M. Sato , Y. Tsuneyoshi , K. Sato , M. Furuse , Comparison of 3-Hydroxyacyl CoA Dehydrogenase Activity Between Broiler and Layer Chickens During Embryonic Development, Research Journal of Biological Sciences, Volume 4,Issue 5, 2009, Pages 585-587, ISSN 1815-8846, rjbsci.2009.585.587, (https://makhillpublications.co/view-article.php?doi=rjbsci.2009.585.587) Abstract: The activity of 3-Hydroxyacyl CoA Dehydrogenase (3-HADH), rate limiting enzyme relating fatty acid oxidation, in broiler and layer embryos was compared, because their growth and lipid metabolism are largely different during embryogenesis. The 3-HADH activity in the liver was constant from the embryonic stage to the hatch, but the activity was significantly higher in broilers than in layers. Keywords: Chicken;embryo;3-hydroxyacyl CoA dehydrogenase;broiler;layer;metabolism