|
Preventing
medicine feed residues
|
|
1
|
All prescription only medicines should be prescribed by
your Veterinary Surgeon.
|
|
2
|
Only use medicine concentrations and combinations as
recommended by your Veterinary Surgeon.
|
|
3
|
Maintain a good record system to keep track of
medicated feed usage. Medicated feed usage must be
recorded in the medicine book.
|
|
4
|
Purchase feed from reputable feed agencies who maintain
adequate measures to eliminate in-feed medicine
cross-contamination.
|
|
5
|
Clean out or flush - feed bins; conveyors and feeding
equipment to reduce medicine carry over into the next
load of feed. Augers often leave residual feed in their
housing because the screws must have clearance as shown
in figure 1, the residual feed is represented by
shading.
|
|
|
Movement of feed out of a bin occurs directly above the
discharge point. The remaining feed then cascades down
the slope of the crater that is subsequently formed.
Failure to completely empty bins before refilling will
result in residual feed retained in the bin.
|
|
Figure 3 demonstrates the typical feed flow in a feed
bin with shaded areas illustrating where the feed is
most likely to remain and contaminate the next batch.
|
|
|
Feed hoppers may also have residual feed if not
properly managed. Ensure that feeders are completely
empty before refilling. Figure 4 demonstrates the
typical feed flow in the feeder with potential areas of
residual feed remaining between batches. Note each
feeder design will be different.Use bagged feed to
assist the clean out process.
|
|
6
|
Adhere to proper withdrawal periods for all medicines.
|
|
7
|
Prevent recycling of medicines via manure and urine by
adhering to cleaning procedures between groups of pigs.
Prevent slaughter pigs from having access to urine and
faeces from medicated pigs.
|
|
8
|
Read and follow any guidelines provided on all medical
products.
|
© 2000 - 2012. 5m Publishing, Benchmark House, 8 Smithy Wood Drive, Sheffield, S35 1QN, England.