Yearly, with a booster as needed, such as in the case of an injury, like stepping on a nail, when a horse is at greater risk of contracting tetanus.
Horses need a tetanus shot once at year and probably a booster if they are injured with cuts or open wounds.
DailyDaily
The necessary vaccinations for horses vary in different areas of the world. And even in a given area there is no one-size-fits-all vaccination program for horses because the risk of exposure to infectious agents can still be quite variable. In the United States, the American Association of Equine Practitioners has designated Eastern and Western Equine Encephalytis, West Nile Virus, Tetanus and Rabies as "Core" vaccinations. This means that the AAEP believes that all horses in the US should be vaccinated against these diseases yearly. There are several other vaccinations that are considered "risk based vaccinations", meaning that they should be given based upon the horse's risk of exposure. Examples of "risk-based vaccinations" are Influenza, Equine Herpes Virus 1 & 4, Strangles, Potomac Horse Fever, Botulism, etc. Risk factors can include geographic location, age and use of the horse and management of the horse. Horse owners should contact their local veterinarian to discuss the recommended vaccinations for their area and situation
Depending on the vaccinations involved, most cattle should be done once or twice a year.
Daily you should always clean your horses stall at least once a day
A horses stall should be cleaned every day if possible but if not every other day.
NEVER.
For all horses and foals, three months of age and above, the primary vaccination course consists of two injections of Equivac-T orEquivac 2 in 1, four weeks apart, followed up by a booster dose one year later. Boosters after this are recommended every five years.
a stall?? Once daily...
you should really clean your horses stall from 3-6 days of the week.
A horses stall should be cleaned every day.
Horses should be vaccinated against Tetanus yearly as they are one of the most highly susceptible species of animal to the toxins that cause the disease and because they shed the bacteria in their feces so are at risk of exposure.