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Production Cost of Heterobranchus longifilis (Valenciennes, 1840) Fingerlings in the Ponds Fertilized with Poultry Droppings



Author(s)

Hyppolite Agadjihouèdé^{1, 4}, Clément Agossou Bonou², Carolle Avocèvou-Ayisso³ and Philippe Adédjobi Lalèyè⁴

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DOI:10.17265/2159-5828/2017.02.004

1. National University of Agriculture, Aquaculture School of Vallée, Laboratory of Aquaculture, Biology and Aquatic Ecology Research, Box: 43 Kétou, Republic of Benin
2. University of Abomey-Calavi, Polytechnic School of Abomey-Calavi, Laboratory of Applied Biology Research, Republic of Benin
3. National University of Agriculture, Forestry and Wood Engineering School, Box: 43 Kétou, Republic of Benin
4. University of Abomey-Calavi, Faculty of Agronomic Sciences, Laboratory of Hydrobiology and Aquaculture, 01Box: 526; Republic of Benin

This study aims to evaluate the production cost of Heterobranchus longifilis larvae reared in fertilized fish ponds. Experiment was carried out in two fish ponds. Each fish pond was filled with 200 liters of water and fertilized with dry poultry droppings (dose: 0.6 g.L^-1) and zooplankton was inoculated with 83±13 individuals/L. Six days after inoculation of zooplankton, larvae of H. longifilis of 2 days after post-hatching were directly introduced into ponds with 300 individuals/m³. These larvae used exclusively zooplankton during the first 7 days. From the 8th day, larvae were fed with Coppens feed until 30 days. At the end, the survival rates were ranged between 58.33% and 56.67%. Final mean weights were brought up to all the ponds and were not significantly different (p > 0.05). The production costs ranged between 2.55 FCFA and 2.60 FCFA per fingerling with ratio production cost/weight gain around 0.80 FCFA/g in each pond. Then, this production system of fingerlings in fertilized ponds is very efficient and could be popularized in the rural fish farms.

Production cost, fingerlings, Heterobranchus longifilis, fertilized ponds.