Farm biosecurity after a fire, flood or dry season

Page last updated: Friday, 25 May 2018 - 3:58pm

Managing farm biosecurity following a fire, flood or dry season is a balance of caring for livestock and paddocks while limiting the introduction of new pests, diseases or weeds onto the property.

Minimising biosecurity risks for livestock producers

Fires, floods and dry seasons create a feed shortage for affected livestock. To resolve this, you may buy in or accept donated feed, or you may agist your animals on another property. Both of these actions pose a biosecurity risk of introducing pests, diseases and weeds to your animals and your property.

The recommended steps for livestock producers are below.

Assess the risk of bought or donated feed

  • Ask the vendor/donor for a commodity vendor declaration: this will outline any chemical treatments and weed/toxicity risks in the feed and withholding periods for chemical treatments.
  • Ask if the feed has been tested for annual ryegrass toxicity (ARGT) to reduce the risk of ARGT poisoning.
  • Check that feed for cattle, sheep, goats and other ruminants is free of any animal matter (known as ‘restricted animal material’).
  • If you are selling or donating feed to other stock owners, provide them with a commodity vendor declaration from Meat and Livestock Australia.
  • Inspect the stock feed for visible signs of pests and weeds. To minimise the chances of a pest or weed establishing if it is present, feed out in paddocks in the same place each time and inspect the area for new weeds or pests on a regular basis. This will confine any problems to a defined area, making it easier to eradicate.

Assess the biosecurity status of agistment properties

Ask the agisting property owner to provide written assurances that:

  • agistment paddock fences are secure against strays
  • potential lead sources, such as farm dumps, are securely fenced and that old batteries or other chemical residue risks are not present in agistment paddocks
  • Johne’s disease is not present on the property
  • toxic plants are not present in agistment paddocks
  • herbicide-resistant weeds are not present on the property
  • water quality and quantity are suitable for the type of livestock.

Ask the owner for a written record of any recent paddock chemical treatments so that you can comply with withholding periods and vendor declaration requirements.

Additional animal welfare measures may be required if stock to be agisted have suffered injury from the fire. They will need to be regularly checked by the owner or the agistee. Put in writing who is responsible for this and who is responsible for calling a veterinarian and any associated fees.

See assessing sheep after a fireassessing cattle after a fire, and agisting livestock after a fire for more information.

Maintain stock traceability by recording livestock movements

When moving livestock to or from agistment, use a valid waybill and record the movement on the National Livestock Identification System (NLIS) database. Owners without a waybill book can apply for an emergency permit to move livestock when there is an urgent need.

Western Australia exports about 80% of its livestock and livestock products and our trading partners require traceability of livestock movement.

Department of Primary Industries and Regional Development (DPIRD) staff can assist with property identification codes (PICs) or NLIS questions.

Manage biosecurity of livestock returning from agistment

When stock return to your property from agistment, hold them in a separate isolation paddock for at least a week to assess their health status before returning them to the general livestock paddocks. Ideally the isolation paddock should be located close to the homestead so stock can be regularly inspected and any emerging weeds brought home with returning stock can be identified and controlled.

For more information on livestock biosecurity:

Minimising biosecurity risks for crop growers

Growers who bring grain or feed onto their property will need to put in place a plan to minimise any chance of introducing pests, diseases and weeds into their crops.

To minimise the risk, take the following steps:

Assess the risk of bought-in feed and seed

When buying in feed, ensure you know the biosecurity status of the property it comes from and inspect the feed for pests and weeds before feeding out.  

To minimise the chances of a pest or weed establishing if it is present, feed out in paddocks in the same place each time and regularly inspect the area for new weeds or pests. This will confine any problems to a defined area, making it easier to eradicate.

Any purchased seed should be certified free from pests and weed seeds.

Minimise biosecurity risks from borrowed machinery

If borrowing machinery:

  • inspect the machinery before bringing it onto the farm
  • clean out and wash down the machinery before coming onto the farm or clean out at a site away from future grain production areas.

Minimise biosecurity risks from contractors/volunteers

If there are people coming in to assist with replacing fences, buildings and sheds:

  • ask them to clean vehicles and machinery before coming to help
  • have contractors and volunteers park in a designated parking area and use existing farm transport if available
  • give this message to the organisers of volunteers.

Utility providers, such as power and water providers, should also check and clean vehicles and machinery before going onto farms to repair infrastructure.

Keep a register of all vehicles and people entering the farm.

For more biosecurity information: