NEWS FEED & ADDITIVE MAGAZINE July 2025 115 Scientists in Norway began examining how farmed salmon and rainbow trout perceive the light in their environment. Their aim, as explained by Nofima, is to provide recommendations to fish farmers on the use of lighting from hatching to harvest for both species. Light control is widely used in aquaculture to promote healthy growth, synchronise smoltification, and prevent early sexual maturation. This is achieved by adjusting the intensity, quality, and timing of the light surrounding the fish. By now considering the light environment from the fish’s perspective, the scientists intend to recommend light regimes that are optimally adapted to the biology of the fish at all times. This work is expected to contribute to improved welfare in Norwegian salmon farming. Project leader Anja Striberny from Nofima and her colleagues are currently mapping out how light is used in the industry in Norway. “There are more than a thousand scientific articles on the effects of light on salmon and trout. Fish farmers have requested a knowledge-based overview, so we have launched a survey about their light control. We hope industry players will respond, so we can connect research-based knowledge with practical experience,” says Striberny. The project group will also review the scientific literature and conduct new experiments with fish and light. Read more>> Researchers investigate light perception in farmed salmon and trout Teys Investments Pty Ltd and Cargill announced that a wholly owned subsidiary of Cargill has agreed to purchase all of the issued share capital of Teys Investments from the Teys family shareholders. As a result, Cargill will increase its ownership stake to 100% of Teys Australia and Teys USA (Teys), two of the primary operating companies which are currently jointly owned by Teys and Cargill. With a diversified family shareholder base, the Teys family has reportedly decided it is the appropriate time to transfer the family’s interest to Cargill, a partner shareholder for the past 14 years and global leader in the food and protein industries. The transfer of ownership is expected to provide continuity for Teys’ people, partners and producers, and ensure that it continues to serve as a leading provider of healthy, high-quality products for the Australian beef market and a buyer of Australian livestock destined for local and international customers. “My grandfather started this business more than 75 years ago with his brothers, and the family values of integrity, quality and honesty have stayed constant as we’ve evolved into the global food brand we are today,” said Teys Executive Chairman Brad Teys. Read more>> Cargill expands Australian beef market presence with Teys acquisition Photo: Freepik Photo: Anja Striberny/Nofima.
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