Aquaculture Lists
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Studies on the biochemical characteristics of Trichinella spiralis antigen and the immune method of swine trichinellosis
1. Biochemical characteristics of Trichinella spiralis antigens: four kinds of Trichinella spiralis antigens were analyzed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), isoelectric focusing (1EF), two-dimensional electrophoresis and immunoblotting (EITB) for the first time. The analysis showed that the soluble antigen of muscle larva contained at least glycoprotein, lipoprotein, glycolipid protein, simple protein, polysaccharide and esterase isozyme. Two-dimensional electrophoresis showed that there were 122 polypeptide spots, most of which were acidic peptides with molecular weight lower than 67KD.
2019-01-15 -
Prevention of partial fattening of fattening pigs
Some farmers in order to make pigs grow faster, but there is a fat phenomenon of big pigs, why? Growing pigs "eat for energy", so dietary energy will affect feed intake, growth rate, feed efficiency and carcass lean percentage of pigs. If the dietary energy level is reduced to 10.8 MJ / kg feed, the growth rate and feed utilization efficiency will decrease, but the carcass lean percentage will increase; if it is reduced to 8.8 MJ / kg feed, the growth rate and feed utilization rate of pigs will be seriously reduced due to lack of energy intake. Pigs feel very thin. Energy.
2019-01-15 -
Differential diagnosis and Prevention of Newcastle Disease and Avian Influenza in chickens
Newcastle disease and avian influenza are highly contagious diseases caused by viruses, which can occur all the year round and occur frequently in winter and spring. In the chicken industry, two kinds of diseases occur frequently, and the losses caused by them are very serious. The majority of farmers attach great importance to this and strengthen their various prevention and control efforts, but the difference between the two diseases is not very clear. In this paper, the pathogens, clinical symptoms and pathological changes of Newcastle disease and avian influenza are compared as follows. Pathogen chicken plague and avian influenza
2019-01-15 -
Preparation Technology of Ecological Feed
1. Weaning in time and dividing lambs into groups reasonably after 2 months to 3 months of age, the mother and son should be weaned separately, which can quickly restore the physique of ewes, achieve the goal of early estrus, early mating, prolific and high yield, and exercise the independent living ability of lambs in time. The weaned lambs were raised in groups and circles according to the male and female, size, strength and strength, so as to prevent the strong ones from getting stronger and the weak ones from getting weaker, thus affecting the overall development level and uniformity. 2. timely mating and improving the reproduction rate early mating will affect the growth of ewes.
2019-01-15 -
There is a clever way to get rid of a stiff pig.
First, deworming and clearing stomach with trichlorfon according to the pig's body weight of 0.017 grams per kilogram, once a day for 3 days. After 2 days of deworming, 1 kg of quicklime was taken and dissolved in 5 kg of water, and the water supernatant was used to feed pigs once a day for 5 days to remove eggs and various toxins from the gastrointestinal tract. 2. To invigorate the stomach and eliminate food, one tablet of rhubarb soda (0.3 grams) per kilogram of body weight is used, no more than 10 tablets per pig, and feed the mixture once a day, even.
2019-01-15 -
Culture conditions of sea cucumbers
Culture conditions of sea cucumbers
2019-01-15 -
Knowledge question and answer part three: prevention and control of Streptococcus suis
Q: can people be infected with Streptococcus suis and how to prevent it? answer: people can be infected with pathogenic Streptococcus suis. Streptococcus suis type 2 can cause meningitis, septicemia, endocarditis and even death in humans. From the perspective of the way people are infected with Streptococcus suis, a very cautionary fact is that all infected patients have contact with sick and dead pigs, and most patients have wounds on their hands or other parts. People who kill or wash pork are not infected with Streptococcus suis. That's it.
2019-01-15 -
What are the simple ways to control pig lice?
Lice on pigs can be eliminated in the following ways: first, 50% of tobacco, 95% of water, boiled into an decoction sprayed on the body of pigs, can achieve the effect of killing lice. 2. 750 parts of kerosene, 27 parts of soap and 378 parts of water. Melt the soap in hot water and mix well with kerosene. Add water 10 times dilution when used, then spray wine or smear on the pig. Apply 5 grams of 100 parts and 500 grams of wine to pigs once a day for 3 days. In order to completely eliminate pig lice, no matter which one is used
2019-01-15 -
Culture techniques of conch
Culture techniques of conch
2019-01-15 -
Various prevention and control measures of human infection with Streptococcus suis
The main measure to control human-pig severe streptococcal infection is to control the epidemic situation of live pigs, there will be no human infection without the epidemic situation of live pigs, it is also necessary to ban the slaughtering of diseases and dead pigs, and to strengthen the personal protection of butchers and so on. Health education: through publicity and education, pig slaughtering and processing personnel are aware of the harm of exposure to sick and dead pigs, and require them to do a good job of self-protection; improve the ability of pig farmers and butchers to identify pig diseases and diseased pork. Pig farmers are required to take the initiative to report the epidemic situation of sick pigs, dead pigs should be buried or burned on the spot, and it is forbidden to throw them into rivers, ditches, ponds and other water bodies. The masses do not
2019-01-15 -
Prevention and treatment of Clostridium welchii Disease in Sheep
From February to March 2002, lambs less than 2 months old suddenly fell ill in a sheep farm in a city, and less than 2 hours after treatment, they died of ineffective treatment. 1 Clinical symptoms: diseased sheep are isolated, crawling alone, unwilling to walk, weakness and dyskinesia during forced exercise, abdominal swelling, mild symptoms of lying down, difficulty in defecation, acute weight in the other, black and soft stool, mixed mucus and exfoliated mucus, and blood between them. The body temperature of one sheep is 38.5 ℃, the other two are 40.5 ℃ and 4.
2019-01-15 -
The Management methods of Fox in different periods
The Management methods of Fox in different periods
2019-01-15 -
Massage can promote estrus in sows.
In order to make sows give birth regularly, artificial massage can be used to promote sows to be in estrus. After the sow lies emotionally stable by scratching, massage can be performed. 1. First, gently press the neck of the sow with the left hand, clamp the base of the nipple with the middle finger and index finger of the right hand, press the thumb to press the nipple forward and reverse 20 times, until all the breasts of the sow are rubbed once. 2. Under both sides of the front and rear legs, press and knead 30 times with the right thumb in the forward and reverse direction. After 5 minutes, press the body of the sow with your left hand, gently first and then gently.
2019-01-15 -
Beware of heat stress in pigs in July
In July, Anhui Province entered a hot and scorching heat, which issued a heat warning to the pig industry and the breeding industry. With the large-scale intensification of the pig industry, the density of pigs increases, and the breeds of pigs are mainly outside the three, pigs are more prone to heat stress. How to control the summer heat stress of pigs has become one of the important tasks of pig farmers. Heat stress is an invisible killer compared to the epidemic disease, the damage of heat stress to pig farms is often invisible. The most suitable temperature range for fattening pigs is 18 ℃ 21 min, 32-
2019-01-15 -
Feeding and management of foxes before and after mating
Feeding and management of foxes before and after mating
2019-01-15 -
Lay a solid foundation to improve the feeding benefit of growing and finishing pigs
Pig production is the dominant industry of agriculture in our country. Pork accounts for about 67% of the total meat output, and it is an indispensable nutrition for people. Pig manure and urine will play a greater role in increasing agricultural production and the development of organic agriculture. Raising pigs is beneficial to the development of rural economy and the increase of farmers' income. the comprehensive utilization of pigs has great potential and needs to be further developed, and the international and domestic markets of pig products need to be further developed. Therefore, great attention should be paid to the genetic basis, material basis and survival basis of pig production, so as to promote pig production to high yield.
2019-01-15 -
Porcine pseudorabies
The disease is an acute infectious disease of pigs and other animals caused by pseudorabies virus. It is characterized by fever, itching (except pigs) and symptoms of encephalomyelitis. Adult pigs often have recessive infection, with abortion, stillbirth and respiratory symptoms, while suckling piglets generally show neurological symptoms. Pathogen: the pathogen is herpesviridae, herpesvirus type I. The virus has strong resistance, but it is sensitive to heat, formaldehyde, ether and ultraviolet rays. There is only one serotype of this virus. Epidemic disease
2019-01-15 -
Science of feed restriction for young chickens
Under normal circumstances, the feeding of young chickens should be restricted. In the restricted feeding, some chicken farmers think that the less the chicken, the better, and the lower the feed quality, the better. therefore, the supply of young chickens is single, irregular, no plan, no standard, careless management and so on. In fact, this practice misunderstands the original meaning of feed restriction. The purpose of the feed restriction is to control the weight growth of chickens, prevent premature sexual maturity (early birth), maintain the standard time and body weight, slightly inhibit the growth of chickens, and prevent chickens from gaining weight due to overeating.
2019-01-15 -
Symptoms and pathological changes of salmonellosis in ducks
1. Symptoms through infected duck eggs infected with salmonella or out-of-shell ducklings infected with bacteria in the incubator, often with septicemia, often die quickly without showing any symptoms. Older young birds often have a subacute process. Lethargy, drooping head and eyes, drooping wings, loose feathers, significant anorexia, increased drinking water, watery dysentery, fecal adhesion to the anus, fear of cold and close to the heat source or crowding each other. Respiratory symptoms are not common. Ducklings have symptoms such as trembling, wheezing and eyelid edema, and often fall to the ground suddenly and die, so they have "cataplexy".
2019-01-15 -
Treatment of porcine necrotizing dermatitis
Epidemic characteristics: pig necrotizing dermatitis caused by necrotic bacilli, its infectivity is very strong. In the hot and humid weather every year, piglets, shelf pigs, boars and sows are prone to the disease. The disease occurred in the whole litter, and there was interactive infection between piglets and sows, but more piglets were infected by sows. At the beginning of the disease, systemic symptoms are not obvious, severe cases of elevated body temperature, less food or loss of appetite, emaciation, often due to cachexia and death, which is harmful to the pig industry. Features: first, red papules with large grains of rice appear on the skin on the body surface, often scratching, and papules recur.
2019-01-15