Abstract
MANNING et al. 1 have discussed the applicability of the glucostatic theory of Mayer et al. 2 to the regulation of food intake in sheep. Glucose in ruminant animals plays a relatively minor part in energy metabolism, since a major portion of ingested carbohydrates are degraded to volatile fatty acids which are absorbed into the blood stream via the rumen wall3. Consequently, a chemoreceptor mechanism of regulation of intake in ruminants may depend on any of several metabolites. The objective of this experiment was to examine several major intermediate metabolites for their effect on appetite.
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References
Manning, R., Alexander, G. I., Krueger, H. M., and Bogart, R., Amer. J. Vet. Res., 20, 242 (1959).
Mayer, J., and Bates, M. W., Amer. J. Physiol., 168, 812 (1952).
Barcroft, J., McAnally, R. A., and Phillipson, A. T., J. Exp. Biol., 20, 120 (1944).
National Research Council Publication 464 (1956) gives daily maintenance requirement of a 1,000-lb. cow as 14.1 therms of digestible energy; adjustments for variation in body-weight were proportional to 0.75 log body-weight.
Vallance, W. S., and McClymont, G. L., Nature, 183, 446 (1959).
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DOWDEN, D., JACOBSON, D. Inhibition of Appetite in Dairy Cattle by Certain Intermediate Metabolites. Nature 188, 148–149 (1960). https://doi.org/10.1038/188148a0
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DOI: https://doi.org/10.1038/188148a0
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