Mohammad ANVARI, Mehran Javaheri BABOLI, Hossein OURAJI

Determination of Optimum Weaning Time of Shirbot (Barbus grypus Heckel, 1843) Larvae

The present study was conducted to determine the optimum weaning time of shirbot, Barbus grypus larvae withformulated diet. In this regard, shirbot larvae (8.98±0.06 mg) were fed with 8 experimental diet including A: (3 daysrotifer+18 days formulated diet), B: (6 days rotifer+15 days formulated diet), C: (9 days rotifer+12 days formulated diet), D:(12 days rotifer+9 days formulated diet), E: (15 days rotifer+6 days formulated diet), F: (18 days rotifer+3 days formulateddiet), G: (21 days rotifer), H: (21 days formulated diet). All experiments were carried as random pattern with three replicates.According to the obtained results, there were no significant differences between treatments, A and B and also F and G interms of weight gain (WG) values (P>0.05). The values of specific growth rate (SGR) were not significant betweentreatments, A and C and Also E, F and G (P>0.05). Also, there were no significant differences between treatments, A and B;D and E; E and G; F and G in terms of length increment (LI) values (P>0.05). The treatment F showed more WG (33.51±0.17mg), SGR (7.4±0.01 %) and LI (6.4±0.05 mm) compared to other experimental groups after 21 days experiment (P

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