EFFECT OF LOW COST FEED ON THE GROWTH PERFORFANCE OF PRAWN (MACROBRACHIUM ROSENBERGII) IN GHER FARMING SYSTEM

M. A. H.  Chisty; S. M.  Rahman

doi:10.53808/KUS.1999.1.2.245-249-Ls

Authors

M. A. H. Chisty Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna 9208, Bangladesh
S. M. Rahman Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna 9208, Bangladesh

DOI:

https://doi.org/10.53808/KUS.1999.1.2.245-249-Ls

Keywords:

Macrobrachium rosenbergii; Galda; Prawn feed; Gher culture, Growth; Water quality

Abstract

Fresh water giant prawns (Macrobrachium rosenbergii) were reared in 12 mini ghers at a density of 2 individuals /m² for 90 days. The average initial weight of the species was 7.88 ± 0.023g. There were four treatments each of which with three replications. The control was done by feeding the prawns with a commercial prawn feed. Two farm made low cost feed, incorporating soybean and mustard oil cake, were prepared and fed the prawns to compare the growth performance with the commercial prawn feed and designated as T-1 and T-2 respectively. In another treatment, prawns were kept in natural condition and designated as T-3. The water quality of the ghers was monitored and found to be within acceptable limits. There was a significant difference (P<0.05) among the treatments. Although some nutrition was derived from the natural productivity of the gher, it was not sufficient for the optimum growth of the reared species indicating lowest growth in T-3. Good growth performance was observed in control and T-1 and no significant differences (P>0.05) were found between them. Relatively lower growth rate was observed in T-2. Though control indicated the best growth performance, soybean containing supplemental feed could be used to obtain satisfactory production in relation to economics of production.

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