Floating fish pellets accelerate maturity
Commercial fish farmers in Uganda are benefiting from a newly introduced floating fish feed that increases maturity period and increases the weight gain by over 60 percent.
According to Ugachick’s Operation manager Susan Nakimu, the firm which for long has been known for poultry production in Uganda joined the fish sector in order to help in its commercialisation. “As is the case in poultry production, feeds are an important component in the fish farming as it constitutes 60-70 percent of operational costs. Therefore together with a team of researchers, we developed feeds that ensure commercial viability of fish farming,” noted Nakimu. “The expertise and machinery was costly but got a grant from USAID’s Livelihood and Enterprise for Agricultural development (LEAD) project to kick start the project,” she added.
Tilapia, the fish most commonly reared fish in ponds, naturally feed on a wide range of tiny water plants and animals known as plankton. In ponds, plankton can be generated by seeding the water with organic or inorganic fertilizers. However, when grazing, the amount of energy tilapia use to fend for these planktons in the pond is enormous. Coupled with the fact that the tilapia in the pond fight for limited plankton, this exerts pressure on them and slows their growth. “Under farmed conditions, there are more fish per unit area as compared to the wild. Ultimately, it becomes impossible to provide the fish with appropriate levels of nutrition that can sustain economic growth rates. Hence the introduction of our floating fish feeds,” said Nakimu.
Ugachick’s floating fish feeds are tailored to meet the specific nutritional requirements of the fish at different stages of growth. She further noted that each pellet is complete in nutritional value and remains intact in water for about 15-20 minutes. “The trait of the fish pellet not dissolving immediately in the pond water and the ability for it not to sink reduces the potential negative effects on pond water quality which would have resulted from the excess feed decomposing in the pond as is the case with many other feeds available in the market.”
She cautioned fish farmers to ensure that their ponds are free from any impurities and that the feeds introduced in the ponds are consumed and finished by the fish. She added, “One has to train the fish on their feeding schedule and these helps in their uniform growth and development and also cuts on resource wastages.” This mode of feeding fish is known as feed by response. The method emphasizes feed based on the fishes’ interest in coming to eat. Once the fish shows no interest in feeding, a farmer should not add more feeds in the ponds.
The floating fish pellets are best suited for commercial farmers based on their high feed conversion ratio. Farmers use about 1.5kgs of the feeds to produce a tilapia weighing 1kg.
The company produces the feed using local ingredients including maize and soya beans. Currently, over 6,000 tonnes of floating fish feeds are produced annually by Ugachick. “Of this we export 60 percent and retain 40 percent for the local market,” added Nakimu