ANALYSIS OF LIPID AND LIPID-FRACTIONS OF SOME FRESHWATER FISHES AND THEIR INTER-RELATIONSHIP
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Authors
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P. K. Nanda
Indian Veterinary Research Institute
(Deemed University)
Izatnagar, Bareilly (UP.), India- 243 122
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N. P. Sahu
Central Institute of Fisheries Education Versova, Mumbai-61
Abstract
Two fish species each from carnivorous ( Clarias batrachus, Channa
. punctatus ), omnivorous ( Cyprinus carpio, Cirrhinus reba), and plankton feeder
( Catla catla, Lab eo rohita) were collected from freshwater sources under natural
habitat to study their total lipid (TL) and lipid-fractions. Significant
relationship between these parameters was also worked out. The variation of
total lipid and lipid-fractions in tissues of freshwater fishes were not
significantly different (P>O.OS). But a higher trend of total lipid and glyceride
(TGL) contents were found in carnivores followed by omnivores and least in
plankton feeders. The trend was reverse for total phospholipid, cholesterol
and free fatty acids. TGL content in all class of fishes was significantly related
with TL (P<0.01), phospholipid (PL) (P<0.001), cholesterol (P<O.OS), free fatty
acids (P<O.OS) and monoglycerides (P<0.001). Similarly total lipid was linearly
related with total glycerides (TL = -3.02 + 0.10 TGL) and phospholipid (TL =
7.13-0.12 PL). From this study it is concluded that almost ali lipid- fractions
of freshwater fishes can be predicted easily from total lipid content of the
tissue.
Keywords: - Freshwater fish, lipid, phospholipid, cholesterol, triglycerides,
free fatty acids
