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Financial impact of PRRS in weaners
In a study by Polson (37) the financial impact of PRRS in sucking pigs (weaners) was evaluated using a partial budget model.
The basic cost assumptions are shown below. In Table 2, the impact of PRRSV infection and secondary agents in the sucking pigs (weaners) for a farrow-to-feeder farm are shown. The difference between affected and non-affected pigs ranged from US$0.73-18.21, depending on the changes in mortality and average daily gain.
Basic cost assumptions
- Baseline ADG = 363 gm/hd/day
- Baseline FCR = 1.75 kg feed/kg body weight gain
- Weight into nursery = 5.45 kg/hd
- Days on feed = 42 days
- Down-time/turn = 2 days
- Non-feed variable costs/pig = $ 1.00/pig
- Nursery feed cost/ton = $ 220/ton
- Sale price/kg = $ 2.09/kg
Table 2: Pay-off matrix of the impact of PRRS in nursery pigs for a farrow-to feeder pig farm (all values reported on a per head basis)| - 0.0 | - 0.1 ADG | - 0.3 ADG | - 0.5 ADG |
|---|
| ADG | Episode duration | Episode duration | Episode duration |
|---|
| % Deaths | 2 wks | 6 wks | 2 wks | 6 wks | 2 wks | 6 wks |
|---|
| No change | 0.00 | 0.95 | 3.16 | 3.16 | 9.47 | 5.37 | 15.79 |
| + 2% | 0.73 | 1.66 | 3.82 | 3.82 | 10.01 | 5.99 | 16.19 |
| + 7% | 2.55 | 3.43 | 5.48 | 5.48 | 11.34 | 7.53 | 17.20 |
| + 12% | 4.37 | 5.20 | 7.14 | 7.14 | 12.67 | 9.08 | 18.21 |
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