The Pennsylvania State University The Graduate School Department of Dairy and Animal Science HEAT TREATMENT OF BOVINE COLOSTRUM: EFFECTS ON PHYSICAL AND CHEMICAL PROPERTIES AND ON NEONATAL BLOOD AND GROWTH PARAMETERS A Dissertation in Animal Science by Jorge Alberto Elizondo Salazar © 2008 Jorge Alberto Elizondo Salazar Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy August 2008