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The rapid development of large-scale farming has injected a powerful vitality into modern animal husbandry and the development of the rural economy, but it has also brought new issues to the prevention and control of animal diseases. Here are some key points that need attention for the prevention and control of large-scale swine farm epidemic diseases for everyone to discuss.
I. Making vaccines is a necessary measure to prevent and control some malignant pig diseases
1, swine fever vaccine: must do. (The use of spleen lyophytes for self-cultivation and self-cultivation results in relatively high antibody titer and titer, and the use of cell seedlings in purchased pigs is less irritating). At present, most pig farms use 1 piglet, finishing pigs 20 to 28 days old and 60 to 70 days old two exemptions; two kinds of boar immunization program twice a year; 3 breeding pigs once immunized one month before mating; 4 Breeding sows are immunized once the suckling piglet is weaned. (Sow immunity should avoid breeding and gestation so as not to cause placental infections).
2. Pseudorabies Vaccine: Must do. Gene deletion vaccines are recommended. All breeding pigs were immunized once each year in February, June and October.
3. Inactivated Vaccine of Swine Foot-and-Mouth Disease: Use imported adjuvant seedlings. It can be done once each year in April and October.
4. Inactivated vaccine for porcine parvovirus: gilts must be produced at the beginning of production and immunized twice a month before mating, with an interval of 2 weeks.
5. Porcine Epidemic Encephalitis Vaccine: Breeding pigs should be immunized 2 times, at intervals of 2 weeks, before breeding or before the arrival of mosquitoes (from April to May each year) for 45 days. Sows and boars can be injected once a year (from April to May each year).
6. Other vaccines are selected according to local conditions.
Second, pay attention to medication health care, establish a suitable medication health program, can effectively prevent the occurrence of group disease.
At present, respiratory diseases and digestive tract diseases based on immunosuppressive diseases have presented severe challenges to the safety of large-scale pig farms, causing many pig farms to suffer heavy casualties and even total destruction.
The origin of the immunological epidemic disease or the pathogenesis of highly pathogenic blue ear disease is the respiratory system syndrome with mycoplasma and other bacteria secondary infections, so many breeding experts and large swine producers have suffered major economic losses. The common feeling is to control respiratory diseases, which is the key to the success of the farm.
There are many types of respiratory diseases. If vaccines are used, the economic cost is relatively high. Second, there are no mature vaccines available for some diseases. Third, if there are too many vaccines, the growth rate of pigs will be seriously affected and feed remuneration will be reduced. . The fourth is to make too many seedlings, which greatly increases the labor expenditure. Therefore, adding feeds regularly for preventive health care and removing hidden infections of pathogenic bacteria have become one of the five major success factors in swine farms.
The main targets for the administration of health care include: pregnant sows, newborn piglets, nursery pigs and finishing pigs within the range of 2 to 13 weeks of age and 17-18 weeks of age.
Focus on the prevention and control of pharmaceutical care: immunosuppressive diseases and respiratory syndrome.
Since its establishment, Shijiazhuang Lianchuang Animal Pharmaceutical Co., Ltd. has specially developed pig farms and health products for the main diseases of large-scale pig farms. From the birth of piglets to finishing pigs and breeding pigs, there are suitable health care products to protect them. Farm safety.
Third, regular elimination of parasites in vivo and in vitro is an important measure to avoid the spread of various diseases and improve the feed return rate.
1. Successfully control the parasites on the farm:
(1) Blocking parasite transmission from sow to piglet vertically: Sows must be dewormed 15-20 days before delivery.
(2) Prevent pigs from reinfection at the growing and finishing stage, and prevent affecting the speed of fattening and spreading diseases. Must be repelled every 2 months.
2, deworming methods and precautions:
Each time an anthelmintic was used for continuous condimentation for 7 days (the surface parasites could not be completely repelled within 7 days), and the newly hatched piglets could not be dewormed immediately. The sows must be dewormed 15-20 days before giving birth. The commonly used drugs are better than Imiah's "Ivermectin + levamisole compound preparation", which can eliminate all parasites in the body and at the same time. Imidazole can also regulate the immune system of pigs, reduce the incidence of diseases, and spend the same money to do both.
Fourth, it is forbidden to feed moldy and degenerate feeds. Long-term addition of de-moulding agents in feeds can effectively reduce the impact of mycotoxins on pigs.
According to the survey, the contamination rate of mycotoxins in feed and raw materials is as high as 30%-40%. In the south, it is more serious and harmful (maize, wheat, and rice are the best for growth and reproduction of Aspergillus flavus when the temperature is 25°C-30°C, relative humidity is 80%-90%, and the moisture content in raw materials is 17%-18%. condition). It is strictly forbidden to feed moldy and deteriorating feed to ensure the quality of the feed and the quality of the whole price. Mycotoxins can dissolve lymphocytes, inhibit humoral and cellular immune functions, reduce antibody production, impair the function of antigen-presenting cells and phagocytes, inhibit the division of immune cells and protein synthesis, and affect nucleic acid replication. The body's immune response, resulting in pigs with low immunity, decreased resistance to disease.
At present, large-scale pig farms generally adopt long-term methods to add mold-removing agents to reduce the effect of mycotoxins on pigs. Lianchuang Pharmaceutical's latest nano-mildew extract is the best fourth-generation mold-removing agent and is specifically designed to solve the problem of mycotoxin poisoning in large-scale pig farms.
Although China's current hog farming is still based on free-range farming, implementing large-scale farming is an inevitable trend in the development of the hog industry. With the intensified market competition and people’s increasing demand for quality of animal products, it is difficult to adapt to the decentralized breeding of thousands of households, and large-scale farming can increase the economic efficiency and ability to resist market risks, or implement standardized production and raising livestock. The necessary basis for product quality. In short, there are economies of scale, there are markets with scale, and it is imperative to vigorously develop the scale farming of the pig industry.