Norway: Is there a link between declining marine osmolytes in feed and rising winter wounds and ulcers in salmon?

Dr Antony Prabhu Philip, a senior scientist at NOFIMA, believes so. Speaking at the IFFO’s annual conference in Lisbon this month, Dr Prabhu urged a renewed focus on marine-based osmolytes in salmon feed to address health challenges linked to cold temperatures, such as dehydration and increased susceptibility to disease. “It’s crucial to adjust feed formulations to meet the fish’s health needs,” he stressed, emphasizing that certain health benefits can only be provided by marine ingredients. Aquaculture producers are facing tougher conditions, he said. Norwegian authorities reported that over 62.8 million salmon, or 16.7% of the population, died ​​in 2023, primarily due to disease and osmoregulatory dysfunction. This is where osmolytes can play a role. These naturally occurring compounds are critical for the health of carnivorous species like salmon. "Osmolytes are essential for hydration and cell integrity, and marine ingredients are their primary source." Salmon, originally ...