| Table 1. Mortality Losses for Swine Production % | ||||
|---|---|---|---|---|
| Stage of growth | Average weight Lbs | Performance of hogs | ||
| Excellent | Good | Poor | ||
| Birth to weaning | 6 | Under 10 | 10 - 12 | Over 12 |
| Nursery | 24 | Under 2 | 2 - 4 | Over 4 |
| Growing-finishing | 140 | Under 2 | 2 - 4 | Over 4 |
| Breeding herd | 350 | Under 2 | 2 - 5 | Over 5 |
| Source: Pork Industry Handbook - 100 | ||||
Step 1. Calculate annual pig production.
Number of pigs born (pre-weaning):
______________ x ______________ x ______________ = ______________ pigs born/yr.
# sows litters/yr. pigs/litter
Number of nursery pigs raised:
______________ - (______________ x ______________/100 ) =______________ nursery pigs/yr.
pigs born/yr. pigs born/yr % weaning loss
Number of hogs finished:
______________ - (______________ x ______________/100 ) =______________ finished hogs/yr.
nursery pigs/yr. nursery pigs/yr. % nursery loss
Step 2. Calculate death loss material to be handled.
______________ x ______________ Lbs x ______________/100 =______________ Lbs loss/yr.
# sows Avg. Wt. % sow loss
______________ x ______________ Lbs x ______________/100 =______________ Lbs loss/yr.
pigs born/yr. Avg. Wt. % loss pre-weaning
______________ x ______________ Lbs x ______________/100 =______________ Lbs loss/yr.
nursery pigs/yr. Avg. Wt. % nursery loss
______________ x ______________ Lbs x ______________/100 =______________ Lbs loss/yr.
finished hogs/yr. Avg. Wt. % finishing loss
Total death loss (add up group losses) =______________ Lbs loss/yr.
Average daily death loss = ______________ Lbs/yr. /365 =______________ Lbs loss/yr.
total death loss
Step 3. Calculate annual sawdust requirements.
Calculations shown assume that no finished compost is reintroduced to primary compost area.
Alternatively, up to 50% of the sawdust needs can be replaced by finished compost.
Sawdust required = ______________ Lbs loss/yr. x 0.0037 =______________ Cu yards/yr.
total death loss
Fact Sheet AEX 713-97 | Forward