3. Friday Monogastric Sessions dr stuart wilkinson feedworks - targeting, minimising and measuring ab use through water and new mirco dosing feeding tech

1. Targeting, minimising and measuring
antibiotic use| What is Possible?
Stuart Wilkinson|
Feedworks Pty Ltd

2. Challenges – consumers/markets/legislation
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• Increasing compliance and consumer awareness placing
pressure on in-feed medications
• TRUST? – Social Licence

3. Global Trends
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4. Global trends
• Prohibition of antibiotic growth promotants
• Sweden (1986), Denmark (2000), rest of Europe (2006), 75% of the 180 OIE member
nations (2015)
• Decoupling antibiotic prescriptions and sales from veterinarians
• Or price control / margin limits
• Decoupling examples – Spain, Portugal, Sweden, Norway
• No sales margin – Denmark – veterinarian turnover offset by higher number of farm
visits
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5. Global trends – Premixes and antibiotics
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20% reduction in exposure to antibiotics 2011-15
1st step to reducing antibiotic use is to remove from premixes

6. Global trends
• ZnO
• Medical use of ZnO is being phased out
• Antimicrobial resistance concerns
• Environmental concerns
• Opportunity for alternative strategies
• low dose, highly specific Zinc Oxide like HiZox.
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7. Antibiotic Monitoring Systems
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8. Antibiotic Monitoring
• VETSTAT (Denmark)
• Since 2000
• Medicine prescriptions recorded centrally
• Vet prescriptions
• Pharmacies
• Feed mills
• All vet prescriptions recorded < 30 days
• Warning to farms (Yellow card) based on antibiotic consumption
• 9 months to improve
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9. Australian Perspective 2005-2010
• 98% of antimicrobials sold for animals were
used in food animals
• 43% sold for therapeutic/prophylactic reasons
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Industry %
Poultry 49
Pigs 36
Cattle and Sheep 15
APVMA (2014)

10. 2005-2010
• Key findings
• Sales data did not indicate a significant change in the volume (MT) of active
ingredients sold
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APVMA (2014)
Purpose 2005-06 2006-07 2007-08 2008-09 2009-10
Coccidiostat 336.2 302.9 279.3 258.5 327.1
Growth Promotant 47.2 38.2 38.4 23.8 28.9
Therapeutic 271.6 230.4 262.3 199.1 288.0
Total 655.0 571.5 580.0 481.5 644.0

11. 2005-2010
• Delivery of antimicrobials
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Industry %
Feed 76.4
Water 18.4
Injectable 4
Intramammary 0.7
Other 0.6
APVMA (2014)

12. People?
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www.safetyandquality.gov.au www.theconversation.com.au

13. Challenges to Feed Mill Addition

14. Feed mill challenges
• Extra diets
• Bin management
• Cross contamination
• Scheduling
• Run time (batch size)
• Slower response time
• Inventory management
• Feed intake may be reduced on farm
– dosing?
• Transport logistics – wrong silo on
farm?
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15. Alternatives to Feed Mill Addition

16. Alternatives to addition at the feed mill
• Injectable
• Water
• Micro-dosing
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17. Alternatives to addition at the feed mill
• Micro-dosing
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18. Micro-dosing on farm
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Sample Expected (g/MT) Analysed (g/MT) %
1 4.5 3.4 76
2 4.5 4.1 91
3 4.5 4.2 93
4 4.5 4.4 98
5 4.5 4.1 91
6 4.5 4.8 107
7 4.5 4.4 98
8 4.5 3.7 82
9 4.5 3.4 76
10 4.5 4.1 91
Mean 4.06 90.22
Van Barneveld, (2014)

19. Variability in consumption and exposure to medications
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Soraci et al (2014)
• Subordinate pigs ate 22% less feed than dominant pigs

20. Alternatives to Feed Mill Addition | water

21. Water administration benefits
• Reduced treatment time periods compared to in-feed (5x)
• Fast/responsive to situation
• Targeted – single weaner room / half sheds
• Flexible dosing and duration of administration
• Water intake generally continues in response to hyperthermia or
dehydration
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22. Water administration considerations
• Plumbing
• Type of pump
• Solubility
• Dosing rate
• Water consumption
• Volume
• Pattern
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23. Water administration considerations
• Precision at low water flow, pressure changes
• Electric pumps require water meters which vary in accuracy (flow
dependent) and longevity (water quality)
• High water flow with high dose % will withstand peak water consumption
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24. The future?
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25. The future?
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26. Greater accountability and traceability
• Increased delivery via drinking water
• Vaccinations
• QR / Barcode recognition of treatment
• Acidification
• Automatic sanitation post depop.
• Water intake
• Report generated detailing treatment / volume / time / batch etc.
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27. Thank you
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Questions?