The contrast between total cholesterol and cholesterol type of cultured rainbow (Oncorhynchus mykiss, Walbaum, 1972) and brook trouts (Salvelinus fontinalis, Mitchill, 1815) cultivated in the same water condition
Keywords:
Rainbow trout, brook trout, total cholesterol, high density lipoproteins (HDL),, ow-density lipoproteins (LDL),, very-low-density lipoprotein (VLDL).Abstract
The aim of this study was to compare serum total cholesterol and cholesterol types of cultured rainbow
trout (CRT) (Oncorhynchus mykiss) and cultured brook trout (CBT) (Salvelinus fontinalis) cultivated
under the same water conditions. Fishes used in the research were randomly captured from pools and
five pieces (five replication) were used for each group. The average weight of fish is 80 g for CRT and is
120 g for CBT. CRT and CBT have been fed with feed with 45 to 50% crude protein twice a day. The
levels of serum samples excluding high density lipoproteins (HDL) obtained from the CBT were found to
be higher (p<0.05) than that of CRT. Finally, higher serum samples in CBT could have resulted from
difference of growth and size, species, age, the cycle of sexual maturity of fish.
