Term
True or False
Marginal vitamin deficiencies are common in horses |
|
Definition
|
|
Term
| What are some symptoms of vitamin deficiencies? |
|
Definition
loss of appetite
poor growth
poor athletic performance |
|
|
Term
True or False
There are differences in vitamin requirements between breeds |
|
Definition
|
|
Term
| How might stress increase vitamin requirements? |
|
Definition
| promotes vitamin excretion |
|
|
Term
| Which is one of the few vitamins deficient in ruminant diets? |
|
Definition
|
|
Term
| Which vitamin is important in vision, epithelial membranes & bone growth? |
|
Definition
|
|
Term
True or False
Vit A is an excellent antioxidant |
|
Definition
|
|
Term
| Why does parasitism affect conversion of carotene to Vit A? |
|
Definition
| this occurs in the intestinal mucosa & peripheral tissue, the presence of parasites will inhibit the process |
|
|
Term
| What are some dietary sources of Vit A or beta carotene? |
|
Definition
| green coloured hay & lush green pasture |
|
|
Term
| Why is the Vit A requirement higher for horses who are working? |
|
Definition
| increased stress on the integrity of mucous membranes |
|
|
Term
| Why are Vit A & carotene prone to oxidation? |
|
Definition
|
|
Term
|
Definition
|
|
Term
| Why is bone fragility associated with hypervitaminosis A? |
|
Definition
| excess vit A causes resorption of bone matrix & cartilage |
|
|
Term
True or False
An excess of beta carotene is likely to lead to hypervitaminosis A |
|
Definition
false
conversion of beta carotene to Vit A is controlled based on requirements |
|
|
Term
| What are some supplementary forms of Vit A? |
|
Definition
|
|
Term
| What vitamin is required for regulating Ca/K metabolism & calcification of bones? |
|
Definition
|
|
Term
True or False
Horses can synthesize Vit D |
|
Definition
| true, if they are exposed to UV |
|
|
Term
True or False
Vit D is common in commercial feedstuffs |
|
Definition
|
|
Term
| Calcification of blood vessels is associated with an excess of what vitamin? |
|
Definition
|
|
Term
| What plant is particularly rich in Vit E? |
|
Definition
|
|
Term
True or False
Selenium is an anti-oxidant |
|
Definition
|
|
Term
| A deficiency of what vitamin will lead to degeneration of nerve membranes? |
|
Definition
|
|
Term
| An abnormally wide-based gait & loss of hindlimb coordination is associated with a deficiency of what vitamin |
|
Definition
|
|
Term
| What are the symptoms of hypervitaminosis E in horses? |
|
Definition
| this has not been documented in horses |
|
|
Term
True or False
Feeding supplemental vegetable oils can reduce the content of Vit E in horse feeds |
|
Definition
|
|
Term
| What vitamin is required for blood coagulation? |
|
Definition
|
|
Term
True or False
Vit K can be synthesized by intestinal bacteria |
|
Definition
|
|
Term
True or False
Feeding Vit K is a good method of preventing exercise-induced pulmonary hemorrhage |
|
Definition
False
This sill affect intestinal absorption of other fat soluble vitamins |
|
|
Term
True or False
Vit C is easily absorbed in the ileum |
|
Definition
False
Relies on passive diffusion, and is not well absorbed |
|
|
Term
True or False
Biotin is easily stored in the body |
|
Definition
|
|
Term
| What effect does avadin (in raw eggs) have on biotin bioavailability? |
|
Definition
| reduces bioavailability as avadin binds biotin |
|
|
Term
| When might extra supplementation of biotin be necessary? |
|
Definition
| horses with severe hoof damage |
|
|
Term
True or False
Vit A is an excellent anti-oxidant |
|
Definition
|
|
