PT  - JOURNAL ARTICLE
AU  - Mareš, Jan
AU  - Jirásek, Jiří
AU  - Baránek, Vít
AU  - Fiala, Jiří
AU  - Kopp, Radovan
TI  - Production effect of various feeds on two size classes of juvenile tench (Tinca tinca) under the conditions of intensive rearing
DP  - 2014 Nov 30
TA  - Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis
PG  - 111--116
VI  - 55
IP  - 1
AID - 10.11118/actaun200755010111
IS  - 12118516
AB  - The experimental rearing of tench (Tinca tinca) juveniles of two size classes with initial individual weight of 0.8 and 1.2 g was performed into flow-through aquaria connected to recirculation system during a period of 63 days. Three feeds (KARPICO Supreme 7 Ex, ASTA 2, L05/CH) with nutrient content of 37/8, 42/7 and 35/7 (% proteins/ fat) were used in the experiment. Achieved values of production indicators - feed conversion ratio (FCR) and specific growth rate (SGR) ranged from 1.84 to 4.15 and from 0.70 to 1.49 %.d<sup>-1</sup>, respectively in relationship to the size class and feed used. More favourable values were achieved with the bigger size class regardless to the diet used (FCR 1.84-3.53 and SGR 0.83-1.49 %.d<sup>-1</sup>) and the best results were achieved when using ASTA 2 feed (2.05 and 1.84 or more precisely 1.36 and 1.49%.d<sup>-1</sup>).