Journal Article

The impact of diet on the slaughter yield, proximate composition and fatty acids profile of fillets of tench (Tinca tinca (L.))

Zmijewski, T, Szczepkowski, M, Wunderlich, K.,Inland Fisheries Institute, Olsztyn (Poland). Dept. of Lake Fisheries, Jankowska, B,University of Warmia and Mazury, Olsztyn (Poland). Dept. of Meat Technology and Chemistry, Zakes, Z.,Inland Fisheries Institute, Olsztyn (Poland). Dept. of Aquaculture

2006

Overview

The impact of diet (natural or formulated feed) on the biometric parameters, slaughter yield, proximate composition, and fatty acids profile of tench, Tinca tinca (L.) was tested. The study material was comprised of fish from earthen ponds that had fed on natural food (age 5+, mean body weight 420 g) and specimens obtained from intensive fattening on formulated feed in a recirculating system (age 3+, mean body weight 354 g). The tench fed formulated feed were characterized by a lower carcass and fillet yield, which resulted from higher viscera weight. The meat of these fish contained less water (73.57 vs. 80.23 percent) and protein (16.52 vs. 18.19 percent), and more fat (8.85 vs. 0.58 percent). The qualitative fatty acid composition of the meat, similarly to the relative content of saturated fatty acids and unsaturated fatty acids was not dependent on the diet. The meat of the tench reared on formulated feed contained more monounsaturated fatty acids (42.15 vs. 27.90 percent) and less polyunsaturated fatty acids (33.62 vs. 46.92 percent)

• Publisher: Stanislaw Sakowicz Inland Fisheries Institute
• Subject: ACIDE GRAS / ACIDOS GRASOS / ALIMENT POUR ANIMAUX / ALIMENTACION DE PECES / ALIMENTATION DES POISSONS / CARCASS COMPOSITION / CHEMICAL COMPOSITION / COMPOSICION DE LA CANAL / COMPOSICION QUIMICA / COMPOSITION CHIMIQUE / COMPOSITION DE LA CARCASSE / ESTANQUES PISCICOLAS / ETANG DE PISCICULTURE / FATTY ACIDS / FEEDS / FILET / FILETES / FILLETS / FISH / FISH FEEDING / FISH PONDS / Freshwater / http://www.fao.org/aos/agrovoc#c_15903 / http://www.fao.org/aos/agrovoc#c_16049 / http://www.fao.org/aos/agrovoc#c_16052 / http://www.fao.org/aos/agrovoc#c_16168 / http://www.fao.org/aos/agrovoc#c_1794 / http://www.fao.org/aos/agrovoc#c_2818 / http://www.fao.org/aos/agrovoc#c_2843 / http://www.fao.org/aos/agrovoc#c_2897 / http://www.fao.org/aos/agrovoc#c_2922 / http://www.fao.org/aos/agrovoc#c_2929 / http://www.fao.org/aos/agrovoc#c_7106 / PESCADO / PESO DE LA CANAL / PIENSOS / POIDS A L'ABATTAGE / POISSON (ALIMENT) / SLAUGHTER WEIGHT / TANCHE / TENCA / TENCH / TINCA / Tinca tinca