Dr Karreman is a 1995 graduate of the University of Pennsylvania, School of Veterinary Medicine. He is a dairy practitioner in Lancaster County, PA. With his wife Becky, they run Penn Dutch Cow Care, a practice dedicated to working with dairy farmers who are ecologically motivated and who prefer natural treatments for their cows. He is a member of the American Veterinary Medical Association, the American Holistic Veterinary Medical Association, the American Association of Bovine Practitioners, Pennsylvania Certified Organic, and the Veterinary Botanical Medicine Association. He earned a bachelor's degree from the University of New Hampshire in 1984, with majors in Soil Science and Resource Economics.

Dr. Karreman is a nationally recognized expert in organic dairy health care. He is a clinical practitioner who works with 85 certified organic and transitioning herds in Lancaster County, PA. He is a much sought after speaker and during the last year has been an invited speaker at the annual meetings of the AVMA, AHVMA and the New York State Veterinary Medical Society as well as the spring clinics of the Maine Veterinary Medical Association and the Veterinary Botanical Medical Association; he also has given scores of talks to farmers across the country, sponsored by the various northeast Natural Organic Farmers Associations, Horizon Organic Dairy, Dairy Marketing Services, Clover Stornetta Dairy and Humboldt Creamery, among others. He has authored a book called Treating Dairy Cows Naturally: Thoughts and Strategies (currently being re-published by Acres, USA) as well as contributed chapters to Global Development of Organic Agriculture (Cabi Publishing, 2006), Alternative Health Practices for Livestock (Blackwell, 2006), Veterinary Herbal Medicine (Mosby, 2006) and Current Veterinary Therapy, Food Animal Practice (Pharmacology & Therapeutics) (in press).

In 1999, he was nominated by the AABP and subsequently appointed to the AVMA Task Force on Complementary and Alternative Veterinary Medicine. In 2005, Dr. Karreman was appointed by USDA Secretary Veneman to a 5 year appointment on the National Organic Standards Board and in 2007 became Chair of the Livestock Committee.

Dr Karreman's experience in agriculture currently spans 20 years and encompasses soil science, soil conservation, cropping, and management intensive grazing while being a herdsman for six years on farms in Pennsylvania, New Hampshire and The Netherlands. His interest in complementary and alternative treatments stems from his tenure as herdsman on Seven Stars Farm, a Biodynamic farm in Kimberton, PA. During a six-month stretch of using only natural treatments on the milking herd, he realized that going to school to learn conventional veterinary medicine would better prepare him to work with all kinds of therapies in dairy cows.

His published papers include:

• Karreman HJ (2003). Can Cows on Organic Dairy Farms Compete? Hoard's Dairyman, July 2003.
• Karreman HJ (2002). Issues Affecting Veterinarians Who Work With Certified Organic Livestock. J Amer Holistic Vet Med Assoc, 20 (4): 11-15.
• Karreman HJ (2002). Snapshot of a Holistic Dairy Practice. J Amer Holistic Vet Med Assoc, 20(4): 25-31.
• Karreman (2001). Macroscopic Aspects of Dairy Farm Health. Biodynamics, March/April 2001, No. 234: 3-8.
• Karreman, Wentink, Wensing (2000). Using Serum Amyloid A to Screen Dairy Cows for Sub-clinical Inflammation. Veterinary Quarterly, 22: 175-8.
• Graczyk, Evans, Shiff, Karreman, Patz (2000). Environmental and Geographical Factors Contributing to Watershed Contamination with Cryptosporidium parvum oocysts. Environmental Research, 82: 263-271.

Dr Karreman has given many slide presentations to farmers, veterinarians, veterinary students and others interested in livestock issues concerned with reducing reliance on synthetic compounds, as well as health issues of cattle related to the wise stewardship of farmland resources. He has helped develop livestock health and environmental standards for use in certifying organic farms for Pennsylvania Certified Organic. He has been on the Advisory Council and Review Panel of the Organic Materials Review Institute (OMRI), to review technical information on livestock health products for potential use in the USDA National Organic Program. He was nominated by the AABP, and subsequently selected by the AVMA, to represent the Food Animal sector of veterinary medicine while sitting on the Task Force for Complementary and Alternative Veterinary Medicine.

Dr Karreman is interested in all types of treatments for dairy cows and always likes to learn from others what works consistently well for them. In addition to his daily practice and emergency calls, he likes to volunteer with Lancaster County's USDA Pequea-Mill Creek Project. Gathering with small groups of interested farmers, he enjoys teaching and discussing real life issues regarding water quality, manure management, streambank fencing, and barnyard run-off in relation to dairy cow health.