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Breeding Horses: Heat (Estrus) Detection, Ovulation Prediction, Insemination Timing, and Pregnancy Diagnosis
by Robert N. Oglesby DVM
Introduction
Introduction
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Heat (Estrus) Detection
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Controlling Onset of Heat (Estrus)
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Minimal Insemination Techniques
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Predicting Ovulation and Timing Insemination
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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: May 28, 2008;
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Discussions on Heat Detection, Ovulation Prediction, and Timing Insemination
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Subtopics |
Posts |
Updated |
 | Abnormal vaginal discharge in mare | 1 | 7 | Jul 1, 08 |
| Research Summary: Follicle Diameter and Ovulation Prediction | 1 | 2 | May 8, 08 |
| Detecting pregnancy via cervical observation & palpation | 1 | 8 | Apr 24, 07 |
| Too old for AI at 16? | 1 | 15 | Jul 29, 07 |
| Heat detection | 1 | 3 | Mar 19, 07 |
| HCG affecting cycles? | 1 | 3 | May 26, 04 |
| Breeding on Foal Heat | 1 | 5 | May 17, 04 |
| How viable is this follicle??? | 1 | 3 | May 11, 04 |
| 1 year old filly in season? | 1 | 4 | May 21, 03 |
| Post Ovulation Insemination | 1 | 4 | May 20, 03 |
| Inseminating, HCG, and Regression | 1 | 6 | Apr 12, 03 |
| Pregnancy Determination | 1 | 2 | Sep 2, 02 |
| Post ovulation insemination | 1 | 2 | May 17, 02 |
| Running & pregnancy | 1 | 2 | Apr 22, 02 |
| Mare that doesn't show in season much... | 1 | 6 | Apr 16, 02 |
| Painful Cycle | 1 | 3 | Apr 11, 02 |
| Heat problem - physical or mental | 1 | 5 | Jun 25, 08 |
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