1. Can be used for antigen level detection
At present, in the domestic laboratory diagnosis of swine diseases, most of them rely on the detection of antibody levels. That is, after the pig has been ill for a period of time or died, take samples or disease materials for laboratory testing. Although this can understand the morbidity of pigs, and the degree of infection of pig populations. But there are also disadvantages, that is, it cannot be prevented and the virus cannot be completely eliminated in the early stage of virus infection. Therefore, the early detection of infected viruses is beneficial to the separation and treatment of infected pigs and to avoid the economic loss caused by large groups of diseases.
2. Test the quality of the vaccine
Professional pig farmers or large-scale pig farms must purchase large quantities of swine reproductive and respiratory syndrome vaccines from the provincial biopharmaceutical factory or city (region) veterinary station every year and place them in the freezing layer of the refrigerator in their farm. It is best to buy the same batch number (generally determined by the date of production) each time (for example: pig reproductive and respiratory syndrome vaccine). A bottle of vaccine can be taken from it, and several piglets of different ages of suckling pigs, piglets, and breeding pigs can be selected, and two, three, four, and five pig reproductive and respiratory syndrome vaccines should be used for immunization. 〠Blood is collected 15 days after immunization, and the antibody titer is measured with the gold standard test strip of antibody to porcine reproductive and respiratory syndrome. If each group can produce immune antibodies that resist the violent attack of porcine reproductive and respiratory syndrome, then Choose the best immunization dose from this batch of vaccines with less immune head and high antibody titer. If the tested Porcine Reproductive and Respiratory Syndrome antibody does not reach the minimum protective antibody against the venomous attack, you should check whether it is the vaccine itself or whether there is interference from immunosuppressive viruses (such as circovirus) in the herd. At this time, you can take a different batch of the pig reproductive and respiratory syndrome vaccine of the manufacturer or choose another manufacturer's pig reproductive and respiratory syndrome vaccine, and then perform different doses of immunization according to the above method to determine whether the batch of vaccine is invalid or It is the interference of immunosuppressive virus to determine the appropriate immune dose.
Types of brushes.There are so many many brushes:washes/glazes, rounds, flats, filberts and liners and more. Choosing the right type for the technique is important. Let`s look at the different types.Flat Brushes:Flats are brushes with a straight chisel edge and square shaped filaments. These can be known as shades if they`re in smaller sizes and washes/glazes if in bigger sizes. Large areas are painted with a wash/glaze brush whereas smaller flats are used for small areas of painting. Round brushes-Round brushes have a large diameter of the ferrule, more so than a liner, which can be used for applying thick to thin lines, filling in odd shaped areas, painting details and work great for lettering. Liners don`t hold as much paint as a round, however, they are super great for creating lines or curves. Script liners are similar to liners but the filaments are much longer and hold more paint. A round brush tapers to a pointed tip – several types of rounds are referred to rounds, liners or script liners. Angle brushes are filaments that have been cut on an angle – these are excellent to use in small or curved areas of the painting.Filberts Brushes with oval shaped filaments are known as filberts in smaller sizes and oval wash in larger sizes. Both shapes can be used for base coating, stroke work and more. There are filbert combs, filbert wash and more. Mop Brushes:Then there are mop brushes–great for blending and smoothing out small areas. They`re also ideal for applying powdered pigments–just dust them lightly over hot or tacky wax.Specialty Brushes:Then there are all the speciality brushes on the market used for certain techniques and garner their own results–fan, deer-foot, stumbler, mops,stencil and more.
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