AU3705202A - Method of immobilising animals during slaughter - Google Patents
Method of immobilising animals during slaughter Download PDFInfo
- Publication number
- AU3705202A AU3705202A AU37052/02A AU3705202A AU3705202A AU 3705202 A AU3705202 A AU 3705202A AU 37052/02 A AU37052/02 A AU 37052/02A AU 3705202 A AU3705202 A AU 3705202A AU 3705202 A AU3705202 A AU 3705202A
- Authority
- AU
- Australia
- Prior art keywords
- animal
- nozzle
- spinal
- improved method
- cranial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 241001465754 Metazoa Species 0.000 title claims description 41
- 238000000034 method Methods 0.000 title claims description 20
- 238000003307 slaughter Methods 0.000 title claims description 13
- 210000004556 brain Anatomy 0.000 claims description 9
- 210000001640 nerve ending Anatomy 0.000 claims description 4
- 210000000278 spinal cord Anatomy 0.000 claims description 4
- 230000006378 damage Effects 0.000 description 4
- 230000011514 reflex Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 235000013372 meat Nutrition 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 239000000837 restrainer Substances 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 102100026459 POU domain, class 3, transcription factor 2 Human genes 0.000 description 1
- 101710133394 POU domain, class 3, transcription factor 2 Proteins 0.000 description 1
- 239000010868 animal carcass Substances 0.000 description 1
- 210000004124 hock Anatomy 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000004731 jugular vein Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Processing Of Meat And Fish (AREA)
Description
Regulation 3.2
AUSTRALIA
PATENTS ACT 1990 PATENT OF ADDITION
ORIGINAL
Name of Applicants: Richard Sydney Wigg and Kelie Ann Wigg Actual Inventor: Richard Sydney Wigg Address for Service: MADDERNS, 1st Floor, 64 Hindmarsh Square, Adelaide, South Australia, Australia Invention title: METHOD OF IMMOBILISING ANIMALS DURING
SLAUGHTER
Details of Associated Provisional Application No: PR 4764 dated 4 th May 2001 The following statement is a full description of this invention, including the best method of performing it known to us.
PatAU133 This invention relates to an animal slaughter treatment process, and in particular to a method of immobilising animals during slaughter for the purpose of eliminating or controlling reflex activity. The present invention is an improvement in or modification of the invention described and claimed in our Australian Patent Application No. 15335/00 filed on 9 th November 1999.
A major problem which has always existed during animal slaughter procedure has been the risk of serious injury to the slaughterman as a result of reflex kicking of the animal being slaughtered. Prior to slaughtering, it is normal procedure for an animal to be stunned, eg by means of a mushroom head stunner or a type of bolt gun, following which the stunned animal is placed on a conveyor (or hung therefrom) and the jugular vein opened at the neck to bleed the animal. The animal is then normally laid on a work surface with its legs extending upwardly or it may be keep hanging during the subsequent meat cutting procedure. Throughout this procedure, several workmen are involved, eg the sticker and rodder, head dropper, de-horner and leggers, and there is always the danger of any of these workmen being kicked or buffeted by the dead animal.
It is the main object of the present invention to provide an improved method of slaughtering animals which will eliminate or at least significantly reduce the risk of worker injury as a result of reflex activity of the animal being slaughtered.
It is a still further object of the present invention to provide an improved animal slaughter procedure which results in vastly improved productivity due to the ability of the workmen to carry out their work procedures on the dead animal far more effectively due to the relatively quick immobilisation of the muscles of the animal.
Broadly according to this invention therefore, there is provided an improved method of slaughtering animals which includes the steps of inserting an elongate nozzle into the cranial cavity of the animal and orientating same so that the nozzle is directed towards the spinal cavity, creating suction in the nozzle, and sucking brain 2 and spinal matter from the cranial and spinal cavities of the animal out through said nozzle using a suction device attached thereto.
As the brain and spinal matter are sucked out of their cavities, the brain structure is destroyed and the fine nerve endings attached to the spinal cord are jolted and broken, to thereby effectively immobilise the animal.
Prior to the insertion of the elongate nozzle into the cranial cavity of the animal, the animal is stunned, eg by means of a bolt gun, so as to provide an opening that allows the nozzle of the injector to be inserted into the cranial cavity.
This method contrasts with our earlier invention disclosed in our aforesaid Australian Patent Appln No. 15335/00 in that the destruction of the animal's brain structure and nerve endings attached to its spinal cord is achieved by means of suction rather than injecting pressure fluid into the cranial cavity of the animal. It is considered that destroying the brain and spinal matter by suction rather than by injecting pressure fluid is a safer procedure and will be more acceptable to meat consumers.
In order to further illustrate the present invention, reference is now made to a preferred embodiment thereof, but it should be appreciated that the invention is not necessarily limited to any one or combination of the features described hereunder.
According to this embodiment, an animal is first herded into a device such as a V-restrainer or knocking box where it is stunned using a bolt gun. The bolt of the bolt gun penetrates the cranial cavity with relative ease leaving an almost perfectly round hole with a diameter in the order of The stunned animal is then shackled by placing a shackle chain connected to a roller around its rear right hock. The roller is then placed onto a section of rail, and where a V restrainer is used, it forwardly propels the animal out onto a dry landing table. A mechanised chain gathers the shackle roller and elevates the shackled animal up and onto a bleed rail which is suspended from the slaughter room ceiling. The time taken from the point of the animal being stunned to be placed onto the bleed rail is a minimum of 15 seconds and a maximum of 40 seconds.
Using an injector device of the kind described and illustrated in our Australian Patent Application No. 15335/00, the elongate nozzle of the injector device is inserted into the cranial cavity of the animal via the damaged cranium which has resulted from the stunning procedure. The nozzle is then orientated so that it is directed towards the spinal cavity. By inserting the nozzle into the hole created by the bolt gun, a vacuum can be created within the cranial and spinal cavity, as these two cavities are joined at the atlas joint of the animal. The nozzle is connected by means of an air suction hose to a motorised suction device, with the latter being activated by means of a trigger or button actuator on the injector device.
Once the cranial and spinal cavity of the animal is completely sealed off and a vacuum created, the operator then presses the trigger or button actuator of the injector device so as to produce a suction force, thereby causing brain and spinal matter to be sucked out of the cavities, resulting in the destruction of the brain structure and also the fine nerve endings which are attached to the spinal cord.
The suction pressure needed to achieve the desired result will vary and will depend on how quickly the animal is to be processed. A typical suction pressure would be 100 psi or more.
Once the suction step is complete, the animal is totally immobilised and can be safely worked on by the slaughterman.
The brain and spinal matter sucked out of the animal is disposed of in an appropriate manner.
A brief consideration of the above described embodiment will indicate that the invention provides for an extremely simple and effective treatment for quickly immobiling the muscles of an animal being slaughtered so as to eliminate the potentially dangerous reflex activity in animal carcasses during their slaughter, and in turn reduce the risk of slaughtermen being seriously injured during the slaughtering procedure.
Claims (3)
1. An improved method of slaughtering animals which includes the steps of inserting an elongate nozzle into the cranial cavity of an animal and orientating same so that the nozzle is directed towards and communicates with the spinal cavity of the animal, connecting the nozzle to a source of vacuum, and sucking brain and spinal matter from the cranial and spinal cavities of the animal out through the nozzle to thereby destroy the animals brain structure and nerve endings attached to its spinal cord.
2. An improved method according to claim 1 wherein a suction pressure of at least 100 psi is used.
3. An improved method according to claim 1 or claim 2 wherein the nozzle forms part of an injector device which is connected by means of an air suction hose to a remotely located motorised suction device. Dated this 30 th day of April, 2002 RICHARD SYDNEY WIGG AND KELIE ANN WIGG By their Patent Attorneys MADDERNS
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU37052/02A AU3705202A (en) | 2001-05-04 | 2002-04-30 | Method of immobilising animals during slaughter |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPR4764A AUPR476401A0 (en) | 2001-05-04 | 2001-05-04 | Method of immobilising animals during slaughter |
| AUPR4764 | 2001-05-04 | ||
| AU37052/02A AU3705202A (en) | 2001-05-04 | 2002-04-30 | Method of immobilising animals during slaughter |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU15335/00A Addition AU751926B2 (en) | 1998-11-09 | 1999-11-09 | Method of stimulating animals during slaughter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU3705202A true AU3705202A (en) | 2002-11-07 |
Family
ID=25623858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU37052/02A Abandoned AU3705202A (en) | 2001-05-04 | 2002-04-30 | Method of immobilising animals during slaughter |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU3705202A (en) |
-
2002
- 2002-04-30 AU AU37052/02A patent/AU3705202A/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK1 | Application lapsed section 142(2)(a) - no request for examination in relevant period |