Aquaculture Lists
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Age identification skills of rabbits
The incisors and claws of rabbits change with age. The incisors of young rabbits are white, short and neatly arranged, while those of old rabbits are dark yellow, thick and long, irregular and sometimes damaged. White rabbit toes are small, the base is red and the tip is white. The toe red of 1-year-old rabbit is equal to the length of white, red is more than white in less than 1 year old, and white is more than red in over 1 year old. Colored rabbits can be distinguished according to the length and bending degree of their toe claws. Young rabbits are short, straight and hidden in the hair of their feet. The eyes of the young rabbit are bright.
2019-01-16 -
Adopt high-quality queen bee
In order to adopt the high quality queen bee, we should mainly consider three aspects: selecting the Chinese bee species with excellent species and production performance, adopting the new queen bee and preventing the degradation of the bee species in use. The queen bee with excellent characteristics is the guarantee of strong colony rearing, and the bee species with strong fecundity, strong population potential, weak bee division, high yield and strong disease resistance (especially resistance to cystic disease) should be selected in the breeding of Chinese bee. A good queen bee can be obtained through the bee species production department, but it must be noted that the introduced queen bee should be able to perform in the production of beekeeping in the use area.
2019-01-16 -
How to calculate the economic benefit of snake culture
The expert said: it is better to raise a good snake than to raise a pig. Due to the decreasing number of wild snakes, the price of snakes on the market has risen steadily year after year, and the price of snakes varies greatly throughout the year, about 2-3 times higher in winter than in the normal season. The beginning of spring is the peak of the rise in snake prices throughout the year. In addition, the price at the beginning of autumn is different from that at the end of autumn. According to the calculation of an artificially farmed female snake, an average of 1018 snakes are bred every year, and as many as 20 snakes are bred. If it is sold as a small snake seedling, the price is about 310 yuan per piece. If you make the breeding small
2019-01-16 -
Loach on the Yellow River Plateau
Common name: Pike origin and delivery period: distributed in the trunk and tributaries of the upper reaches of the Yellow River. Introduction: a large fish of the family Loach. The head and body forequarters are flat, and the tail stalk is low and long. The mouth is large; the lips are narrow and smooth or shallowly wrinkled. It must be of medium length. The lower part of the unbranched dorsal fin hardens. The body is scaleless and the skin has short rod-shaped cortical prisms. Living in gravel sediment rapids, carnivorous. From April to May every year, when the river melts ice, it spawns against the current, which has a certain economic value.
2019-01-16 -
Breeding techniques of parent fish in silverfish culture
1. The source of parent fish. Sexually mature individuals caught in the breeding season can be used for artificial reproduction; sexually mature individuals can be used for artificial reproduction; individuals that are not sexually mature shall not be used for artificial reproduction. two。 The fishing of parent fish. The fishing of large silverfish should be carried out during the peak spawning period. fishing can be started in the north of the Yellow River in early December and in the south of the Yellow River from mid-December. Fishing gear can be Gill net (mesh 2a is 1.5-2.4 cm) or ice
2019-01-16 -
Technical measures of rice-fish rotation
To make preparations before raising fish, we must first raise and strengthen the ridges of the fields. Combined with the seedling or whole field of early rice, the ridge of the field should be heightened and widened as the basis of the later stage. After the harvest of early rice and the return of late rice, the ridge should be raised to more than 1.5 meters in time, and the width of the ridge should be about 1.2 meters. Secondly, it is necessary to do a good job in temporary recuperation ponds. The temporary pond is excavated in a corner of Honda, with an area of 15% to 20% of the size of rice fields. The depth of the temporary pond is about 1 meter. Finally, a drainage ditch was opened at a convenient end of the field to prevent the flood from rushing into the pond and causing the fish to follow the water.
2019-01-16 -
Fried shredded fish with knife in white
[features] the fish silk is white, with three silk tones and white fried fish shreds, the color is pleasing to the eye, soft and tender lubrication, delicious and delicious, it is a delicacy in early spring. [raw material] 300 grams of knife fish. 10 grams of mushrooms, 100 grams of leafy green vegetables, 20 grams of egg white, 15 grams of ham. Shao wine 20 grams, onion and ginger juice 10 grams, refined salt 2 grams, water starch 15 grams, monosodium glutamate 1.5 grams, lard 500 grams (actual oil consumption 100 grams). [production process] knife fish clean, batch two sides of fish, skin down
2019-01-16 -
crab fin in soup
Ingredients: steeped shark fin Ingredients: shrimp glue, crab meat soup Practice: shrimp glue mixed crab meat shark fin stewed on top, put into steamer, 15 minutes later, take out and pour into soup stew for 10 minutes. Serve. Features: Fresh taste, refreshing taste
2019-01-16 -
Five ways to prevent crocodile turtles from killing each other
Crocodile turtles, native to North and Central America, are strong and aggressive, and are a unique species of turtles. Crocodile turtles are famous for their high reproduction rate, fast growth, high meat production and delicious meat, which has been favored by the majority of farmers and has been promoted and raised in many areas with considerable economic benefits. However, in the process of artificial high-density culture, crocodile turtles kill each other because of their nature, environment, feed, mating and other reasons, and the survival rate is not high. To solve this problem, Zhejiang Province
2019-01-16 -
Rice sprouts are good fodder for fish
After germinating, the grain is fed to fish, which has the advantages of wide raw materials, simple preparation, rich nutrition, strong palatability, convenient feeding and low cost. In addition, it can also alleviate the contradiction between concentrate feed and green feed shortage, which is a fishery feed worthy of popularization. Grain sprouts are rich in vitamins and carotene, fish with grain sprouts can promote the transformation and metabolism of fish nutrients, and enhance skin antibacterial ability, especially for grass carp, carp, bream and other feeding fish prenatal cultivation has important significance, can improve the spawning rate, fertilization rate and survival rate. Xianjianggu
2019-01-16 -
Salmon (red wen-yu)
The original name striped fish, as early as the end of the Ming Dynasty, when the goldfish was raised by the pond into the basin and tank, the color of the goldfish gradually increased. In order to distinguish it from the original goldfish, it was called "striped fish" with the meaning of pattern on its body. This is recorded in the rest of Kao Bo in the Ming Dynasty. It is characterized by a short, wide, triangular body with a pointed head like a mouse's head; it is the earliest species in the language with well-developed fins, which evolved directly from grass goldfish. Japan's red gold comes from Chinese red fish, which was originally only red, but it has been cultivated year by year to increase its color.
2019-01-16 -
Measures to strengthen autumn breeding of fish species
Autumn water temperature is generally between 20~30℃, it is a good time for fish growth, if autumn does not grasp the breeding of fat fish species, to the cold winter, most fish species will die due to thin physique, the average survival rate is often less than 60%. Therefore, strengthening the autumn cultivation of fish species is a top priority for farmers. The specific cultivation measures are: disinfecting and clearing the pond, transferring to the fish pond where the fish species are cultivated in Xintang. After several months of cultivation in spring and summer, the water quality is gradually aging, and the dissolved oxygen and food organisms are reduced.
2019-01-16 -
Sand disinfection method for hatching turtles and soft-shelled turtles
In recent years, with the rise of artificial breeding of turtles, how to improve the shell emergence rate of juvenile turtles has become an urgent task. Because some turtle and soft-shelled turtle farms follow the traditional old method, using unsterilized sand as a carrier for hatching eggs, they do not realize that unsterilized sand contains a large number of bacteria and pests, which often pollute and scrap hatching eggs, and some farmers fail as a result. In the practice of raising turtles and soft-shelled turtles for 21 years, I have found out the method of disinfecting sand and improved the hatching rate. Now I introduce several very practical disinfection methods.
2019-01-16 -
Mycosis of swim bladder
The pathogens are half-known subphylum, coelospora, grass stem mildew. The mycelium is branched and diaphragm, about 50 μ m ~ 100 μ m long and 2 μ m ~ 3 μ m wide. The new culture on Sabru Agar was light yellow, gradually changed to light pink with aging, and finally black, resulting in conidia, which produced colorless and transparent conidia. The symptoms of diseased fish are mostly fry and fingerling, swimming imbalance, anal swelling, fin bleeding and skin damage. In the early stage, only the swim bladder was damaged, and some 1 mm ~ 2 mm white appeared at the front of the swim bladder.
2019-01-16 -
Spicy fat sausage Fish Filets in Hot Chili Oil
Fat sausage Fish Filets in Hot Chili Oil materials: fat sausage, anchovy, Pixian beans, ginger, onions, garlic, dried chili, sesame oil, lettuce, garlic seedlings, parsley. Practice: fat sausage is washed by a special method and cut into small sections; fillet into fish fillets, pickled with salt, yellow wine and shredded ginger, pickled in a separate plate, lettuce, etc. stir-fry; stir-fry with ingredients in the pan, add head and tail, fish fillets and fat sausage, and cook them in a secret sauce pan. Features: it is more common in Fei Chang and Fish Filets in Hot Chili Oil to "fight alone". Now they are combined into one furnace.
2019-01-16 -
Beiqi raw fish soup
Ingredients: 20g of Beiqi, 450g of raw fish (1 or 2), 3 enucleated red dates. Practice: 1, Beiqi, red jujube wash. 2. Wash raw fish after slaughter and wipe dry. Heat a flat wok or Chinese wok, pour 1 tbsp oil into the wok, put down the raw fish, fry over low heat until yellowish, serve. 4. Put 5 cups of water or an appropriate amount into the pot and bring to a boil, add raw fish, Radix Astragali and red dates to the boil, simmer for 3 hours, season with salt. Features: Beiqi can replenish qi and solid surface, clear deficiency fire, and strengthen spleen.
2019-01-16 -
Live fish can be kept fresh by acupuncture
A marine biologist in Japan has invented a method of keeping live fish fresh by acupuncture. This method uses the acupuncture technique of traditional Chinese medicine, in which the needle is inserted into the brainstem nerve point of the fish, and the live fish goes into a dormant state after a few minutes. According to the experiment, after the live fish is dormant by acupuncture points, it can be dormant for about 10 hours, and the body in the dormant state enters the lowest maintenance state and will not deteriorate and stink. In this way, it can keep fresh without freezing.
2019-01-16 -
Prevention of fulminant hemorrhagic disease in fish
In autumn, with the rapid growth of fish and the increase of pond culture density, the water quality is easy to deteriorate, and the reproduction speed of various pathogenic pathogens is accelerated, which easily leads to the occurrence of fulminant hemorrhagic disease. Preventive measures are as follows: 1. Before entering the pool, the seedlings must be disinfected by soaking in 1%-2% salt water. The soaking time depends on the constitution and temperature of the fish. When conditions permit, the fingerlings can be soaked with fulminant hemorrhagic vaccine. 2. Change water and oxygenation in time. Keep the water fresh and change it frequently. If the conditions limit the inconvenience of changing water, raw stone can be used.
2019-01-16 -
Prevention and control of beetles
The beetle, commonly known as "Cang insect", is a generation every year, which mainly harms poplar, willow and other plants, larvae harm roots and adults feed on leaves. According to the investigation and statistics of the Forestry Bureau of our county, the harm of beetles accounts for a large proportion of flower and tree diseases and insect pests in our county. Prevention and control methods: 1. Artificial control: make use of the false death of adults to vibrate branches in the evening to kill landing adults. two。 Physical control: make use of the phototaxis of adults, hang black light to trap and kill adults at 7-10:00 in the evening. 3. Horticulture
2019-01-16 -
Disease and enemy damage of fish and its control methods
Cyanobacteria diseases: cyanobacteria, including Microcystis aeruginosa and Microcystis aeruginosa, generally occur in summer and early autumn, it likes to grow in high temperature and alkaline water, when the pH is 8-9.5, the water temperature is 28 ℃-32 ℃, the reproduction is the fastest. For example, when there are more than 500000 groups in a liter of water, the dissolved oxygen in the water is often insufficient for its needs, and a large number of people will die. After the death of the algae, the protein is easy to decompose and produce toxic substances such as hydroxylamine and hydrogen sulfide, which accumulate in the water, which can not only poison fish, but also cattle and sheep drink this.
2019-01-16