C.E. Nistor

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RESEARCH REGARDING VARIATION OF MUSCULAR FIBER DIAMETER FROM ONCORHYNCHUS MYKISS, SALMO TRUTTA FARIO AND SALVELINUS FONTINALIS BREED FARMED IN NE PART OF ROMANIA

C.E. Nistor, I.B. Pagu, E. Măgdici, G.V. Hoha, S. Paşca, B. Păsărin

Abstract
Research was carried out on three trout breeds, rainbow trout (Oncorhynkus mykiss), brown trout (Salmo trutta fario) and brook trout (Salvelinus fontinalis), which are the most farmed salmonid species in N-E part of Romania. To assess the meat quality of rainbow, brown and brook trout we considered that it's necessary to make some histological investigations about muscle fibre diameter. The research was done using fish of two years old. Muscle was systematically sampled and differentiated by breed and body mass and the results were statistically analyzed and interpreted. The comparative statistical analysis revealed significant differences between the three trout breeds. After the histological examination of rainbow, brown and brook trout muscles the conclusion that emerges is whatever of breed, the muscle fibre structure and fineness has a significant trend according to the dynamics of growth.

Key words: morphology, histological, muscle, fibre, trout