Iranian Journal of Fisheries Sciences
مجله علوم شیلاتی ایران
IJFS
Agriculture
http://jifro.ir
1
admin
1562-2916
10.18869/acadpub.ijfs
en
jalali
1401
8
1
gregorian
2022
11
1
21
6
online
1
fulltext
en
Research Article: Fingerling beluga sturgeon, Huso huso (Linnaeus, 1758) growth, hematological, biochemical parameters and opercular respiratory rate under hypoxia challenge with levels of dietary folic acid
aquaculture
aquaculture
پژوهشي
Orginal research papers
<span style="font-size:11pt"><span style="line-height:109%"><span style="font-family:Calibri,sans-serif"><span lang="TR" new="" roman="" style="font-family:" times="">Folic acid (FA) is an essential water-soluble vitamin, that is unstable in environmental condition and does not regard in vitamin premixes in spite of its importance. In this study 270 beluga sturgeon fingerlings with weight of 5-8 g were fed by various levels of FA: 0.6 (Control/treatment 1), 2.68 (treatment 2), 3.72 (treatment 3), 4.84 (treatment 4) mg kg<sup>-1</sup> feed with three replications for 56 days. Effect of treatment groups on growth, hematological, biochemical parameters before and after stress and opercular respiratory rate (ORR) during stress was investigated in fish fingerlings. The results showed the treatments has significant differences on FCR, SGR, feed efficiency and weight gain (<i>p</i><0.05). the treatments has significant differences with the control group on red blood cells (RBC) count, hemoglobin (Hb) and Hct (P<0.05). Before stress, cortisol and glucose levels among treatment groups had no significant differences, but after stress they had. Minimum and maximum responses in cortisol levels were observed in treatment two (427.92±6.05 ng mL<sup>-1</sup>) and control groups (830.32±5.97 ng mL<sup>-1</sup>), respectively. Minimum glucose levels (43.75±1.49 ng mL<sup>-1</sup>) in control group and the maximum in treatment two (58.25±1.49 ng mL<sup>-1</sup>) were observed.There were significant differences for ORR in 0-5, 5-10, 10-20, 30-40 minutes during oxygen challenge among treatment groups (<i>p</i><0.05). But this indicator in 20-30 minutes was not affected by treatments. The results of this study, showed that the fish with FA 3.72 mg kg<sup>-1 </sup>diet have more resistance against environmental oxygen challenge, therefor can be stated FA may lessen the negative effects of stress in beluga sturgeon fingerling.</span></span></span></span>
Folic acid, Blood serum, Opercular respiratory rate, Oxygen challenge, Beluga sturgeon
1558
1572
http://jifro.ir/browse.php?a_code=A-10-4141-2&slc_lang=en&sid=1
A.
Yeganeh Kari
yeganeh.ataollah@gmail.com
100319475328460049181
100319475328460049181
No
Department of fisheries, Lahijan Branch, Islamic Azad University, P.O. Box 1616, Lahijan, Iran.
H.
Ershad Langroudi
ershad5353@gmail.com
100319475328460049182
100319475328460049182
Yes
Department of fisheries, Lahijan Branch, Islamic Azad University, P.O. Box 1616, Lahijan, Iran.
A.
Valipour
valipour40@gmail.com
100319475328460049183
100319475328460049183
No
Inland Waters Aquaculture Research center, Iranian Fisheries Science Research Institute (IFSRI)
S.
Alinezhad
soheilalinezhad47@gmail.com
100319475328460049184
100319475328460049184
No
Institute of Agricultural Education and Extension, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran