Pig program 2008-2009

Overview

The National Residue Survey (NRS) was originally established in 1961 following concerns about pesticide residues in exported meat. Today, NRS tests for residues of pesticides, veterinary medicines and environmental contaminants in 22 animal and 26 plant commodities, including five horticultural products.

Since 1993, NRS has operated on full cost recovery, and is funded principally by levies from participating industries. The Australian Government provides funding for NRS national and international residue commitments that provide benefits for the community, for industry and for government programs.

Sampling

The NRS pig residue testing program fulfils the requirements of both the Biosecurity Service Group (BSG)—formerly the Australian Quarantine and Inspection Service—and those of international trading partners for export certification, and therefore market access. The NRS program also supports state and territory licensing of domestic processing facilities and industry quality assurance initiatives. The sampling plans are reviewed annually by NRS in close consultation with industry and BSG before final approval.

Sample collection rates from pigs are based on production levels in Australia, or are directed by overseas market access requirements if the commodity is to be exported. NRS generates all requests for samples for residue monitoring.

Pig products are sampled by authorised government officers at export abattoirs and by quality control staff at domestic abattoirs. The samples are sent from collection points at the abattoirs to a central receival and dispatch facility within NRS, where they are sorted into batches and forwarded to appropriate contract laboratories for analysis.

Sample allocation for random monitoring of pigs is affected by the number of animals being slaughtered at each abattoir. The distribution of samples is designed so that the probability of an abattoir being selected for sampling is proportional to the commodity throughput of that abattoir. NRS sends sample requests to abattoirs each month, specifying the date, the class of animal, the tissue to be sampled (meat, fat, liver or kidney) and the production period during which samples are to be taken. Animals for sampling are then selected at random along the slaughter chain.

During 2008–2009, 3302 samples were collected from pigs and analysed for residues of pesticides, veterinary medicines and environmental contaminants.

Chemical screen and residue testing results 2008-2009

The purpose of the pig random monitoring program is to confirm the residue status of Australian pork, as specified by the maximum residue limits and maximum levels of the standards set out in the Australia New Zealand Food Standards Code (the Code).

Samples are tested against an agreed chemical screen that is developed in consultation with industry. If any sample shows a positive result for a chemical, further confirmatory testing is carried out. Any sample found to contravene the Code is traced back to its origin by relevant state and territory authorities and appropriate action taken.

The chemicals listed in the following table include those that may be used in animal production in Australia, as well as those that may be important in terms of international trade. Such chemicals include persistent chemicals such as organochlorines that are no longer
used in Australian agriculture.

Since 1994, 1 857 onion samples have been tested for residues and contaminants. The onion industry has achieved 100% compliance with Australian Standards over the past 15 years through strong quality assurance programs stipulating the appropriate use of agricultural chemicals according to good agricultural practice. The results assure customers in overseas markets of the residue integrity of Australian onions.

Residue testing results 2008-2009

The overall compliance rate with relevant Australian Standards was 99.91%.

Two fat samples contained anthelmintic residues above the Australian Standard. Traceback investigations revealed that in one instance a sow was inadvertently sold a week earlier than planned and was slaughtered within the withholding period. The other residue occurred because a sale animal was accidentally moved to a farrowing pen with access to medicated feed, and was then sold. Warning letters were issued to both producers. A kidney sample also contained antibiotic residues above the Australian Standard. Although the exact cause of the residue could not be confirmed, it is likely that it may have occurred through crosscontamination during the manufacture of a pre-mix ration.

Laboratory performance evaluation and proficiency testing

NRS contracts analytical laboratories to perform the relevant residue analyses. Laboratories are proficiency tested in order to ensure the validity of analytical results.

NRS continues to be an accredited provider of proficiency testing schemes. Accreditation ensures that the NRS proficiency testing system is recognised within the laboratory community as meeting internationally accepted standards and having the ability to establish the technical competence of participating laboratories.

International maximum residue limits

In consultation with Onions Australia, NRS has maintained its international maximum residue limit tables for countries that are major export markets for Australian onions. These tables can be found on the NRS website.

Contacts

General enquiries

Phone: +61 (02) 6272 4274
Fax: +61 (02) 6272 4023
Email: National Residue Survey

Postal address:
National Residue Survey
GPO Box 858
Canberra ACT 2601
Australia

Director, National Residue Survey

Manager, plant residue testing program