How does horses reproduce

Videos Figures Images Quizzes. Natural Service. Artificial Insemination. For More Information. Management of Reproduction: Horses. Test your knowledge. Which of the following most accurately depicts the difference between acute and chronic pain? More Content. Was This Page Helpful? Yes No. Overview of Management of Reproduction: Pigs.

Mares need to experience a natural photoperiod of decreasing length of daylight in the fall. The supplemental light must be added at dusk; light added in the morning before dawn is not effective.

A minimum of 10 foot-candles lux of incandescent or fluorescent light is necessary. The amount of light should allow one to comfortably read newsprint. Mares can be stimulated individually in a stall or as a group in a lighted paddock.

Mares can then be abruptly exposed to 16 hours of light each day, or the supplemental light can be gradually increased to a hour day throughout 60 days. In a less expensive, energy conserving, stepwise program, mares can be exposed to 3 hours of supplemental light in the evening the first week of December, and then the supplemental light is increased by 30 minutes each week until mares are exposed to 16 hours of light each day.

An automatic timer aids compliance and saves on labor. Mares can also be fitted with a commercially available facemask on December 1 that is programmed to emit a low level of blue light to one eye from 4 pm to 11 pm , mimicking long, summer days.

Ovarian activity is frequently manipulated by administration of hormones to facilitate scheduling of breeding appointments and to limit the number of breedings per estrus.

Breedings should be spaced for stallions breeding large books of mares by natural cover so that semen use is optimized. Geographic locations and transportation constraints may also necessitate scheduled inseminations.

Many situations can benefit from an ovulation control program. Signs are seen within 15 minutes and usually subside within 1 hour. Synthetic preparations, eg, cloprostenol sodium 0. The sustained-release GnRH analogue deslorelin acetate 1. Ovulation can be timed accurately using the following protocol not FDA approved : On days , 10 mg of estradiol beta and mg of progesterone are administered IM daily. On day 16, mares come into estrus, and insemination should be performed on day 19 or This regimen is effective at any time in cycling mares except when a large, dominant follicle Altrenogest is a synthetic progestin that suppresses the receptive sexual behavior of estrus.

Altrenogest is administered at 0. Estrus occurs 4—5 days after treatment ends, with variable timing of ovulation 8—15 days. All types of circulatory shock respond to administration of fluid therapy to some extent, but some types require additional medications.

Which type of circulatory shock is most readily handled with fluid therapy alone? More Content. Early nursing helps protect against disease. Was This Page Helpful? Yes No. Introduction to Behavior of Horses. Breeding in Horse Reproduction. The Reproductive Cycle of Horses. Most behavioralists consider this display to be more important in the courtship process than odor recognition. Dominance patterns are very much a part of breeding behavior, particularly in wild horses.

Dominance patterns are not as easily seen on most modern stud farms, where stallions are not allowed to run in groups with bands of mares.

In a natural environment, one stallion will typically dominate the breeding of a band of mares, and competing stallions will be banished to form their own separate band. At some point, one of the banished stallions will become old enough, brave enough, or tough enough to defeat the dominant stallion. In modern breeding establishments with numerous, separately stalled breeding stallions, all the stallions are used for breeding.

Dominance, nevertheless, is in evidence. Libido is the term used to denote sexual drive or the degree of sexual urge in animals.

A stallion with a high libido will exhibit an eagerness to mount and attempt to breed a mare. In natural situations, stallions exhibit a wide range of libido levels, from zero activity to extreme aggressiveness. Some stallions will have such a strong libido that they will sacrifice all other pursuits in favor of searching for and breeding mares in heat. An extremely high or low libido may cause problems.