Aquaculture Lists
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Occurrence and Control of Silkworm Zombie Disease
Silkworm stiff disease, also known as sclerosis disease, is a silkworm disease caused by fungal parasitism. The bodies of the diseased silkworms dried up and hardened, and hyphae and conidia grew on the body surface. Because of the spores of different colors produced on the outside of diseased silkworm corpses, they can be divided into white muscardine disease, anisoplias disease, yellow muscardine disease, gray muscardine disease and brown muscardine disease, among which white muscardine disease is the most common. There are two ways of infection: contact infection and wound infection. Both of them are caused by spores attached to the surface of silkworm body through air, mulberry leaves and other media, and then drilled into silkworm body to parasitize. If not prevented and treated in time, the infection will be rapid and the mortality rate will be high.
2019-01-16 -
Questions and answers on Gardnerellosis of fox mink
1 how to make sure that the fur animal has an infectious disease? A: ① infectious diseases are caused by pathogenic microorganisms, and each infectious disease has its own specific pathogenic microorganisms. For example, canine distemper is caused by canine distemper virus infection of paramyxoviridae, fox encephalitis is caused by canine adenovirus infection, and mink Aleutian disease is caused by Aleutian virus infection of paramyxovirus family. Pasteurellosis is caused by Pasteurella multocida infection, which needs to be confirmed by pathogen isolation and identification, immunological diagnosis and so on. ② infectious disease equipment
2019-01-16 -
Characteristics and Diagnosis of Donkey Disease
Donkeys and horses are heterogeneous animals belonging to the same genus. Therefore, the biological characteristics and physiological structure of donkeys are basically similar to horses. However, there are great differences between them, so there are also differences in the performance of the disease. Donkeys suffer from diseases, whether internal medicine, surgery, obstetrics, infectious diseases and parasitic diseases are similar to horses, such as common stomach dilatation, constipation, hernia, glandular disease and so on. Because of their biological characteristics, donkeys differ from horses in disease resistance, clinical manifestations, and drug response.
2019-01-16 -
Foxes and raccoons often get sick during pregnancy and childbirth.
From the estrus mating in spring to now, raccoon raccoons have entered the critical stage of pregnancy and giving birth, and their physiological functions have undergone a series of changes and are extremely sensitive to external stimuli, so the incidence rate is extremely high. Recently, many readers have consulted about this. In this regard, the editor specially invited Professor Hua Shufang of the Special products Research Institute of the Chinese Academy of Agricultural Sciences to introduce the prevention and treatment of common diseases during pregnancy and lactation of foxes and raccoons. 1. What are the manifestations of gastroenteritis during pregnancy and childbirth, and how to prevent and cure them? Answer: foxes and raccoons during pregnancy and childbirth
2019-01-16 -
Processing Technology of Special Feed (Silkworm Feed)
The special feed processing technology of Wuxi Scientific Research and Design Institute of the Ministry of domestic Trade (Wuxi 214035, Jiangsu Province) includes three parts: industrial processing of artificial feed for silkworm, nutritional formula and breeding. In the aspect of processing, it is the first to create a new technology of dry heat killing and drying of fresh mulberry leaves, adopting technologies such as micro-comminution, mechatronics, addition of feed active substances, preservative sterilization, molding and packaging, etc. the technical difficulties of raw material preservation and drying, crushing, wet body mixing and long-term preservation of silkworm artificial feed were solved, and the new silkworm artificial feed was produced on a large scale.
2019-01-16 -
Diagnosis of Candida albicans infection in deer
As a conditional pathogen, Candida albicans (Candidaalbicans) can normally exist in human and animal oral mucosa, gastrointestinal tract, anus, vagina, skin and other parts, generally does not cause disease, but when the body is malnourished, vitamin deficiency, long-term use of antibiotics, the probability of Candida albicans infection increases, serious cases can lead to other organ infections and even death. The single infection of Candida albicans from animals is rare, and it is generally mixed infection, because it is not harmful.
2019-01-16 -
Prevention and treatment of common diseases of money tortoise
In the process of raising money turtles, due to the deterioration of pond water and high stocking density. Mixed culture of large and small turtles, improper baiting, freezing injury and summer injury and other causes often cause turtles to get sick or die. 1. Red neck disease pathogen: is an infectious disease, its pathogen may be a virus, may also be a kind of Aeromonas aerogenes. Symptoms: the disease mostly occurs in the plum rain season. The diseased turtle has red spots on the abdomen, swollen throat and neck, elongated neck that cannot be retracted, slow movement, loss of appetite, and slow response. The condition is strict
2019-01-16 -
How to release fish species in winter
1. "five changes" fish ponds. "small ponds" to "big ponds", "dead ponds" to "living ponds", "shallow ponds" to "deep ponds", "leaky ponds" to "reservoir protection ponds", "emergency ponds" to "flood control ponds". When renovating the pond, first release the dry pond water, after exposure to the sun to remove too much silt from the bottom of the pond, leaving only 15~20cm thick. Root out weeds, dredge channels, and raise the ridge of the pond. two。 Clear the pond and disinfect it. The water depth of the pond is 10cm, first of all, quicklime 90kg or 30% chlorine bleach 4kg is used for every 667m2 of water.
2019-01-16 -
Tortoise ectoparasite
Etiology: aquatic turtles and terrestrial turtles are infected by parasites in the wild. The species of parasites are ticks, mites, fleas, leeches and so on. Symptoms: there are worm bodies on the surface of the tortoise and the tortoise is thin. Control method: remove the worm on the surface of the tortoise as soon as it is found. The newly purchased turtles were washed with 1% trichlorfon solution for 2 days. The incidence of artificially raised turtles is lower. The aquatic turtles were washed with 0.7 mg / L copper sulfate solution for 20-30 minutes, and the leeches fell off and died.
2019-01-16 -
Big silverfish
(silverfish) Protosalanxhyalocranius [local name] noodle fish, noodle fish, mud fish. [morphological characteristics] the individual is small, and the body length of the often mailed individual is about 15 cm. He has a slender body. The head is flat up and down. The tip of the kiss is triangular. The lower jaw is longer than the maxilla. The distance from the origin of the dorsal fin to the base of the caudal fin is greater than that to the base of the pectoral fin. Transparent body. There is a row of black pigments on each side of the ventral side. When the male is sexually mature, the anal fin is fan-shaped, with a row of scales at the base, and the pectoral fin is large and pointed. [place of origin, season] is found in both seawater and fresh water.
2019-01-16 -
Nuogan method to improve the efficacy of fish medicine
1. Improve the adhesive. The adhesion of the adhesive should be strong, otherwise the drug is easy to be lost in the water. Standard wheat flour is a better binder raw material. It is best to make pellet bait or ball bait for swallowing fish. 2. Adding food attractant. Fish have a sensitive sense of smell and can still be identified even if 1 gram of alanine is dissolved in 1000 tons of water. For example, the strongly scented Chinese herbal medicine star anise and Angelica dahurica are grinded into fine powder as food attractant, mixed into fish medicine at the proportion of 10%, 20%, or fried.
2019-01-16 -
How to prevent and control diseases of pollution-free fish
Animal and plant symbiosis aquatic plants and fish symbiosis in the same pond, fish rarely get sick. The aquatic plants planted in the fish pond are rice or lotus root, which are in the east-west direction, with a wide row spacing (more than 33 cm), accounting for no more than 50% of the total area of the water body, so that the lighting effect is good, and the water depth depends on the water tolerance of aquatic plants. Rice is generally less than 30 cm, and lotus root can reach more than 50 cm. Farmed fish can be conventional, famous and special new species. Breeding methods can be used for seedling cultivation and adult fish culture. Due to the deposition of residual bait, fish droppings, etc.
2019-01-16 -
Culture of Mysis prawns
(1) in the 1970s, Mysis prawns were cultured in Shantou, Guangdong and Fujian, or collected from natural waters as bait for seahorses; Rizhao Mariculture Experimental ground in Shandong Province used soil ponds to cultivate black and brown bran shrimp and achieved good results. At present, the biology of black-brown prawns has been deeply studied along the coast of Shandong, China; in Japan, common prawns, Japanese prawns, perfect prawns and medium-sized prawns have all been studied in vivo or fishery biology. all these species can be classified as culture species.
2019-01-16 -
Carbon dioxide and carbonic acid assist live fish transport
Carbon dioxide-assisted live fish transport is a new technology that keeps live fish asleep for a long time to reduce transportation costs. When carbon dioxide is used to assist the transport of adult carp, the adult carp must be alternately perfused with carbon dioxide gas containing high partial pressure (27-33KPa) and low partial pressure (13-17KPa). The transportation time can be maintained for about 10 hours, and the mortality rate is very low. The transport of live fish can also be assisted by a mixture of carbon dioxide and oxygen (50:50). At this time, you can go directly to the crucian carp and
2019-01-16 -
How to distinguish high-quality fish species
A look at the specifications of fish species the specifications of the same kind of fish in the same pond should be neat and uniform, with little difference in body length and weight. On the contrary, the overall survival rate of poor fish species with large individual gap and uneven quality is often very low due to predation, mixed germplasm, poor feeding and other reasons. Second, look at the body color of fish species. The body color of fish species is bright and full of luster. Different species and different feeding methods have different body colors. Generally speaking, the back of high quality silver carp should be silver gray, the side of body and abdomen should be silver white, and the body color of high quality grass carp should be light.
2019-01-16 -
The killer of koi: copper and zinc
The author believes that you are not surprised: copper and zinc in the water will kill koi. Of course, this is not news to the author. What the author means is that before you hear the story that copper-connected heaters release large amounts of copper into the water, thus killing all koi, did you think that copper and zinc will kill your koi? Maybe many of us haven't heard such a story yet. Before I tell you this, the author reviews some of his own history. Of course, I have been raising it for quite a long time.
2019-01-16 -
BROOKWORM DISEASE OF LIONFISH
Pathogen: This insect belongs to the family of tube mouth and inclined tube. The back is raised in side view, the ventral surface is flat, the ventral surface of the insect is elliptical or oval, the size is 45-80×29-53um, there is a round cell in the front of the ventral surface, which can expand and contract. There are cilia in the front and back edge of the insect body, and there is a petal like a flower behind the macronucleus. This insect reproduces by division. Epidemic situation: The disease is prevalent in hot weather and mainly harms fry of 20 - 50 mm. Water temperature above 25℃. at high
2019-01-16 -
Dragon-bodied Phoenix tail shrimp
[dish name] Dragon body Phoenix tail shrimp [raw material] 30 fresh sea shrimps, 75 grams of cooked ham meat, 15 grams of salted shiitake mushrooms, 50 grams of winter bamboo shoots, about 10 grams of scallion. [production process] 1, Lentinus edodes, winter bamboo shoots, green onion slices, ham strips; 2, sea shrimp to keep the tail shell; 3, flatten the ham with a knife, place the ham strips horizontally on the meat noodles near the shrimp tail, and then roll up the shrimp tail, that is, dragon body and Phoenix tail shrimp, put in the pan over oil, showing the shape of dragon body and Phoenix tail; 4
2019-01-16 -
Selection and use of fishery drugs
The selection and purchase of fishery medicine "three certificates" should be complete (production license, production approval certificate, implementation standard number), and have product quality certificate. Regular fishery medicine manufacturers have applied for a registered trademark, and the patterns, pictures and words of the trademark are marked on the packaging, labels and instructions, and marked with the words of the registered trademark or the registered mark. The quality of the internal and external packaging materials of fishery medicine should be good. General packaging is marked with instructions for use, commodity name, chemical name, drug composition, content, production approval number, manufacturer name, address, production batch number, production date, period of validity, adaptation
2019-01-16 -
Processing operation points and quality control of mackerel and Pan-Fried Mackerel
Mackerel and Pan-Fried Mackerel are rich in nutritional value, and the content of DHA and EPA is second only to tuna, which can enhance the immunity of the body, and the price is very low, so it is deeply welcomed by consumers at home and abroad. However, mackerel and Pan-Fried Mackerel contain a high amount of histamine acid. When the fish is not fresh or rotten, histamine decarboxylation produces histamine after the decarboxylase produced by bacteria. When histamine is accumulated to a certain amount, people are at risk of poisoning after eating. Therefore, in the processing process, the process conditions must be strictly controlled to ensure product quality. 1. Key points of processing operation
2019-01-16