Indeed this chimes with work done in the human field.
Vitamin d requirements for cats.
Too much can cause overly acidic urine which can lead to crystal formation and a lifethreatening blockage.
Pro vitamin d3 7 dehydrocholesterol in the skin of dogs and cats has a much lower concentration than that found in the skin of species that can convert 7 dehydrocholesterol to.
As this ratio becomes either wider or narrower than the optimum the requirement for vitamin d increases but no amount will compensate for.
That is from their diet.
Vitamin d toxicity in cats.
Marchnwe in may 2015 the university of edinburgh vet school announced the results of a study showing that seriously ill cats with high levels of vitamin d in their blood were more likely to be alive one month later than cats with low vitamin d levels.
When ingested in exorbitant levels however this fat soluble vitamin i e stored in the fatty tissues of the body and liver can cause serious health issues.
Cats and dogs have low vitamin d requirements when calcium phosphorus and the ratio of the minerals are correct.
For example unlike dogs cats require dietary sources of vitamin a arachidonic acid and taurine.
Dogs and cats unlike humans and most other species are unable to naturally convert very much vitamin d in their skin when exposed to ultraviolet light.
Too much can be toxic.
Before buying a supplement ask your veterinarian which kind if any is best suited for your cat s life stage and medical condition.
The need for vitamin d depends to a large extent on the ratio of calcium to phosphorus.
Where to buy cat supplements.
Vitamin d is vital in regulating the calcium and phosphorous balance in your cat s body.
Cats have some dietary requirements that are different from those of dogs and can develop nutritional deficiencies when fed diets formulated to meet the nutritional needs of dogs.
It also promotes the retention of calcium thus aiding bone formation and nerve and muscle control.
How do cats get vitamin d.