Production effect of different commercial feeds on juvenile tench (Tinca tinca L.) under the intensive rearing conditions

Feeding experiment with juvenile tench was focused on evaluation of production effect of three different commercial feeds with differentiated level energy and protein (Karpico Crumble Excellent Ex, Dan Ex 1352, Pro Aqua Brutfutter). In the 42-day experiment at 26 °C, commercial starters were fed intensively to tench of initially 18.92 mm mean total length and 69.41 mg individual mean body weight. Main monitored indices were – survival rate (%), individual body weight (mg) and specific weight growth rate (%.d−1). The best result was achieved with commercial starter Pro Aqua Brutfutter – mean individual body weight 483.38 mg, specific weight growth 4.44 %.d−1 and survival 99.1 %. Increasing level energy and protein increased production parameters of juvenile fish.

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