Vitamin B5 (Panthotenic acid)

Pantothenic acid, also called vitamin B5, is a water-soluble vitamin. It is an essential nutrient horses require for the synthesis of coenzyme-A (CoA), the central metabolistic enzyme as well as for synthesizing and metabolizing proteins, carbohydrates, and fatty acids.

Sources

Healthy adult horses are able to synthesize b-complex vitamins in sufficient quantities via the bacteria in the large intestine (colon) if they are given enough forage. Particularly rich in pantothenic acid are mostly prodcuts from food producing animals whereas there is no natural source of pantothenic acids for horses.

Requirements

No studies have been conducted to establish the requirements of the horse for pantothenic acid as healthy adult horses normally are able to cover their daily needs by microbiological activity of their hind gut bacteria when fed a balanced diet.

Deficiency

Moldy hay, rations low in crude fiber, sudden feed changes or oral application of medications with a bacteriostatic effect can in principle result in a deficiency of B-complex vitamins, as the horse is virtually unable to store them.

If low synthesis of the intestinal flora is to be feared with rations rich in concentrated feed and low in crude fiber (e.g., in high-performance horses), a supplementation of b-complex vitamins should be considered.

Excess

Due to the fact that healthy adult horses are able to synthesize the required amounts of several b-complex vitamins, an excecss is very unlikely and only may occur with a very low likelyhood after heavy abuse of b-complex vitamin enriched supplements.

Important to know

Horses suffering from intestinal inflammation, malabsorption, diarrhea or overall loss of appetite can have a benefit when being supplemented with b-complex vitamins due to the lack of microbioal activity. Weak foals can be suported with b-complex vitamins to stimulate their appetite and provide them with essential vitamins as well. 

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