ISSN:
1432-136X
Keywords:
Fasting
;
Refeeding
;
Oxygen consumption
;
Protein synthesis
;
Cod, Gadus morhua
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary Rates of protein synthesis and oxygen consumption ( $$\dot M$$ O2) in cod were compared in both fasted and refed animals. During a 14-day fast both protein synthesis and respiration rates fell to stable values after 6 days. When a meal of whole sandeel at 6% body weight was fed to fish fasted for 6 days, protein synthesis and ( $$\dot M$$ O2) increased to a maximum at between 12 and 18 h after feeding. Peak ( $$\dot M$$ O2) was about twice the pre-feeding values, while whole animal protein synthesis increased four-fold. There were differences between tissues in the timing of maximum protein synthesis; the liver and stomach responded faster than the remainder of the body. Maximum protein synthesis rates in the liver and stomach occurred at 6 h after feeding, at which time their calculated contribution to total ( $$\dot M$$ O2) was 11%. Similar calculations suggested that the integrated increment in whole animal protein synthesis contributed between 23% and 44% of the post-prandial increase in ( $$\dot M$$ O2). It was concluded that protein synthesis is an important contributor to increased ( $$\dot M$$ O2) after feeding in cod.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00357525
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