Study on Condition Factor and Hepatosomatic Index of Bagrus bayad (FORSSKAL, 1775) and Synodontis nigrita (VALENCIENNES, 1840) from Kangimi Reservoir, Kaduna State, Nigeria

Abstract

A study was conducted to determine the condition factor and hepato-somatic index of Bagrus bayad and Synodontis nigrita in a reservoir. The body weight and total length of specimens collected was used for condition factor determination. The range of condition factor for Bagrus bayad was from 0.972 to 2.118. Condition factor variation for Synodontis nigrita was between Synodontis nigrita and 3.050. The monthly condition factor values variation was significant at P<0.05. There was significant variation between male and female condition factor. Seasonal fluctuation in both species was not significant. Hepato-somatic index for Bagrus bayad changed from 1.772 to 4.132 to 1.772. That of Synodontis nigrita was within the range of 1.304 and 2.299. . Hepato-somatic index varied significantly at P<0.05. Sexual hepato-somatic index difference was not significant. Bagrus bayad hepato-somatic index seasonal difference was not significant. The dry and rainy season difference was for Synodontis nigrita was significant. The recommended range of condition factor is above the range obtained in the present study.