Abstract: Lipogenesis plays a role in the maintenances of body composition in the growing animals. Lipogensis was regulated in the liver and adipose tissue by the composition of macronutrients in diet. High carbohydrates and little fat was elevated lipogenesis than rich fat and low carbohydrates. Serum samples were preferred because of cholesterol and triglyceride concentration is about 3-5% higher in serum than in EDTA plasma, although no significant serum plasma difference was observed for HDL. There are a variety of methods to measure the lipoprotein classes. All require separation of the classes before they can be measured and recently analysis was performed usingenzymatic kits. Hormonal regulation of lipogenesis has been investigated by measuring hormone levels in the blood as a function of dietary state and by ablating specific endocrine glands in the intact animals, following replacement therapy with specific hormone. Hormone identified in experiments with intact animals was then tested in cell culture systems. Similarly the effect of nutrition on lipoprotein metabolism was reviewed. In the species point of view, the turkey in contrast to chicken seems to be a bird in which muscle growth is more important than adipose tissue growth. This difference in rate of fat deposition in extra-hepatic tissue is due to inherited differences. On the other hands, atherosclerotic plaques were found more severe in the quail selected for high cholesterol than in that selected for low cholesterol.
H.H. Musa , G.H. Chen , J.H. Cheng , D.M. Mekki , S.H.Xu and J. Huang , 2006. Comparative Study of Lipoprotein Metabolism in Chicken, Turkey and Quail. Journal of Food Technology, 4: 122-127.