PROCEEDINGS OF THE FIFTY-THIRD WESTERN POULTRY DISEASE CONFERENCE March 7-9, 2004 Sacramento, California WPDC SPECIAL RECOGNITION AWARD G. YAN GHAZIKHANIAN The Western Poultry Disease Conference is proud to present the 2004 WPDC Special Recognition Award to Dr. G. Yan Ghazikhanian. Galestan Yan Ghazikhanian was born in 1937 in Iran. He obtained his DVM from the University of Tehran, Iran, and was presented the Silver Coin Education Medallion by the Shah of Iran for being the top ranked veterinary graduate. He received his MS and PhD in Comparative Pathology from the University of California, Davis. Under the tutelage of Dr. R. Yamamoto, Yan researched Mycoplasma meleagridis and M. synoviae in turkeys. After finishing his PhD, he worked at USDA APHIS as a director of a mobile laboratory in the 1971-72 eradication of velogenic viscerotropic Newcastle Disease in Southern California. Since 1974 he has worked at Nicholas Turkey Breeding Farms (NTBF), starting as a field and research veterinarian. Currently, Yan is Vice-President and Director of Veterinary Medicine for the company. To everyone at NTBF, he is simply known as Dr. Yan. In his 25 years with NTBF, Yan has established himself as an expert on the diseases and management of turkeys. Many consider him to be “The Man” on just about anything dealing with turkeys. A few of the many accomplishments Yan has made while at NTBF include the eradication of M. meleagridis, M. synoviae, and Salmonella arizonae infections from turkey primary breeding stock. In addition, he continues to research the turkey musculoskeletal system. Yan’s work at NTBF has significantly impacted the improvement of the health and the economic production of turkeys throughout the world. Yan travels a lot and has visited all the major turkey-producing companies in the USA. In fact, he has probably visited most of the turkey companies in Europe and the rest of the world. Yan served as one of the program chairmen for the first WPDC/ANECA joint meeting in 1980. The meeting was held in Acapulco, Mexico, and was a tremendous success and the beginning of a wonderful relationship with ANECA and future joint meetings. In 2001, Yan received the Golden Rooster Award in recognition as the Person of the Year from the California Poultry Federation. In 2002, Yan was recognized by the AAAP with the C.A. Bottorff Award for his significant contributions to the poultry health program in North America. Yan and his wife Cheryl, have two children, Jenia and Stefan. Last year, Yan became a grandfather. Yan has told us that he plans to retire this year. But we hope it won’t be the last we see of him. He is highly respected and sought out for advice by his colleagues, peers and students. He has been an invaluable reference to the western region and the entire poultry industry. ii SPECIAL ACKNOWLEDGMENTS The Western Poultry Disease Conference (WPDC) is honored to acknowledge the many contributions to the Conference. The financial contributions provide support for outstanding participants and to help pay for some of the costs of the Conference. Almost 40 organizations, companies and individuals have given substantial financial support. Many companies and organizations, including some that also contribute financially, send speakers at no expense to the Conference. We thank all these people, and acknowledge their support and contribution. We are extremely pleased to acknowledge two contributors at the Benefactor level. They are the American Association of Avian Pathologists and Merial Select, Inc. Once again, our distinguished Patrons, Donors, Sustaining Members, and Friends of the Conference are listed on the following pages. We greatly appreciate their generosity and say thanks to them and their representatives. Dr. Joan Jeffrey Schrader would like to express her thanks to Rhonda Roche of the UC-Davis Veterinary Medicine Teaching and Research Center for her invaluable secretarial assistance with the program, Richard Chin for his vigilance and consistent helpfulness, Dave Frame for his philosophy and experience. Many have provided special services that contribute to the continued success of this conference. The WPDC would like to thank Helen Moriyama, Rebecca Gonzales and Courtney Hufnagle, of the Fresno branch of the California Animal Health and Food Safety Laboratory System, for their secretarial support. For this year’s meeting, the WPDC has contracted Conference & Event Services, of the University of California, Davis, for providing registration and budgetary support for the conference. We would like to thank Teresa Brown and Jennifer Thayer for their work with our conference. We thank Dr. David Frame for editing and producing another outstanding Proceedings of this meeting. Dr. Frame is indebted to Ms. Sherry Nielson, Senior Secretary of The Utah State University Turkey Research Center, for her wise suggestions, hours of proofreading, and formatting the Proceedings for publication. We express our gratitude to all authors who submitted manuscripts – especially those who followed the instructions and submitted their papers on time! We again acknowledge and thank Ominpress (Madison, WI) for the handling and printing of this year’s Proceedings, and to Microsearch Corporation (Saugus, MA) for their creation of the CD-ROM for this year’s meeting. Once again, we acknowledge Bruce Patrick (Graphic Communications, Brigham Young University) for the cover design, and to Dr. Rocio Crespo for designing the CD cover and label. iii 2004 BENEFACTORS American Association of Avian Pathologists Athens, GA Merial Select, Inc. Gainesville, GA 2004 PATRONS Cobb-Vantress Siloam Springs, AR IDEXX Labs, Inc. Westbrook, ME Intervet Boxmeer, The Netherlands Lohman Animal Health International Gainesville, GA Synbiotics Corporation San Diego, CA 2004 DONORS Alltech Biotechnology Centre, Inc. Foster Poultry Farms, Inc. Guelph, ON, Canada Livingston, CA Alpharma, Inc. Hubbard/B.U.T.A. Salisbury, MD Gainesville, GA Bayer Animal Health Hy-Line International Shawnee Mission, KS Dallas Center, IA Charles River SPAFAS, Inc. Novus International, Inc. Storrs, CT St. Charles, MO Cutler Associates Perdue Farms, Inc. Moorpark, CA Salisbury, MD Elanco / Eli Lilly and Company Sunrise Farms Indianapolis, IN Catskill, NY Fort Dodge Animal Health Veterinary Service, Inc. Overland Park, KS Salida, CA iv 2004 SUSTAINING MEMBERS Aviagen North America Moroni Feed Company, Inc. Huntsville, AL Moroni, UT Embrex, Inc. Nicholas Turkey Breeding Farms, Inc. Research Triangle Park, NC Sonoma, CA Gemperle Enterprises Orlopp Turkey Breeding Farms Turlock, CA Orosi, CA Marion Hammarlund, DVM Walco International, Inc. Riverside CA Ceres, CA ISA Breeders, Inc. Ithaca, NY 2004 FRIENDS OF THE CONFERENCE Agri Stats, Inc. Lasher Associates, Inc. Fort Wayne, IN Millsboro, DE California Poultry Federation, Inc. Bryan Mayeda, DVM Modesto, CA Sacramento, CA Consortium of California Poultry Extension J. S. West Milling Company Veterinarians Modesto, CA Davis, CA Demler Enterprises Wasco, CA v 53rd WESTERN POULTRY DISEASE CONFERENCE OFFICERS PRESIDENT SECRETARY-TREASURER Dr. David Willoughby Dr. Richard P. Chin California Department of Food & Ag California Animal Health & Food Safety 3800 Cornucopia Way, Suite F Laboratory System - Fresno Modesto, CA 95350 2789 S. Orange Ave. Fresno, CA 93725 PROGRAM CHAIR Dr. Joan Jeffrey Schrader CONTRIBUTIONS CHAIR Schering-Plough Corporation Dr. Ken Takeshita Lincoln, NE Western Poultry Disease Conference [email protected] PROGRAM CHAIR-ELECT Dr. Stewart Ritchie LOCAL ARRANGEMENTS CHAIR Canadian Poultry Consultants Ltd. Dr. Carol Cardona 30325 Canary Court School of Veterinary Medicine Abbotsford, BC V4X2N4 University of California, Davis Canada 1 Shields Ave Davis, CA 95616 PROCEEDINGS EDITOR Dr. David Frame Utah State University Cooperative Extension USU Turkey Research Center 325 West 100 North Ephraim, UT 84627 The Proceedings of the 53rd Western Poultry Disease Conference are not refereed, but are presented as a service and a source of information to those attending the conference and to others who wish to gain some insight as to the information presented. Copies of the Proceedings are available in either hardcopy or electronic (CD) formats. Copies of these Proceedings are available from: Dr. R. P. Chin CAHFS-Fresno University of California, Davis 2789 S. Orange Ave. Fresno, CA 93725 [email protected] Price per copy (includes shipping & handling): US$18.00 for USA shipment. US$15.00 for AAAP members and orders of 5 or more for USA. US$19.00 for Canada and Mexico. US$24.00 for all other countries. Make checks payable to: UC Regents Still available… 50th WPDC Anniversary CD-ROM. Copies can be purchased from the AAAP. Phone: 706-542-5645. Fax: 706-542-0249. E-mail: [email protected]. Web: http://www.aaap.info/ vi WESTERN POULTRY DISEASE CONFERENCE (WPDC) HISTORY PRESIDENT PROGRAM CHAIR DEDICATION RECOGNITION 1st WPDC – 1952 A. S. Rosenwald 2nd WPDC – 1953 P. D. DeLay A. S. Rosenwald 3rd WPDC – 1954 C. M. Hamilton Kermit Schaaf 4th WPDC – 1955 E. M. Dickinson W. H. Armstrong 5th WPDC – 1956 D. E. Stover E. E. Jones 6th WPDC – 1957 D. V. Zander H. E. Adler 7th WPDC – 1958 H. E. Adler E. E. Jones 8th WPDC – 1959 R. D. Conrad L. G. Raggi 9th WPDC – 1960 L. G. Raggi A. S. Rosenwald 10th WPDC – 1961 A. S. Rosenwald D. V. Zander 11th WPDC – 1962 D. V. Zander R. V. Lewis 12th WPDC – 1963 R. V. Lewis Walter H. Hughes 13th WPDC – 1964 W. H. Hughes Bryan Mayeda 14th WPDC – 1965 B. Mayeda R. Yamamoto 15th WPDC – 1966 R. Yamamoto David S. Clark 1st sign of Contributors 16th WPDC – 1967 D. S. Clark Roscoe Balch 17th WPDC – 1968 R. Balch Richard McCapes 18th WPDC – 1969 R. McCapes Dean C. Young 19th WPDC – 1970 D. C. Young W. J. Mathey 4th Poultry Health Sym. (PHS) 1st combined WPDC & PHS, 1st listing of distinguished members 20th WPDC – 1971 W. J. Mathey Ramsay Burdett 5th PHS 21st WPDC – 1972 R. Burdett Marion Hammarlund 6th PHS 22nd WPDC – 1973 M. Hammerlund G. W. Peterson 7th PHS 23rd WPDC – 1974 G.