Predicting Pregnancy Status and Fetal Number in Time-Dated Pregnant Ewes Using Serum Progesterone and Ultrasound

K. See, A.J. Bailer, E.J. Behnke, R.S. Baker, K.E. Clark and P.T. Russell

Research Journal of Animal Sciences 1 ( 2 ): 65 - 71 , 2007