Anoxia - applying the technique

www.anoxia.eu

Presentation 3

The Anoxia technique:Small-scale Anoxia applications

For more information: www.anoxia.eu

Anoxia Applying the technique

Presented by the N2GF team

1For more information: www.anoxia.eu

Anoxia: High expansion foam

– The Anoxia method is unique for creating an environment without oxygen under atmospheric circumstances

– High expansion foam is produced by mixing nitrogen and a mixture of water and specially developed high expansion detergent, with an expansion rate upto 1:1000, meaning that 1 litre of water/foam agent mix expands up to 1 m3 foam.

– Due to the specially designed foam generator, the high expansion foam bubbles are filled with a > 99% concentration of nitrogen

– The oxygen level surrounding the animal drops from 21% in atmospheric air to < 1 % once the animal is submerged in the foam


• Atmospheric air contains 21% oxygen, 78% nitrogen and 1% other gasses, mainly carbon dioxide; the animal needs a constant supply of oxygen to the brain

• Applying Anoxia foam, the oxygen is replaced by nitrogen, raising the nitrogen level to > 99% and lowering the oxygen level to < 1%

• The natural reaction to sudden lack of oxygen is rendering quickly into unconsciousness, causing behavioural indicators like loss of posture and convulsions

• Unconscious animals are insensitive to perceive unpleasant sensations like pain

Anoxia: convulsions, but no stress or pain


Anoxia: How Anoxia foam is created

• A mixture of 97% water and 3% high expansion foam agent is sprayed into the Anoxia foam generator, creating a thin film on the outlet of the generator

• At the same time, nitrogen is added with overpressure into the foam generator

• The nitrogen expands when it exits the generator, creating robust high expansion foam

• The high expansion foam bubbles are filled with > 99% nitrogen


Anoxia: Single foam generator systems

• In practice, one Anoxia foam generator creates a volume of up to 750 liter of high expansion foam per minute

• This volume is more than sufficient to fill a wheelie-bin container within 30 seconds

• The most common container volumes are: M size - 240 liter; L size - 340 liter; and XL size - 370 liter

• The choice of the volume of the container depends of the size of the animal and/or the number of animals that need to be stunned/killed

• A lid with a chiffon that seals the container

• As soon as the foam exits the chiffon, the gas supply is stopped and the chiffon is closed. The nitrogen gas concentration in the container remains at 99%



Anoxia: Capacity of the M size container system

Farm type

• Small-size Pig production farm

• Small-size free-range poultry/ duck/ geese farm

Consumption

• Gas consumption per filling; 240 liter / 19 sec

• Detergent consumption per filling: 0,01 liter

Capacity

• 5 piglets per filling 0 – 2 days old, average weight 1,35 kg

• 2 birds per filling average weight 2,5 kg

• 1 bird per filling average weight 6 kg


Anoxia: Operational costs of the M size system

Investment M-size system ex costs: € 3,500 ex VAT

Running costs:

Pig growing farm

• 1 x per week – 5 piglets per filling; € 0,59 per piglet


Free-range poultry farm, using bottled gas

• 1 x per week; € 2,94 per week



Anoxia: Capacity of the L size system

Farm type

• Medium-size Pig production farm

• Medium-size poultry/ duck/ gees farm

Consumption



Capacity

• 10 piglets per filling 0 –2 days old, average weight 1,35 kg)


• 1 bird per filling average weight 6 kg – 10 kg


Anoxia: Operational costs of the L size container system

Investment foam generator ex costs: € 3,900 ex VAT

Running costs:

Pig growing farm







Anoxia: Capacity of the XL size container system

Farm type

• Large-size Pig production farm

• Large-size poultry/ duck/ gees farm

Consumption



Capacity

• 15 piglets per filling 0 – 2 days old, average weight 1,35 kg





Anoxia: Operational costs of the XL size system

Investment foam generator ex costs: € 4,200 ex VAT

Running costs:

Pig growing farm

• 1 x per week –15 piglets per filling; € 0,27 per piglet





The Anoxia technique:A good way to demonstrate your corporate responsibility


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Anoxia - applying the technique