Innovating for sustainable outcomes

Petuna is at the forefront of innovation in our journey of continuous improvement.

While we strive to be a best-practice example, we know the greatest outcomes are achieved through shared experience and collaboration. We work with our fellow aquaculture producers, communities, and regulators to develop technology and practices, improving the sustainability of the whole Tasmanian industry.

Breeding program

We have spearheaded a ground-breaking research program designed to breed physiologically advanced Atlantic salmon and rainbow trout with the ability to withstand the impact of climate change on sea temperatures and oxygen levels. Watch our video below to learn more.

Plastics and packaging

Petuna is rolling out sustainable new packaging that will divert more than 150,000 poly boxes from landfill every year and reduce our CO2 emissions from truck movements by 90%.

The fish in this video were humanely killed before the egg extraction process.

Feed composition

Petuna is improving Feed Conversion Ratios (FCR) and reducing fish waste, by using higher quality feed ingredients that are more digestible.

In Australia, feed companies are legally required to disclose ingredient details which is why Tasmanian farmed salmon is a safe, nutritious, healthy, and sustainable food. The feed for salmon contains poultry as a cooked, human grade by-product of chicken that is powdered and added to the feed. This is a good circular economy story, using chicken products that might otherwise go to waste.

Biomar Feed Skretting Feed

Algal Oil

We are currently trialling diets containing algal oil as a partial replacement for wild-caught fish oil. Algal oil is similar to fish oil in that it contains omega-3 fatty acids essential to fish health. However, algal oil is made from farmed marine algae, meaning it has no impact on any wild populations of fish or algae.

Petuna Dev0619 514

Fish in – fish out ratio (FIFO)

The Fish-In-Fish-Out (FIFO) ratio shows the amount of wild fish we use to produce 1kg of salmon or trout.

  • A FIFO ratio that is less than 1.0 must be achieved to become a net producer of seafood, which is an important achievement because it helps expand the ocean’s limited seafood resources and feed the world’s growing demand for seafood.
  • For example, a FIFO of 0.7 means only 0.7kg of wild fish is required to produce 1kg of salmon or trout.

The charts below show measures of:

  1. Forage Fish Inclusion Factor (FFIF) – this is a measure of the amount of wild fish ingredients included in the salmon or trout feeds.
  2. Feed Conversion Ratio (FCR) – this is a measure of how efficiently the farmed fish convert the feed into body weight.
  3. Fish In Fish Out (FIFO) ratio – this is calculated as FFIF x FCR – how much wild fish is in the feed multiplied by how efficiently the farmed fish convert that feed.
  4. Economic Feed Conversion Ratio (EFCR) – this is total weight of feed divided by net production.

Fish In Fish Out (FIFO)