Selected production parameters and utility value of rainbow trout (Oncorhynchus mykiss) of two weight sorts
Journal Title: Journal of Animal Science, Biology and Bioeconomy - Year 2017, Vol 35, Issue 3
Abstract
The aim of this study was to compare the selected production parameters and utility value of rainbow trout of two weight sorts. The study involved 20 trouts from a fish farm localized in the Lublin voivodeship. Two sorts considering the weight of fish were distinguished, i.e. M (up to 500 g, n = 10) and D (above 500 g, n = 10). Fattening of fish from M sort lasted for 18 weeks with a total gain averaged 202.57 g per individual, and trout from D sort were fattened for 50 weeks with the average total gain amounting to 602.40 g. The average daily gain for heavy fish amounted to 1.72 g per individual and was significantly (p ≤ 0.01) greater than for lighter ones (about 1.32 g). The percentage of edible parts as well Fulton index were similar in the compared sorts of fish. However, fillets of trouts from D sort had significantly (p ≤ 0.05) lower pH after 24 h and were darker compared with the fillets from lighter fish (M sort).
Authors and Affiliations
Piotr Skałecki, Mariusz Florek, Agnieszka Kaliniak, Anna Pyć
Keywords
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- EP ID EP238697
- DOI 10.24326/jasbb.2017.3.3
- Views 78
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