update on antibiotic usage in the pig sector caroline garvan, veterinary inspector
TRANSCRIPT
![Page 1: Update on Antibiotic Usage in the Pig Sector Caroline Garvan, Veterinary Inspector](https://reader035.vdocument.in/reader035/viewer/2022070415/5697bf911a28abf838c8e9de/html5/thumbnails/1.jpg)
Update on Antibiotic Usage in the Pig Sector
Caroline Garvan, Veterinary Inspector
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Content
• Introduction – Global focus on AB usage
• Surveillance – Usage & AMR
• Promotion of Animal Health
• Prudent Use
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Resistance v Residue
Antibiotic Resistance - Major Public Health Threat
Antibiotic Residues – minimal → No longer Public Health risk
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Commission Action Plan
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HPRA Data 2013
Premix 34.8%
Oral Remedy 30.8%
Injectable 29.4%
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AMR surveillance – Pigs/poultry/cattle
Slide courtesy of Food Safety Authority of Ireland
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AMR SURVEILLANCE – Pigs only
Slide courtesy of Food Safety Authority of Ireland
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Slide courtesy of Food Safety Authority of Ireland
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These substances show much lower levels of resistance and are more in line with the trends observed for the overall data in the first chart – Slide courtesy of Food Safety Authority of Ireland
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DAFM – Pilot study
● Total active medication consumed during the animals lifecycle and it is compared to the average final weight● Two herds with the highest consumption of medication → final weights are both 102kg which are below the average weight of 105.5kg across the herds● Herd with the highest final weight had the fourth lowest consumption of active medication in the study (Slide courtesy of FSAI )
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Improving Animal Health
• Housing environment • Nutrition• Management• Vaccination – prevention• Biosecurity• Veterinary Consultation
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Biosecurity – DISEASE PREVENTION
• External – personnel/vehicles/animals• Internal – Pigs →‘All in /all out’ , washing
/disinfecting/drying houses • Personnel →shower in, dedicated piggery
clothing -limit movement of personnel between age groups, hand & feet hygiene, disinfectant baths, syringes/bottles
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Prudent Use??
● Piglets - creep• Link/1st stage weaners
– Feed mixing / delivery → Targeted ! • 2nd stage weaners → Targeted! • Finishers
– No Withdrawal Period ≠ Prudent Use
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Factors influencing mis-use on some farms
●Viral diseases –PRRS, Circo, Swine influenza• Bacterial infection –real or not• Farmer –’unwilling to stop in feed medication’,
‘Why change –pigs ‘doing ok’!• Multiple vets -evidence of communication
failure→ vet to vet/ vet to farmer• Lack of scientific investigation-costs money -Will I get an answer?
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Prudent use – Feed Mixing• One wet mixer-Sows and weaners
→ if only 1st weaners need treatment→Residue carryover to ‘non target groups’→Result ↑risk of resistant bacteria in herd
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General mixer + satellite tanksProblem solved ???
• Yes/No• Tank feeds 1st stage weaner ----4 week cycle
• Problem—many AB medications licensed to treat for 7-10 days ---NOT 4 weeks--RESISTANCE
• Problem if purchasing or home mixing?--yes• Problem for prescribing vet? ---yes
• Feed mix/delivery systems – change →Target small group for Short Time
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Legislative Changes? - Regulations • Diagnosis – sensitivity testing! • Dosage & Duration of treatment- strict
adherence to datasheet• Ban on preventive use(?) or performance
enhancer• Restriction on usage of CIAs• Prescription for medicated feed – 1 week validity• Prescription can only supply 2 weeks medication
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Progress to date...
Increased awareness of targeted use
Vaccination programmes → usage ↓
Improved biosecurity
?Herd Health Programmes?
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Further Progress needed....
If disease is present: → Right ANIMAL
→ Right DRUG
→ Right DOSE
→ Right DURATION