Proximate body composition analysis implies percent composition of moisture, lipids and
protein. The aim of the study of to evaluate the effect of the various levels of dietary protein
on the body composition of Labeo calbasu. Fish were fed with 15%, 20% and 25% crude
protein in diet in treatment 1 (T1), treatment 2 (T2) and treatment 3 (T3), respectively. At the
end of feeding trial, a total of 120 samples of Labeo calbasu, 40 belonging to each of the
three dietary protein treatments were evaluated for proximate body composition. Mean water,
ash, fat and protein in wet weigh of L. calbasu were ranged 76.59-77.19%, 3.63-4.68%, 4.08-
4.86% and 13.87-15.66%, respectively, in different treatments. Ash and fat percentages were
found highest in T1, water parentage was found highest in T2, while mean protein content
percentage value was found highest in T3 (25% crude protein). All the body constituents
were found to be highly correlated (P<0.001) with the fish size (length and weight) in T1, T2
and T3, except for ash contents in T2 (r = 0.472) and T3 (r = 0.412) showing correlation at
P<0.01. Slope (b value) indicated positive correlations in all the relationships between fish
size and different constituents. No studies on L. calbasu have yet attempted to evaluate the
effect of dietary protein levels on body composition and to relate the size of the fish with the
parameters of whole body composition. Thus, this study will provide the first reference from
Pakistan.
Key words: Carp, Labeo calbasu, dietary protein, Fat, Ash, Protein contents, Regression analysis, Fish size
https://ijbpas.com/pdf/2019/November/MS_IJBPAS_2019_4855.pdf
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https://doi.org/10.31032/IJBPAS/2019/8.11.4855
