Comparing the Growth Performance and Fatty Acid Profile of Brown Trout (Salmo trutta macrostigma) and Rainbow Trout (Oncorhynchus mykiss) Reared in Concrete Ponds and Net Cages

Abstract

Engin, S. and Altan, O., 2022. Comparing the growth performance and fatty acid profile of brown trout (Salmo trutta macrostigma) and rainbow trout (Oncorhynchus mykiss) reared in concrete ponds and net cages. Journal of Coastal Research, 38(5), 968–975. Coconut Creek (Florida), ISSN 0749-0208. This study aimed to compare the growth performance and fatty acid profiles of rainbow trout (Oncorhynchus mykiss) and brown trout (Salmo trutta macrostigma) fry reared in concrete ponds and net cages. In the study, which lasted for 270 days under commercial production conditions, an initial live weight of 5.03 g per fish was used and placed in concrete ponds and net cages in two replications and equal numbers. The specific growth rate ranged between 1.78 and 1.81%, but there was no significant difference among the experimental groups (p >0.05). In the study, although the feed conversion ratio varied between 1.04 and 1.06, no significant difference was determined among the experimental groups (p >0.05). On the contrary, daily average weight gain was higher for both species in net cages and was significantly different from that of fish in the pond (p <0.05). As a result of the fatty acid analysis of the study, it was determined that the saturated fatty acid, monounsaturated fatty acid, and polyunsaturated fatty acid values were different among the groups (p <0.05). The results show that brown trout in fish farm conditions succeeded as an efficient aquaculture business at least as much as rainbow trout.