The survival and growth of hybrid Clarias gariepinus and Heterotis longifilis fed with live and frozen Dapthnids

Ojutiku, R.O. and Lamai, S.L. and Tsadu, M.S. (2005) The survival and growth of hybrid Clarias gariepinus and Heterotis longifilis fed with live and frozen Dapthnids. In: 19th Annual Conference of the Fisheries Society of Nigeria (FISON) , 29 Nov - 03 Dec 2004 ,Ilorin, Nigeria, pp. 767-773.

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Abstract

Six glass tanks, each containing dechlorinated tap water and stocked with 3-day-old Heterobranchus, larvae hybrid between, Heterobranchus longifilis (male and Clarias gariepinus (female) were administered two types of feeding trials viz: live and frozen Dapthnids. Each treatment was replicated three times. The larvae were each fed approximately 50 Dapthnids per feeding time for fifteen days. Morphometric measurements of weigh and total length were taken before and after the experiment, and water quality parameters were monitored throughout the experimental period. At the end of the experiment, fish larvae fed frozen, Dapthnids, showed higher survival rate than Heterobranchus fed live Dapthnids. Even though the statistical analysis revealed that there was no significant difference (P>0.05) in survival. However, the Heteroclarias fed live dapthnids performed better in terms of growth rate than Heteroclarias fed frozen dapthnids. The statistical analysis did not show significant difference (P>0.05) between the final length and weight of two treatments. Heteroclarias fed live dapthnids had higher length and weight than Heteroclarias fed frozen dapthnids. It was therefore concluded that based on this experiment there is the likelihood that frozen zooplankton (Daphnids) do not encourage growth of Heteroclarias, but improves its survival. However, it's suggested that frozen zooplankton can be used to supplement live zooplankton in situation of sacrcity

Item Type: Conference or Workshop Item
Title: The survival and growth of hybrid Clarias gariepinus and Heterotis longifilis fed with live and frozen Dapthnids
Personal Creator/Author:
CreatorsEmail
Ojutiku, R.O.
Lamai, S.L.
Tsadu, M.S.
Page Range: pp. 767-773
Date: 2005
Event Title: 19th Annual Conference of the Fisheries Society of Nigeria (FISON)
Event Type: Conference
Event Location: Ilorin, Nigeria
Event Dates: 29 Nov - 03 Dec 2004
Issuing Agency: Fisheries Society of Nigeria
Uncontrolled Keywords: Nigeria; diets; feeding experiments; growth rate; survival; zooplankton; Clarias gariepinus; Daphnia; Heterobranchus longifilis
Subjects: Aquaculture
Biology
Item ID: 4112
Depositing User: Ms Maria Kalentsits
Date Deposited: 31 Aug 2010 13:11
Last Modified: 29 Sep 2011 16:32
Related URLs:
URI: http://aquaticcommons.org/id/eprint/4112

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