Effect of short‐term (0–72 h) fasting on serum biochemical characteristics in rainbow trout Oncorhynchus mykiss

An experiment was carried out to investigate the effects of short‐term fasting periods on the serum biochemical characteristics of rainbow trout, Oncorhynchus mykiss. For this purpose, fish were fasted 0, 6, 12, 24, 48 and 72 h before blood sampling. Thereafter the serum levels of thyroxine (T₄), 3,...

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Bibliographic Details
Published in:	Journal of applied ichthyology Vol. 30; no. 3; pp. 569 - 573
Main Authors:	Hoseini, S. M, Yousefi, M, Rajabiesterabadi, H, Paktinat, M
Format:	Journal Article
Language:	English
Published:	Berlin Blackwell Wissenschafts-Verlag 01-06-2014 Blackwell Publishing Ltd Wiley Subscription Services, Inc
Subjects:	albumins blood proteins blood sampling cholesterol cortisol fasting fish Freshwater glucose Oncorhynchus mykiss thyroxine Iran
Online Access:	Get full text
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Summary:	An experiment was carried out to investigate the effects of short‐term fasting periods on the serum biochemical characteristics of rainbow trout, Oncorhynchus mykiss. For this purpose, fish were fasted 0, 6, 12, 24, 48 and 72 h before blood sampling. Thereafter the serum levels of thyroxine (T₄), 3,5,3′‐triiodothyronine (T₃), cortisol, glucose, lactate, triglyceride, cholesterol, total protein, albumin, globulin and albumin : globulin ration (A : G) were determined. Results show that serum levels of T₄ (4.60–8.77 ng ml⁻¹), T₃ (7.50–13.3 ng ml⁻¹), cortisol (7.91–24.5 ng ml⁻¹), glucose (18.5–80.1 mg dl⁻¹), lactate (12.7–29.6 mg dl⁻¹), triglyceride (171–500 mg dl⁻¹), and cholesterol (321–535 mg dl⁻¹) were significantly affected by the fasting period. However, there were no significant changes in serum total protein (3.03–3.68 g dl⁻¹), albumin (1.78–2.01 g dl⁻¹), globulin (1.15–1.70 g dl⁻¹) or A : G (1.13–1.93) among the fish fasted 0–72 h. Results clearly show the importance of a fasting period on the serum biochemical properties of rainbow trout. According to the results, 24 h fasting is suggested as a pre‐sampling fasting period in rainbow trout to measure serum levels of T₄, T₃, cortisol, glucose, lactate, triglyceride, and cholesterol. Potential mechanisms related to the changes in biochemical properties are discussed.
Bibliography:	http://dx.doi.org/10.1111/jai.12221 ArticleID:JAI12221 istex:A1E06672E2004CA6F8F23CFB262B01924262BC7C ark:/67375/WNG-S9SZ3DD5-P ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0175-8659 1439-0426
DOI:	10.1111/jai.12221