Table 4.
Variables used for cost-benefit analysis
| Items | SO in 2008 | SV | ||
|---|---|---|---|---|
|
|
|
|||
| Value | Source | Value | Source | |
| ① Vaccine cost (VND/head) | 0 | - | 40,000 | Expert opinion, 2013 |
| ② Total pig population (head) | 28,900 | Field survey, 2012 | 28,900 | Field survey, 2012 |
| ③ Average body weight of culled pigs (kg) | 50.1 | Field survey, 2012 | 50.1 | Field survey, 2012 |
| ④ Market price of finishing pigs (VND/kg) | 38,000 | MARD1 | 38,000 | MARD1 |
| ⑤ Number of culled pigs (heads) | 2,441 | Field survey, 20122 | Equation (10) | SIR model |
| ⑥ Number of vaccinated pigs (heads) | 0 | - | Equation (9) | SIR model |
| ⑦ Compensation for vaccine (VND/pig) | 0 | - | Equation (3) | CE |
| ⑧ Compensation for culling (% of market price of cull pigs) | 70 | Field survey, 20122 | Equation (3) | CE |
| ⑨ Loss of PRRS infection (Million VND) | 1,590 | Field survey, 20122 | =③×(④–⑦)×⑤ | SIR model |
SO, stamping out; SV, strategic vaccination; VND, Vietnam Dong; MARD, Ministry of Agriculture and Rural Development; CE, choice experiment; PRRS, porcine reproductive and respiratory syndrome.
1
MARD set up the market price of pig (38,000 VND/kg) for subsidy calculation (Regulation No.719, June 5th, 2008)
2
Based on the survey data, in detail refer to Zhang et al. (2013).