Microelements Flashcards
What samples do we use for Assessing the mineral adequacy
Animal sampling:
Stores
Circulating pool
function
Where to sample animal- Organ
Liver
Clinical sign of Vit B12(Cobalt) deficiency
Results in Vit B12 deficiency (Pine)
Starvation with appetite suppression, ocular discharge, anaemia and fatty liver
Lambs>adult sheep>cattle
Dx of Vitb12 deficiency (pine)
Sheep: Vit B12 blood
Cattle: Liver, milk vit B12 or Methylmalonic acid in serum
Clinical sign of selenium deficiency
white muscle disease
Reduced growth, especially wool
Reduced immune function and fertility
Reduced ovine neonate survival due to less T3
Dx of selenium defiencies
Serum Glutathione peroxidase
Tx of Vitb12 deficiency
Fertiliser/boluses/feed/injections (short or long acting) or mineral added to diet
Tx of selenium deficiencies
Boluses/ oral dose /injections (depot)/fertiliser/ mineral addition to diet
Clinical signs of copper deficiencies
Ataxia-neonatal/delayed and atypical (stand transfixed with head quivering due to cerebral oedema)
Steely wool-crimp loss
Depigmentation
Diarrhoea
Anaemia, infertility and poor growth
Fractures in adults
Dx of copper deficiencies
Liver store
Serum – transport homeostasis
Tx of copper deficiencies
Fertiliser (probably not in Europe)
Drench/bolus/ruminal needles
Genetic selection
What could happen when cattle feed is given to sheep
Copper deficiencies
Red clover is a cause of what toxicities
Copper
Clinical sign of iodine deficiency
Goitre
Scant wool
Sometimes high mortality in absence of goitre due to starvation/ hypothermia
Dx of iodine deficiency
Post mortem – measure ratio of thyroid weight: body weight (<0.4g thyroid:1kg BW)
Plasma inorganic iodine (PII) – contemporary iodine intake
