In the USA, fish feed with soybean meal was developed in order to improve the genetic selection of salmon

Innovation & Technology
Published Apr 17, 2024

Tridge summary

The aquaculture industry is evolving towards sustainability by adopting plant-based feeds, notably soybean meal, to meet the growing seafood demand. This shift is highlighted by the development of a genetically selected 'vegetarian' rainbow trout strain by researchers from the University of Idaho and the USDA-ARS, known as the Hagerman strain. This strain thrives on a plant-based diet, showing resistance to soy-induced enteritis and exhibiting superior growth and feed conversion rates compared to commercial strains. The move towards using cost-effective, plant-based feeds, combined with genetic selection for traits that enhance adaptability to these diets, particularly in species like rainbow trout, represents a promising strategy for increasing the sustainability and productivity of the aquaculture industry.
Disclaimer: The above summary was generated by a state-of-the-art LLM model and is intended for informational purposes only. It is recommended that readers refer to the original article for more context.

Original content

Over the past 10 years, the aquaculture industry has been focused on using entirely plant-based feeds. Feeds with plant ingredients serve as a source of protein, can act as additives in dietary formulations and make production cost-effective. One of the most popular plant proteins used in aquaculture feeds is soybean meal. In the soybean meal production process, the soybeans are roasted before the grinding stage. The main purpose of this is to eliminate anti-nutritional factors that may have an adverse effect on fish welfare. However, some fish (especially predators such as salmon) do not do well on diets high in soybean meal. This happens because, despite the roasting stage, some anti-nutritional factors - such as trypsin inhibitors, phytates, glycinin and oligosaccharides - remain in the beans. Such feeds cause enteritis and inflammation of the small intestine in fish, which impairs their health and inhibits growth. However, after repeated and prolonged exposure to soybean meal ...
Source: Oilworld
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