(Proceedings) - Champaign, Ill. : American Society of Animal Science, 1971 - 144 p. : ilus. - J. of Animal Sci. v.32, 1971. Sup. I . - J. of Animal Sci. v.32, 1971. Sup. I . LCCN: 16046 Subjects--Topical Terms: GanaderÃa--Congresos.Ganado--Reproducción.