Lipid biosynthesis and deposition in genetically lean and fat chickens. Comparative in vivo studies with 14C acetate

Following intravenous administration of 14C-acetate to genetically lean or fat chickens, the radioactivity in their liver, plasma, striated muscle and abdominal adipose tissue lipids and that in the breathed out CO2 were studied in function of time. As compared to the lean ones, the fat chickens showed a higher labelling of their triglyceride fatty acids in the plasma and adipose tissue, but not in the liver. Thus a higher rate of triglyceride secretion from the liver would be responsible for the higher abdominal fat weight in the fat line chickens.