Know your interval: Why getting ESI wrong could cost you more than a sale

LPA audits have uncovered a disturbing pattern of on-farm animal treatment records being incorrectly completed, resulting in National Vendor Declarations (NVDs) which don’t match on-farm records and Export Slaughter Interval (ESI) being missed or misunderstood. 

This has caused confusion and triggered investigations, with affected sheepmeat needing to be put on hold after processing.  

Fortunately, the National Livestock Identification System (NLIS) has enabled the rapid tracing of nonconforming animals and enabled processors to take necessary steps to maintain the integrity of our export supply chain. 

Here’s what every producer needs to understand to effectively manage treatment intervals.

The problem: Treating animals and losing track of time
It starts simply enough. An old ewe or a heifer is treated with a registered drench, a pour-on, or an antibiotic. She recovers. She looks well. The producer checks she’s fit and sound, loads her onto the truck, and sends her to the saleyards. 

However, no one checked the treatment register to confirm the ESI had passed and the animal was safe for slaughter. That treated animal – which looks perfectly healthy – is now part of a consignment headed for an export-licensed abattoir. 

Recent LPA audits have identified critical nonconformities (particularly in ewe flocks) where treatment records are incomplete or not maintained at all, and the consequences extend well beyond a single farm.   

Elizabeth Bradley, ISC Quality, Policy and Compliance Manager, said the audit findings are a clear signal that some producers don’t fully appreciate food comes from the animals they produce and there is a clear distinction between the meat Withholding Period (WHP) and the Export Slaughter Interval (ESI).  

“Both are important, but overlooking an ESI (which can be much longer than a WHP) can have consequences that go far beyond the individual producer.” 

Australia’s red meat industry depends on every producer in the chain playing their part to maintain global market access. The good news is these issues are entirely preventable.  

“It’s simply a matter of reading the label to understanding the time intervals which apply, and maintaining clear records you can refer back to before drafting any animals for sale,” Elizabeth said. 

“We want to work with producers to get this right, not catch them out.”  

ESI and WHP: Two intervals, two different purposes 
One of the most persistent sources of confusion among producers is the difference between the WHP and the ESI.  

While both WHP and ESI appear on chemical product labels and both are defined in days, they can differ in length. 

Put simply, the WHP is what is required to meet Australian food safety standards while the ESI ensures we meet our export market requirements. 

Australia’s beef and sheepmeat exports are worth billions of dollars annually and importing nations set maximum residue limits (MRLs) that can be stricter than Australian standards.  

When a producer consigns livestock to a saleyard without confirming the ESI has expired, they risk an abattoir purchasing residue-affected animals which can then enter the export supply chain.   

A single residue detection in an export market can trigger audits, suspensions and long-term reputational damage to Australian red meat – threatening the market access which underpins our industry. 

What LPA requires: Your record-keeping obligations
Livestock Production Assurance (LPA) is Australia’s on-farm quality assurance program, and it sets clear, non-negotiable requirements around the recording and management of animal treatments.  

Under LPA, producers must: 

• record all treatments at the time of treatment – not from memory days or weeks later
• record the product name, batch number, date of treatment, animals treated, dose rate, route of administration and product expiry date
• record both the WHP and the ESI for every treatment
• record the date on which the WHP and ESI will expire for the specific animals treated
• ensure records are legible, retained for at least two years, and available for inspection at audit
• cross-reference treatment records before completing any National Vendor Declaration (NVD)
• never send animals to slaughter (directly or via saleyards) before both their WHP and ESI have expired or without declaring it on the NVD/eNVD
• declare active WHP and ESI periods on the NVD/eNVD when selling or consigning livestock. 

Please note: NVDs are a legal document. Submitting an NVD that is incorrect because treatment records were not kept or consulted can expose the producer to serious legal and commercial liability, even if the mistake was unintentional.

The cull ewe risk: Why this class of stock needs closer attention 
Cull ewes represent a particular risk point in the system. By definition, they are animals leaving the breeding flock which are often older, occasionally treated for conditions associated with age, and typically sold in mixed lots through saleyards rather than directly to processors. 

The saleyard pathway creates additional complexity. Buyers at saleyards include traders, and processors, including export-licensed processors. An animal dispatched to the saleyards with the intention of going to a domestic processor may end up in an export supply chain, depending on who buys on the day. The producer has no control over end destination once the animal leaves the property. 

This makes pre-sale ESI verification even more critical for cull ewes. The safe assumption is always that any animal could be purchased for export processing, and the ESI must have passed before that animal leaves the farm. 

Common scenarios leading to nonconformity in ewe flocks include: 

• treatments administered during pregnancy or lambing and not recorded
• drenching records kept informally (on a whiteboard, in memory) or missing information
• multiple people administering treatments on a property without a consistent recording system
• ewes drafted for sale shortly after a flock-wide treatment without confirming individual ESI status
• purchasing a new product without checking whether the ESI differs from the previous product used. 

What producers can do right now
To protect both your business and the broader industry, you should ensure you understand and are adhering with the LPA requirements around ESI and WHP. Here are four steps to follow: 

1. Review your treatment records – are they current and complete, and do they include WHP and ESI dates for every treatment recorded?
2. Check your chemical labels or the APVMA PubCRIS database to confirm the ESI for every product you currently use or hold in your shed.
3. Before any sale, cross-reference your treatment records against the animals you intend to draft – don’t rely on memory alone.
4. If you’re unsure whether the ESI has passed, don’t sell the animal – hold it until you’re certain.