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).
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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.
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