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1. (WO2018106115) A METHOD OF PERFORMING A PROCEDURE ON AN ANIMAL INVOLVING STUNNING AND/OR KILLING SAID ANIMAL
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C L A I M S

1. A method of performing a procedure on an animal, said procedure being chosen from

i) gas-based stunning, and

ii) gas-based killing,

using a foam, said foam having a gas composition suitable for performing the procedure;

wherein the procedure is performed using a container (100); and wherein the method comprises the steps of

- introducing the foam in the container (100) and

- performing the procedure;

is performed;

characterized in that the animal is introduced in the container (100) and subsequently the foam is used to expel at least 90% of the air in the container (100) from the container (100) .

2. The method according to claim 1, wherein after expelling the air, the supply of foam is halted.

3. The method according to claim 1 or 2, wherein the container (100) comprises an outlet opening (142) for air, and once the air is expelled the outlet opening (142) is blocked.

4. The method according to any of the preceding claims, wherein the outlet opening (142) is provided with a conduit (140) .

5. The method according to claim 4, wherein the conduit (140) comprises a siphon (141) and air is expelled from the container (100) with foam entering the siphon (141) .

6. The method according to any of the preceding claims, wherein the foam contains less than 2% by vol. oxygen, preferably less than 1% by vol. and more preferably less than 0.5% by vol.

7. The method according to any of the preceding claims, wherein the foam contains gas with a carbon dioxide concentration of less than 2% by vol .

8. The method according to any of the preceding claims, wherein the foam is supplied from bottom (110) of the container (100) towards the top of the container (100) .

9. The method according to any of the preceding claims, wherein the foam contains at least 98% by volume of nitrogen.

10. The method according to any of the preceding claims, wherein the air is expelled within 30 seconds after the nose of the animal is covered with foam, preferably within 20 seconds and more preferably within 10 seconds.

11. The method according to any of the preceding claims, wherein the foam is foam having an expansion factor of at least 350, preferably at least 500, more preferably at least 750.

12. The method according to any of the preceding claims, wherein after the step of expelling at least 90% of the air in the container (100) from the container (100), the foam is subjected to a step of breaking up the foam.

13. The method according to any of the preceding claims, wherein the container (100) comprises a bottom (110), a roof (130) and walls (120) extending from the bottom (110) to the roof (130) .

14. The method according to any of the claims 1 to 12, wherein the container (100) is a bag, the animal is introduced into the bag inside a further container (100) , and the foam is introduced inside the bag and the animal is subjected to the foam until it is unconscious after which the container is opened and the bag is closed.