Aquaculture for all

Xelect helps Cromaris achieve 21 percent growth improvements

Sea bass Sea bream Breeding & genetics +3 more

A selective breeding programme established by Xelect has helped Mediterranean bass and bream producer Cromaris to improve growth rates of their fish by 21 percent per generation.

Aerial view of fish farms surrounding a small island
Cromaris is the largest aquaculture company in Croatia

© Cromaris

The goal of the programme is to use the latest genetic strategies to deliver major improvements in key traits every generation. This year, the partnership has yielded record gains for both bass and bream at Cromaris’ fully integrated operation Near Zadar, Croatia.

Dr Marie Smedley, head of breeding programmes at Xelect, commented: “We are delighted with the progress we’re seeing in Cromaris’ broodstock programme. For example, in seabass we have seen an improvement in growth of around 21 percent from one generation to the next. In seabream we have identified that nearly 70 percent of the variation in harvest size between individual fish is due to genetics, which makes the Cromaris population ideal for a high-return selective breeding programme. Running a successful advanced genetics programme is very much a team effort, and the high standards of husbandry and professionalism at Cromaris are key to delivering these kinds of gains”.

Lana Barić, hatchery manager at Cromaris, commented: “Managing this kind of comprehensive selection programme, while preserving stable hatchery production, can be challenging at times. After 3 generations of selected fish, we are already starting to see why this huge effort is worthwhile. With this powerful instrument, Cromaris continues investing in premium products differentiation, while maintaining sustainable and socially responsible production operations.”

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