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Breeding Horses: Heat (Estrus) Detection, Ovulation Prediction, Insemination Timing, and Pregnancy Diagnosis
  by Robert N. Oglesby DVM

Introduction

Introduction » Heat (Estrus) Detection » Controlling Onset of Heat (Estrus) » Minimal Insemination Techniques » Predicting Ovulation and Timing Insemination » More Info 

To get the most out of this article you should first understand the reproductive pattern of mares, more.

The determination of heat (estrus), ovulation, and pregnancy in a broodmare is an important aspect of any breeding program. With natural service and a available stallion these can be determined, on most mares, with a well run teasing program. With the increased use of artificial insemination (AI) many breeding mares today are on farms where there is no stallion on site to constantly tease mares. Even when there is a stallion and good teasing practices are used, a percentage (appx. 10%) of normal mares may be difficult to tell when in heat. The accurate timing of insemination and the early detection of non-pregnant mares helps prevent a late season foal or a missed season all together. Even when a stallion is present, accurate ovulation prediction can help reduce breeding pressure on a stallion and increase the number of mares a stallion can cover in a season.

This article discusses the various techniques available to the horseman and veterinarian for heat (estrus) detection, ovulation prediction, and insemination timing in equines and their relative advantages and disadvantages. Links to related articles and scientific reports are also present.
      ~Word Count: 2856 words (The average magazine page contains about 600 words);
      ~Last Updated: September 08, 2009;

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Discussions on Heat Detection, Ovulation Prediction, and Timing Insemination
  Titles Subtopics Posts Updated
iconUsing Deslorelin and HCG in same cycleMay 30, 09
iconResearch Study: Slower Ovulation in Older MaresFeb 23, 09
iconResearch Summary: Donkey Female AnatomyNov 17, 08
iconAbnormal vaginal discharge in mareJul 1, 08
iconResearch Summary: Follicle Diameter and Ovulation PredictionMay 8, 08
iconDetecting pregnancy via cervical observation & palpationApr 24, 07
iconToo old for AI at 16?15 Jul 29, 07
iconHeat detectionMar 19, 07
iconHCG affecting cycles?May 26, 04
iconBreeding on Foal HeatMay 17, 04
iconHow viable is this follicle???May 11, 04
icon1 year old filly in season?May 21, 03
iconPost Ovulation InseminationMay 20, 03
iconInseminating, HCG, and RegressionApr 12, 03
iconPregnancy DeterminationSep 2, 02
iconPost ovulation inseminationMay 17, 02
iconRunning & pregnancyApr 22, 02
iconMare that doesn't show in season much...Apr 16, 02
iconPainful CycleApr 11, 02
iconHeat problem - physical or mentalJun 25, 08
iconArchived DiscussionsClick link to access data.
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