Journal of Fisheries International

Year: 2006
Volume: 1
Issue: 2
Page No. 132 - 135

Submission of Article for Publication-Implications of Carcass Quality and Condition Factor to the Processing of Some Selected Freshwater Fish Families

Authors : O.A. Oyelese

Abstract: The implications of carcass quality and condition factor to the consumers, preservators and processors was studied using the following common representative members of five selected fresh water fish families. They are family. Clariidae-Clarias gariepinus, Mochkidae-Synodontis clarias, Cichlidae-Tilapia nigrodigitatus, Bagridae-Chrysichthys nigrodigitatus, Channidae-Channa obscura.Four fish replicates (2 females and 2 males) were used for each fish family. Each fish specimen were dissected after taking the standard /Total length and weight readings. The visceral organs were removed and the wet carcass weight were recorded. Samples of each family representative were taken and subjected to initial proximate analysis. The dry carcass weight of the fish specimen were also taken after oven drying at 105° for 24 h in order to determine the moisture content. All length and weight reading were replicated four times in each case, the condition factor (k) and carcass quality factor (productive potential carcass quality factor (PPCQF) was also calculated. The condition factor (K) and carcass quality factor (PPCQF) of the fresh water fish families were significantly different (p<0.05) from each other with highest condition factor (K) of 2.32 and lowest carcass quality factor (PPCQF) of 1.2855 recorded in Tilapia niloticus while the lowest condition factor (k) 0.71 and highest carcass quality factor 2.1764 was recorded in Clarias gariepinus. Also in terms of carcass quality Synodontis clarias with PPCQF of 1.8381 is second, followed by Chrysichthys nigrodigitatus, 1.5133 and fourth Channa obscura with PPCQF of 1.4429 and also with lower values of 1.19, 0.87 and 0.80 condition factor recorded respectively. The carcass quality of a fish is not determined by the Astate of well being >= or condition factor but it is a function of its protein and fat content as shown in this study with higher values of protein (62.00%) and fat (5.80%) recorded for Clarias gariepinus compared to lower crude protein (39.61%) value and fat(4.58%) recorded for Tilapia niloticus. However the latter is better adopted for culture in the wild with its high condition factor (2.32) value. While the culture of Clarias gariepinus with a low condition factor (0.71) is highly favoured under aquaculture practices. The culture of other fresh water fishes also with low condition factor like Synodontis (k = 1.19), Chryschthys (k = 0.87) and Channa (k = 0.80) should also be promoted under well monitored culture condition.

How to cite this article:

O.A. Oyelese , 2006. Submission of Article for Publication-Implications of Carcass Quality and Condition Factor to the Processing of Some Selected Freshwater Fish Families. Journal of Fisheries International, 1: 132-135.

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