Williams, M.A., Lallo, C.H. and Palmer, D. (2020) “Effect of Early Post-Hatch Feeding on Yolk Sac Disappearance, Feed Intake and Weight of Newly Hatched Mule Ducklings in a Tropical Environment”, Pakistan Journal of Nutrition, 19(2), pp. 74–79. doi:10.3923/pjn.2020.74.79.