Scurvy

Todayโ€™s path rounds are on ๐ฌ๐œ๐ฎ๐ซ๐ฏ๐ฒ!

๐–๐ก๐š๐ญ ๐ข๐ฌ ๐ข๐ญ?
๐’๐œ๐ฎ๐ซ๐ฏ๐ฒ is caused by ๐ฏ๐ข๐ญ๐š๐ฆ๐ข๐ง ๐‚ ๐๐ž๐Ÿ๐ข๐œ๐ข๐ž๐ง๐œ๐ฒ and is one of the most common management-related diseases in guinea pigs!

๐–๐ก๐จ ๐ ๐ž๐ญ๐ฌ ๐ข๐ญ?
As mentioned, guinea pigs get this condition, but so can other species like capybaras and humans.

๐–๐ก๐š๐ญ ๐œ๐š๐ฎ๐ฌ๐ž๐ฌ ๐ข๐ญ?
At its simplest, scurvy is caused by vitamin C deficiency in the diet. However, only some species will develop scurvy. Guinea pigs lack the enzyme ๐‹-๐ ๐ฎ๐ฅ๐ฎ๐ง๐จ๐ฅ๐š๐œ๐ญ๐จ๐ง๐ž ๐จ๐ฑ๐ข๐๐š๐ฌ๐ž, which is required for vitamin C production. Therefore, if guinea pigs do not have adequate vitamin C in their diet, they wonโ€™t be able to compensate by producing their own, thus leading to scurvy.

๐–๐ก๐ฒ ๐ข๐ฌ ๐ญ๐ก๐ข๐ฌ ๐š ๐ฉ๐ซ๐จ๐›๐ฅ๐ž๐ฆ?
Vitamin C has a critical role in the formation of ๐œ๐จ๐ฅ๐ฅ๐š๐ ๐ž๐ง, which is the most abundant protein in the body. In particular, collagen forms the major structural components of blood vessels, cartilage and ๐จ๐ฌ๐ญ๐ž๐จ๐ข๐ (unmineralized developing bone).

Without adequate vitamin C, this collagen becomes incredibly fragile, leading to massive hemorrhages around the body. In the bone, the guinea pig can develop swollen, painful joints due to the weak collagen causing irregular bone development. These guinea pigs can also start losing their teeth due to abnormal bone.

๐‡๐จ๐ฐ ๐ข๐ฌ ๐ข๐ญ ๐๐ข๐š๐ ๐ง๐จ๐ฌ๐ž๐?
Typically the veterinarian can diagnose this disease based on a history of poor management, and clinical signs of lameness and pain.

๐‡๐จ๐ฐ ๐ข๐ฌ ๐ข๐ญ ๐ญ๐ซ๐ž๐š๐ญ๐ž๐? ๐‡๐จ๐ฐ ๐ข๐ฌ ๐ข๐ญ ๐ฉ๐ซ๐ž๐ฏ๐ž๐ง๐ญ๐ž๐?
Any guinea pig will need vitamin C added into their diet, either by providing vitamin C in the water, or providing food items that have high levels of the vitamin. Example foods include tomatoes, spinach and asparagus, which are all tasty treats for a piggie! This proper management is critical for maintaining the health of your guinea pig.

๐๐ก๐จ๐ญ๐จ๐ฌ
1-3) Guinea pig legs showing hemorrhage from the fragile vessels.
4) An X-ray of a guinea pig with scurvy. The shape of the bones is somewhat irregular due to abnormal bone development and remodelling.
5) What the pathologist would see under the microscope! The blue material is mineralized bone forming ๐ฌ๐ฉ๐ข๐œ๐ฎ๐ฅ๐ž๐ฌ, however there isnโ€™t any bright pink ๐จ๐ฌ๐ญ๐ž๐จ๐ข๐ around them to organize their growth. This results in irregular bone development!

๐’๐จ๐ฎ๐ซ๐œ๐ž๐ฌ
Terio, KA, McAloose, D, St. Leger, J. Pathology of Wildlife and Zoo Animals. 2018.

Photos 1-5 ยฉ Noahโ€™s Arkive contributors Bryan, Leathers, Harrington, Williams licensed under CC BY-SA 4.0.

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