| dc.description.abstract | The study was conducted to compare the proximate and amino acids composition of ovary
oocytes and liver tissues of wild and captive female broodstock (Sperata aor) during
reproductive season from July to August, 2015 in the Sylhet Agricultural University. A total
of 60 female brood fishes were taken in the current study which consisted of 30 captive and
30 wild individuals. Biometric, reproductive, proximate and amino acids variables were
undertaken for this brood fish research study. There was no significant difference (p>0.05)
between the length of wild (37.80±1.74) and captive (37.90±1.74) broodstock. The fish
length and body weight showed a strong positive relationship (R
= 0.99) in case of both wild
and captive broodstock. Body weight and ovipositor diameter displayed a positive
relationship with ovary weight where R
2
=0.99 respectively. Gonadosomatic
index (%) and Hepatosomatic index (%) value also showed a strong positive relationship in
wild and captive broodstock where R
2
2
=0.99 and R
= 0.9 respectively. Furthermore, the
absolute fecundity was 73837.68±2890.47 and 73810.81± 2881.79 in wild and captive fish
respectively that showed there were no significant difference (P>0.05) in the fecundity values
of both broodstock. In addition, there was also no significant difference (P>0.05) in the
proximate composition such as protein, lipid, and ash in ovary oocytes and liver tissues of
wild and captive broodstock. However, there is slightly higher protein content in the liver
tissues (12.72 ±0.01) and ovary oocytes (12.64 ±0.01) of wild broodstock compare to the
liver tissues and ovary oocytes of captive broodstock. A total of eighteen amino acids were
investigated in the brood fish ovary oocytes and liver tissues of wild and captive broodstock
whereas two essential amino acids, phenylalanine and lysine and two non-essential amino
acids, glutamic acid and glycine highly significant (P< 0.05 ) differences among the amino
acids in the ovary oocytes and liver tissues of wild broodstock. It is assumed that these two
essential amino acids may enhance the spawning activities in wild broodstock of the haor
basin of Sylhet. This study may assist to know the factors for spawning and reproductive
information of broodstock management in captive condition as well as conservation and
protection for sustainable aquaculture management of Sperata aor in the haor basin of Sylhet.
2
2
= 0.89 and R | en_US |
