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Phạm Mỹ Dung(1), Phạm Nguyên Ngọc, Tạ Thị Bình

ảnh hưởng của mật độ ương nuôi đến tăng trưởng và tỉ lệ sống của cá Hồng Mỹ (Tsciaenops ocellatus) giai đoạn cá giống

Impacts of stocking density to the growth performance of (Tciaenops ocellatus) fingerlings fish in stage of small young fish for breeding

Nông nghiệp & Phát triển nông thôn

2013

2

77-81

1859-4581

The experiment was carried out in net hapas suspended in an earthen pond at size of 4,200 m2. Fish were stocked at three different densities. These were 40 fish/m2, 50 fish /m2 and 60 fish/m2 and each treatment were repeated in three hapas. Results after rearing 40 days, the fastest growing fish in CT1 (0.20 gr / day and 0.16 cm / day), followed by CT2 (0.19 gr/day and 0.15 cm/day) and the lowest CT3 (0.13 gr /day and 0.15 cm /day). Weight and length average of fish at the end of the experiment in all formulas, respectively (8.6 gr / fish, 8.7 cm / fish), (8.2 g / fish, 8.4 cm / fish) and (6.1 g / fish, 8.6 cm / fish) in CT1, CT2 and CT3. Survival rate fish in cn (83.33 percent) higher than CT2 (80.00 percent) and cn (77.77 percent). According to the results of ANOVA analysis show that statistically significant difference (p 0.05). Research results suggest that the rearing Tciaenops ocellatus at the density 40 fish/m2 have been promote.

TTKHCNQG, CVv201