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Some regulatory aspects of thermogenesis in cold-exposed piglets.

作者信息

Herpin P, Bertin R, Le Dividich J, Portet R

出版信息

Comp Biochem Physiol A Comp Physiol. 1987;87(4):1073-81. doi: 10.1016/0300-9629(87)90042-9.

DOI:10.1016/0300-9629(87)90042-9
PMID:2887373
Abstract
  1. Thermoregulatory mechanisms were studied in weaned piglets fed ad libitum for 3 weeks at 12 or 23 degrees C. 2. Cold-adapted pigs maintained a growth rate and a carcass composition similar to the control ones, while increasing food intake by 20% (P less than 0.05). 3. Lipoprotein lipase activity was increased (P less than 0.05) by cold exposure in white adipose tissue (WAT) and heart. A large enhancement of lipogenesis was observed in WAT and to a lesser extent in the liver while WAT composition did not change significantly in the cold. 4. Cytochrome oxydase activity was increased in liver (30%), perirenal fat (40%) and interscapular muscle (75%) of cold-exposed pigs. 5. Plasma levels of thyroid hormones (TSH, T3, T4) were increased in the cold. 6. Mechanisms and locations of heat production are discussed.
摘要

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