Feed costs generally account for 60% to 70% of total fish farming expenses. Trying to save feed is an important measure to increase the economic benefits of fish farming. Here are some ways to save materials for reference.
With grass substitute
We can plant wheat straw, Sudan grass, etc. in the ratio of 5:2 on the surface of the water, or manually cut dry grass and fish to feed the fish, and pay attention to grass and material feeding first, and when the grass is insufficient, we can supplement it again. In this way, grass feed can be fed without feeding or feeding, which is extremely advantageous for raising mainly herbivorous fish such as grass carp and carp. Generally, 1 kilogram of fish is used for every 25 kilograms of grass, and it is not easy for the fish to eat high-quality forages to incur disease, which indirectly saves fish disease diagnosis and treatment costs. Fertilizer fish
Fertilizer is divided into organic fertilizer and inorganic fertilizer. One is to cast organic fertilizer. Before Xiatang, first apply basal fertilizer to fertilize the water quality. Generally, 200-300 kg of livestock manure or 100 kg of human waste is used per mu. After ponds, fertilizer is topdressed according to the water quality, weather, and fish growth conditions. Generally, the fertilizer is applied every day. Manure 50 to 70 kg, Quanchiposa. In addition, it is also possible to feed cake fat by 1% of the total weight of the fish in the hot season, and it can also be fed with bran and corn flour. The second is cast inorganic fertilizer. The first base fertilizer is applied 20 days before Xiatang. 2.5 kg of superphosphate and 3–5 kg of ammonium sulfate are used per mu. After Xiatang, there is less water supply, weather, and fish growth, and it is usually applied every 2 to 3 days. Ammonium 1.5 kg, superphosphate 0.25 kg, water Quanchiposa. Insect fish
In areas rich in insects, several black light lamps can be installed on the surface of fish ponds. Each lamp can attract 5 to 6 kg of insects like mosquitoes, flies and roundworms for fish consumption. Or hang a few porcelain boxes on the surface of the pond, and use animal scraps to attract and raise the fly. A large number of worms climb out of the box and fall into the water to become bait. Artificial feeding of crickets, yellow mealworms, etc. can also be adopted to feed fish. Generally 2 kg of insects can grow 1 kg of fish.
Fish farming
Fish fish farming refers to a method of fish farming that recycles bait properly. The general polyculture of cockroaches, cockroaches, grasses, cockroaches, cockroaches and wild miscellaneous fishes can make full use of the nutrition of different water layers. Fish manure can be used as fertilizer and water, and large numbers of plankton can be fed to feed cockroaches and cockroaches. Food residue residues It can provide bait for quail and quail, and other food-eating fish; dead fish and wild prawn can also provide bait for carnivorous fish. However, in stocking, it is important to distinguish between the ratio of main fish and mixed fish. Pig fish breeding
Set up a feed yard and a pig house near the fish farm to implement fish and pig breeding, three-dimensional development, and comprehensive utilization. Fish - fish farming - a virtuous cycle of raising pigs and fish. Fish and poultry polyculture
Poultry manure is rich in protein, minerals, and some vitamins. Feeding fish can also save a lot of feed. Feeds and grasses can be planted in the pool, with henhouses or duck sheds, chickens and ducks fed with feed and grass (fish can also be fed after processing), and chicken and duck manure can be fed with fish fertilizer and pond mud. Usually 50 chickens and 40 ducks can feed 1 mu of surface water.
Supplementary additives
When preparing or processing feed, mix as many varieties as possible, and add 1 kg of salt and 1 to 2 kg of oxytetracycline residues for livestock per 100 kg of feed. This will not only improve the quality of feed but also sterilize and prevent disease. Reasonable feeding
Feeding should be uniform, appropriate, timed, positioned, and should not be full of hunger, affecting fish digestion and growth. Feeding amount is directly related to feed utilization rate. Fish do not have stomach, and can not store feed for long time to digest and absorb. If you eat too much, the feed will not be completely digested and excreted, resulting in waste; the lack of feeding will affect the growth of fish. In production, it is advisable to ensure that more than 80% of the fish are satisfied with each feeding. The number of feedings depends on the feeding characteristics of the fish and the season and temperature. The number of high-temperature period is more, the number of low-temperature period is less, the number of fry stages is more and the number of fish species stages is less; under normal circumstances, it is appropriate to feed 2 to 3 times a day.
Prevent fish diseases
After the fish is ill, it affects both feeding and feed utilization. Therefore, we must pay attention to the prevention of fish diseases, timely disinfection of clear ponds, fish disinfection, water disinfection and water quality regulation, regular feeding baits to prevent fish disease.
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