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Dr. Sam Leadley

Subject Expert for: 
Calf and Heifer Management

Dr. Sam Leadley, Ph.D., P.A.S.
Calf and Heifer Management Specialist, Attica Veterinary Associates

Dr. Sam Leadley


Area of Expertise
Sam Leadley is the calf and heifer management specialist for Attica Veterinary Associates, Attica, NY, a practice devoted solely to bovine care. He consults with dairy farmers and heifer growers with the goal of improving the profitability of raising healthier, faster-growing animals through better management practices. Dr. Leadley is an active member of the Dairy Calf and Heifer Association. Working with the veterinary clinic laboratory, he runs a Colostrum Quality Control Program for dairies committed to HAACP procedures. He also lectures and teaches classes primarily in the northeastern and midwestern United States. He has made invited presentations at conferences in the United States and internationally.


Dr. Leadley writes Calving Ease, a free monthly newsletter that is distributed internationally ( and “Calf Connection,” a column in the Eastern Dairy Business magazine. He created and maintains a dairy website for the veterinary clinic,, including his "Calf Facts" and “Calf Skills” resource libraries. Dr. Leadley, in cooperation with Dr. Steve Mason, created a CD entitled “Calf Manager” as a resource for learning to successfully raise young dairy calves. Greg Coffta produced a Spanish edition of the CD (


For twelve years before joining the veterinary practice in 2000, Dr. Leadley managed the calf and heifer enterprise on a 1200-cow dairy in western New York State. He has been an on-site manager of on-farm research trials for feed and pharmaceutical companies.


Academic Training

PhD 1967 Cornell University Rural Sociology
MS 1964 Cornell University Rural Sociology
BS 1957 Cornell University Agricultural Education

Professional Experience

2000 - Present Calf and Heifer Management Specialist, Attica Veterinary Associates
1988 – 1999 Calf and Heifer Enterprise Manager, Noblehurst Farms
1967 – 1982 Associate Professor, Pennsylvania State University
1964 – 1967 Extension Associate, Cornell University



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