The aquaculture sector has witnessed significant growth and development worldwide over the past couple of years, partly thanks to the rise in consumption. For billions of people worldwide, fish is an essential component of their diet. The fish feed has been the main driving force of a thriving aquaculture sector; they are an essential source of nutrients and minerals, boosting the fish’s overall development.
What is fish feed? | What ingredients are used for fish feed? | Production
Sustainable application and sustainable supply chain of fish for human consumption
Fish feed from wild fish | Novel proteins as the solution for fish feed
What Is Fish Feed?
Fish feeds are an integral part of commercial and personal aquaculture, which provides a balanced diet and nutrition for farmed fish. The aquaculture feed is mainly in pellets or granules, thus providing wholesome nutrition in a concentrated and stable form, allowing the fish to feed well and grow to maximum potential. The fish feeds’ critical components are fish oil and fish meal; it’s then combined with other vital ingredients like minerals, vitamins, cereal grains, and vegetable proteins, which in turn forms granules or pellets.
What ingredients are used for fish feed?
In modern times, producers are increasingly using ingredients from both animal and plant sources. The significant shift from fish meal and fish oil is due to the decreasing amount of resources. Most marine fish and some found in freshwater lakes are carnivorous; thus, they require feed rich in fats and proteins plus low amounts of carbohydrate and fiber. For fish species that are herbivorous and omnivorous feed predominantly on fish meals made from plant materials allowing them to digest starch compared to their compatriots, the carnivorous comfortably.
Animal-based ingredients used to manufacture food for fish farming include:
- Fish meal LT1
- Feather meal
- Standard fish meal
- Haemoglobin powder
- Bloodmeal
Plant-based ingredients comprise of: - Horse or fava beans
- Soybeans
- Soybean meal
- Soy protein concentrate
- Rapeseed
- Rapeseed meal
- Sunflower cake
- Corn
- Corn gluten
- Peas
- Pea protein concentrate
- Wheat
- Wheat middlings
- Wheat gluten
- Rice Protein Concentrate
Production
The production of natural food for fish is usually a simple and straightforward process. In this section, we are going to highlight aquaculture feed production briefly. Grinding of the ingredients: When it comes to natural fish feeds, the first thing that is done is measuring all the ingredients in correct and exact proportions. Begin grinding them one by one. Mixing of all ingredients: The next step is mixing all the elements that have been grounded. You’ll need a fish feed mixer. After all the dry ingredients have been thoroughly mixed, add vitamins and minerals and mix them. Addition of oil and water: It’s recommended that you warm the oil, pour it into the mixture, mix all the components for at least five minutes. Pour water onto it and continue mixing till it forms a mash. Processing of food mash on pellet machine: Pour the mixture into the fish feed extruder, which is in turn processed into granules or pellets. The size of your granules or pellets is wholly dependent on the size of the fish that will be fed. Drying of fish feed pellets: After the pellets are formed, they are dried, which reduces the moisture content. The drying temperature is less than 60-degree because higher temperatures would destroy the micronutrients found in fish meal. Cooling: The pellets must be cooled in the Counter-flow type feed cooler; this is quite significant as it removes water and heat, allowing for packaging at room temperature. If the fish feed isn’t cooled, cracks will appear on the pellets due to dehydration and rapid cooling.
Sustainable application and sustainable supply chain of fish for human consumption
Fish Feeding, mainly farmed fish, has been a highly controversial topic; it poses a significant challenge for sustainable development of the aquaculture sector. The 21st century has been plagued with rising temperatures due to the effects of global warming. Going green is the ‘mantra’ as efforts are geared to saving the planet. As more people are looking for ways of sustainable living, animals are not left behind. Fish being one of them, people want to know if their source of foods are sustainable and do not cause adverse effects to the environment. Significantly reducing the environmental footprint of aquaculture is top on the agenda; thus, organic fish food must be farmed or captured in manners that take into account the long-term sustainability and vitality of the farmed species and the marine environment, and the livelihoods of fish-reliant communities. Incorporating algae fish food is another vital application that improves the sustainability of fish feeds. Research has shown that algae in the fish meal have a positive impact on the fish’s growth performance. Using sustainable methods for making fish feed will boost its supply; this is significant as it will also ensure there is a constant supply of fish for human consumption. It’s a win-win situation for everyone.
Recent fish feed is based on fish meal from wild fish, which is from overfishing
Each year, billions of fish are caught either for human consumption or making fish meal. Of that number, 1/5 of the fish caught are ground, pressed, and dried into aquaculture feed. A study carried out in 2016 showed that 75% of fish oil and 69% of the fish meal were primarily used in fish farming. Overfishing can have adverse effects on the wild fish population, which will harm the whole marine eco-system. Another consequence is that it can also pollute our environment with nutrients found on fish excrement spreading diseases and parasites. The damage resulting from overfishing extends far beyond the marine eco-system, billions of people who depend on fishing livelihood eventually lose the source of economic activity as well as lose their vital source for protein.
Novel proteins as the solution for fish feed
With the ever-increasing world population, it’s essential to find alternative sources of fish feeds now more than ever. Sourcing feeds from wild fishing is no longer tenable; our best bet lies in novel proteins. Novel proteins are not animal-based; thus, they would not hamper the wild fish population; when it comes to natural fish feed, sustainability is essential by providing alternative sources of organic fish feed. When it comes to the sourcing of Novel Proteins, this is where bygora plays a crucial role by providing you with full access to novel proteins sourced from different suppliers ensuring your fish get the right nutritional content for optimal growth and development.
