Preparation method, formula and use method of bovine mycoplasma pneumonia inactivated vaccine
An inactivated vaccine, Mycoplasma bovis technology, applied in the directions of drug combination, bacterial antigen components, respiratory system diseases, etc., can solve the problems of economic loss of cattle industry, lack of preventive vaccines, weak effect, etc., and achieve a certain immune protection effect, Strong pertinence and the effect of improving the ratio of feed to meat
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Embodiment 1
[0024] Preparation method of bovine mycoplasma pneumonia tissue inactivated vaccine
[0025] 1. Select a cow that is diagnosed with mycoplasma bovis pneumonia and is dying, take out the diseased lung, lymph node and spleen, remove the connective tissue under aseptic conditions, and cut it into 10mm pieces 3 For the left and right small pieces, add 1000mL of 4°C pre-cooled physiological saline at a ratio of 1:5 (m / v), and homogenize in a tissue homogenizer to obtain a tissue homogenate;
[0026] 2. Freeze and thaw the tissue homogenate 3 times continuously;
[0027] 3. Filter the tissue homogenate that has been frozen and thawed three times through a 150-mesh filter to obtain about 1500 mL of filtrate;
[0028] 4. After the filtrate was left to stand overnight at 4°C, remove the grease on the upper part, and then centrifuge at 4000rpm for 1 hour at a temperature of 4°C to remove the precipitate, and obtain the antigen solution for preparing vaccines;
[0029] 5. Add 37% forma...
Embodiment 2
[0056] 1. Select cows that are diagnosed with mycoplasma bovis pneumonia and are dying, take out the diseased lungs, lymph nodes and spleens, and store them at -20°C for later use;
[0057] 2. Thaw the organ obtained in step 1, remove the connective tissue under aseptic conditions, cut it into small pieces of about 10mm3, add 1000mL of sterilized saline pre-cooled at 4°C at a ratio of 1:5 (m / v), and put it in the tissue Homogenize in a homogenizer to obtain tissue homogenate;
[0058] 3. Freeze and thaw the tissue homogenate 3 times continuously;
[0059] 4. Filter the tissue homogenate that has been frozen and thawed three times through a 150-mesh filter to obtain about 1500 mL of filtrate;
[0060] 5. After the filtrate was allowed to stand overnight at 4°C, remove the grease on the upper part, and then centrifuge at 4,000 rpm for 1 hour at a temperature of 4°C to remove the precipitate, and obtain the antigen solution for preparing vaccines;
[0061] 6. Add 37% formaldehy...
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