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Michael L. O'Connor
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Michael L. O'Connor

  • Professor of Dairy Science
  • Undergraduate Adviser, Dairy and Physiology
315 Agricultural Sciences and Industries Building
University Park , PA 16802
Office Phone: (814) 863-3913

Education

  1. Ph.D., Animal Science, Virginia Polytechnic Institute, 1979
  2. M.S., Dairy Science, Virginia Polytechnic Institute, 1974
  3. B.S., Animal Science, University of Rhode Island, 1969

Specialty

Reproductive Management

Focus and Interests

Provide information, educational resources and programs in the area of dairy cattle reproductive management. Assist dairy producers, veterinarians, artificial insemination personnel and extension agent trouble-shooting herd reproductive problems.

Provide instruction to undergraduate students on topics related to reproductive management in Dairy Production.

Provide assistance to various dairy industry organizations.

Extension Activities

  • Produce educational materials on the topic of reproductive management.
  •   Conduct reproductive management workshops and seminars for dairy producers, AI   personnel and veterinarians.
  •   Provide in-service training for Extension professionals.
  •   Plan and conduct specific educational events for dairy youth.
  •   Coordinate planning of regional and state dairy management conferences.
  •   Coordinator of the Dairy and Livestock Extension within the Department of Dairy and Animal Science.
  •   Editor of Dairy Digest.

Professional Experience

  • U.S. Army Officer-Field Artillery 1969-1971
  • Penn State University Assistant Professor 1979-1985
  • Penn State University Associate Professor 1985-1991
  • Penn State University Professor, Dairy Science 1991-Present
  • Washington State University Sabbatical Leave 1994-1995

Teaching Experience - teach portions of the following courses

  • Animal Science 310 - Principles of Dairy Production
  • Animal Science 410 - Advanced Dairy Management
  • Animal Science 350 - Problem Solving In Dairy Management

Selected Publications

Extension Publications, Text Chapters, Educational Programs and Conference Proceedings

  • DHIA Record Analysis On-line Training Course 2005 : Co-instructor - developed section on reproductive management: www.onlinelearning.psu.edu/DHIA
  • Penn State Dairy Production Skills Certificate Program: coordinator for the Reproductive Management Module of this program.
  • Delahoy, J. and M.L. O'Connor - Feeding Fatty Acids for Improved Reproductive Performance Proceedings 7th Annual Mid Atlantic Regional Dairy Extension Inservice Training Program May 24-26, 2005. Wilkes-Barre, PA.
  • O'Connor, M.L. Special Circular - Reviewing Artificial Insemination Technique.
  • O'Connor, M.L. Special Circular - Heat Detection and Timing of Insemination for Cattle.
  • O'Connor, M.L. 1993. Proceedings Northeast Dairy Management Seminars: An Update on the Use of Hormones for the Postpartum Cow.
  • M.L. O'Connor. 1994. Proceedings National Reproduction Symposium: Alternative Methods for Determining Pregnancy Status in Cattle. pg.23-32, Pittsburgh, PA.
  • M.L. O'Connor. 1995. Proceedings 1995 Northwest Dairy Shortcourse: Basic and Futuristic Concepts in Reproductive Management of Dairy Cattle. pg.101 - 112. Lynwood, WA and Portland, OR
  • M.L. O'Connor. 1995. Proceedings Pennsylvania Dairy Symposium: Systematic Approaches to Reproductive Management and New Technologies. pg. 85 - 96. Hershey, PA.
  • M.L. O'Connor. 1995. Proceedings Pennsylvania Dairy Feed Industry Seminar: Nutritional Concerns for Optimal Reproduction.
  • M.L. O'Connor. 1995. Reference Textbook, Penn State Dairy Reference Manual. Chapter 7, Reproductive Management. pg.188 - 193.
  • M.L. O'Connor. 1996. Systems Approach to Reproductive Management of Dairy Heifers. Proc. of National Conference on Calves, Heifers and Dairy Profitability.
  • M.L. O'Connor and P.L. Senger. 1997. Estrous Detection: Chapter in Current Therapy in Theriogenology.pg. 276 - 284.
  • M.L. O'Connor, D. Griswold, R.S. Adams and L.J. Hutchinson. 2000. Fact Sheet - Trouble-shooting Infertility Problems in Cattle.
  • M.L. O'Connor. 2000. Nutritional Concerns For Opitmal Reproduction. Proc. of Penn State Dairy Cattle Nutrition Workshop. pg. 69 - 79.
  • M.L. O'Connor. 2001. Fact Sheet: Estrous Synchronization Programs for the Dairy Herd.
  • M.L. O'Connor. 2003. Fact Sheet: Checklist for Reproductive Management.
  • M.L. O'Connor. 2004. Fact Sheet: Reproductive Management Systems for Artificial Insemination of Dairy Heifers.
  • M.L. O'Connor. 2007. Textbook Chapter: Estrus Detection. In: Current Therapy in Large Animal Theriogenology 2n edition.

Research Publications

  • O'Connor, M.L., R.G. Saacke. 1978. Effect of Anti-Egg Yolk Diluent Sera Upon Bovine Spermatozoa in Egg Yolk Diluter. J. Anim. Sci. 47:660-665.
  • Chandler, J.E., M.L. O'Connor, R.G. Saacke and P.J. Wightman. 1980. Biocolloidal Properties of Serum-Induced Agglutination of Viable Bovine Spermatozoa. J. Biocolloid and Interface Sci. 73:303-311.
  • Saacke, R.G., C.E. Marshall, W.E. Vinson, M.L. O'Connor, J.E. Chandler, J.K. Mullins, R.P. Amann, R.A. Wallace, W.N. Vincel and H.C. Kellgren. 1981. Semen Quality and Heterospermic Insemination in Cattle. 9th International Congress on Animal Reproduction and Artificial Insemination. Vol. III, 283.
  • O'Connor, M.L., F.C. Gwazdauskas, M.L. McGilliard and R.G. Saacke. 1985. Effect of ACTH Administration on Semen Quality, Sperm Output and the Associated Hormonal Response in the Bull. J. Dairy Sci. 68:151-157.
  • Peters, J.L., P.L. Senger, J.L. Rosenberger and M.L. O'Connor. 1985. Radiographic Evaluation of Bovine Artificial Inseminating Technique Among Professional and Herdsman-Inseminators Using .5 and .25 ml French Straws. J. Anim. Sci. 59:1671-1683.
  • O'Connor, M.L., L.J. Hutchinson, R.S. Adams and R.S. Baldwin. 1985. An Integrated Approach to Reproductive Management. J. Dairy Sci. 68:2806-2816.
  • Magliaro, A.L., R.S. Kensinger, S.A. Ford, M.L. O'Connor, L.D. Muller, and R. Graboski. 2004. Induced Lactation in Nonpregnant Cows: Profitability and Response to Bovine Somatotropin. J. Dairy Sci. 87: 3290.
  • Egan, B.A., N.K.Diehl, K.A. Bryan, P.R. Tozer, A. M. Swinker, and M.L. O'Connor. 2006. Case Study: Behavioral, Anatomical, and Physiological Changes in Late Gestation Mares. Professional Animal Scientist. 22:94.