Performance of rainbow trout (Oncorhynchus mykiss) fingerlings fed diets containing different levels of faba bean (Vicia faba) meal

Aquaculture ◽  
2013 ◽  
Vol 416-417 ◽  
pp. 161-165 ◽  
Author(s):  
Hossein Ouraji ◽  
Amine Zaretabar ◽  
Hossein Rahmani
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Vicia Faba ◽  
Faba Bean ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Different Levels

Effects of stress on plasma homeostasis, endolymph chemistry, and check formation during otolith growth in rainbow trout (Oncorhynchus mykiss)

2004 ◽  
Vol 61 (7) ◽  
pp. 1247-1255 ◽  
Author(s):  
P Payan ◽  
H De Pontual ◽  
A Edeyer ◽  
G Borelli ◽  
G Boeuf ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Plasma Concentrations ◽  
Growth Stress ◽  
Significant Rise ◽  
External Stress ◽  
Otolith Growth ◽  
Ph Variation ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Different Levels

This is the first study in which the effects of an external stress were analysed at different levels: plasma ho meostasis, endolymph chemistry, and otolith growth. Stress was applied to rainbow trout (Oncorhynchus mykiss) by exposure to Cl2 gas. In the plasma of Cl2-stressed trout, Na+ and Cl– decreased (70 mmol·L–1) and K+ increased (2.0 mmol·L–1), whereas total Ca was unchanged. A slight hypercapny (+2.4 mmHg (1 mmHg = 133.322 Pa)) was observed related to a significant rise (40%) in total CO2 without pH variation. In the endolymph, Na+ and Cl– also decreased, whereas other parameters (K+, PO43–, Mg, and, peculiarly, total Ca) remained stable. The important effect provoked by Cl2 stress in endolymph was an increase of proteins (factor of 2.6) and total CO2 (factor of 3.1) concentrations at the proximal side of the endolymph. The stress induced a decrease in otolith growth rate and produced a discontinuity (check) in the microstructure pattern of the otolith characterized by a large D zone. The variations in the endolymph composition are discussed and we propose that they result not only from changes in plasma concentrations, but also from changes (organic and crystallization) in otolith deposition.

Immune response of SAV-1 challenged rainbow trout (Oncorhynchus mykiss) fed with diets containing different levels of n-3 PUFA

2013 ◽  
Vol 34 (6) ◽  
pp. 1720-1721
Author(s):  
B. Lopez-Jimena ◽  
P. Lyons ◽  
T. Herath ◽  
R.H. Richards ◽  
J. Walton ◽  
...  
Keyword(s):  
Immune Response ◽  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Different Levels
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