日本高清在线中文字幕网,99精品国产aⅴ,国产成人综合亚洲,国产成人综合亚洲,国产专区91,香港之夜完整在线观看,失乐园155分钟未删减

Asthma is a chronic respiratory infectious disease in pigs. In general, the mortality rate of the disease is not high, but secondary infection often occurs in the epidemic of the disease, which makes the mortality significantly increased. The harm of the disease lies in its impact on the economic benefits of pig breeding, which will seriously reduce the daily gain and feed conversion rate; especially in the intensive high-density feeding conditions, the spread is more rapid and the economic loss is more serious.
At present, there is no effective vaccine available. The cross immunization of healthy pigs was only conducted with the attenuated vaccine and inactivated vaccine. Piglets were first immunized with attenuated vaccine at the age of 15 days and then vaccinated with inactivated vaccine at the age of 30 days. Sows were vaccinated with inactivated vaccine in April and October of each year one week before mating, which had certain effect. The treatment of pig's gasp with intramuscular injection of florfenicol, spectinomycin, lincomycin, etc. Florfenicol has better therapeutic and preventive effect. Comprehensive control measures such as monitoring, immunization, isolation, treatment, elimination and disinfection can be used to control and purify the disease.
The main measures are:
First, the pig farm without the disease shall insist on self breeding and self feeding. If it is necessary to introduce breeding pigs from other places, it shall be strictly isolated and inspected for 3 months. Only when it is confirmed that there is no pig asthma can it be mixed with healthy pigs.
Second, using the recovery sows to cultivate the pigs without specific pathogen and establish the healthy pig group. The sick pigs should be treated in isolation or eliminated, fattened and sold as soon as possible; the good breeding pigs with breeding value should be treated until cured before breeding. In the later period of pregnancy and lactation, the sows were treated with anti Mycoplasma pneumoniae drugs to control the infection. During the period from weaning to 1 month, the monitoring should be strengthened to prevent the piglets from straddling. After the examination, the sows were fed in groups and kept for seed.
Third, the pigs should be all in and out, and the empty circle should not be less than 15 days, and should be strictly disinfected before entering the pigs.
Fourth, strengthen the feeding management and do a good job in health and epidemic prevention. The latest coughing and wheezing immune program of wechat was sent to you as soon as possible. Pig raising technology, pig raising market understanding, pig raising policy and price knowing in advance, pig raising with appropriate increase and decrease of stock, pig raising with no worries, etc. more than 20000 farmers have already added it.
It's cold and dry. We hope that all the farmers will grow smoothly and profitably, and the pigs will grow fast and well!