Transmissible spongiform encephalopathies (TSEs) are fatal diseases that occur in adult animals and in humans. TSEs occur when abnormal proteins (prions) accumulate in tissue, particularly brain tissue.
The most important TSEs of animals are:
TSEs are present in Europe, the USA, Canada and a few other countries. The risk of TSEs occurring in Australia is negligible.
Australia has established the Transmissible Spongiform Encephalopathies Freedom Assurance Program (TSEFAP) to provide a national approach to TSE. Key elements of TSEFAP are:
These programs demonstrate Australia's continuing negligible risk for BSE and scrapie and help to maintain our access to export markets for livestock products.
Livestock owners and veterinarians have a vital role to play in detecting possible cases of TSEs and preventing the introduction or spread of TSEs.
This guide describes:
Transmissible spongiform encephalopathies (TSEs) are diseases that occur when abnormal proteins (prions) accumulate in the tissue of affected animals, particularly brain tissue. The protein causes a spongy degeneration of the brain and spinal cord, producing symptoms such as staggering and tremors, before eventually killing the animal.
TSEs have a very long incubation period. After infection, it takes years for symptoms to develop, but once they do, animals usually deteriorate and die within weeks to months.
The most significant TSEs in animals are:
Other TSEs occur in wild and captive animals such as mink, deer and cats.
There is no treatment or vaccine for TSEs.
BSE is a fatal chronic disease of adult cattle. It is known as 'mad cow disease' because of the erratic behaviour of affected cattle.
The main signs of BSE are:
BSE was first described in the United Kingdom in 1987. It spread when cattle were fed manufactured animal feed that included meat meal and bonemeal containing the BSE protein. Bans on feeding meat meal and bonemeal to ruminants have now controlled the disease.
Scrapie is a fatal chronic disease of adult sheep and goats. It is called 'scrapie' because infected animals will often scrape against hard surfaces to relieve itching caused by the disease.
The main signs of scrapie are:
Scrapie can be transmitted from mothers to young animals after they are born, and from infected adult animals to other adults by direct contact and environmental contamination.
BSE first emerged in the United Kingdom and other parts of Europe in 1987. Small numbers of cases have also been identified in the USA, Canada and some other countries. It is not known to occur in Australia.
Classical scrapie has occurred in Europe for more than 200 years. It is also seen in the USA, Canada, and a few other countries. It is not known to occur in Australia.
Several TSEs occur rarely in humans in countries other than Australia. Variant Creutzfeldt-Jakob disease (vCJD) in humans is thought to be caused by the same agent as BSE in cattle.
There is no evidence that scrapie can be transmitted to humans.
Transmissible spongiform encephalopathies (TSEs) are not known to occur in Australia. The National Transmissible Spongiform Encephalopathies Surveillance Program (NTSESP) is designed to:
The NTSESP is jointly funded by industry and the Australian and state and territory governments. It is managed by Animal Health Australia. In Queensland, the program is coordinated by Biosecurity Queensland.
In Queensland, a biosecurity inspector or veterinarian can submit samples from any animal with clinical signs consistent with a TSE to the Biosecurity Sciences Laboratory for TSE exclusion testing at no cost.
In addition, the NTSESP provides incentive payments to encourage owners and veterinarians to submit samples from eligible cattle and sheep for testing.
To participate in the program, owners identify live cattle and sheep that they believe show clinical signs consistent with TSEs. They then contact a biosecurity inspector or veterinarian who examines the animal to confirm if the signs are consistent with TSEs and if the animal meets the other eligibility criteria for an incentive payment. If so, the animal is then euthanised and samples collected and submitted to Biosecurity Queensland for testing.
Encouraging owners, inspectors and veterinarians to submit samples from eligible cattle and sheep enables Australia to provide strong epidemiological evidence that BSE and scrapie are not present while sampling a relatively small number of animals.
To be eligible for testing and an incentive payment under the TSEs program, a case must meet 9 criteria:
If you would like an examination conducted by a Biosecurity Queensland inspector or veterinarian, call 13 25 23 to find your closest officer.
You may also receive the incentive payments by asking your private veterinarian to submit samples from eligible cattle and sheep.
Owners of eligible cattle or sheep tested as part of the program can claim:
Private veterinarians who examine cases of nervous disease in cattle and sheep, and submit suitable samples and required documentation for eligible cases to Biosecurity Queensland, can claim the following incentive payments:
If you have an ABN and are registered for GST, the GST amount will be added to your invoice.
Samples collected as part of the TSEs surveillance program are tested for TSEs in the laboratory.
Histological examination of brain tissue by trained veterinary pathologists is the primary test for detecting TSEs in Australia. Pathologists look for spongiform changes (sponge-like holes) in brain tissue samples. The absence of these changes indicates that TSEs are not present. Further tests can be done if the histological examination is not conclusive.
In addition, other tests are done to investigate alternative diagnoses.
Following bovine spongiform encephalopathy (BSE) outbreaks overseas, Australia banned the importation of live cattle from Europe, Japan, Canada and the USA between 1998 and 2004.
However, before the bans were in place, some cattle were imported to Australia from countries that had BSE. Given BSE's long incubation period, it is important to monitor these animals to ensure that they do not develop BSE.
These cattle have been traced, identified and placed under permanent quarantine to ensure they do not enter the food chain for either humans or animals.
Australia's Imported Animal Quarantine and Surveillance Scheme ensures that the status of each quarantined animal is confirmed and reported each year.
It has been illegal to import live sheep and goats into Australia from all countries except New Zealand since 1952.
Feeding cattle animal meals contaminated with bovine spongiform encephalopathy (BSE) has been the main cause of BSE outbreaks overseas.
Since 1997, Australia has had a ruminant feed ban to:
Ruminants include:
The ruminant feed ban:
TSEs are not known to occur in Australia. However, if a TSE were to enter the country, the ruminant feed ban would be an important measure in preventing its spread.
RAM must not be feed to ruminants and is material that:
Banned RAM feeds include rendered products such as:
However, there are some permitted exceptions. Animal materials that are not RAM and can legally be fed to ruminants are as follows:
Animal feed that is sold or supplied must have a positive or negative RAM statement that indicates whether the feed does or does not contain RAM.
It is illegal to:
Penalties apply to anyone who breaks these laws.
Animal feed containing RAM produced by rendering in accordance with the Australian standard for the hygienic rendering of animal products can be fed to pigs and poultry because these animals are not ruminants.
Compliance with the requirements of the ruminant feed ban is monitored under the Queensland Ruminant Feed Ban Surveillance Program.
Biosecurity Queensland inspectors regularly inspect the premises of renderers, stock feed manufacturers, retailers and owners to monitor compliance with the ruminant feed ban.
It is illegal to sell or supply RAM, or animal feed containing RAM, to a person knowing it is intended to be fed to a ruminant.
A RAM statement indicates whether animal feed contains RAM. A positive RAM statement indicates that feed contains RAM; a negative RAM statement indicates that it does not.
Feed requires a positive or negative RAM statement if it is sold or supplied with the intention of being fed to a vertebrate animal, a bee, crustacean or mollusc.
The requirements apply to:
Feed does not require a RAM statement if it is sold or supplied for:
RAM statements are not required for feed that is produced and consumed on farm.
In addition, a negative RAM statement is not required for manufactured feed that consists entirely of:
When selling or supplying animal feed containing RAM, you must apply a positive RAM statement to the feed container or, if selling in bulk, accompany the feed with a positive RAM statement on a written notice such as an invoice or delivery docket.
When selling or supplying animal feed that does not contain RAM, you must apply a negative RAM statement to the feed container or, if selling in bulk, accompany the feed with a negative RAM statement on a written notice such as an invoice or delivery docket.
The table below explains the legal requirements for the appearance of positive and negative RAM statements.
| Packaged animal feed, including 're-bagged' feed | Animal feed supplied in loose bulk, including consignments to stock feed manufacturers | |
|---|---|---|
| Contrast | The characters of the RAM statement must be in dark print on a light background, or light print on a dark background, so that a distinct contrast between the text and background makes the text easy to read. | |
| Location | The RAM statement must be in a prominent position where it can easily be seen on the feed container, either written or stamped directly on the container or attached securely to the outside of the container. | The RAM statement must be in a prominent position where it can easily be seen either on the front of a product label attached to the invoice or delivery docket, or incorporated to form part of the printed text in a prominent position on the front of the invoice and/or delivery docket. |
| Minimum size | If written or stamped directly on to the feed container the letters of the RAM statement must be at least 10mm high. If the RAM statement is on a tag or label that is attached to the outside of a feed container:
|
|
It is an offence to knowingly take a RAM statement off, or cause a RAM statement to be taken off, a container of animal feed. It is also an offence for a person to knowingly mark or deface a RAM statement.
Feed for ruminants must not be contaminated with RAM or with feed that contains RAM during manufacture, storage or feeding.
To prevent cross-contamination, stock feed renderers and manufacturers should implement good manufacturing practice (GMP) under a quality assurance (QA) program throughout all stages of the manufacturing process, from raw material input to product delivery.
In particular, when a stock feed manufacturer uses the same mixing equipment to produce 'mixed lines' (animal feed containing and not containing RAM), measures must be in place to prevent RAM from contaminating feed intended to be fed to ruminants or not intended to be labelled with a RAM statement. The ruminant feed ban requires that no RAM be fed to ruminants, not even in trace amounts.
The best way to avoid cross-contamination is to have separate and permanently dedicated production lines (including separate augers, mixers, pelleting machines and bagging equipment) for animal feeds containing RAM and for those without.
Where this is not possible, manufacturers should adopt other measures to reduce cross-contamination risks (e.g. clean equipment thoroughly or use accepted flushing or sequencing techniques between production batches).
You can find more information on preventing cross-contamination in Appendix 2 of the Australian ruminant feed ban national uniform guidelines. The guidelines are available from the Animal Health Australia website.
Industry guidelines for preventing cross-contamination have also been developed. To get a copy, contact the Stock Feed Manufacturers' Council of Australia.
In addition to the requirements for RAM statements, the regulation prescribes other labelling requirements and standards for feed for food producing animals in the Code of practice for feed for food producing animals. In many cases, feed for animals must comply with both the standards and labelling requirements of the code of practice and the requirements for a RAM statement
Stock feed retailers can take a leading role in educating livestock owners about their products.
You can help by showing livestock owners the positive RAM statement on products containing RAM, and reinforcing the message that ruminants must not be fed RAM.
Compliance with the requirements of the ruminant feed ban is monitored under the Queensland Ruminant Feed Ban Surveillance Program.
Biosecurity Queensland inspectors regularly inspect the premises of renderers, stock feed manufacturers, retailers and owners to monitor compliance with the ruminant feed ban.
Livestock owners:
'This product contains restricted animal material - DO NOT FEED TO CATTLE, SHEEP, GOATS, DEER OR OTHER RUMINANTS'
Ruminants include:
Some livestock owners prepare their own animal feed. If you are preparing both feed that contains RAM and feed that does not, you should adopt good manufacturing practices to avoid contaminating non-RAM feed with RAM.
Measures to avoid cross-contamination include:
RAM statements are not required for feed that is produced and consumed on farm.
Compliance with the requirements of the ruminant feed ban is monitored under the Queensland Ruminant Feed Ban Surveillance Program.
Biosecurity Queensland inspectors regularly inspect the premises of renderers, stock feed manufacturers, retailers and owners to monitor compliance with the ruminant feed ban.
John Smith has a farm on which he rears both pigs and beef cattle.
John prepares his own feed for his pigs and cattle on his farm. He includes commercially produced meat meal, bonemeal and fish meal in food for his pigs and makes sure that animal products and fish meal are not included in food for his cattle.
However, John allows his cattle to freely roam the area where he mixes and stores both rations. John does not install a fence to keep animals out of this area, even though there is always spilt feed containing RAM on the ground following mixing.
John has failed to take reasonable measures to prevent his cattle accessing RAM. A reasonable measure would be to build a secure fence around the mixing and storage area with a secure gate, hinged in such a way that it closes after any person opens it and cannot be opened by cattle once it is shut.
Jane Jones rears beef cattle. She purchases blood and bone fertiliser (containing RAM) to fertilise her cattle pasture. When spreading the blood and bone over the pasture, she leaves cattle on the pasture because she believes they will not consume the material in any great quantity. Jane decides not to incorporate the fertiliser into the pasture because rain is forecast for that night. However, the rain does not eventuate.
Blood and bone fertiliser is RAM that must not be fed to cattle. Jane has failed to take reasonable measures to deny her cattle access to the RAM spread on the pasture. A reasonable measure would be for Jane to remove her cattle from the pasture before and during the spreading operation and to keep them away until the fertiliser is sufficiently incorporated into the pasture. She could aid incorporation by spreading the fertiliser evenly (rather than in heaps), watering it in (irrigation), ploughing it in, or allowing enough time so that the fertiliser is incorporated naturally.
Generally, excluding ruminants from treated pasture for 3 weeks may allow enough rain and pasture growth to minimise the risk of animals ingesting RAM. However, longer exclusion periods will be needed if rain is scarce or pasture growth is slow.
The Queensland Ruminant Feed Ban Surveillance Program (QRFBSP) is a surveillance program (biosecurity program) authorised under the Biosecurity Act 2014 (the Act) to monitor compliance with the ruminant feed ban.
The purpose of the QRFBSP is to monitor compliance with the provisions of the Act relating to:
The QRFBSP applies to places, other than residences, in Queensland where:
The QRFBSP started on 1 October 2016 and is ongoing.
Since 1997, Australia has had a ruminant feed ban to:
Infectious proteins called prions cause TSEs, including bovine spongiform encephalopathy (BSE, also known as 'mad cow disease') in cattle, and scrapie in sheep.
Restricted animal material (RAM) may contain prions and feeding RAM to ruminants can spread TSEs.
Australia is free of BSE and scrapie. The World Organisation for Animal Health (OIE) has designated Australia as having a negligible BSE risk status (the lowest risk).
Australia's negligible BSE risk status provides considerable trade advantages. These advantages are subject to the OIE and our trading partners remaining confident that we have measures in place to minimise the risk of the introduction, establishment and spread of TSEs, particularly BSE.
The Biosecurity Act 2014 and Biosecurity Regulation 2016 apply the ruminant feed ban in Queensland by:
The QRFBSP gives Biosecurity Queensland officers the authority to monitor compliance in Queensland. The program includes regular inspections of renderers, stock feed manufacturers, retailers, and owners. By ensuring that the ruminant feed ban is in place, the QRFBSP helps to protect public health, animal health and the interests of trade.
The key activities undertaken during the QRFBSP include:
The QRFBSP provides powers for authorised officers to enter premises at reasonable times for the purpose of the QRFBSP. An authorised officer must make a reasonable attempt to obtain the occupier's consent before entering. Nevertheless, an authorised officer may enter the place if:
An authorised officer may take any action authorised by the QRFBSP; however, nothing in the QFBSP limits the powers of authorised officers under Chapter 10 of the Act.
More information about what an authorised officer may do to monitor compliance is available in the QRFBSP.
You may need to give the authorised officer reasonable help to monitor your compliance with the prohibitions on feeding or supplying RAM, and the requirements relating to RAM statements for feed. This includes providing:
Download the Queensland Ruminant Feed Ban Surveillance Program or request a free copy by contacting our Customer Service Centre on 13 25 23.
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