The invention provides a
transfer factor solution for
livestock and poultry. Frozen pig spleens are washed clean by use of
distilled water,
cut into small pieces, added with
distilled water free from heat source, subjected to
cell disruption by use of a tissue bruiser and prepared into homogenate; the homogenate passes through a high-pressure
homogenizer under the pressure of 60 kPa and then is added with a flocculating agent for
flocculation; the flocculated homogenate is centrifuged at a
centrifugation ambient temperature of 4 DEG C and at a speed of 7,000 r / min; precipitate is removed; supernatant is left on standby; the supernatant is filtered by use of a microporous filtering membrane 0.45 mu m in
pore diameter, and then is ultrafiltered by use of a
ultrafiltration membrane 5,000 Dalton in molecular weight cutoff so as to obtain a
stock solution; after viruses are removed,
nicotinamide is added as a stabilizer; the
stock solution is subjected to aseptic
filtration by use of the microporous filtering membrane; and the obtained product is added with
glycerol as a heat-resisting protective agent and then is directly and separately packed. The
transfer factor solution can be applied to
livestock and poultry. The preparation method is characterized by directly using the pig
spleen to extract the
transfer factor solution so as to save manpower and materials and improve extraction efficiency. The preparation method combines a heat-resisting protection technique with transfer factors, thereby realizing the normal-temperature preservation of the transfer factors. The transfer factor solution can improve the
disease-resisting capability of organisms, relieve
immunologic suppression and
immunologic tolerance, can play a role in emergency
adjuvant treatment, and makes up for immunization blank after
vaccination before
antibody production.