Fish meal

Fish meal is a fine powder.

It is made from small fish. People cook and dry the fish. Then they grind it into dust.

This powder helps farm animals grow. It is used to feed pigs and chickens. It also feeds fish in farms.

Making this food uses many fish. It takes many fish to make a little powder. This can be hard on the sea.

People use it to make more food for us all.

Fish meal is a special food made from fish.

It is often a fine powder or a hard cake. This food helps farm animals grow big and strong. It provides a lot of protein for pigs and chickens.

It is also very important for fish raised on farms. In 2010, over half of all fish meal went to farmed fish.

Making fish meal follows a set of steps. First, workers cook the fish in a large cylinder. This helps get the liquid out. Next, they press the fish to remove oil and water. This leaves a thick part called a press cake. Then, they dry the cake in a heated drum. Finally, they grind it in a mill to make it smooth.

Using fish meal can be a difficult topic. It takes four to five tons of fish to make one ton of meal. This can lead to over-fishing in some parts of the sea. Some people worry this hurts the ocean. Others say it helps make more food for people around the world.

Fish meal is a special kind of food made from fish.

It is used to feed many different farm animals. This includes pigs, poultry, and even fish that are raised on farms. It is very dense in calories and is cheap to produce. Because it is easy to make, it helps factory farms grow more animals. This helps provide food for many people around the world.

Making fish meal involves several careful steps in a factory. First, the fish go into a large cooker called a steam-jacketed cylinder. This cooking stage is very important for the next steps. Next, the cooked fish is pressed inside a tube to squeeze out liquids. This leaves behind a solid part called press cake. Then, the cake is dried inside a heated drum. Finally, a hammer mill grinds the dried meal into a fine powder.

People have used fish parts to feed animals for a long time. In the 14th century, Marco Polo wrote about animals eating dried fish. He said cattle, cows, sheep, camels, and horses ate it happily. As far back as 800 AD, people in Norway used herring for industry. They used wooden boards and stones to press the oil out. Before the year 1910, people in the UK mostly used fish meal as fertilizer. Today, it is mostly used as a protein supplement for food.

There are many facts about how fish meal is used today. In 2010, about 56% of fish meal was used for farmed fish. About 20% went to pigs and 12% went to poultry. It is a great source of omega-3 fatty acids like EPA and DHA. It can take four to five tons of fish to make just one ton of meal. Every year, about six million tons of fish are caught just for this. The price for high-protein meal has been between $385 and $554 per ton since 2000.

Using fish meal can be a hard topic for many people. Some worry that making it leads to over-fishing in the ocean. This can hurt local fisheries and damage the environment. In 2022, the FAO expressed concern about fish use in West Africa. Other people say it is helpful because it creates more food. Because of this, scientists are looking for other things to use. They are testing things like soybean meal, algae, and even corn leftovers.

Fish meal is a concentrated commercial product used to feed many types of animals. It is made from whole wild-caught fish, bycatch, and various fish by-products.

Because it is calorically dense and inexpensive to produce, it plays a vital role in modern agriculture. It supports the growth of factory farms by providing necessary nutrients for pigs, poultry, and farmed fish. While it helps produce more food for the global population, its large-scale production is a subject of much debate.

Modern industrial production follows a precise sequence of mechanical steps to transform raw seafood into a stable powder. First, the fish enter a commercial cooker, which is a long, steam-jacketed cylinder. This cooking stage is critical because improper temperatures can prevent liquid extraction or make the material too soft. Next, the cooked fish undergoes pressing inside a perforated tube. This process expels liquids, reducing the water content from 70% to about 50% and the oil content to 4%. The remaining solid is known as press cake.

The third stage is drying, which prevents the growth of harmful bacteria or molds. Manufacturers use two main methods for this. In direct drying, very hot air at 500 °C is passed over the material in a cylindrical drum. In indirect drying, the meal is tumbled inside a cylinder containing steam-heated discs. Finally, the dried material goes through a mill, often a hammer mill. This grinding step removes any remaining lumps or bone particles to create a fine consistency.

History shows that humans have used fish parts for animal feed for many centuries. In the 14th century, Marco Polo recorded that various animals, including camels and horses, ate dried fish without dislike. As early as 800 AD, people in Norway used herring as an industrial material. They used a primitive method involving wooden boards and stones to press out the oil. Before 1910, fish meal was used primarily as a fertilizer in the United Kingdom. Today, its primary role has shifted to serving as a protein supplement in compound animal feed.

Global demand for fish meal is driven by changing dietary habits and the rise of aquaculture. As people in developed nations move away from red meat, the demand for farmed fish has grown. By 2016, farmed fish accounted for half of all fish consumed worldwide. This shift has caused a significant increase in the need for fish meal. As of 2010, the distribution of fish meal was quite specific: 56% went to farmed fish, 20% to pigs, and 12% to poultry. The remaining 12% was used for other purposes, including fertilizer.

The scale of this industry is massive and involves significant biological resources. It takes approximately four to five tons of fish to produce just one ton of fish meal. Every year, about six million tons of fish are harvested specifically for this purpose. High-quality fish meal is valued for its nutrient density, often containing between 60% and 72% crude protein by weight. It is also a primary source of omega-3 long-chain polyunsaturated fatty acids, specifically eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). However, the cost can be high, ranging from $385 to $554 per ton since 2000.

Despite its benefits, the production of fish meal carries serious environmental and safety risks. The industry can contribute to over-fishing, which may push marine ecosystems beyond their ability to recover. In 2022, the Food and Agriculture Organization (FAO) expressed concern regarding the overexploitation of fish in West Africa. There are also safety concerns regarding spontaneous combustion caused by the oxidation of fatty acids. To prevent fires on factory ships, manufacturers add antioxidants like ethoxyquin to the meal. Additionally, recent studies have noted the presence of plastic pollution in various fish meal products globally.