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Learn about the vital role of broodstock nutrition in ensuring successful reproduction, egg quality, and fry development in various fish species. Discover the impact of different feeding strategies on broodfish and explore the benefits of using Vitalis feeds for optimal results.
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Introduction to Nutreco Arjen Roem – Technology Manager John Van Dooren – Sales Manager NL
Nutreco Agriculture Aquaculture Salmon Feed Feed Premix and specialty feed Trout & Marine Species Feed • Premix producer • Compound feed in Spain • Broilers Spain • Compound feed in NW Europe • No.1 feed producer of feed for farmed fish • 40% of the global market for salmon feed • Global brand - Skretting • Innovative feeds for more than 50 fish species
Nutreco - International Spread Norway Canada Great-Britain Netherlands Belgium Germany France Central Europe United States Portugal Japan Italy Chile Spain Australia Aquaculture Agriculture
Nutreco Aquaculture Research Centre Managing Director • Skretting • Personnel, HSEQ, IT • Nutreco Support • Accounting, Salary Admin (4) + Statisticial/ models (1) Nutrition (10) Feed Production (8) Trial Unit (4) QA Food Safety (1) Lerang Research Station (10) Nutreco Technology Centre (4) Laboratory (18)
Broodstock R&D • Protein quality • Lipid requirements • Pigments • Vitamins • Phospholipids • Essential fatty acids
Broodstock Nutrition Affects the • Reproductive physiology of the broodstock and in turn their ability to spawn and produce good quality gametes • Quantity of the eggs (fecundity) • Quality of the eggs and in turn, • Quality of the yolk-sac fry or larvae (disease and malformation-free) and in turn, • Initial performance of the first-feeding larvae or fry before they become estabished on feed
Broodstock nutrition ; The broodfish The eggs The yolk-sac fry or larvae
Multiple spawners Spawn annually and multiple batches,sea bass, sea bream (4-6), halibut (10), cod (15-20) Short vitellogenesis The gonads can be affected by feeding in a few weeks/months Single batch spawners Spawn annually, single batch of eggs over several years ( trout and salmon) or some spawn once and die after spawning (Pacific salmon species) Long vitellogenesis To significantly affect the gonads one must feed broodstock feed for a long period. Species-dependent spawning strategy:
The Vitalis Feed Range All the essential requirements for a broodstock feed have been incorporated into our range of Vitalis feeds. The range is as follows: • Vitalis SA salmon • Vitalis RT trout • Vitalis Repro marine species • Vitalis Mix • Vitalis Lucioperca?