Lien, R., Hess, J., Giesen, A., & Yersin, A. (2003). Influence of 2-hydroxy-4-(Methylthio)butanoic Acid on Early Egg and Chick Weights of Broiler Breeders. International Journal of Poultry Science, 2(6), 430–437. https://doi.org/10.3923/ijps.2003.430.437