The Bovine Estrous Cycle and Synchronization of Estrus

The Bovine Estrous Cycle and Synchronization of Estrus R.L. Larson Estrous synchronization gives many beef cattle producers the opportunity to capture the economic benefits of artificial insemination (AI).


The percentage of cows that become pregnant during a breeding season has a direct effect on ranch profitability. Consequently, a basic understanding of the bovine estrous cycle can increase the effectiveness of reproductive management.

D. J. Patterson, G. H. Kiracofe, J. S. Stevenson and L. R ...

D. J. Patterson, G. H. Kiracofe, J. S. Stevenson and L. R. Corah (MGA): A Review Control of the Bovine Estrous Cycle with Melengestrol Acetate J ANIM SCI€1989, 67:1895-1906.

Handbook of Estrous Synchronization

Estrous Synchronization (WRP # 014) 3 The Ohio State University/Ohio Agricultural Research and Development Center Abstract estrus synchronization for a given situation.

Signs of Estrus and Improving Detection of Estrus in Cattle

The next estrous period may be expected to occur in 18 to 20 days. This bloody discharge has no relationship to whether a cow has conceived during the previous estrous period.

P2616 The Estrous Cycle of Cattle

The estrous cycle of cattle is the period from one estrus (heat, phase of sexual receptivity) to the next estrus. For the cow and heifer, this period averages 21 days, with a typical range of 18 to 24 days in length.

Estrous Synchronization of Cattle

3163.1 F-3163 Oklahoma State University Oklahoma Cooperative Extension Service • Division of Agricultural Sciences and Natural Resources Glenn Selk Extension Animal Reproduction Specialist There are three primary methods of estrous synchronization available for beef producers who breed cattle ...

Anestrus and Estrous Detection Aids

Anestrus and Estrous Detection Aids IRM-7 Dairy Integrated Reproductive Management Dr. M.A. Varner University of Maryland The accurate and efficient detection of estrus (heat) in dairy cattle is an important component of a good reproductive management program.

Estrous Synchronization for Beef Cattle

This Fact Sheet discusses the potential benefits of estrous synchronization, how the products and programs work, and the results and costs involved.

Estrus Detection and Synchronization

2 Introduction This paper has been researched and assembled to provide its readers with accurate information and regimen on six methods of Estrous Detection and Synchronization for beef-cow herds.

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