Trygve Berg Lea

Sustainability Manager, Skretting

Trygve Berg Lea is sustainability manager in the fishfeed company Skretting with headquarters in Stavanger, Norway. Skretting is part of Nutreco – a global leader in animal nutrition and fish feed. He has worked with different aspects of fish nutrition for the last 30 years. His primary interest has been working with implementing new research findings into new products and knowledge support for the aquaculture industry. He now leads the work in Skretting within the area of sustainability and is a member of the Nutreco sustainability platform. He is a member of the IFFO RS technical advisory board and GlobalGAP aquaculture technical committee. He has also participated in developing the Aquaculture Stewardship Council (ASC) salmon standard and is also member of the steering committee of the ingoing development of an ASC feed standard. Mr. Lea graduated from the Norwegian University of Life Sciences in 1981.

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Panel discussion: What is holding back the use of processed animal protein in farmed fish?

Researchers argue that supplementation of low protein diets with amino acids could enable more sustainable animal production systems. They say partial substitution of soybean meal by amino acids allows a reduction in EU reliance on soybean imports from South America, and elsewhere. The thinking is that economies of scale will kick in on the cost front.

Apart from contributing to protein rich feedstuffs substitution, amino acids are said to also positively influence animal metabolism and reduce the nitrogen upload into the environment.  However, the successful implementation of reduced crude protein diets in this way relies on a deep knowledge of amino acid requirements.