V.L. Christensen, M.J. Wineland, I. Yildirum, D.T. Ort and K.M. Mann
International Journal of Poultry Science 3 ( 6 ): 378 - 385 , 2004
V.L. Christensen, M.J. Wineland, I. Yildirum, B.D. Fairchild, D.T. Ort and K.M. Mann
International Journal of Poultry Science 4 ( 5 ): 268 - 273 , 2005