-
How to strengthen the management of fish in warm sheds? Detailed explanation of breeding key points
Strengthening the management of fish in warm sheds. At present, the main species cultured in warm sheds are tilapia, catfish, and freshwater white pomfret fry and adult fish. For tilapia culture, attention should be paid to maintaining water temperature and managing water quality to prevent frostbite on the head from affecting sales. For routine water disinfection, chlorine dioxide can be used, and high-protein complete formula pellet feed should be selected as much as possible. For catfish culture, chlorine dioxide can also be used for routine water disinfection. Special attention should be paid to preventing the occurrence of saprolegniasis. When routinely feeding animal by-products such as chicken intestines, care should be taken to keep the bait fresh. Culturing freshwater white pomfret and culturing
-
Detailed Explanation of the Processing Technology for Fresh-Brined Red Drum Fish Fillets
The scientific name of the red drum (Sciaenops ocellatus) is the spotted weakfish, belonging to the genus Sciaenops, family Sciaenidae, order Perciformes. It is a eurythermal and euryhaline fish, with a suitable temperature of 10-30°C, optimally 18-25°C. It has been reported to tolerate low temperatures of 2°C. Its salinity tolerance range is very wide, and it can grow normally in freshwater, brackish water, and seawater. It is a carnivorous fish. In natural waters, it mainly feeds on shellfish, cephalopods, small fish, etc. In artificial rearing, compound feed can be used. The red drum has few diseases and grows quickly. According to reports,
-
How to manage fishing affairs in June? Key points that aquaculture farmers must read
June is the best period for aquaculture animals to feed heavily and grow rapidly, and it is also a stage when epidemics among aquaculture animals are prone to break out. Therefore, fishing affairs in June should be carried out around feeding and disease prevention. Feeding (1) Master the feeding amount. The daily feeding amount of different feeds as a proportion of the body weight of aquaculture animals in the pond is as follows: ordinary feed such as rapeseed cake and soybean meal, 6%-8%; pelleted compound feed, 2%-4%; for carnivorous fish such as mandarin fish and bass that are directly fed small fish and shrimp, 1%-2%; green
-
4 Efficient New Fish Medications to Help Prevent and Treat Fish Diseases
1. High Chlorine Powder. This product is a bactericide; used at the right time, it has excellent preventive and curative effects on hemorrhage disease and red-skin disease, print disease, gill rot, black gill, enteritis, shell rot and red-leg disease in fish, shrimp, crabs, soft-shelled turtles, eels and frogs. It has a notable disinfecting, sterilizing and improving effect on pond bottom sediment and pond water. 2. Fish Parasite Nemesis. This product is a new type of highly efficient parasiticide (anthelmintic), capable of powerfully killing fish parasites such as Lernaea, Sinergasilus, Trichodina, Dactylogyrus, Gyrodactylus, sporozoans, Diplozoon and monogenean trematodes, and for
-
What is the optimal protein level in fish feed?
Protein is the main nutritional indicator of compound feed for fish, and the protein level directly affects the intrinsic quality of the fish feed. Different fish species and different growth stages have different optimal protein requirements. Too high a protein content not only wastes feed protein resources, but also increases the pressure of pond water quality management. Too low a protein content, on the one hand, causes slow fish growth and poor disease resistance, and on the other hand, delays production timing. Therefore, mastering the optimal protein level of fish feed is of great
-
How to mix fish feed? Sharing several practical formulas
1. Suitable for grass carp or silver carp and bighead carp: rice straw powder 70%, soybean cake 15%, cottonseed cake 10%, cornmeal 5%, plus bone meal 1%, salt 0.5%, and an appropriate amount of vitamins. 2. Suitable for cage-cultured grass carp: soybean stalks or peanut vines 60%, soybean cake 15%, rapeseed cake (or cottonseed cake) 10%, cornmeal 10%, fish meal 5%, plus clam shell powder (or bone meal) 1%, salt 0.5%. 3. Suitable for grass carp: dried green grass powder (or peanut vines, sweet potato vines) 45%, soybean cake
-
Fishery Science and Technology Collaboration Network: 100 Key Achievements in Aquatic Science and Technology
At the 2007 National Fishery Science and Technology Collaboration Network Conference that concluded today, a declaration was issued to the national fishery science and technology community on jointly advancing the "Ten Major Actions," and 100 key achievements in aquatic science and technology were introduced and released to the public. It is reported that the 100 aquatic science and technology achievements cover disciplines and fields such as resource conservation and development, aquatic species breeding, healthy aquaculture, aquatic disease prevention and control, aquatic product quality and safety, and fishery equipment and engineering. They include both national-level major achievements in high and new technology and the promotion of independent innovation, as well as those oriented to industry development needs
-
Six fish feed formulas, useful reference for scientific fish farming
1. Suitable for tilapia in flowing water and cage culture: grass meal 20%, fish meal 30%, soybean cake 20%, corn gluten meal 20%, rice bran 20%, wheat bran 10%, corn flour 5.5%, bone meal 1%, salt and vitamins together 0.5%. 2. Suitable for grass carp: sweet potato vine meal 45%, soybean cake 13%, rice bran 15%, wheat bran 12%, fish meal 3%, corn flour 10%, bone meal 1.5%, salt 0.5%. 3. Suitable for bighead carp, silver carp and grass carp: rice straw
-
How to manage a fish pond after the start of winter? These tips you need to know
1. Pond renovation. Use the winter slack season to renovate the pond: turn small ponds into large ponds and shallow ponds into deep ponds. After renovation, the pond's water-holding capacity can be increased and the pond environment improved. Ponds in relatively good condition should also be drained, and excessively thick mud dug out so that the mud thickness is kept at around 20cm. Remove weeds around the pond and raise and reinforce the pond embankments. 2. Pond disinfection. A properly repaired pond should be disinfected with quicklime. Pond disinfection should be carried out on a sunny day. For dry disinfection, use 50-80kg of quicklime per 667 sq m
-
Prevent Fish from Catching Cold When Stocking Fish in Autumn
Autumn is the golden season for stocking large numbers of silver carp, grass carp, black carp, bighead carp and other fish species into reservoirs. But many fish farmers have found that, often within 2 to 7 days after stocking, sick and dead fish are seen swimming on the reservoir surface. These sick fish lose their skin luster, their body surface mucus increases, and in severe cases they become paralyzed, rigid and die. The above symptoms are typical of a "cold," mainly caused by drastic changes in water temperature, in which the nerve endings in the fish skin are strongly stimulated and the internal organs' activities become disordered, with a mortality rate as high as 20% to 60%. Fish species are transported from the fish pond to
条件筛选