Study of Some Morphological Characters of Three Trout Breed Farmed in Salmonid Exploitations from Moldova

Study of morphological characters at fish by means of biometry is a frequently utilized method and consists in determining the variability of characters in groups of individuals, by direct measurement, weighting and statistical processing of obtained data. Effectuation of body measurements and weighting is used to determine the increase in length of fish and to evaluate the general physiological condition. Brook trout, rainbow trout , and brown trout were the object of the current study by analyzing of 50 individuals, 10 individuals in each batch (F 1, F 2, C 1 C 2 and I 1 ), from two trout farms from Moldova. After processing the obtained data were calculated the most representative indexes and maintenance coefficients. The obtained values were between 3.49 at batch F 1 and 3.94 at batch I 1 for profile index; 1.5 at batch I 1 and 1.75 at batch F 1 for Fulton coefficient; 1.47 at batch F 2 and 1.6 at batch I 1 for Kiselev index; 41.36 for batch F 1 and 47.94 at batch C2 for thickness index; 19.94 C 1 batch and 22.08 at F 1 batch for fleshy index I, and 19.05 C 2 batch and 21.2 at I 1 batch for fleshy index II. Having in view the obtained results we can conclude that the analyzed fishes had a good state of maintenance.