The characteristics of extruded floating fish feed and its s
Posted by Animall Feed Blok Making Machine | updatetime 2020-08-04 16:05
The characteristics of extruded floating fish feed and its significance in aquaculture production
In order to improve the utilization and digestion and absorption rate of feed, reduce the impact of feed on the water envrionment, and improve the efficiency of breeding production, aquatic science and technology workers have made unremitting efforts. By optimizing the feed formula, improving the quality of feed machinery, and improving the processing technology, better economic and social benefits have been obtained. The use of extruded processing methods to produce fish feed is an important research achievement in feed proccessing. The current twin-screw extruder can produce buoyant, slow sinking and sinking feed according to the needs of aquaculture production. Among them, the extruded floating fish feed has the special functions and effects that the sinking feed can't match, so it has been very popularized and applied.
1. The extruded floating fish feed can float on the water for a long time, which is convenient for feeding and management and is beneficial to labor saving. Since the extruded floating fish feed can float on the water for a long time, the feeding situation of the fish can be observed well after feeding, and it is convenient to adjust the feeding amount according to the feeding situation of the fish; at the same time, it can be more accurately according to the changes in the food intake of the fish and feeding on the surface. Breeders can calculate the amount of bait that should be fed according to the species, specifications, quantity, water temperature and bait rate of the fish being cultured, and feed quickly, which saves a lot of time and improves labor productivity.
2. Expanded floating fish feed is beneficial to improve feed utilization. Due to the high temperature and high pressure processing conditions, the starch in the feed is matures, fat, etc. are more conducive to digestion and absorption, and the fiber structure and cell wall are destroyed and softened, and the gossypol in cottonseed meal and the antitrypsin in soybeans and other harmful substances are destroyed. Thereby improving the palatability and digestibility of feed. In addition, due to the physical and chemcal changes in the extruded process, the extruded feed generally produces powder within 1%, which directly improves the effective use of feed. Under normal circumstances, the use of extruded floating feed to raise fish can save 5-10% of feed compared with powderd feed or other pellet feeds.
3. The use of extruded floating fish feed can reduce water pollution. The extruded floating fish feed will not dissolve in the water for a long time. The floating time of high-quality floating fish feed can be as long as 12 hours, and it is easy to absever and control on the bait, reducing or avoiding the influence of powder and remaining residual bait on the water body. Pollution, which is extremely beneficial to enviromental protection and growth of fish.
Expanded floating fish feed has a wide range of application prospects. In terms of breeding methods, evtruded floating fish feeds have wide applicability. Floating fish feeds can be used for pond fish farming, rice filed fish farming, flowing water fish farming, fish farming in cages, factory fish farming, fish farming in cages, factory fish farming, and large water intensive farming. Especially for fish farming in mountain ponds, rice fields, and intensive farming on large water surfaces where the breeding densityis low, the use of floating fish feed is more adventageous than other feeds. In term of cultured species, whether freshwater fish or marine fish, except for a few bottom-dwelling fish that are extremely difficult to domesticate to eat on the surface, they can well eat floating fish feed, such as perch, snakehead, water fish, famous frogs, soft-shelled turtles, tortosies, catfish, etc., as well as conventionally farmed grass carp,carp, and crucian carp. For species such as American frog and sea bass with special physiological functions, it is more convenient to breed with floating feed, and it can show its superiority. According to different species and different stages of growth and development, the production of extruded and floating fish feeds that are compatible with their caliber and nutritional needs can well meet the of conventional aquaculture and special aquaculture for their feed, which is convenient for farmers, it can also promote the development of production.
1. The extruded floating fish feed can float on the water for a long time, which is convenient for feeding and management and is beneficial to labor saving. Since the extruded floating fish feed can float on the water for a long time, the feeding situation of the fish can be observed well after feeding, and it is convenient to adjust the feeding amount according to the feeding situation of the fish; at the same time, it can be more accurately according to the changes in the food intake of the fish and feeding on the surface. Breeders can calculate the amount of bait that should be fed according to the species, specifications, quantity, water temperature and bait rate of the fish being cultured, and feed quickly, which saves a lot of time and improves labor productivity.
2. Expanded floating fish feed is beneficial to improve feed utilization. Due to the high temperature and high pressure processing conditions, the starch in the feed is matures, fat, etc. are more conducive to digestion and absorption, and the fiber structure and cell wall are destroyed and softened, and the gossypol in cottonseed meal and the antitrypsin in soybeans and other harmful substances are destroyed. Thereby improving the palatability and digestibility of feed. In addition, due to the physical and chemcal changes in the extruded process, the extruded feed generally produces powder within 1%, which directly improves the effective use of feed. Under normal circumstances, the use of extruded floating feed to raise fish can save 5-10% of feed compared with powderd feed or other pellet feeds.
3. The use of extruded floating fish feed can reduce water pollution. The extruded floating fish feed will not dissolve in the water for a long time. The floating time of high-quality floating fish feed can be as long as 12 hours, and it is easy to absever and control on the bait, reducing or avoiding the influence of powder and remaining residual bait on the water body. Pollution, which is extremely beneficial to enviromental protection and growth of fish.
Expanded floating fish feed has a wide range of application prospects. In terms of breeding methods, evtruded floating fish feeds have wide applicability. Floating fish feeds can be used for pond fish farming, rice filed fish farming, flowing water fish farming, fish farming in cages, factory fish farming, fish farming in cages, factory fish farming, and large water intensive farming. Especially for fish farming in mountain ponds, rice fields, and intensive farming on large water surfaces where the breeding densityis low, the use of floating fish feed is more adventageous than other feeds. In term of cultured species, whether freshwater fish or marine fish, except for a few bottom-dwelling fish that are extremely difficult to domesticate to eat on the surface, they can well eat floating fish feed, such as perch, snakehead, water fish, famous frogs, soft-shelled turtles, tortosies, catfish, etc., as well as conventionally farmed grass carp,carp, and crucian carp. For species such as American frog and sea bass with special physiological functions, it is more convenient to breed with floating feed, and it can show its superiority. According to different species and different stages of growth and development, the production of extruded and floating fish feeds that are compatible with their caliber and nutritional needs can well meet the of conventional aquaculture and special aquaculture for their feed, which is convenient for farmers, it can also promote the development of production.
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