V. Ravindran, W.H. Hendriks, D.V. Thomas, P.C.H. Morel and C.A. Butts
International Journal of Poultry Science 4 ( 4 ): 192 - 196 , 2005
C. L. Nalle, V. Ravindran and G. Ravindran
International Journal of Poultry Science 9 ( 6 ): 567 - 573 , 2010