Nowadays, large-scale intensive farming is the most mainstream breeding method on the farm . This has a very large improvement in land and management. The efficiency of feeding sows has also improved. However, the relative amount of pigs under intensive feeding is insufficient. A variety of swine diseases come to the door, and respiratory diseases are frequent visitors, so what harm does the pig pneumoniae have on the farm?
Intensive rearing is the main mode of current farming, and it is obvious that intensive farming produces efficient production and reduces production costs. However, this feeding mode undoubtedly brings many problems. Among them, in the case of epidemic diseases, respiratory diseases are easily transmitted to each other in poorly ventilated and relatively crowded or densely-raised pig houses, and M. hyopneumoniae is a common respiratory disease in intensive feeding. .
Teacher He Dongsheng said that the diseases caused by Mycoplasma pneumoniae are common in large-scale pig farms, and the infection rate of pigs is 30-80%. Although the mortality rate of this disease is not very high, it reduces the growth rate and feed utilization rate, and brings about 1 billion yuan of economic losses to the pig industry every year. At the same time, the pathogen accumulates on the endothelium of the respiratory tract, destroying the ciliated cells, causing the body’s respiratory system to prevent loopholes, and easily causing economic losses caused by the infection of other pathogens.
Pigs can be infected at all stages, and concealed bacteria are the biggest bane
This disease can only make pigs sick, and other species of livestock, animals and people are not infected. Pigs of different ages, genders, breeds and uses can be infected.
Suckling piglets and weaned piglets have high susceptibility, obvious symptoms after illness, and high mortality. Secondly, pregnant sows and lactating sows have fewer cases of fat pigs. There are many cases of local soil pigs in China compared with hybrid pigs and purebred pigs.
Sick and concealed pigs are the main source of infection of this disease. In particular, concealed bacteria are the biggest bane. They are often encountered in practical work. Many pig farms introduce hidden pigs because they buy or sell each other. After that, the disease is prevalent. Li Shuke of Foshan Ruibao said that the hidden sick pigs have no obvious clinical symptoms, and the appearance is no different from that of healthy pigs. More importantly, some people are mentally paralyzed and have a greater risk of having a coughing sick pig.
Sick sows often cause contagious feeding of piglets, and mother-child transmission can exist for a long time; in the season of birth, a few litters of piglets are grouped together, or mixed with fattening after weaning, so that the disease continues in the herd. In addition, the sick pig can still carry the disease in the body for a long time, even after the disease disappears for half a year or more, and the pathogen can be discharged. Therefore, once a pig farm is introduced into the disease, it is difficult to purify if it does not make up its mind and adopts strict comprehensive prevention and control measures.
The newly-increased areas are mostly acute outbreaks with high incidence and frequent disease in pigs in the old epidemic areas.
The causes of mycoplasma pneumoniae and the aggravation of the disease are complex, and the main factors include climate, feeding management and sanitary conditions.
Mycoplasma pneumoniae can occur all year round, but it is usually severe in the climatic, humid, and cold winter and spring seasons, and the symptoms are obvious. Since 2016, the climate has changed, and many cold waves have hit. Many pig farms have shown that the incidence of the disease is even more severe.
Post time: Aug-23-2019