PROXIMATE TISSUE COMPOSITION OF Lates niloticus (L. ), Synodontis schall (BROCH AND SCHNEIDER) AND Sarotherodon galilaeus (TREWAVAS) FROM ZARIA DAM.
PROXIMATE TISSUE COMPOSITION OF Lates niloticus (L. ), Synodontis schall (BROCH AND SCHNEIDER) AND Sarotherodon galilaeus (TREWAVAS) FROM ZARIA DAM.
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Date
1988-09
Authors
SADIKU, SULEIMAN OMEIZA EKU
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Abstract
A total of 272 specimens, comprising 91 Lates niloticus.
95 Synodontis schall and 86 Sarot.herodon galilaeus were
biometricaly examined and analysec for muscle proximate
composition from February, 19S7 to January, 19SS.
Lengtr--weight relationship study indicates isometric
growth pattern in S. schall and S. galilaeus while that of
L. niloticus was negatively allometric. Effect of size on
composition is not significant in any of the species (P>0.05).
Monthly variation of the proximate constituents was
significant (P<0.05) except water. Protein and lipid were
higher in the dry season than rains season including periods
of high water level in L. niloticus and S. schall, except the
protein of S. schall that was lower in the dry season. Protein
and lipid composition of S. galilae-s showed discontinuous
maxima (Peaks). Monthly variation of ash was not seasonal.
The major and minor amino acids arc mineral contents of the
three species were higher in the drv season than in the rains
season in most cases. These proximate muscle constituents
except lipid, and their energy values wiere not significantly
different between the species (P>0.05).
There was no significant correlation between water and
other constituents (P>0.05) except with lipid of S. schall
that was highly significant and inverse, and protein of S.
galilaeus tuat was also significant but direct (P<0.05).
Description
A thesis submitted to the Postgraduate School,
Ahmadu Bello University, Zaria in partial fulfillment
of the award of the degree of Master of Science in
Frisheries.
Department of Biological Sciences,
Ahmadu Bello University,
Zaria, Nigeria.
Keywords
PROXIMATE TISSUE,, COMPOSITION,, Lates niloticus,, Synodontis schall,, BROCH AND SCHNEIDER,, Sarotherodon galilaeus,, TREWAVAS,, ZARIA DAM.