Effects of posthatch feed deprivation on residual yolk absorption, macronutrients synthesis and organ development in broiler chicks

ABSTRACT The aim of the research was to evaluate the dynamic changes of early posthatch starvation on residual yolk absorption, synthesis of macronutrients (protein, lipid and glycogen), and organ development in broiler chicks. A total of 720 1-d-old chicks (Lingnan Yellow) were randomly assigned to three treatments: group A (non-fasted), group B (fasting for 24 hours after placement) and group C (fasting for 48 hours after placement). The trial lasted for 168 hours and water ad libitum all the time. Sampling was performed at 0, 24, 48, 72, 120 and 168 h. Non-fast (Group A) promoted (P