Untersuchungen über die Fettverwertung der Regenbogenforelle (Salmo gairdnerii,R.) III: Einsatz von Leinöl,Maiskeimöl,Olivenöl,Schweineschmalz und Rindertalg im Vergleich zu Sonnenblumenöl in einer gereinigten Futtermischung

Investigations of Fat Utilization of the Rainbow Trout (Salmo gairdnerii, R.) III: Use of Linseed Oil, Maize Germ Oil, Olive Oil, Lard and Tallow in Comparison to Sunflower Oil in a Purified Food Mixture The use of various feeding fats of animal and vegetable origin is reported with respect to the suitability in the nutrition of rainbow trouts. All investigated fat components led to food utilization numbers of <1.0 and PER-values of >2.0. There were no pathological-anatomical modifications of the internal and external organs within the testperiod of ten weeks. Linseed oil led to a better utilization than sunflower oil and lard. The utilization of maize germ oil, olive oil and tallow was only insignificantly lower. All up to now investigated fats seem to be suitable as single components in the only food for rainbow trouts.