Trace elements (farm)

Question 1

Deficiency impact

Answer 1

Poor growth and production
Less imunity

Question 2

Specific syndromes

Answer 2

Copper - Swayback
Selenium - White Msc
Iodine - weak infants
Co - less growth

Question 3

Sources

Answer 3

Forage
Mineral blocks
Supplements

Question 4

Dx

Answer 4

Hx - pasture no supplement
Bloods-
Se - GSHP
Cu - amount transport
- biopsy liver
Co - B12
I - Plasma inorg I

Question 5

Cu

Answer 5

Liver storage
Toxicity
- haemolysis
- jaundice and death
Texels RF
Maize high
Grass 50%
Def - Mo -thiomolybdates
Supplementation
- Pasture dressin(SO4)
Dairy cow risk
Need vet prescr

Question 6

Zn Def

Answer 6

Immune and teratogenic
Keratin integrity

Question 7

Se - Vit E

Answer 7

Mainly part of anti oxidants (Se)
(Glutathione peroxidase)
Vit E, mem bound
Se - retain plasma vE
- preserves panc int.
Vit E - maintains Se in active form
Mutually replacable

Question 8

Se def

Answer 8

White Msc Dz
Ill thrift
Retained placenta
Imp immunity
Se enzyme needed for thyroid function (cattle)

Question 9

Se Tox

Answer 9

Ac - blind staggers
Chr- dull, rough coat
Supplementation err

Question 10

Iodine

Answer 10

Thyroid function
Repro CS
Interactions
-plant goitrogens
-N fert. v I
-Teat dips I Abs

Question 11

I Dx

Answer 11

T3, plasma inorganic I
Goitre

Question 12

Co def

Answer 12

Cobalamin B12
Sheep> cow
CS take weeks
-Poor app/ growth
-Thin skin, poor hair
Dx - serum/ liver B12 (store)