Aquaculture Lists
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Autumn management techniques for fish species
Autumn is the peak season for fish species growth, because it is cold but warm and the water temperature is suitable. The management of fish species in autumn is the direct means to improve economic benefits. The author thinks that the management technology of fish species in autumn should pay attention to the following work. I. Clear the pond in time. After 23 months of breeding fish, the water quality will generally age, natural food will decrease, harmful substances such as hydrogen sulfide and pathogenic bacteria will increase. After autumn, fish species should be transferred to ponds that have been cleared of toxins for cultivation. Where water sources and fish ponds have difficulty in turnover, all fish species can be transferred out of temporary cultivation
2019-01-15 -
Artificial triploid catfish
The common animals we see daily, such as pigs, chickens, dogs and fish, generally contain two sets of genetic carriers, one chromosome, genetically called diploid. Normal sexual reproduction is the process of diploid reproduction. Fish, like other animals, go through the process of breeding and breeding throughout their lives. In pond culture, fish will use the nutrients taken from feed to develop their gonads, namely spermary or ovary, after they grow mature. During this period, the growth of the body will stagnate, which is unfavorable for us to obtain the best breeding benefit. Some fish
2019-01-15 -
Prevention and control techniques of soft-shelled turtle diseases
Trionyx in zoology classification belongs to vertebrate phylum, reptile, turtle order, trionyx family, shell turtle genus. It has strong adaptability to the outside world and strong vitality. It is distributed in temperate and subtropical regions of the world, and it also exists in all parts of China. Turtle is amphibian, breathing with lungs, mainly living in the water, occasionally ashore habitat, or swim to the water layer, head out of the water to breathe. The ecological habits of soft-shelled turtle have three characteristics of happiness and fear. One is to be quiet and afraid of shock, the other is to be happy and afraid of wind, and the third is to be clean and afraid of dirty. Turtle is timid by nature,
2019-01-15 -
Roast prawns
Ingredients: 2 prawns about 500 grams, 5 garlic seasonings: salt 1, 2 tablespoons, cream 3 tablespoons, cheese powder 1 tablespoons preparation method: 1, garlic peeled, chopped, into a bowl, add seasoning to mix well into the sauce set aside. 2. Remove the mashed intestines and wash the prawns, cut them off with scissors, put them on a baking pan, spread sauce on the back of the prawns, and bake them in the oven. Features: shrimp meat is tender and smooth, fresh and salty is suitable.
2019-01-15 -
Culture of adult black fish
Black fish is a valuable freshwater fish with high economic value, which is called "the treasure of fish". It is very nutritious and contains a lot of protein, which is higher than that of chicken and beef. From the point of view of nutrition, black fish is a kind of advanced health food with comprehensive nutrition and delicious meat. Black fish adult fish culture refers to the production process of cultivating fish species into edible fish in small water bodies such as ponds, ponds, cages and so on. There are two kinds of artificially cultured black fish: extensive mixed culture and intensive monoculture. Extensive mixed culture refers to mixed culture with four fish and other fish in fishing ponds. Intensive monoculture
2019-01-15 -
Symptoms of fish poisoning
1. Symptoms of fish population poisoning increase on the water surface, ponds, reservoirs, ditches and other water surfaces in winter, fish pyrethroid pesticide poisoning is easy to occur. After fish poisoning, the population mainly floats on the water surface, drifts with the current, and the fish body is out of balance. At the beginning of poisoning, there is instantaneous excitement, then swimming slowly, slow response to surrounding stimuli, the fish lying still and lying on its side, the tail slowly swinging, the mouth slowly opening and closing, and finally sinking to the bottom of the water to die. It takes a short time from the beginning of poisoning to the appearance of death poison, fish
2019-01-15 -
Aquatic products-- chilled processing technology for fishing tuna
Tuna is a highly swimming marine fish with delicious meat and high nutritional value, so it is deeply loved by consumers, so it has become one of the key fishing targets in various fishing countries. First, the treatment on the deck 1, to avoid blood stasis of the fish: after the fish on the deck, do not let it jump, so as not to cause blood stasis in the body. After congestion, it can cause muscle damage of 5 times the area, especially in the abdomen. The way to deal with it is to put it on the carpet, hold the fisheye with both hands, or hit the fish on the head with a hammer, but be careful not to
2019-01-15 -
Fried fish in fragrant sauce
Practice: (1) buy small fish to defrost, remove scales, internal organs, wash clean. Sprinkle a thin layer of salt and pepper on both sides of the fish, marinate for a while, and dry with a paper towel. Then sprinkle a thin layer of flour on both sides of the fish. (2) heat the pan, put in a little oil and turn it to a low heat. Put the fish in. (3) cover the pot, fry the bottom to a beautiful golden brown, turn it over with a shovel and chopsticks, fry the other side, and put it on a plate.
2019-01-15 -
Incidence and emergency treatment of inferior eel after being put into eel pond or cage
(1) incidence: after the inferior eel was put into the eel box or eel pond, the disease occurred in 2 to 7 days, and a large number of eels died in 12 days. The combination of Chinese herbal medicine and chemical fishery medicine should be used to control the infection. (2) Emergency treatment: ① searches for and removes floating head eel, exposed eel and dead eel 2 times every day; ② changes water once every morning and thoroughly clears the dead eel; ③ searches for and removes sick eel on aquatic plants once or twice every night with electric light.
2019-01-15 -
Introduction of famous products-Ding Fish year
Ding fish year, also known as bearded fish year, is distributed in China's only Ertix River system and Ulungu River system that flows into the Arctic Ocean. Because the body color soon turns black after fishing, it is known as "black fish". Ding fish is a benthic fish, which likes to live in the still water of silt sediment with many water plants, has a strong ability to adapt to the change of oxygen content in water, can live in the waters that common carp and crucian carp cannot bear, often nocturnal activity, strong cold tolerance in winter, and can bury the body in the mud in a dormant state. It is omnivorous and feeds on decaying plant residues and aquatic insect larvae.
2019-01-15 -
Propagation and Greening Application of Celastrus angustifolia
Uncaria przewalskii, also known as Uncaria przewalskii, is a deciduous vine of the genus Celastrus of the family Celastraceae. 1 Botanical characteristics Liana shrubs, tufted or solitary, creeping or twining the trunk rising, 10 to 15m long, reddish brown bark, greenish when young. Branchlets smooth, with hard hooks, long 1.5~2.5mm. Branchlets with short hooked spiny stipules, curved downward. Leaves alternate, elliptic, ovate or rounded, long 4~8cm, wide 3~5cm, apex broad, mucronate
2019-01-11 -
The method of judging the pregnancy of a pug
It is understood that the signs of pregnancy in bitches appear about a week after mating. The specific manifestations are as follows: the vagina of the pregnant female will contract rapidly, and pregnancy reactions such as vomiting and loss of appetite may occur in three or four weeks of pregnancy. on the 30th day of pregnancy, the breast is prominent, the breast is dilated, and the nipple is pink. By touching the position of the womb in the belly of the bitch in the fourth week after breeding, the pregnant bitch can feel an embryo the size of an egg. The management of a pregnant bitch is mainly to prevent her from being infected with the disease and to avoid
2019-01-11 -
Raise silk-haired dogs
Although the silk-haired dog is short, it eats more than other breeds, supplying at least 180 grams of meat a day, and about 250 grams for larger dogs. In addition to meat, you need to give the same amount of vegetarian dried ingredients or sugar-free or low-sugar biscuits. In order to make its coat more supple and shiny, 30 grams of vegetable oil can be added to the feed every day. Every day to make it have a considerable amount of exercise, it is best to take it outside for a walk or let it run at will. Because moderate exercise can increase its appetite and strengthen its physique.
2019-01-11 -
How to better manage snakes in autumn
Snake: prepare for the winter as the saying goes, "when the autumn wind rises, three snakes are fat." This remark accurately reflects the growth of snakes. In autumn and winter, snake farms should pay attention to the following links: 1. September to October is the peak hunting season for snakes, so snakes can store a lot of fat and survive the cold winter safely. and maintain the nutritional needs of the hole the following year, so you have to feed a lot of food. 2. Snakes in poor health can be sold on the market in advance and do not stay until overwintering. 3. Snakes are busy looking for food and opportunities to get out of their holes in autumn.
2019-01-11 -
Brief introduction of raccoon dog varieties and selection criteria
Racoon dogs belong to carnivores, canines and medium fur animals. According to Chinese fauna (1987), racoon dogs in China can be divided into three subspecies, namely named subspecies, northeast subspecies and southwest subspecies: ① named subspecies: from Jiangsu, Zhejiang, Anhui, Jiangxi, Hunan, Hubei, Fujian, Guangdong, Guangxi and other provinces and regions, 50~53cm in length, short coat, brown undercoat, less black hair tips, and no obvious black vertical lines on the back. ② northeast subspecies: from Heilongjiang, Jilin, Liaoning and other provinces, with a body length of 56cm 90c
2019-01-11 -
A dog's cold
[etiology] the main reason is that it is affected by cold, especially when the feeding management is not appropriate, it is more likely to occur. For example, sleeping on a cold night, lying in a cool place for a long time, attacking by thieves, being stimulated by cold water after sweating or wading across the river, and long-term feeding in a cold and humid environment can reduce the mucosal resistance of the upper respiratory tract and promote the occurrence of the disease. [diagnostic points] the sick dog was depressed in spirit, indifferent in expression, irregular in skin temperature, cold at the tip of the ear and nose. Conjunctival flushing or mild swelling, tears, elevated body temperature
2019-01-11 -
Efficient technology of raising fox
Timely prevention, vaccination, pay attention to drug prophylaxis twice a year vaccination, respectively in November to December and June to July after the offspring were separated from milk for 3 weeks, with canine distemper, viral enteritis, encephalitis and other vaccines one by one, and use Shongkexing medicine to deworming foxes in vivo and in vitro. Keep the shed dry and hygienic, wash the water basin and food basin frequently, remove the feces and leftovers from the cage in time, and spray the whole floor and cage with Baidu solution regularly. Scientific feeding
2019-01-11 -
Antler harvesting technique of deer
Pilose antler is an unossified tender horn growing on the forehead of male deer, which has a variety of pharmacological effects. it is a valuable traditional Chinese medicine. There are many kinds of deer antler. Chinese Pharmacopoeia only recognizes sika velvet antler and red deer antler. Timely harvesting of velvet antler is an important link in the production process of deer farms (households), which directly affects the economic benefits of deer production. In this paper, the author introduces the antler harvesting technology of sika deer and red deer. According to the different requirements of the harvested antler, the harvested velvet antler includes two-lever antler of plum blossom, decapitated antler and saw antler of Sanquan antler, and three of red deer.
2019-01-11 -
Raccoon dog variety: Jilin white raccoon dog
The Special products Research Institute of Chinese Academy of Agricultural Sciences, using the mutant white gene in wild coat color (common color type), has successfully bred our existing new color raccoon dog, Jilin white raccoon dog, after 16 years of research. From the phenotypic point of view, there are two kinds of new-color white raccoon dogs: one is that the needles and villi of other parts of the body are pure white except the rims of the eyes, the margin of the ear, the tip of the nose, claws and the tip of the tail; the other is that the hairs and villi of all parts of the body are pure white. Two kinds of white raccoon dogs are of body shape, appearance, habit and multiplicity.
2019-01-11 -
Key technical points of self-breeding and self-feeding management of snakes
Snake self-breeding technology should pay attention to the following points: first, species selection: every spring, strong, fat female snakes should be selected as species, regardless of venomous snakes or non-venomous snakes, generally lay eggs from late June to July. Female snakes should be fed nutritious and calcium-rich food before and after spawning, so that they can eat and drink as much as possible. There is no need to consider whether female snakes mate or not. female snakes can produce fertilized eggs for five years at a time. Second, hatching: in order to prevent the snake eggs from drying up and sinking, the snake eggs produced should be put into the incubator in time for artificial hatching, be sure to maintain the temperature and check regularly.
2019-01-11