Aquaculture Lists
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Mixed culture technique based on silver carp and bighead carp
Filter-feeding fish such as silver carp and bighead carp are mainly cultured, and other fish are properly mixed, with special attention to fish that eat organic decay debris. In the process of feeding, the method of applying farm manure is mainly adopted. 1. The stocking amount of silver carp and bighead carp accounts for 70% to 80%, and the output accounts for 60% to 70%. The large size fish species are solved by the method of fish pond culture. Silver carp and bighead carp species began to be caught in rotation in May, 6 to 7 times a year, and the size of fish species was enlarged immediately after the rotation, and the number of species released was generally equal to that caught. 2. To apply to farmers
2019-01-15 -
The formula of nine kinds of fish feed
1. Suitable for grass carp or silver carp rice straw meal 70%, bean cake 15%, cotton cake 10%, corn flour 5%, plus bone meal 1%, salt 0.5%, vitamin amount. two。 It is suitable for raising grass carp and soybean straw, or peanut vine 60%, bean cake 15%, rapeseed cake (or cottonseed cake) 10%, corn flour 10%, fish meal 5%, clam shell meal (or bone meal) 1%, salt 0.5%. 3. Suitable for grass carp thousand green grass powder (or peanut vine, sweet potato vine) 45%, bean cake 15
2019-01-15 -
High yield technique of mixed Culture of Fish in format Pond
0. Introduction the mixed culture technology of pond fish lotus root is to divide the hardened lotus root pond into small grids of 2-4m2, and plant lotus root in the lattice, the average yield of lotus root per mu is 5000 kg, the yield of fish is 400-450kg, and the net benefit is more than 10, 000 yuan per mu. This technology can make use of barren pits, barren beaches, river beaches and scattered corners to build mixed culture of pond fish and lotus root. It has the characteristics of small investment, low cost, quick effect and high benefit. It is suitable for the development of thousands of rural households, and can not only increase economic income, but also improve the market.
2019-01-15 -
Pay attention to fishing in autumn
First, choose a good fishing time. When fishing, choose before and after dawn when it is sunny and the fish do not float their heads. At this time, fishing has the least impact on pond fish, and the fresh fish caught can be supplied to the morning market in time. When haze, muggy weather and pond fish have floating heads or fish diseases, it is not appropriate to draw nets to catch fish, so as not to cause a large number of dead fish and cause unnecessary economic losses. Second, stop eating or feeding less before capture. Stop eating or reduce the amount of feed the day before fishing, and do not feed a large amount of concentrate to increase the weight of fresh fish on the market. Because of
2019-01-15 -
Fish fingerling cultivation in autumn
The range of water temperature in autumn is between 20-30 ℃, which is a good time for fish growth, especially for fish species with small size and poor physique, which is the fattening season, so farmers must strengthen the cultivation of fish species. 1. Disinfect and clear the pond and transfer to the new pond: the old fish pond that breeds the fish species. After several months of feeding in spring and summer, the water quality gradually ages, the dissolved oxygen and food organisms decrease, and the number of pathogenic microorganisms increases, which will stagnate the growth of the fish species. Grass carp are more likely to get sick in such old ponds. At this time, the fish species should be transferred to the new pond to strengthen the cultivation. Where there is a shortage of water
2019-01-15 -
Factors affecting the efficacy of fishery drugs
The main results are as follows: 1. the dosage and the effect of the dosage form of the drug vary with the dose, and even change qualitatively, for example, when the gold convergent drug zinc sulfate is used locally, the low concentration has the effect of convergence and the medium concentration has the stimulating effect. However, it has corrosive effect at high concentration. If the dosage form of the drug is different, even in the case of the same drug dose, the intensity, effect and time of action are also different. 2. the mode of administration, the way of administration, the time of administration, the times of administration and repeated use of drugs.
2019-01-15 -
Pelteobagrus fulvidraco and soft-shelled turtle make a net profit of 10,000 yuan per mu.
In recent years, with the breakthrough of special feed and seedling cultivation technology of Pelteobagrus fulvidraco, various culture models such as main culture, mixed culture and captive culture have been applied rapidly. The "18221" pond efficient culture model is to use Pelteobagrus fulvidraco with high economic value to replace the traditional "four big fish" and soft-shelled turtle mixed culture model. This model means to produce 800 jin of Pelteobagrus fulvidraco and 200 jin of soft-shelled turtle in one mu of water surface, with an output value of 20,000 yuan and a profit of 10,000 yuan. It is a typical high-yield and high-efficiency culture model. Its technical points are as follows: one
2019-01-15 -
Operating rules for pollution-free breeding of domestic fish
1. Pollution-free management and cultivation of parent fish 1. The cultivation base requires no three wastes pollution, the atmospheric environment meets the requirements of "GB3095~1996 Environmental Air quality Standard", the soil environment meets the requirements of "GB15618~1995 soil Environmental quality Standard", and the water used for aquaculture meets the requirements of "NY5051~2001 pollution-free Food Freshwater Culture Water quality Standard". two。 The parent fish pond covers an area of 515 mu and a water depth of 1.5 to 2.5 meters. After exposure, the pond is strictly sterilized with quicklime and so on.
2019-01-15 -
Breeding and breeding of traffic light fish
Traffic light fish also known as red lotus light fish, neon light fish, red and green neon light fish, red light fish, Cyprinidae, native to the upper Amazon tributary of South America. Traffic light fish is petite, only 3-4 cm long, but the body color is extremely gorgeous, there is the laudatory name of "queen" in tropical fish, it is one of the most popular tropical fish species. Above the side line of the fish, there is a blue band extending from the eyes to the tail handle, the back turns black later, and the lower anal fin is silvery white in front and bright red at the back. Black eyes, silver blue sockets
2019-01-15 -
Do bighead carp eat phytoplankton?
Bighead carp mainly feed on zooplankton, but also feed on phytoplankton. According to Professor Ni Dashu's research, the average ratio of zooplankton to phytoplankton in bighead carp food is 1: 4.5. Phytoplankton is dominant in quantity, but its biomass is far less than that of zooplankton. On average, one zooplankton is 10 times or more larger than one phytoplankton. Therefore, from the bighead carp feeding habits analysis, phytoplankton occurrence rate is not low, but the main role in nutrition is still zooplankton. According to this situation, the original Guangdong experience still has room for improvement, namely bighead carp and silver carp.
2019-01-15 -
Swim bladder disease
There are signs that the fish cannot control their position in the water, sometimes they can only do their best to rise from the bottom of the water, sometimes they can't get out of the water, or even upside down on the surface. If the disease is not caused by the disease in the affected fish, the problem may be due to the dysfunction of the swim bladder. Such problems are usually limited to deep-bodied fish, especially cyprinid fish. Scaleless fish seem to be particularly vulnerable. The recommended treatment has no effective treatment for this condition. By
2019-01-15 -
Rules for the use of fishery drugs
The use of fishery medicine should be based on the basic principle of not endangering human health and not damaging the ecological environment of the water area, and should be used as much as possible; strictly abide by the regulations of the relevant state departments, the production, sale and use of fishery drugs without production license, approval number and production implementation standard are strictly prohibited. When the disease occurs, drugs should be used for symptoms to prevent the abuse of fishery drugs, blindly increasing the dosage or increasing the frequency of drug use or prolonging the time of drug use. drugs or additives prohibited by the state shall not be used in aquatic feed, nor shall they be used in feed.
2019-01-15 -
Egg Duck breed-Putian Black Duck
The main results are as follows: (1) Origin and distribution are the only black feather varieties among egg varieties in China. It gets its name because the central producing area is located in Jingtian, Fujian Province. Mainly distributed in Pingtan, Fuqing, Changle, Lianjiang, Fuzhou suburbs, Huian, Jinjiang, Quanzhou and other counties and cities. This breed is an egg duck developed under the condition of beach grazing, which is suitable for both soft beach grazing and hard beach grazing, and has strong heat and salt tolerance, especially suitable for raising hard shoals in subtropical areas. (2) appearance features, light, compact and mobile
2019-01-15 -
Treatment measures for vitamin b1 and b2 deficiency in chickens
1. Vitamin B1 deficiency. The chicken head suffering from this disease is depressed backward and its eyes are looking at the sky. Vitamin B1, also known as thiamine, is essential for carbohydrate metabolism in chickens. Nerve tissue carbohydrate oxidation supply energy, such as vitamin B1 deficiency, nerve tissue due to insufficient energy supply, neurotrophic disorders will occur, leading to dysfunction, sick chickens present multiple neuritis. Vitamin B1 deficiency can also slow down chicken bowel motility, intestinal wall relaxation, loss of appetite, growth stagnation. Chickens of all ages can produce vitamin B
2019-01-15 -
To raise pigs well, five major links must be grasped.
The development of pig raising has strong maneuverability and quick results, which is a good way for farmers to increase their income and become rich, but in order to achieve good benefits, we still need to grasp the following five key links: first, seize the opportunity. In the case of continuous market fluctuations in the development of pig farming, we should pay attention to four periods, namely: trough period, development period, peak period and decline period. The trough in the fluctuation of the pig market is the best time for pig farmers to enter. At this time, the prices of piglets and breeding pigs are low, the input cost of developing pig raising is low, and the pig market is gradually moving.
2019-01-15 -
Control measures of vitamin e deficiency in chickens
(a) There should be enough vitamin E in the diet, 10000 international units per ton of feed, antioxidants should be added to the feed, and the selenium content in the feed should be 0.25 mg/kg. (ii) At the time of illness, each chicken was given 300 IU of vitamin E orally or 0.5% vegetable oil in its feed.
2019-01-15 -
Bacterial disease of pigs-Haemophilus parasuis
Haemophilus parasuis, also known as fibrinous serositis and arthritis, is gram-negative bacilli, showing sporadic polyserositis and arthritis. With the development of the world pig industry, the application of large-scale feeding technology and highly intensive feeding, as well as the existence of sudden new respiratory syndrome and other factors, the disease is becoming more and more popular and the harm is more and more serious. In the past two years, it is not uncommon to report that Haemophilus parahaemophilus causes polyserositis and arthritis in pig farms, especially in large-scale pig farms.
2019-01-15 -
How to prevent and cure porcine cysticercosis
After the single slaughter of pigs, there is a transparent capsule on the intestines, like blisters, ranging in size from soybeans to eggs, commonly known as "water bells". If examined carefully, you can see that there is a milky node inside, which is a parasite of domestic animals, which is called fine neck cysticercosis in veterinary medicine. When the dog swallowed the undead Cysticercus cercariae, it protruded the scolex on the mucous membrane of the dog's small intestine, attached to the intestinal wall, and gradually developed into an adult worm-vesicular tapeworm. The adult is composed of 250-300 segments, up to 150-50.
2019-01-15 -
Research Progress on immunosuppressive principle of Porcine circovirus ⅱ infection
Circovirus infection is a newly discovered infectious disease. The infection rate of the disease to pigs is high, and it occurs widely all over the world, and it has become one of the infectious diseases seriously affecting the development of pig industry. Circovirus mainly attacks the immune system of pigs, interferes with and destroys the production and maintenance of immune antibodies to diseases, resulting in a decline in resistance, which is easy to be secondary or complicated with other diseases. In recent years, scholars at home and abroad have done a lot of research on the mechanism of porcine circovirus invading the immune system, in the mechanism of virus replication, cytokines and lymph nodes.
2019-01-15 -
Pathogen characteristics of infectious serositis in ducks
Duck infectious serositis, also known as Riemerella anatipestifer, formerly known as Pasteurella anatipestifer, can be infected by ducks of all breeds, genders and dates, mainly affecting ducklings aged 2 to 3 weeks, with an incidence of more than 90% and a mortality rate of 5% to 75%. The disease is often mixed with duck colibacillosis or complicated with infection. It is characterized by fibrinous pericarditis, pericarditis, pneumocystitis, peritonitis and so on. 1. Riemerella anatipestifer, the pathogen of the disease, is a gram-negative bacilli with no spores and no movement.
2019-01-15