Reproduction

  • Beef Reproduction Task Force
  • The Bovine Estrous Cycle - After heifers reach puberty (first ovulation) or following the postpartum anestrous period (a period of no estrous cycles) in cows, a period of estrous cycling begins. Estrous cycles give a heifer or cow a chance to become pregnant about every 21 days. 
  • Detection of Standing Estrus in Cattle - Estrous-detection aids or estrous synchronization protocols can greatly increase the likelihood of detecting cows in standing estrus. 
  • Tips for a Successful Synchronization Program [Kansas State University] - Do you know if your herd is a good candidate for synchronization of estrus? Can you identify potential problems if artificial insemination (AI) pregnancy rates are lower than expected in an existing program? 
  • Use of Natural Service Sires with Synchronized Estrus - Typically producers that synchronize estrus do so to facilitate an AI program. However there are some instances where application of an AI program is not feasible but advantages from synchronization of estrus are still desirable.
Michigan State University
  • Spartans Will.
  • © Michigan State University

MSU is an affirmative-action, equal-opportunity employer, committed to achieving excellence through a diverse workforce and inclusive culture that encourages all people to reach their full potential.

Michigan State University Extension programs and materials are open to all without regard to race, color, national origin, gender, gender identity, religion, age, height, weight, disability, political beliefs, sexual orientation, marital status, family status or veteran status. Issued in furtherance of MSU Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. Quentin Tyler, Director, MSU Extension, East Lansing, MI 48824. This information is for educational purposes only. Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned.

The 4-H Name and Emblem have special protections from Congress, protected by code 18 USC 707.

We comply with the Federal Trade Commission 1998 Children’s Online Privacy Protection Act (COPPA).