Effect of two types of feed restriction, intermittent total starvation or intermittent protein starvation, on growth, lipogenesis, and fatty acid composition of liver and adipose tissues in chicks

Simon, J.; Brisson, G.J.

Canadian Journal of Physiology and Pharmacology 50(7): 634-644


ISSN/ISBN: 0008-4212
PMID: 5050601
DOI: 10.1139/y72-094
Accession: 000076899

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For 40 days 72 Arbor Acres chickens 4 weeks old were given a balanced diet to appetite, the balanced diet for one day and deprived of food on the next alternately throughout the period, deprived of food for 2 days and given the balanced diet for the next 4 days throughout, or given a protein-free diet one day and the balanced diet the next throughout. Growth rate for all the experimental groups was less than for the controls although all the deprived chickens developed hyperphagia. Fat deposition, as estimated by weight of abdominal tissue, was significantly more in those restricted in protein on alternate days than in all other groups. When liver slices and subcutaneous abdominal fat were incubated in a medium containing sodium acetate-1-14C lipogenesis in adipose tissue was not influenced by the types of food restriction studied but liver lipogenesis was increased by both types of restriction and especially by intermittent total deprivation. In liver and fat of all restricted chickens oleic acid rose and linoleic acid fell.