Vitamin D metabolism and disorders in dogs and cats
J Small Anim Pract. 2021 Jul 29. doi: 10.1111/jsap.13401
K E Clarke 1, E A Hurst 2, R J Mellanby 2
Vitamin D plays an important role in regulating calcium metabolism and in the development and maintenance of skeletal health of companion animals. There is also a growing interest in understanding the role vitamin D plays in non-skeletal health in both human and veterinary patients. This review provides an update of our current understanding of vitamin D biology in dogs and cats and gives an overview of how vitamin D metabolism can be assessed in companion animals. Congenital and acquired vitamin D disorders are then summarised before the review concludes with a summary of recent studies which have explored the role of vitamin D in the development and outcomes of non-skeletal diseases of dogs and cats.
Overview Veterinary and vitamin D has the following
Veterinary category hasAnimals need Vitamin D too
- Vitamin D is important for pregnancies (pigs as well as people)– Sept 2022
- Many Vitamin D similarities: people and cows - March 2022
- Several advanced-maternal-age problems reduced if given Vitamin D during pregnancy (mice in this case) – July 2021
- Poor immune system associated with low Vitamin D (dogs in this case) – June 2020
- Chicken bones, eggs, and activated vitamin D in eggs increased with 2 hours of daily UVB – Dec 2019
- Vitamin D in eggs increased 4X after UV lighting near legs was added – April 2019
- Hens with Vitamin D were better in at least 5 ways – RCT Aug 2018
Pets as well
- Critically ill dogs with good levels of vitamin D have much better outcomes (humans too) – March 2018
- Half of dogs now get cancer, it used to be just 1 percent (probably low Vitamin D)
- Dogs, cats, rabbits, guinea pigs, pet birds, etc need Vitamin D
- Dogs with Cancer have low vitamin D, same as humans – Sept 2017
- Companion animals (dog, cats) need vitamin D too – March 2016
- Hospitalized cats 8X more likely to die if low vitamin D (Vit. D helps humans too) – May 2015
- Rickets increasing in dogs
Farm Vets are paid when their "patients" are healthy,
vs doctors who are paid only when "patients" become sick
Cows are routinely given 30 IU per kilogram (which would be 10,000 IU for a 150 lb person)
Same information is available on Cattle need 66 IU of vitamin D per pound
The US RDA of vitamin D for cows is 13 IU per kilogram (which would be 4,300 IU for a 150 lb 'cow')
Virtually all US farmers who raise livestock use feed that is supplemented with vitamin D
Merick Vet Manual supplement if not have UV or sunlight
PDF is behind a paywall
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