Turkish Journal of Fisheries and Aquatic Sciences
2013, Vol 13, Num, 1 (Pages: 111-117)
A Preliminary Study on the Dietary Protein Requirement of Parachanna obscura (Günther, 1861) Larvae
Diane Kpogue 1 ,Herman Gangbazo 1 ,Emile Fiogbe 1
1 Unité de Recherches sur les Zones Humides, Département de Zoologie et Génétique, Faculté des Sciences et Techniques, Université d’Abomey - Calavi, B.P. 526 Cotonou, Bénin
DOI :
10.4194/1303-2712-v13_1_14
Viewed :
4282
-
Downloaded :
4866
Effects of increasing dietary protein on growth parameters, feed utilization were studied in Parachanna obscura larvae
with initial body weight 0.12 ± 0.01 g. The experiment was conducted during 28 days in re-circulating system composed of 15
tanks containing 20 L of water each. 50 larvae were stocked per tank. Five semi – purified isoenergetic experimental diets
were formulated with different protein level (35, 45, 50, 55 and 60 g/100 g of diet). Each diet was tested in triplicate. Growth
parameters and feed utilization were significantly influenced by dietary protein (P<0.05). Specific Growth Rate varied from
8.86 to 11.53%/d. Best Specific Growth Rate, Feed Efficiency and Productive Protein Value were obtained with diet
containing 55% of protein. The highest body protein content was found with larvae fed by diet with 55% of protein (P<0.05).
Feed Efficiency and Productive Protein Value of fish fed on 45, 50 and 60% dietary protein were not significantly different
(P>0.05). Second degree polynomial regression and broken line models were used to analyze the relationships between
dietary crude protein and SGR. Based on the results of this study, protein requirements of P. obscura larvae ranged from 45
and 55.5% of the diet.
Keywords :
Parachanna obscura larvae, protein requirement, growth, feed utilization