Production effect of various feeds on two size classes of juvenile tench (Tinca tinca) under the conditions of intensive rearing
| Autor: | Jan Mareš, Jiří Jirásek, Vít Baránek, Jiří Fiala, Radovan Kopp |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, Vol 55, Iss 1, Pp 111-116 (2007) |
| Druh dokumentu: | article |
| ISSN: | 1211-8516 2464-8310 |
| DOI: | 10.11118/actaun200755010111 |
| Popis: | 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–1, 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–1) 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–1). |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|