אסיף מאגר המחקר החקלאי

Glucose kinetics and respiratory metabolism in fed and fasted chickens

Year:

1981

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Authors :

Volume :

70

Co-Authors:

Riesenfeld, G., Institute of Animal Science, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Herman, A., Institute of Animal Science, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Hurwitz, S., Institute of Animal Science, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel

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Abstract:

1. 1. Glucose replacement rate, recycling and oxidation rates, as well as respiratory metabolism, were studied in unanaesthetized chickens which were fed or fasted, 0, 24 and 72 hr. (U[14C], 6[3H]) glucose was used for glucose kinetics study while oxygen consumption (VO2) and CO2 production (VCO2) were determined simultaneously in an open circuit system. 2. 2. Glucose apparent replacement rate decreased during fasting from 17 to 9 mg/min/kg while glucose recycling did not change significantly. 3. 3. The net conversion of glucose carbon to expired CO2 decreased from 2.1 to 0.89 mg/min/kg during the first 24 hr of fasting. Glucose oxidation contributed 31 and 12% of the total heat production (M) in fed and fasted chickens respectively. 4. 4. The relations between glucose homeostasis and heat production in the chicken are discussed. © 1981.

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