Effect of Three Commercial Feeds on the Growth and Survival of Juvenile Jawfish (Chrysichthys Nigrodigitatus) Rered in Happas at the Layo Experimental Aquaculture Station (Dabou, Côte d’Ivoire)

A six-week study was carried out at the Layo experimental station (Dabou) to investigate the effect of three commercial feeds on the growth and survival of Chrysichthys nigrodigitatus juveniles in happas. To this purpose, 225 fish with an initial average weight of 22.80 ± 4.05 g and an initial average length of 141.00 ± 11.00 mm were used to form three batches (batch 1, batch 2, batch 3) in triplicate, in 50-liter happas, at a density of 0.5 individuals per liter. The fish were fed at 10% of their biomass with Biomar inicio plus (batch 1), Alimpoi (batch 2) and Koudijs (batch 3). Ten individuals, randomly sampled per week, were weighed and measured individually. The average values for temperature, dissolved oxygen and pH were 28.20 ±1.80°C, 5.80 ± 0.60 mg/L and 6.10 ± 0.30 respectively. At the end of the experiment, the results show that the highest values for weight growth, total average length, ADG and CI were recorded in individuals fed with Alimpoi feed, at 35.43 ± 0.98 g, 156.67 ± 0.76 mm, 0.30 ± 0.06 g/d and 3.00 ± 26.96 respectively. Survival rate and biomass were higher in individuals fed with Biomar. The respective values obtained were 69.33 ± 4.98% and 624.17 ± 36.52 g. It would be desirable to include the economic aspect in the study, in order to assess the production costs for each feed.