It is considered that after castration several months may be required before the ampulla and vas deferens become devoid of spermatozoa and the ejaculates azoospermic, and that pregnancy is unlikely to result from mating or insemination 1 week after castration.
Approximately week after castration, your horse will no longer be able to impregnate a mare but hormone levels may take 4 weeks to subside. Many geldings, particularly if they have been castrated when sexually mature, may retain some of the characteristics associated with a stallion.
In horses, as many as one third of completely castrated geldings will still achieve full erection, mount, insert, thrust, and ejaculate, especially when given pasture free access to females in estrus.
In practice you see that most stallions are gelded between 1 and 2 years old. You can also choose to geld the horse later, between 3 and 4 years old. If you geld the horse later, he will have developed more of a stallion's appearance, such as the broad neck and jawline, but he may also retain more stallion behaviour.
Stallions will typically remain fertile beyond their 20th year of age. The age that stallions stop producing spermatozoa will vary between stallions. It is important that semen is routinely evaluated on all stallions, especially when using older stallions because of the expected decrease of semen production with age.
In some cases, particularly informal nomenclature, a gelding under four years is still called a colt. A rig or ridgling is a male equine with a retained testicle or one which has been incompletely castrated. In the wild, colts are driven from their herds by the herd stallion somewhere between the age of one and two.
Semen remains in the horse's accessory sex glands and the portion of the vas deferens not removed during surgery. There is usually enough present for one ejaculation. Therefore, gelded mature horses should be quarantined from mares for 14 to 30 days post-surgery.
A rig is an entire male horse with no signs of external testicles so appears to be a gelding; but one or two testicles are still present, producing testosterone.
By contrast, when kept in groups on pasture, stallions are more often kept with mares and foals than other stallions and geldings. It is a better alternative to place high-ranking, dominant stallions together with calm geldings [16].
Mature stallions can breed two or three mares a day throughout a long breeding season and maintain a good level of fertility, but young stallions should not be expected to handle this level of work.
In the wild, herd stallions recognize and protect their offspring, and observers have often seen dad babysitting the kid while mom takes a well-earned break.
Most stallions can cover 30 to 40 mares in one year. This number can vary depending on how many times one mare needs to be covered to conceive.
Stallions can be safely housed together if introduced gradually and thoughtfully, according to Swiss research. “In the wild, stallions start forming bachelor bands from the age of 2 1/2 and stay together until the age of 4 or 5, when they acquire their owns harems,” says Sabrina Briefer Freymond.
The most common time to geld a colt is between six and twelve months of age.
Your mare can be turned out with other mares as long as they get along. A pregnant mare should not be turned out with a stallion or even geldings. Geldings, while they no longer have the sex drive of a stallion, can still get an erection.
Summary. In a normal castration, the two testes and the associated epididymis (sperm storage site located next to the testes) are removed. A gelding is termed "proud cut" if the horse has been castrated, but all or a part of a testis remains after castration.
Continued stallion-like behaviour can be a complication of castration. Geldings that display stallion-like behaviour are sometimes called false rigs. False rigs may display masculine behaviour ranging from genital investigation and squealing to mounting and even copulating.
It may be that overstimulation of the dopamine pathway is causing the horses to become hyperaroused. Alternatively, spontaneous erections have been cited in the literature as a comfort behaviour, and Franzin has considered that dropping may simply be a sign of relaxation.
Summary. A fairly common complaint in veterinary practice is the gelding that acts like a stallion. These geldings may mount mares, act possessive of mares in a band, achieve an erection, or pursue mares even while being ridden.
Horses and human are too genetically different. If a sperm from a horse somehow managed to merge with a human egg cell, the resulting embryo would be unable to live long enough to successfully implant.
Thanks to a survey of EQUUS readers we conducted decades ago, we know that geldings may show numerous stallion-like behaviors, such as lip curl (the flehmen response). They may try to breed mares, herd their mares and fight with other geldings. They may behave aggressively toward people and attack foals.
A gelding is a male horse that has been castrated.
Colt: A male horse under the age of four. Filly: A female horse under the age of four. Mare: A female horse four years old and older. Stallion: A non-castrated male horse four years old and older.
Answer : The gender of a stallion in the feminine is a mare. Stallions are mature male horses.
Gelded horses tend to grow taller as the growth plate closure is delayed, however stallions will develop more musculature. A male horse left to mature may develop musculature but may retain unwanted stallion behaviors after gelding.