Are feeds negatively impacting the surrounding farming environment?
Skretting Australia advocates for the protection of the environment as it has a direct impact on the sustainability of aquaculture.
Current feeds for salmon and other farmed fish are formulated to be highly digestible to enable feed nutrients to be efficiently converted into food for human consumption. The two feed nutrients of common concern are nitrogen and phosphorous, as excessive levels can lead to the eutrophication of nutrients in the environment.
Advances in feed formulation, hatchery technology, fish health and husbandry management practices have greatly reduced the potential pollution problems.
Our feeds are designed to be specific in their application, e.g:
- Hatchery feeds have physical properties that are designed to improve water quality;
- Transfer feeds help to reduce stress during the transfer of juvenile salmon from freshwater land-based hatcheries to the seawater grow-out sites;
- Seasonal diets help to support the fish during periods of high water temperatures and improve growth during optimal growing conditions; and
- A pro-active diet that helps support fish when coping with disease, environmental insults and subsequent recovery from these stressors.
By making high quality feeds, nutrient discharges can also be controlled by reducing dust and nutrient leaching from the feeds, which allows the fish to grow to its maximum, while using the lowest amount of feed as possible.
High quality on-farm feed management practices and systems can minimise the impact of feeds on the surrounding environment. This includes:
- Ensuring feed systems are operating efficiently without pellet breakage during delivery to pens;
- Ensuring feed systems are delivering pellets evenly to the fish population; and
- When feeding, fish are closely monitored by experienced feed staff using above and underwater cameras and other technology to avoid overfeeding the fish.