Figure 3.

Effects of the ICV injection of control solution, CCk8s (Cholecystokinin fragment 26-33 amide, sulfated; 1 nmol), MK-801 (NMDA glutamate receptors antagonist; 15 nmol), and co-injection of the CCk8s+MK-801 on cumulative food intake (g/100g BW) in neonatal layer chicken. Data are expressed as mean±SEM. Different letters (a and b) indicate significant differences among treatments at each time (P<0.05).