What Does Hcg Do For Horses?

Human chorionic gonadotropin (hCG) is a glycoprotein hormone used primarily to induce ovulation in mares.

How much hCG should I give my horse?

Despite reports of mares being treated with hCG since 1939,5 hCG is not approved by the FDA for use in horses. Never- theless, a single bolus dose of 1500 to 3300 IU is typically sufficient to induced ovulation in mares during estrus, with distinct estrous uterine edema and with a viable, growing follicle 30 mm.

How long after hCG will a mare ovulate?

Injection of hCG (2000-2500 i.u., i.v.) to mares when a follicle reaches 35 mm induces ovulation between 24 and 48 h. However, repeated injections induce antibodies against hCG. We report attempts to induce ovulation without this inconvenience. We called ‘response’ an ovulation between 24 and 48 h after treatment.

What shot makes a horse ovulate?

Human chorionic gonadotropin
HCG is approved and licensed for use in veterinary practice for inducing ovulation in mares. For several years, hCG has been used effectively in inducing ovulation in mares that are in behavioral estrus with a follicle of 35 mm or greater.

How does hCG stimulate testosterone?

It acts as an analogue of luteinizing hormone (LH), with the added benefit of a longer half-life (1, 4). As LH would do, hCG acts on Leydig cells, stimulating them to produce and release intratesticular testosterone (1).

When should I give my mare HCG?

Human chorionic gonadotropin is generally administered when a mare is in estrus, a follicle >35 mm is present and edema is visible in the uterus on ultrasound. Ovulation will usually occur an average of 36 hours after hCG administration.

What is an alternative to HCG injections?

Until recently, HCG was the drug of choice. Unfortunately, HCG is no longer a viable option, so we are replacing it with Enclomiphene citrate.

What size follicle should you breed a mare at?

Most mares are less likely to ovulate with a follicle that is smaller than 35 mm. Double ovulations with follicles on the same ovary are likely to occur with smaller diameter follicles – possibly less than 35 mm. Follicular growth is approximately 3-5 (three to five) mm per day.

At what size follicle will most mares ovulate?

Mares typically grow follicles to a size between 40 and 50 mm before they ovulate. Some mares may ovulate smaller follicles, and others (particularly draft breeds) will typically grow much larger follicles (50-60 mm) before ovulation.

What do you give a mare to make her ovulate?

The standard agent used to induce or “speed up” ovulation hasbeen hCG or human chorionic gonadatropin. This drug is given to mares withenlarging follicles and it serves to hasten the process of ovulation.

How quickly does hCG raise testosterone?

Serum testosterone increased from basal levels of 8.7 +/- 3.1 ng/ml (mean +/- SEM) to 23.0 +/- 1.4 ng/ml within 2 h of hCG-stimulation and returned to control levels by 2 days.

Which is better hCG or testosterone?

Previous studies on pubertal induction using hCG monotherapy and hCG + rFSH have each shown testicular growth and spermatogenesis in addition to adequate virilizing effects and better quality of life when compared to testosterone alone.

How long does it take for hCG to work?

Human chorionic gonadotropin (HCG) is a medication which has a similar structure and essentially the same hormonal action as LH. However, HCG has a much longer half-life (30 hours) than LH (30 minutes), with a peak onset of increased testosterone of about 72-96 hours after administration.

What to feed a mare before breeding?

Her diet can consist of 75 to 100 percent forage (pasture or hay) and 0 to 25 percent grain. All horses need to eat a minimum of 1 percent of their body weight in forage which is generally pasture or hay. For example, a 1,000 pound mare would consume 10 to 15 pounds of hay/pasture and 0 to four pounds of grain per day.

What can I give my mare to calm her down?

chamomile, cohash, and wild lettuce as well as other calming herbs. RelaxHer Blend is designed to not only have a calming affect for mares but to address the physical and hormonal changes that may be affecting their behavior during cycles.

How do you calm a mare in season?

To help your mare feel more comfortable, it may be recommended to supplement the mare’s diet either on an ad hoc basis or continuously during the oestrus cycle. Herbal products that relieve stress are especially popular.

Why was HCG discontinued?

The Food and Drug Administration (FDA) and the Federal Trade Commission said over-the-counter weight loss products containing human chorionic gonadotropin (HCG) are fraudulent and illegal, and the agencies have told seven manufacturers to stop selling them. They have become a popular but fraudulent fad.

Will HCG increase testicle size?

hCG was administered to 22 men with IHH until maximal testicular growth was achieved. Their mean testicular volume increased from 5.5 +/- 1.1 (+/- SE) mL (pretreatment) to 10.8 +/- 1.6 mL (maximum) during treatment (P less than 10(-6)).

What are the benefits of taking HCG?

HCG is used in combination with other fertility drugs to increase a woman’s chance of pregnancy. In men or adolescent boys, HCG helps the production of testosterone and sperm. HCG is also used in male children with cryptorchidism, a specific birth problem of the testes.

How many mares can a stallion cover in a day?

Stallions may always be “on,” but that doesn’t mean they can constantly breed. After all, they do need time to eat, sleep, exercise, and socialize. A stallion can typically cover one to three mares a day and about 30 to 40 mares in one year.

How many times should a stallion cover a mare?

If breeding by hand, it’s best to ultrasound the mare to see when she is close to ovulation and cover her every 12 hours until she does so.