MacDonald brings extensive experience across aquaculture, food production and supply chain management.
The upgrade will enable the site to shift from lower-protein sunflower meal to high- and super-high-protein variants, strengthening the regional supply of plant-based protein for feed manufacturers.
The Irish-funded research will examine how such additives perform across different production stages, providing long-term data on effectiveness and potential scalability.
The launch is supported by 9 peer-reviewed publications, 12 mode-of-action studies and 5 years of field data, reflecting a broader industry shift toward scientifically validated feed additives.
The Lithuania project builds on earlier clean energy investments by Mars, including solar developments in Poland and wind energy agreements in Sweden and the United States.
The exhibition is expected to attract over 600 exhibitors from 40 countries, including 12 country pavilions, and more than 20,000 visitors.
The company added that it may carry out additional share purchases outside the programme if deemed appropriate, including block trades, under its existing shareholder authority.
The vaccine is designed to protect against a broad range of bacterial and viral diseases, including infectious pancreatic necrosis virus (IPNV), furunculosis, cold-water vibriosis, vibriosis, winter ulcer disease and yersiniosis.
The company has historically focused on species such as salmon, trout, seabass and seabream.
Adisseo said maintaining consistent product quality and supply reliability remains a priority, even as market conditions force pricing adjustments.