FECUNDITY, GROWTH PARAMETERS AND SURVIVAL RATE OF THREE AFRICAN CATFISH (Clarias gariepinus) STRAINS UNDER HATCHERY CONDITIONS

Yıl 2017, Cilt: 3 Sayı: 2, 75 - 81, 24.02.2017

Mary A. Opiyo Paul Orina Harrison Charo-karisa

https://doi.org/10.3153/JAEFR17010

Öz

Three
strains of African catfish (Clarias
gariepinus) from the Netherlands (Dutch), Indonesia and Kenya (Lake
Victoria) were studied in hatchery conditions to compare their fecundity,
growth performance and survival rates. 
The results indicated that fecundity was significantly higher (P < 0.05) in the Kenyan strain (145715.17 eggs Kg^-1) and lower in the
Indonesian strain (86354.55 eggs Kg^-1).
The Indonesian strain had significantly (P< 0.05) higher final mean
body weight, specific growth rate and food conversion ratio. Survival rate was
significantly different among the strains (P
<0.05); with the Indonesian strain having the highest survival rate
(68.13 ±4.50%) and the Kenyan strain the lowest survival of 23.28 ±0.40%. It
was concluded that significant variations existed in the three strains of C. gariepinus available in Kenya and
development of a population involving the three strains is ideal, but should be
accompanied by further studies over a wide range of culture systems and
conditions. Meanwhile, the Indonesian strain is recommended for aquaculture in
Kenya.

Anahtar Kelimeler

Growth, Clarias gariepinus, Strains, Fecundity

Kaynakça

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