Effect of ovaprim on cafish breeding.

Artificial spawning of two African Catfish species viz: C. gariepinus and H.
longifilis of 0.18 – 0.64kg and 0.53 – 1.63 kg
respectively were carried
out using various doses of Ovaprim with carp pituitary extract (C.P.E.)
as the control. Oocyte
maturation and ovulation
were successfully effected
with Ovaprim doses of 0.2, 0.25, 0.30, 0.35, 0.40
and 0.50ml/kg for C.
gariepinus and 0.30, 0.35,
0.40, 0.45, 0.50ml/kg for
H. longifilis. Latency
period was between 8 – 11.5 hrs at 26.3ºC – 28.0ºC
but was indirectly
influenced by
temperature, species and
type of hormone. Hatching was between 22
– 30 hrs at a temperature
range of 25.45 – 26.1ºC and was independent of hormone dosage.
Percentage deformed try
was relatively low and
ranged from 0.16 ± 0.28 –
1.08 ± 0.36 in C. gariepinus and 0.52 ±
0.59 . 1.50 ± 0.73 in H. longifilis. Fry survival
rate was high and ranged
from 89.44 ± 0.27 to 93.47
± 2.18 in C. gariepinus and 78.57 ± 11.12 to 90.7 ±
3.90 in H. longifilis. Physico-chemical
parameters were within
the desired range for catfish larval rearing in all the treatments. For more information or consultancy call our help line 08032861326.

Share this: