Evaluation of Hybridization in Two African Catfishes (Siluriformes, Clariidae): Exotic (Clarias gariepinus Burchell, 1822) and Native (Clarias jaensis Boulenger, 1909) Species under Controlled Hatchery Conditions in Cameroon

Table 1

Characteristics of weight growth and food consumption index of fry according to genetic type in reciprocal hybridizations of C.gariepinus × C. jaensis at 32 days of age in happas.

Growth characteristics and CI	Genetic types
	Fcg × Mcg	Fcg × Mcj	Fcj × Mcj	Fcj × Mcg
imW (mg)	2.33 ± 0.05	2.30 ± 0.10	4.53 ± 0.05	4.40 ± 0.09
fmW (mg)	115.53 ± 0.64^a	104.03 ± 0.40^b	90.93 ± 0.64^c	115.06 ± 2.30^a
mWG (mg)	113.2 ± 0.58^a	101.71 ± 0.31^b	85.4 ± 0.58^b	110.66 ± 2.21^a
ADWG (mg day^−1)	3.53 ± 0.02^a	3.17 ± 0.01^a	2.7 ± 0.02^b	3.45 ± 0.07^a
SRG (% day^−1)	12.13 ± 0.09^a	10.35 ± 0.15^b	9.36 ± 0.03^c	11.21 ± 0.05^a
K factor (%)	0.79 ± 0.08^a	0.85 ± 0.34^a	0.79 ± 0.23^a	0.58 ± 0.05^b
CI	2.81 ± 0.05^a	3.23 ± 0.11^b	3.87 ± 0.05^b	2.91 ± 0.09^a

Note: a, b, c: values with the same alphabetic letters on the same line are not significantly different (). The female was named first. imW: initial mean weight; fmW: final mean weight; mWG: mean weight gain; ADWG: average daily weight gain; SGR: specific growth rate; CI = consumption index.