Aquaculture Lists
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What should be paid attention to in the continuous cultivation of shrimp and rice?
At present, it is the prime time to plant shrimp, and farmers should pay attention to the following points when putting in shrimp: first, to do a good job in the basic transformation of rice fields is mainly to open ditches, strengthen dikes, build a good drainage system, and set up anti-escape facilities. Second, to do a good job of ditch disinfection, it is best to sprinkle with quicklime, with a dosage of 100 jin per mu, and plant shrimp a week later. Third, select the individuals who are mature, healthy and with complete appendages and put them at 3:1 according to the ratio of male to female. Planting shrimp per mu
2019-01-16 -
What does the river eel eat? How to "domesticate"
River eel is a carnivorous fish. Generally speaking, river eels feed on clams, shellfish, clams, fish, shrimp and animal carcasses. In artificial feeding, artificial formula feed can be put in, but the protein content must be more than 45%. River eel is a nocturnal animal, mainly foraging for small natural animals. In artificial feeding, the stocking density is high, which can not be satisfied only by natural bait, so it must be supplemented by artificial feed. At the beginning of feeding artificial feed, the river crab is not used to it and does not come to eat, so it must go through the stage of "domestication" to make it accustomed to eating artificial feed and develop the habit of eating regularly and in a fixed position.
2019-01-16 -
Mote dwarf elephant grass, a fishery forage grass
Mote dwarf elephant grass is a gramineous forage introduced from the United States a few years ago. The grass is perennial, with a plant height of 0.8 mi 1.4 m, short and many nodes, a large number of leaves per plant and strong tiller regeneration ability. It is more hardy, the aboveground part is withered and yellow in winter, and the underground part survives. Sprouting in spring, the temperature begins to grow at about 12 ℃, and likes to grow in places where the soil layer is deep, fertile and moist. This kind of forage grass has high yield and high nutritional value. under good water and fertilizer conditions, it can produce 15,000-20,000 kg of fresh grass per mu, accounting for 8% of the total grass.
2019-01-16 -
Cautions for fish disinfection
① In the production practice, the specific drug disinfection should be determined according to the local epidemic fish disease and drug source; the sterilized containers should be basin, barrel, fish bag, tile jar, etc., and metal products should not be used.② Disinfection time: 8-9 p.m. or 3-4 p.m. on sunny days; long soaking time, thorough killing of pathogens, but long time, insufficient dissolved oxygen in water, will cause fish floating head or death. Therefore, special attention should be paid to the dynamics of fish during specific operations. When the fish in the disinfectant does not tolerate
2019-01-16 -
Principles and methods of medication for prevention of eel disease-oral method
Also known as internal medication, generally, the drugs used are mixed into the feed to make bait, so that Monopterus Albus ingest drugs through the intake of feed, so as to achieve the purpose of disease prevention. The problem with using this method is that usually when Monopterus Albus gets sick, it usually becomes a mass disease, with general loss of appetite or almost complete cessation of food, that is to say, the amount of drugs entering the body of Monopterus Albus is not too large, and the therapeutic effect is not very good. Therefore, it is necessary to take certain technical measures to do everything possible to make the diseased ricefield eel better ingest the bait, such as stopping the feed one or two days before applying the bait.
2019-01-16 -
Common causes of death of fish and its prevention
Due to farmland irrigation and the ebb and flow of the tide, the frequent flow of river water, the increased opportunities for the inflow of polluted water into the fish pond, or the pollution of the fish pond itself and sudden changes in the weather will cause dead fish. In order to enable farmers to accurately identify the cause of death of fish in daily production and management, and to take timely measures to prevent the occurrence of dead fish, this paper introduces the diagnosis and prevention of dead fish in several cases: 1, fish disease and dead fish 1, water condition: the entry and drainage of pond water can only be completed under artificial control, mostly closed.
2019-01-16 -
Steamed fish
Raw materials: 1 white fish (about 800 grams), 5 grams of cooked ham slices, 25 grams of bamboo shoots, 4 mushrooms, 50 grams of pork plate oil, 20 grams of Shao wine, 5 grams of refined salt, 1 grams of soy sauce, green onions, ginger slices, 50 grams of chicken soup. Practice: ① will clean up the fish, put it in a pot of 80% hot water, scrape off the mucus gently with a knife, then rinse off with clean water, and cut off the tail at 3 places on the body of the fish with a knife. ② will put the fish in a pot and put bamboo shoots on the fish.
2019-01-16 -
Treatment of several diseases of Pseudosciaena Crocea
1. White spot disease (stimulating cryptonuclear disease) 1. Pathogen: stimulating cryptonuclei, also known as "marine fish melons", belongs to the ciliate phylum of melons. The body is oval or spherical, and there are uniform cilia on the surface of the whole body. two。 Symptoms: the worm is mainly parasitic on the body surface, gills and fins of Pseudosciaena Crocea. In the early stage of the disease, white spots can be seen on the caudal and pectoral fins of diseased fish. With the development of the disease, the white spots gradually spread to the body surface and Gill, and the white spots increased to form a membrane, commonly known as "white spot disease". Sick fish are restless, or swim in circles along the wall of the pond, or
2019-01-16 -
Key measures to improve the hatching rate of turtle eggs
1. Parent turtles should be more than 5 years old, strong, disease-free and injury-free, active and strong. two。 The ratio of male to female is generally 2: 3 ∶ 1. If the proportion of male turtles is too small, it is disadvantageous to the normal fertilization of female turtles. 3. The time of collecting eggs is generally within 10-30 hours after spawning, and if conditions permit, it is better to collect eggs within 3-5 days after spawning. Generally, eggs should be collected in the afternoon so as not to interfere with laying eggs during the day. Fertilization
2019-01-16 -
Northeast big black Gill beetle
HolotrichiadiomphaliaBates harms beet and all kinds of vegetables, as well as legumes and gramineous crops. (pest identification) taking the larvae as a harm, biting off the roots and stems of vegetable seedlings, causing the whole plant to die, causing lack of seedlings to break ridges; also gnawing on roots and tubers, affecting quality. Adults feed on crop leaves, especially soybeans, peanuts and other crops. The northeast big black Gill beetle belongs to Coleoptera and Coleoptera.
2019-01-16 -
Eel culture must prevent Gill nephritis
Gill nephritis is a disease that does great harm to eel. The epidemic period of the disease is long, which can occur from December to May of the following year. The mortality rate of small eel species can reach more than 50% during the overwintering period. The disease of large size eel is later than that of small size eel, and the disease usually occurs from February to March. If the disease is more serious in autumn, the harm of Gill nephritis in winter is more serious. When the water temperature begins to rise from February to March, it is easy to be complicated with water mildew disease, red fin disease, red spot disease and so on. The disease generally does not occur in ponds with salt in water, that is,
2019-01-16 -
Nile tilapia
Nile tilapia (Oreochromisniloticus) is referred to as tilapia, also called Nile tilapia. It originated in Africa and was introduced in Taiwan Province of China in 1966. The effect of trial culture is good, and now it has become one of the main objects of freshwater culture in Taiwan. In 1978, this kind of fish was introduced successively from Thailand and Nile river systems in mainland China. The results of trial culture for many years show that Tilapia niloticus can adapt to the living conditions of water bodies in most parts of China, grow well and have a good effect on increasing production. At present, there are more than 20 countries in the country.
2019-01-16 -
Fish fillet with honey beans
Cantonese cuisine ingredients: 200 grams of fish meat, 150 grams of honey beans, 10 grams of carrots, 10 grams of ginger. Seasoning: peanut oil 30 grams, salt 10 grams, monosodium glutamate 10 grams, sugar 2 grams, wet cornmeal amount, sesame oil 5 grams. 1. Cut off the old tendons from the honey beans, slice the carrot and ginger, peel the fish meat, cut it into mud with the back of the knife, add a little salt, monosodium glutamate and cornflour, mix well and beat until gelatinized. Place the fish glue in a pan to dry, fry the fish glue over low heat until it is cooked on both sides and shovel into slices. 2. Under the cooking pot
2019-01-16 -
What do you pay attention to in winter?
Remove sundries in the pond before catching In order to do a good job of safe winter fishing, it is necessary to remove sundries in the fish pond, such as stumps, branches, barbed wire, white pollutants, etc. According to the pond conditions, the drainage and irrigation of the fish pond should be done well before fishing; if the water level of the fish pond is too deep, it is inconvenient to pull the net operation, the water level can be reduced to 1-1.5 meters, but immediately after fishing, the irrigation should be more than 2.5 meters to increase the water level insulation, so that the substandard commercial fish can safely winter, so as to keep the next year profitable. The net should be lightly lowered and quickly raised. Remember to lower the net first.
2019-01-16 -
Early production of raw fish-- breeding of parent fish in hot spring water
The profit of selling seedlings early is not high, mainly to win over customers. Raw fish in hot springs? That's right. Recently, a reporter from Southern Rural Daily visited Triangle Town in Zhongshan City and learned that in order to produce early seedlings at the end of the first month of the lunar calendar, a raw fish seedling farm did not hesitate to spend money on breeding parent fish with hot spring water to meet customer requirements and seize the market opportunity. The purpose of this is to promote the gonads of parent fish to mature under natural conditions for seedling production. Liang Guihong, Yurong Aquatic breeding Farm, Triangle Town, Zhongshan City, told reporters that on January 10, 2009,
2019-01-16 -
Fish visceral mycosis
Pathogenic water mold. The diseased fish generally have a bloated abdomen with erythema on the surface of the abdomen. dissecting the abdomen can be seen that the surface of the visceral mass is covered with fine hyphae, and there are erythema in the stomach, swim bladder and liver. Initially infect the stomach, fully develop in the stomach, the hyphae pass through the gastric wall, develop in the abdominal cavity, cause ascites, and invade nearby organs as well as peritoneum and muscles. After the sick fish died, the hyphae protruded from the abdominal wall. Prevention of 100ppm methylene blue can prevent its development, and using it to disinfect fish ponds can reduce infection.
2019-01-16 -
The method of testing the quality of eel seedlings when purchasing eel seedlings
The main results are as follows: (1) Water inspection method: put the purchased eel seedlings into a container, add appropriate amount of open-air water and let them sit for 3 to 5 minutes. (2) Seismic test: remove the eel seedlings floating on the surface after water inspection, then rest quietly for another 3-5 minutes, and hit the container with hands or feet. The eel seedlings of good quality react strongly, and head down, tail up or try to escape; poor quality eel seedlings, slow response, head up, tail down, curling, twitching or belly, etc. (3) Extrusion method: ① uses thumb and
2019-01-16 -
How to improve the utilization rate of idle fish ponds in winter
After merging ponds in winter to releasing summer flowers in the following year, most fish ponds have a free period of about half a year. If they are comprehensively utilized, the utilization rate and economic benefits of fish ponds can be greatly improved. Here are four ways to make use of winter fry ponds. The cultivation of adult fish in winter fallow ponds can not only increase production, but also adjust the "summer shortage" of the aquatic product market. Due to the short culture period and low temperature, the following techniques should be adopted: ① should be released in advance, that is, after the fish species are merged into the pond.
2019-01-16 -
Castration techniques of pigs
Pig castration is one of a variety of livestock, poultry and pet castration techniques, it occupies an important position in veterinary surgery, is an indispensable technology for pig production, this paper briefly describes the pig castration technology. The principle and purpose of pig castration the ancients called testes "potential", so the removal of testicles from male animals is also called castration, which has been used today. Of course, the castration of livestock and poultry includes not only male livestock and poultry, but also female livestock and poultry. Castration of livestock and poultry is the removal of the gonads, that is, removal of testicles or ovaries, castration
2019-01-16 -
Goose plague vaccine
1. Gosling plague Gosling Vaccine this product is made of attenuated strain of Gosling plague virus obtained by many generations of goose embryo. After inoculating 12-14-day-old goose embryo, the infected goose embryo sac fluid is harvested, proper amount of protective agent is added and made by freeze-vacuum drying. Properties: milky spongy loose mass, which dissolves quickly after adding diluent. Use: it is used to prevent Gosling plague. Dose and usage: this vaccine is suitable for emergency vaccination of offspring of unimmunized breeder geese or goslings whose immunity has reached more than 7mur8 Kang after immunization. Indicate the dose according to the bottle label when in use
2019-01-16