William (“Bill”) Victor Chalupa, professor emeritus of nutrition at Penn Vet, died at Paoli Memorial Hospital in Pennsylvania on January 25. He was 78 years old.
Dr. Chalupa was born in New York City and graduated from Frenchtown High School in New Jersey. He earned his BS, MS and PhD in ruminant nutrition from the College of Agriculture at Rutgers University.
His first faculty position was in the dairy science department at Clemson University in South Carolina. He took a sabbatical leave to perform research at the USDA Ruminant Laboratory in Beltsville, Maryland, then joined Smith-Kline Pharmaceutical as manager of rumen metabolic research at the Applebrook facility in West Chester, Pennsylvania. He also taught briefly at the University of Maryland.
In 1976, Dr. Chalupa came to the University of Pennsylvania School of Veterinary Medicine as an adjunct associate professor in the Section of Nutrition, where he researched animal health and production and delivery of current nutritional concepts to nutritionists and producers through development of ration formulation software. He conducted research at New Bolton Center and taught in Philadelphia.
In 1981, he was promoted to professor of nutrition. He retired from Penn in 2005 after 30 years of service.
Dr. Chalupa made important contributions in ruminant nutrition in the areas of nitrogen metabolism, the influence of ionophores on rumen fermentation, use of by-pass fats in ruminant diets, and production responses to bovine somatotropin. He was an early proponent of the application of more dynamic ration formulation programs to account for rumen fermentation of feedstuffs. He was instrumental in taking concepts in the Cornell Net Carbohydrate Protein System and developing a usable ration formulation program for use in the field, CPMDairy. With his collaborators, he moved ration formulation programs from static models to more dynamic models.
He devoted time and energy to training nutritionists worldwide in these concepts. One of his major contributions is the growth of dynamic ration models that are used today in the field.
In May 2003, he received the George Hammell Cook Distinguished Alumni Award of Rutgers University. In July 2007, he was recognized by the Dairy Nutritionists of Mexico for his outstanding contribution to dairy nutrition. He was a founding board member of the Nature Center of Charlestown, Chester County, Pennsylvania.
Dr. Chalupa is survived by his wife, Barbara Fritsche Chalupa; his brother, James (Sheri Bowlby Chalupa); his daughter, Judy Chalupa Rossetti (Michael Rossetti); his son, Chip (Sondra Swisher Chalupa); and five grandchildren, Angela Rossetti, Christopher Rossetti, Samantha, Kirstin and Matthew Chalupa.