Effects of food deprivation on 24 h-changes in brain and liver carbohydrate and ketone body metabolism of rainbow trout |
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Authors: | R. I. Figueroa,R. Rodrí guez-Sabarí s,M. Aldegunde, J. L. Soengas |
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Affiliation: | Laboratorio de Fisioloxía Animal, Facultade de Ciencias, Universidade de Vigo, E-36200 Vigo, Spain;Laboratorio de Fisioloxía Animal, Facultade de Bioloxía, Universidade de Santiago de Compostela, Spain |
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Abstract: | Plasma glucose, lactate and acetoacetate, brain glycogen and acetoacetate, and liver acetoacetate, glycogen and lactate in fed rainbow trout exhibited daily changes. However, no daily changes were observed in the activities of the brain enzymes glycogen synthetase, 6-phosphofructo 1-kinase, and lactate dehydrogenase. Depending on the length of the previous fasting period most daily changes observed in the metabolic parameters of fed fish disappeared, except for liver acetoacetate levels, which displayed daily changes in both fed and fasted fish. These results suggest that feeding is an important factor regulating most daily changes in the brain and liver carbohydrate and ketone body metabolism of rainbow trout. |
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Keywords: | rainbow trout daily changes brain food deprivation glucose ketone body |
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