Vitamin D

Question 1

What is vitamin D vital in?

Answer 1

the metabolism of calcium, and it is a precursor to hormone 1,25 dihydroxy vitamin D, the absorption of phosphorus

Question 2

What are dietary sources of vitamin D?

Answer 2

sunshine, fish, and liver

Question 3

What are synthetic sources of vitamin D?

Answer 3

vitamin D3, lanolin, vitamin D2

Question 4

What shuts off production of vitamin D?

Answer 4

fibroblast growth factor 23

Question 5

What is vitamin D3?

Answer 5

choleocalciferol

Question 6

How is choleocalciferol made?

Answer 6

by irradiating skin of most species

Question 7

What species cannot make choleocalciferol?

Answer 7

dogs and cats

Question 8

What is vitamin D2?

Answer 8

ergocalciferol

Question 9

What is ergocalciferol found in?

Answer 9

sun cured plant products, mushrooms, and sunlight irradiated yeast

Question 10

What can vitamin D deficiency cause?

Answer 10

rickets, osteomalacia, osteoporosis, nutritional secondary hyperparathyroidism

Question 11

How does vitamin D play a role in rickets in pigs?

Answer 11

pigs are deficient because of low placental vitamin D and low vitamin D in milk

Question 12

What species cannot get vitamin D deficient?

Answer 12

horses and rabbits

Question 13

How does calcium and vitamin D relate?

Answer 13

when blood calcium levels are low, the kidney decreases its excretion and secretes vitamin D to increase Ca absorption

Question 14

What does vitamin D deficiency cause in turtles and iguanas?

Answer 14

NSHP

Question 15

What are symptoms of vitamin D toxicity?

Answer 15

soft tissue calcification, weight loss, and kidney failure

Question 16

What can cause vitamin D toxicity?

Answer 16

ingestion of rodenticides containing vitamin D, enteque seco

Question 17

What disease can vitamin D toxicity cause?

Answer 17

osteoporosis