Hodnocení produkční účinnosti krmiv v chovu lososovitých ryb

This diploma thesis deals with the nutrition and evaluation of salmonid fish species, more precisely Riverine brown trout. In the practical part, I have dealt with two studies, by monitoring the growth of fish from 50 g to market weight and monitoring the growth of fish from 125 g to market weight. In both studies, food that was used to fed was a feed Aller gold 3 mm, Aller gold 4,5 mm and Coppens ultra 4,5 mm. In the first test, I fed fish on an average for 180 days to achieve a market weight of 268,14 g. In second test on an average for 108 days to achieve a market weight of 342,72 g. Furthermore, on these fish were performed partial tests such as the FCR fodder, the specific growth rate of the SGR, fish survival per period, cumulative fish survival, relative fish gain over the reference period, and the relative ratio of FCR/SGR. The system in which the fish were kept was flowing. As a result, the values evaluated by the software differed from the measured values, mainly because the software evaluated the values for all the ponds and only for the whole time of breeding from the input and final data, whereas I evaluated the values only for the individual ponds and the individual stages of the breeding, which take into account interventions in the pond stock. Therefore, all FCR feed rates and survival percentages differ from those measured. Deviations are noticeable in the first test, the "KASA" program evaluated the FCR at an average of 1.31 and my value was 0.93; the survival rate was 63.82% on average, and my score was 88.41%. In the second test, the results differed again for the same reason. The software evaluated the FCR on average at 0.97 and my average score was 0.94; the survival rate for the second test evaluated the program at 102.61% and my score was 97.05%. Comparing the test period, the more favorable results were obtained when using fish with an average weight of 125 g