evidence from Nigeria demonstrates that different diets can result in substantial differences in weight gain, specific growth rate and feed conversion ratio in Clarias gariepinus. Ebeniro (2020) reported significant differences in growth and feed-conversion characteristics among catfish juveniles fed different formulated diets, while other Nigerian studies have similarly found differences in growth and nutrient utilization according to dietary composition. The problem, therefore, is whether the feed types and qualities used by small-scale farmers in Ijebu-Ode are adequately matched to the nutritional requirements of their fish at different stages of production.

A third problem relates to feeding rate, frequency and timing. Small-scale farmers may determine feeding quantities through experience, estimation or fixed quantities rather than regularly calculating feed requirements according to fish biomass and growth stage. Such practices may lead to underfeeding, overfeeding or inconsistent feed distribution. Research among African catfish has demonstrated that feeding frequency and feeding time can influence growth performance and feed utilization. Dauda et al. (2022) reported superior growth performance under a three-times-daily feeding regime in their experimental conditions, while a separate Nigerian study found that feeding regimens and intervals could influence growth parameters. Similarly, feeding-rate research indicates that different percentages of body weight can produce different growth and feed-conversion outcomes. The problem is therefore whether small-scale catfish farmers in Ijebu-Ode employ systematic feeding rates, appropriate feeding frequencies and suitable feeding times that support efficient fish growth.

Finally, there is a location-specific research gap concerning the relationship between feed management practices and the actual growth performance of catfish on small-scale farms in Ijebu-Ode. Existing research in Ogun State has examined catfish profitability and production efficiency, while experimental studies elsewhere in Nigeria have examined feed formulation, feeding frequency, feeding rate and nutrient utilization. However, findings from controlled feeding experiments cannot automatically be assumed to represent the practices and outcomes of small-scale commercial farms operating under everyday production conditions. There is therefore a need to examine how feed quality, feeding rate, feeding frequency and feeding time are practiced by selected small-scale catfish farmers in Ijebu-Ode and how these practices relate to indicators of growth performance such as weight gain, specific growth rate, feed conversion ratio and survival. Generating such evidence may assist farmers and aquaculture extension practitioners in identifying practical feeding practices that can improve biological performance while controlling one of the largest components of production cost.

1.3 Purpose of the Study

The general purpose of this study is to examine the relationship between feed management practices and growth performance of catfish in small-scale aquaculture farms in Ijebu-Ode, Ogun State.

Specifically, the study seeks to:

1. examine the relationship between feed type and nutritional quality and the growth performance of catfish in selected small-scale aquaculture farms in Ijebu-Ode, Ogun State;
2. determine the relationship between feeding rate and feed quantity management and the growth performance of catfish in selected small-scale aquaculture farms in Ijebu-Ode, Ogun State;
3. examine the relationship between feeding frequency and feeding schedule and the growth performance of catfish in selected small-scale aquaculture farms in Ijebu-Ode, Ogun State; and
4. determine the relationship between feed storage and handling practices and the growth performance of catfish in selected small-scale aquaculture farms in Ijebu-Ode, Ogun State.

1.4 Research Questions

The following research questions will guide the study:

1. What is the relationship between feed type and nutritional quality and the growth performance of catfish in selected small-scale aquaculture farms in Ijebu-Ode, Ogun State?
2. What is the relationship between feeding rate and feed quantity management and the growth performance of catfish in selected small-scale aquaculture farms in Ijebu-Ode, Ogun State?
3. What is the relationship between feeding frequency and feeding schedule and the growth performance of catfish in selected small-scale aquaculture farms in Ijebu-Ode, Ogun State?
4. What is the relationship between feed storage and handling practices and the growth performance of catfish in selected small-scale aquaculture farms in Ijebu-Ode, Ogun State?

1.5 Research Hypothesis

The following null hypothesis will be tested at the 0.05 level of significance:

H₀: There is no significant relationship between feed management practices and the growth performance of catfish in selected small-scale aquaculture farms in Ijebu-Ode, Ogun State.

1.6 Significance of the Study

The study will be significant to small-scale catfish farmers because it will provide information on feeding practices that may influence the growth performance and efficient utilization of feed. The findings may assist farmers in making more informed decisions concerning feed selection, feeding quantity, feeding frequency, feeding time and feed handling.

The study will be useful to aquaculture extension officers and fisheries development practitioners because it will provide farm-level information that can be used in developing training programmes on efficient feeding management. Such programmes may help farmers reduce feed wastage and improve fish growth while controlling production costs.

The study will also be useful to government agencies and policymakers responsible for fisheries and aquaculture development. Findings from the study may assist in developing policies and extension interventions aimed at improving the productivity and profitability of small-scale aquaculture enterprises in Ogun State.

The study will benefit fish-feed manufacturers and suppliers by providing information about the feeding practices and challenges experienced by small-scale catfish farmers. This may support the development and promotion of feeds that are nutritionally appropriate, affordable and suitable for different stages of catfish production.

The study will also be relevant to financial institutions and aquaculture development programmes because efficient feed management can influence the cost structure and financial sustainability of small-scale fish farms. Evidence that demonstrates the importance of feed management may support training and financing programmes aimed at improving aquaculture enterprises.

Finally, the study will contribute to academic and research knowledge by providing empirical evidence on feed management and catfish growth performance within the specific context of small-scale aquaculture farms in Ijebu-Ode. It may provide a useful reference for researchers investigating aquaculture productivity, fish nutrition, feed utilization, farm management and the economics of catfish production in Nigeria.

1.7 Scope of the Study

The study focuses on feed management practices and growth performance of catfish in selected small-scale aquaculture farms in Ijebu-Ode, Ogun State.

The independent variable, feed management practices, will be examined through four dimensions:

• feed type and nutritional quality;
• feeding rate and feed quantity management;
• feeding frequency and feeding schedule; and
• feed storage and handling practices.

The dependent variable is growth performance of catfish, which will be assessed using indicators such as:

• weight gain;
• specific growth rate;
• feed conversion ratio;
• survival rate; and
• final body weight.

Geographically, the study will be limited to selected small-scale aquaculture farms within Ijebu-Ode, Ogun State. The study will focus on commercial farms that culture African catfish (Clarias gariepinus).

1.8 Operational Definition of Terms

Aquaculture: The controlled farming and production of aquatic organisms, including fish, under managed conditions.

Small-Scale Aquaculture Farm: A relatively small fish-farming enterprise operated with limited land, capital, infrastructure and production capacity, usually managed by individual farmers or households.

Catfish: In this study, catfish refers primarily to the African catfish, Clarias gariepinus, a major cultured fish species in Nigeria.

Feed: A prepared or formulated material supplied to cultured fish to provide nutrients required for maintenance, growth and other physiological functions.

Feed Management: The systematic process of selecting, storing, handling, measuring and administering fish feed in accordance with the nutritional and production requirements of cultured fish.

Feed Type: The particular commercial, locally formulated or farm-produced diet supplied to catfish during production.

Nutritional Quality: The adequacy and balance of nutrients such as protein, lipid, carbohydrate, vitamins and minerals contained in fish feed.

Feeding Rate: The quantity of feed supplied to fish, commonly expressed as a percentage of the total fish biomass or body weight.

Feeding Frequency: The number of times fish are supplied with feed within a specified period, usually per day.

Feeding Schedule: The planned arrangement of feeding times and intervals used by a farmer during the production cycle.

Feed Storage: The manner in which fish feed is kept before use to protect it from moisture, contamination, pests, excessive heat and deterioration.

Feed Handling: The processes involved in measuring, transporting, preparing and distributing feed to fish.

Feed Conversion Ratio (FCR): The quantity of feed required to produce a unit increase in fish biomass. A lower FCR generally indicates more efficient feed utilization.

Growth Performance: The biological response of cultured fish to the production conditions and feeding regime, measured in this study through weight gain, specific growth rate, final weight, feed conversion ratio and survival.

Weight Gain: The increase in body weight of fish over a specified production period.

Specific Growth Rate (SGR): A measure of the rate at which fish body weight increases over time, commonly expressed as a percentage per day.

Survival Rate: The percentage of stocked fish that remain alive at the end of a specified production period.

Feed Wastage: Feed supplied to fish that is not consumed and may remain in the culture environment or be lost during feeding.

Feed Utilization: The extent to which fish consume and efficiently convert supplied feed nutrients into body tissue and growth.

Project – Feed Management Practices and Growth Performance of Catfish in Small-Scale Aquaculture Farms: A Study of Selected Farms in Ijebu-Ode, Ogun State