公开(公告)号：US10757948B2

公开(公告)日：2020-09-01

申请号：US15578986

申请日：2016-06-02

Applicant: Teknologisk Institut

Inventor： Helle Daugaard Larsen ,  Leif Lykke ,  Margit Dall Aaslyng ,  Lars Ole Blaabjerg ,  Pia Brandt

IPC: A22B3/00 ,  A61M16/16 ,  A61M16/12 ,  A22B1/00 ,  A22B7/00

Abstract: When stunning animals e.g. by CO2-stunning aversive reactions may be seen among the animals as a reaction to the high concentration of CO2. To avoid the aversive reactions animals can be pre-stunned before being final-stunned and perhaps killed or slaughtered when stunned. Pre-stunning of animals may be performed with a combination of gas for pre-stunning comprising at least air and/or O2 together with CO2 e.g. in a concentration below 40%, at least air and/or O2 together with N2O, or at least air and/or O2 together with N2O and CO2, where CO2 may bi in a concentration below 40%. For larger animals such as pigs pre-stunning is performed for less than 60 seconds. A stunning system may comprise means for pre-stunning of animals before performing a final-stunning and may include gas storage for re-use of the pre-stunning gas.

公开(公告)号：US20180132495A1

公开(公告)日：2018-05-17

申请号：US15578986

申请日：2016-06-02

Applicant: Teknologisk Institut

Inventor： Helle Daugaard Larsen ,  Leif Lykke ,  Margit Dall Aaslyng ,  Lars Ole Blaabjerg ,  Pia Brandt

IPC: A22B3/00 ,  A22B7/00 ,  A22B1/00

CPC classification number: A22B3/005 ,  A22B1/00 ,  A22B7/001 ,  A61M16/12 ,  A61M16/16 ,  A61M2202/0208 ,  A61M2202/0225 ,  A61M2202/0283 ,  A61M2205/84 ,  A61M2250/00 ,  A61M2202/0007

Abstract: When stunning animals e.g. by CO2-stunning aversive reactions may be seen among the animals as a reaction to the high concentration of CO2. To avoid the aversive reactions animals can be pre-stunned before being final-stunned and perhaps killed or slaughtered when stunned. Pre-stunning of animals may be performed with a combination of gas for pre-stunning comprising at least air and/or O2 together with CO2 e.g. in a concentration below 40%, at least air and/or O2 together with N2O, or at least air and/or O2 together with N2O and CO2, where CO2 may bi in a concentration below 40%. For larger animals such as pigs pre-stunning is performed for less than 60 seconds. A stunning system may comprise means for pre-stunning of animals before performing a final-stunning and may include gas storage for re-use of the pre-stunning gas.