| dc.description.abstract | The study was conducted to investigate and compare the growth performance of four Tilapia
strains in hapa nursing with the aim to find out the best strain of tilapia. The experiment had
conducted by four treatments with five replicates each during date, month to date, month.
BFRI source tipalia collected from BFRI HQ, Mymensingh stocked in Treatment-1; unknown
source from Hi-Tech Tilapia Hatchery Dagoanbhuiya, Feni in Treatment-2, Philippines strain
from Green Field Tilapia Hatchery, Laxmipur in Treatment-3 and fry from Breeding Cohort,
Sonar Bangla Hatchery, Bamna, Barguna in Treatment-4. The individual stocking weight (g)
of fry was average 0.01g. The fries were stocked in 20 hapa at same stocking density of
600fish/m
2
. Each of the hapa was 2m × 1m × 1m size and fixed in an earthen ponds.
Supplementary feed with 31.29% of protein was given at the rate of 40% of the body
weight of fry per day manually, four times a day at the beginning of the experimental period
and reduced to 25% of their body weight and continued until end of the research. Statistical
analysis showed that fry of Treatment-4 strain was the best strain with significantly (p < 0.05)
higher gross yield (2.13 kg/ m
) than the strains of other
treatments. The strain of Treatment-4 had the fastest growth rate, whereas the lowest
performing strain was that from Treatment-2.The survival was found highest in Treatment-4
(80%) whereas the lowest in Treatment-3. Treatment-4 stain also showed the best feed
conversion ratio 1.62 than others. Considering the overall performance it can be concluded
that tilapia strain collected from Breeding Cohort source is best among the four strains.
However, further research is needed to compare with more strains of tilapia from different
water body to find out the best strain of Tilapia.
2
) and Net yield (2.12 kg/m
2 | en_US |
