The effect of levothyroxine sodium hormone on percentage of hatching, survival rate, and the early growth stage of rainbow trout (Oncorhynchus mykiss )

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AKBARY P.; FEREIDOUNI M.S.; AKHLAGHI M.

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Journal: Journal of Animal Research Year:2015 | Volume:28 | Issue:2 Page(s): 146-153

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Title

The effect of levothyroxine sodium hormone on percentage of hatching, survival rate, and the early growth stage of rainbow trout (Oncorhynchus mykiss )

Author(s)

AKBARY P. | FEREIDOUNI M.S. | AKHLAGHI M. | Issue Writer Certificate

Keywords

levothyroxine sodiumQ2

Oncorhynchus mykissQ2

percentage hatchingQ2

percentage survivalQ2

Abstract

levothyroxine sodium hormone has a special relationship with early stages of growth, development and survival fish larvae. The present study aimed to investigate the effect of levothyroxine sodium hormone on percentage of hatching, survival rate and the early growth stage of rainbow trout (Oncorhynchus mykiss). This study was carried out in Dalkhan propagation and cultivation farm, Sepidan, Shiraz. In order to find out the way of fertilized eggs, they were bathed in levothyroxine sodium with concentrations of 0, 0. 1, 0. 5 and 1. 0 mg/L (each one, triplicates) for six hours. Then they were transferred into troughf trays with running water. After hatching all larvae were placed in mentioned levothyroxine sodium concentration bath for another six hours into troughfs (without tray). Larvae stayed in troughfs until the yolk-sac was observed. Finally, live rainbow trout larvae were counted in seprated plates. Results of present study indicated that the highest ratio of hatched eggs (81. 42%± 1. 04) and survival larvae after the yolk – sac were observed (72. 90%± 0. 75) in 0. 5 mg/L of levothyroxine sodium concentration (P<0. 05). But the ratio of percentage of hatching and survival larvae in the early growth stage, in 0 and 1 mg/L of levothyroxine sodium concentration, didn't indicate significant difference (P>0. 05). This suggests that levothyroxine sodium can increase the percentage of hatching and survival of larvae.

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APA: Copy

AKBARY, P., FEREIDOUNI, M.S., & AKHLAGHI, M.. (2015). The effect of levothyroxine sodium hormone on percentage of hatching, survival rate, and the early growth stage of rainbow trout (Oncorhynchus mykiss ). JOURNAL OF ANIMAL RESEARCH (IRANIAN JOURNAL OF BIOLOGY), 28(2 ), 146-153. SID. https://sid.ir/paper/248786/en

Vancouver: Copy

AKBARY P., FEREIDOUNI M.S., AKHLAGHI M.. The effect of levothyroxine sodium hormone on percentage of hatching, survival rate, and the early growth stage of rainbow trout (Oncorhynchus mykiss ). JOURNAL OF ANIMAL RESEARCH (IRANIAN JOURNAL OF BIOLOGY)[Internet]. 2015;28(2 ):146-153. Available from: https://sid.ir/paper/248786/en

IEEE: Copy

P. AKBARY, M.S. FEREIDOUNI, and M. AKHLAGHI, “The effect of levothyroxine sodium hormone on percentage of hatching, survival rate, and the early growth stage of rainbow trout (Oncorhynchus mykiss ),” JOURNAL OF ANIMAL RESEARCH (IRANIAN JOURNAL OF BIOLOGY), vol. 28, no. 2 , pp. 146–153, 2015, [Online]. Available: https://sid.ir/paper/248786/en

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