Introduction
Liam Johnston is a grazier from North West NSW, working with his family on a 7,000 acre property, running mainly cattle with a small mob of sheep and a very large feral pig problem.
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Neighbours join forces to reduce feral pigs and disease risk
Barraba farmer Liam Johnston says the risk of feral pigs spreading disease to his cattle is his biggest concern, but joining his neighbours in a control group for...Read more
Challenge
To reduce the risk of disease being transmitted to livestock from feral pigs.
Mobs of feral pigs were seen mixing with cattle in the paddocks, congregating at their feeders and using their waterpoints, which:
- reduced the stock’s available feed
- polluted water sources
- damaged farming infrastructure
- destroyed pasture and vegetation.
One of the biggest concerns for livestock producers is the disease risk of feral pigs. Feral pigs can transmit leptospirosis, brucellosis and Japanese encephalitis.
“Twelve months ago pigs in this area were in plague proportion. You'd go out a single day mustering see 5-6 mobs of pigs...disease could spread that quickly...the threat is huge.”
- Liam Johnston
Solution
Local Land Services (LLS) worked with Liam and his neighbouring landholders to provide the following support:
- set up a community control group bringing together over 20 neighbours in the area for more effective feral pig management across boundaries
- hosted practical workshops with the Centre for Invasive Species Solutions to increase landholders’ knowledge and skills including feral pig ecology as well as trapping and baiting techniques
- coordinated a targeted aerial shoot of feral pigs in May 2024 over 50,000 hectares
- coordinated trapping and baiting control programs across properties
- supplied free feral pig bait and grain for free feeding in traps
- loaned trapping and monitoring equipment
- assisted the ongoing use of the FeralScan app to help coordinate control including the setup of a private group to share data such as sightings, damage and control efforts with group members.

Outcomes
“After 12 months of this LLS controlled baiting program we’re down to barely seeing pigs at all...If we didn’t have our neighbours in a group with us with the LLS helping, those pig numbers would still be what they were 12 months ago.”
- Liam Johnston.
Over a period of 12 to 18 months:
- over 20 landholders actively participated in group control programs
- a mix of ground and aerial control was carried out across the properties
- land managers saw a significant drop in feral pig numbers and damaging impacts
- the disease risk to livestock was also reduced significantly
- 5,948 feral pigs were culled in an aerial control shoot in May 2024, helping protect over 50,000 hectares across 43 private holdings
- 855 feral pigs were controlled through ground control programs recorded by landholders from October 2022 to May 2024 (via FeralScan)
- the group made use of the FeralScan app to target efforts and get much better results
- land managers saw more efficient and cost-effective feral pig control by coordinating efforts between neighbours and utilising free tools and equipment
- LLS noted an increase in landholder confidence to undertake feral pig control and collaborate with neighbours to see the benefit for their property and wider community.
Ongoing work
Local Land Services continues to work with this group of land managers to keep on top of feral pig numbers and remain committed to assisting land managers to understand and comply with their general biosecurity duty.
This group of neighbours continues to coordinate their control twice a year and follow up with ad hoc control throughout the year. These actions are reported via the FeralScan group, helping to motivate other group members.
Contact Local Land Services NSW
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