How do the immunization methods differ for different types of pigs?

Immunization of replacement gilts. Replacement gilts should be vaccinated with the following vaccines 1 month before mating, and sows after weaning should be vaccinated as follows: (1) Swine fever vaccine, 4 doses per head. (2) Swine erysipelas and swine pasteurellosis combined vaccine, 1 dose per head. (3) Swine Japanese encephalitis vaccine, 1 dose per head. (4) Porcine parvovirus vaccine, 1 dose per head (the inactivated vaccine can be given twice, with an interval of 15 days). (5) Swine pseudorabies vaccine, used according to the instructions.

Immunization of farrowing pigs. Farrowing sows should be vaccinated with the following vaccines 15-40 days before farrowing: (1) Piglet Escherichia coli quadruple vaccine (K88, K99, 987P, F41). (2) Swine atrophic rhinitis vaccine, 2 ml per head 35 days and 15 days before farrowing. (3) Swine streptococcus vaccine, 1 dose per head 30 days and 15 days before farrowing. (4) Anaerobic vaccine, 3 ml per head 30 days and 15 days before farrowing. (5) Swine pseudorabies vaccine, 2 ml per head 40 days before farrowing. (6) Swine transmissible gastroenteritis and epidemic diarrhea combined vaccine (vaccination can begin at the end of September each year and end at the end of March the following year, or be given year-round), used according to the instructions.

Immunization of suckling pigs. Suckling pigs should be vaccinated with the following vaccines: (1) Swine fever vaccine, pre-suckling immunization, 2 doses per head, nurse 1 hour later. Double-dose immunization, 4 doses per head, given at 20 days of age. (2) Swine erysipelas and swine pasteurellosis combined vaccine, 1 dose per head, given 2-3 days before weaning. (3) Piglet paratyphoid vaccine, 1 dose per head, given 2-3 days before weaning. (4) Swine pseudorabies vaccine, 2 ml per head, given at 28 days of age. (5) Swine atrophic rhinitis vaccine, once at 5-7 days of age and once at 30-35 days of age, 2 ml per head. (6) Swine transmissible gastroenteritis and epidemic diarrhea combined vaccine, intramuscular injection 5-10 days before weaning, 2 ml per head.

Immunization of growing pigs. Growing pigs should be vaccinated with the following vaccines: (1) Swine fever vaccine, at 65-70 days of age, 4 doses per head. (2) Swine erysipelas and swine pasteurellosis combined vaccine, 1 dose per head. (3) Piglet paratyphoid vaccine, 1 dose per head. (4) Swine streptococcus vaccine, 1 dose per head. (5) Swine pseudorabies vaccine, 2 ml per head.