Polyculture du machoiron Chrysichthys nigrodigitatus avec Oreochromis niloticus en etang

Oteme, J.Z. (1991) Polyculture du machoiron Chrysichthys nigrodigitatus avec Oreochromis niloticus en etang. Journal Ivoirien d'Oceanologie et de Limnologie, 1(1), pp. 9-15.

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Abstract

Fingerling catfish Chrysichthys nigrodigitatus (P=4.0 g, FL=65.3 mm) and Oreochromis niloticus (P=11.2 g, TL=84.8 mm) were stocked in 0.06 ha earthen ponds at Pass (Annex of the Aquaculture Research Station at Layo, Côte d'Ivoire). The ponds were stocked at densities of 6700 catfish per ha, and 6700 catfish with 3350 tilapias per ha. The study lasted from February to August 1985 and the fish were fed daily at 6% of the estimated catfish biomass with 32% protein pellet. There were no differences in mean weekly water temperature (p > 0.05). The dissolved oxygen concentration was higher in ponds where tilapias were added (p < 0.05) The presence of tilapias seems to have improved water quality and did not affect growth and production of catfish (p > 0.05). Their presence also significantly increased total fish yield (p < 0.05) by 23.5%. There were no significant differences (p > 0.05) in catfish survival between the two production systems.

Item Type: Article
Title: Polyculture du machoiron Chrysichthys nigrodigitatus avec Oreochromis niloticus en etang
Personal Creator/Author:
CreatorsEmail
Oteme, J.Z.
Journal or Publication Title: Journal Ivoirien d'Oceanologie et de Limnologie
Volume: 1
Number: 1
Page Range: pp. 9-15
Date: January 1991
ISSN: 1018-0354
Issuing Agency: Centre de Recherches Oceanographiques, Cote d'Ivoire
Uncontrolled Keywords: Côte d'Ivoire; Chrysichthys nigrodigitatus; catfish; Oreochromis niloticus; tilapia; polyculture; production
Subjects: Aquaculture
Management
Item ID: 7505
Depositing User: Ms Maria Kalentsits
Date Deposited: 30 Jan 2012 09:52
Last Modified: 26 Jul 2012 08:08
URI: http://aquaticcommons.org/id/eprint/7505

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