The aim of this diploma thesis was to elaborate the overview of applied strategies in salmonid rearing under the conditions of intensive aquaculture systems and to evaluate their production effect. Two feeding tests run within the NAZV program QJ1210013. The first feeding test was carried out from 15th May to 12th June 2014 in the Department of Fisheries and Hydrobiology, MENDELU. For this feeding test monosex female population of rainbow trout (Oncorhynchus mykiss) was included. Two types of dry food were administered ALLER AQUA -- ALLER SILVER and BioMar -- INICIO 918. The second feeding test was carried out from 11th June to 3rd September in the salmon farm in Pravíkov (BioFish company). To this feeding test, crossbreeds of brook trout (Salvelinus fontinalis) and arctic char (Salvelinus alpinus) were included. Two types of dry food were administered ALLER AQUA -- ALLER GOLD and BioMar -- EFICO ENVIRO 920. The length-weight parameters of individual fish were measured at the beginning and at the end of tests. The amount of administered feeds was recorded. Also basic physico-chemical properties of water were monitored. At the end of these tests the production (FCR, SGR, PER, etc.) and economy parameters were evaluated. The most favourable FCR (0,63) was achieved in the crossbreeds of brook trout and arctic char fed by ALLER GOLD. The most rapid growth of fish (SGR = 3,68) was achieved in the fish of monosex female population of rainbow trout fed by INICIO 918. The greatest yield (3 700 CZK per 1m3 of water) was achieved in crossbreeds of brook trout and arctic char fed by EFICO ENVIRO 920, when fed costs were 1 487 CZK per 1m3.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:250659 |
| Date | January 2015 |
| Creators | Bláha, Martin |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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