Aquaculture Lists
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Diagnosis and treatment of b vitamin deficiency in chickens
The yellow feather breeders and broilers raised by a company in Shenzhen were characterized by inward curling of chicken toes, paralysis of both legs, extreme bending of head to the back of angle arch ("star-watching" posture), dry and cracked skin, rough feathers and white forks, reduced hatching rate of breeding eggs and increased secondary seedling rate, which caused great losses to the production of breeders and broilers of the company. After the treatment test, the preliminary diagnosis is complex vitamin B deficiency, the diagnosis process is reported as follows. 1. The disease process and symptoms
2019-01-16 -
Diagnosis and treatment of Haemophilus parasuis in pigs
1. Clinical symptoms: fever (body temperature 40.5-42 ℃), lethargy, loss of appetite, drinking only a small amount of water, dyspnea, abdominal breathing, cough, red skin, purple ear tips, conjunctival cyanosis, slow walking or reluctance to stand, ataxia. 2. Pathological changes: dissection of dead pigs showed multiple inflammation such as pleurisy, peritonitis, meningitis, pericarditis, arthritis, increased pleural effusion and ascites, lung enlargement, hemorrhage, congestion, adhesion of lung and thoracic cavity, adhesion of epicardium and thoracic cavity.
2019-01-16 -
Summer cooling can increase pig weight gain
Many farmers think that "June pigs do not grow", feed good feed bad a kind, and thus relax feeding management in summer. In fact, as long as the following cooling measures are taken in summer pigs, pigs not only grow meat, but also grow fast.① Flushing water to cool pigs and pigsty floors. Wash the pig, not the head. Timely supply of cold water. After the pig has eaten, give the pig enough clean cold water to drink.③ Feed more green feed. Feed some food with high calorie properly. Take mosquito control measures so that pigs can sleep quietly.
2019-01-16 -
Fluoroquinolones and photosensitivity in ducks
The photosensitivity of ducks refers to the disease of blisters or ulcers in the upper beak and web epithelium of ducks caused by ultraviolet radiation of sunlight after eating substances containing photosensitivity. The disease is characterized by deformation of upper beak and flippers of diseased ducks, exfoliation of keratinized layer and conjunctivitis of eyes. 1. The clinical symptoms and pathological changes of the disease can be seen in all breeds of ducks. the age of onset tends to be smaller, and it occurs evenly in all age groups after 10 to 20 days of age. The morbidity varies, and the mortality rate is generally low (such as secondary bacteria or viruses.
2019-01-16 -
Difficulty of chicken diarrhea caused by four feed inducements
1. The content of salt is too high. In order to enhance appetite and prevent the occurrence of feather pecking and anal pecking, too much salt was added to the chicken feed, which made the chickens drink too much water and often had strong diarrhea. In addition, the excessive amount of fish meal or the added fish meal itself contains too much salt, which can easily lead to excessive salt content in the feed and cause diarrhea in laying hens. 2. The addition of stone powder is too high. Excessive or rapid addition of stone powder in the diet will lead to excessive blood calcium in laying hens, increase the burden on the kidneys, cause kidney swelling, and eventually cause diarrhea. In order to satisfy
2019-01-16 -
Control methods of Swine scabies mites
The affected part of the diseased pig is extremely itchy, rubbing in places such as the railing, and after a week, the skin appears as a needle-sized red blood rash, and forms pustules, resulting in cracked scab, dryness, cracking, serious death, and most of them show dysplasia. Prevention and control methods: strengthen feeding and management, do a good job in the hygiene of pig houses, and keep them clean, dry and ventilated; thoroughly disinfect the houses and appliances contaminated by sick pigs with 2%-5% keliolin solution, and the unsterilized utensils shall not be brought into the pig barn; diseased pigs should be kept in isolation and treated in time; diseased pigs should be treated after treatment.
2019-01-16 -
Harm of Duck Influenza and its Comprehensive Control
Duck influenza is a highly fatal infectious disease caused by influenza A virus, which can infect ducks of all breeds and every day of age. it is the most serious epidemic disease that harms duck industry. 1. Epidemic characteristics in the past, it was generally believed that waterfowl were only carriers of influenza virus and did not get sick. However, since the mid-1990s, ducks have been infected with highly pathogenic influenza virus, which breaks the traditional understanding of duck influenza. Ducks are not only highly susceptible to influenza, but also can transversely infect terrestrial birds.
2019-01-16 -
On the Management of Pigs in Winter
With the advent of winter, the management of pig farms will bring some problems. Diarrhea has become an unavoidable and headache problem in pig farms, and heat preservation will become one of the most important tasks in pig farm management. However, when the problem of pig diarrhea has not been completely solved in many pig farms, the respiratory problem of pigs has come quietly. Like pig diarrhea, pig respiratory disease has become a very headache problem in pig farms in recent years, which has brought great economic losses to the pig industry. Dealing with the problems of warmth and ventilation in pig farms is directly related to the control of diarrhea and respiratory syndrome.
2019-01-16 -
Etiology of chicken infectious anemia
The pathogen of chicken infectious anemia is chicken infectious anemia virus, which is now classified into the family Circoridae. After purification and negative staining, the virus was spherical or hexagonal under electron microscope, without envelope, the virion was icosahedral symmetrical, the average diameter was 25-26.5nm, and the floating density in cesium chloride was 1.35-1.37g/ml. The genome of chicken infectious anemia virus is a single-stranded, circular, covalently linked DNA, which consists of 2300 bases.
2019-01-16 -
Relationship between feed and yellow meat
Yellow fat meat, also known as yellow fat meat, refers to pork carcass fat is brown or yellow, internal organs normal without change, no odor, generally considered to be caused by feed. Yellow fat meat and jaundice meat different, jaundice meat is caused by disease, bile excretion caused by obstruction. Jaundiced flesh not only fat yellow, skin, mucosa, joint capsule fluid, tissue fluid, vascular intima, serosa, tendons and so on are yellow, viscera also appear pathological changes. Yellow fat meat hanging 24 hours after the yellow light or disappear, but yellow jaundice meat does not fade. Yellow fat meat is mostly fed fish meal and cod liver oil to pigs
2019-01-16 -
Do not feed rice soup to cattle and sheep after delivery.
A farmer fed rice soup to the cow after giving birth, which caused rumen acidosis. Fortunately, the veterinarian treated the cow in time without causing any loss. According to the veterinarian, livestock are weak after delivery, so they can feed an appropriate amount of rice soup to replenish nutrition, strengthen muscles and bones, and make cattle and sheep produce more milk. But ruminant cattle and sheep are not, postpartum drinking rice soup is easy to cause rumen acidosis. After the onset of the disease in cattle and sheep, sodium bicarbonate (60g / 100g in cattle, 15g / 30g in sheep) and ginger tincture (80ml / 100ml in cattle) can be used in mild cases.
2019-01-16 -
Chicken sulfonamides poisoning
Among the sulfonamides, especially those that are easily absorbed in the intestinal tract, such as sulfadiazine (S day), sulfamethazine (SM2), sulfamethoxazine (SMM), sulfaquine (SQ) and sulfamethoxypyridazine (SMP), their therapeutic dose is close to that of poisoning. In the prevention and treatment of parasitic parasitic diseases in poultry, sufficient doses and continuous use of drugs must be used in order to be effective, otherwise protozoa are prone to drug resistance. Therefore, there are some factors, such as large dosage or long duration, uneven mixing in added feed and so on.
2019-01-16 -
The main coat color types of pigs
There are many types of pig coat color, mainly due to the different types and distribution of melanin. There are two kinds of melanin, one is true melanin (eumelanin), which exists in black and brown forms, and the other is brown melanin, which exists in yellow and red forms. Melanin is a binding protein, which is contained in all kinds of pigs, but the quantity and distribution are different, such as 0.07% in white Yorkshire pig coat and 6.18% in black pig. The main type of coat color of pigs
2019-01-16 -
Ingenious trick of feed formula for pigs during lactation
During the lactation period, sows need a lot of nutrients to satisfy lactation. During the peak lactation period, the lactation ability of sows is greater than that of feed intake and less than the amount of nutrients excluded from milk, and the body condition of sows decreases rapidly. feeding lactating sows with high quality and high nutrient concentration feed is the best way to solve this contradiction. feed formula 1: table 4, color 3, lactation feed formula 1 avoids the use of large solvent feed such as alfalfa as far as possible. Unified bran, etc. In the formula design of lactation feed, the unknown factor of nutrition is not very important.
2019-01-16 -
Chicken lymphocytic leukemia
Similar symptoms: hepatomegaly, with gray-white nodular, chestnut or diffuse tumors on the surface. (similar to Chicken Cholera, Chicken Salmonellosis, Chicken colibacillosis, Chicken Tuberculosis, Chicken Campylobacter Hepatitis, Chicken tissue trichomoniasis, Chicken inclusion body Hepatitis, Chicken Marek's Disease (visceral Type), Chicken Fatty liver Syndrome, Chicken reticuloendotheliosis) specific symptoms: most of them occur in chickens at the age of 10 weeks; there are also tumor nodules in spleen, lung and kidney, and nodular tumors in bursa of Fabricius. Treatment prescription
2019-01-16 -
Control of Chicken Sclerosis
Chickens hard crop disease, also known as crop obstruction, is caused by chicken crop filled with food and accumulated in the mouth of the second esophagus under the sac, so that food can not reach the glandular stomach for digestion. Adult chickens and chicks can occur, the latter more common. I. Causes of disease. Mainly because the chicken ate a lot of feathers, rope head, dry hard indigestible feed and large pieces of hard food caused. II. Symptoms of disease. The crop of sick chickens is obviously enlarged, hard, depressed, eating less or stopping food. In severe cases, sick chickens show difficulty in breathing, and the comb and meat are purple. Finally,
2019-01-16 -
Theoretical Analysis of Dog breeding
Basically, there are three mainstream breeding theories, namely, inbreeding (Inbreeding), systematic reproduction (Linebreeding) and different systematic reproduction (Out-crossing/Out-breeding). But it should be noted that no matter which breeding theory is used, the same purebred dog must be used for breeding before it can be called purebred dog breeding. Before breeding, you need to know what kind of theory to use for dog breeding.
2019-01-16 -
Technical points of litter division and primary selection of fox, raccoon dog and mink
1 nesting points before nesting, the cage box to be used must first be inspected, damaged and repaired, and then all the cages must be disinfected and set aside. Then wash the required food plates and water boxes and disinfect them and use them after the nests are divided. Young foxes generally divide their nests at 35-60 days old, raccoon dogs at 45-60 days old, and young minks at 40-45 days old. Young animals can not divide their nests prematurely, because their independent living ability is weak, which affects their growth and development, and is easy to cause disease and even death.
2019-01-16 -
How to collect snake venom
First, snake venom collection tools: small glasses, small porcelain plates, poison utensils and so on. The method of collecting poison: grab the snake neck with the right hand and insert the poison container into the mouth of the snake with the left hand. This is the venomous snake will bite the vessel, you can see its venom. This method is easy to operate. The disadvantage is that the dirt in the snake's mouth will mix with the venom and sometimes bring in impurities such as sediment. In order to remove the impurities in the venom, the surface of the vessel is usually covered with a thin film. Adult snakes raised in captivity are usually poisoned once a month or so. II. Processing of snake venom
2019-01-16 -
Prevention and treatment of deer disease: necrobacillus disease of deer
Deer necrobacillosis is a common chronic infectious disease of deer, which is characterized by the injury of hoof and necrosis of skin, subcutaneous tissue, oral and digestive tract mucosa and viscera. 1. The original pathogen of the disease is Clostridium necroticus, which is pleomorphic Gram-negative bacteria, the small ones are spherical and the big ones are filamentous. This bacteria is widely distributed in nature and can be found in animal farms, swamps and soil, as well as the oral cavity, intestinal tract and external reproductive tract of healthy animals. Is a strict anaerobes. This bacteria can produce exotoxin and can cause group.
2019-01-16