S. Roth

Characterization of image and labor requirements for positive pregnancy diagnosis in swine using two methods of real-time ultrasound

S. Rodriguez-Zas, R. Knox, S. Breen, 2003 .

Effect of housing system and boar exposure on estrus expression in weaned sows.

S. Rodriguez-Zas, R. Knox, S. Breen, 2004, Journal of animal science.

Use and accuracy of instruments to estimate sperm concentration : Pros , Cons & Economics

S. Rodriguez-Zas, R. Knox, S. Roth, 2003 .