Economic impact of an epizootic of pseudorabies in a commercial swine herd in Ohio, achieving test negative status and quarantine release by use of vaccination and test and removal.
The effect of pseudorabies in a commercial farrow-to-finish operation on selected production and economic values was estimated. Pseudorabies was first diagnosed in this herd by circle testing done in March 1988, as a required part of follow up from another herd that had been diagnosed with pseudorabies in the area. A pseudorabies virus vaccination program was initiated in the herd at that time. The mean litter size of pigs born alive varied from 9.26 to 10.02 pigs/litter throughout the study period; however, there was a twofold increase in suckling pig mortality and a 2.6-fold increase in nursery pig mortality when the months of the epizootic were compared with pre-epizootic months. In the 6-month period following the epizootic, suckling pig mortality was three-fold higher than that reported in the preepizootic months. Total net loss for this operation was estimated at $99,700 from when the epizootic started until eradication, when calculating losses directly. The major economic losses (76.5% of total loss) were related to suckling pig mortality, which was $16,240 during the epizootic or $24/inventoried sow/week; $19,395 in the 6 months following the epizootic or $3.8/inventoried sow/week; and $40,628 thereafter until eradication 26 months later or $0.37/inventoried sow/week. Nursery pig mortality losses were 12.6% of total net losses; $754 during the epizootic, $357 in the 6 months after the enzootic, and $11,444 thereafter until eradication 26 months later. Sow culling and deaths accounted for 9.4% of net losses that took place from 6 months after the epizootic until eradication.(ABSTRACT TRUNCATED AT 250 WORDS)
Bech-Nielsen
S
S
Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Ohio State University, Columbus 43210-1092.
Miller
G Y
GY
Bowman
G L
GL
Dodaro
S J
SJ
Orloski-Snider
K A
KA
D000818:Animals; D000833:Animals, Suckling; D004196:Disease Outbreaks / Q000191:economics / Q000662:veterinary*; D005260:Female; D006304:Health Status; D008098:Litter Size; D008297:Male; D009820:Ohio / Q000453:epidemiology; D011557:Pseudorabies / Q000191:economics* / Q000453:epidemiology / Q000401:mortality / Q000517:prevention & control; D011996:Records / Q000662:veterinary; D013552:Swine; D013553:Swine Diseases / Q000191:economics* / Q000453:epidemiology / Q000401:mortality / Q000517:prevention & control; D014611:Vaccination / Q000191:economics / Q000662:veterinary*