Embryonic exposure to corticosterone modifies the Chicks Aggressive Behavior Mediated by Serotogenic System

Expoure to maternal derived glucocorticoid during embryonic development influences offspring phenotypic and behavior.Corticosterone is thought to affects chicks behaviors including begging and aggressive behviors.Serotonin(5-HT)regulates aggressive behavior via binding to its receptors such as 5-HT1A and 5-HT1B.It has been reported that the aggressive behavior is associated with

Differences in egg deposition of corticosterone and embryonic expression of corticosterone metabolic enzymes between slow and fast growing broiler chickens

Glucocorticoids(GCs)is vital for embryonic development and their bioactivity is regulated by the intracellular metabolism involving 11β-hydroxysteroid dehydrogenases(11β-HSDs)and20-hydroxysteroid dehydrogenase(20HSD).Here we sought to reveal the differences in egg deposition of corticosterone and embryonic expression of corticosterone metabolic enzymes between slow and fast growing broiler chickens.Eggs of fast-growing breed contained significantly higher(P【0.05)