Quiz 9 Flashcards
high levels of Mg will interfere with K
false
a calorimeter gives a value of energy by measuring what
heat released from combustion
in ruminants TDN tends to overestimate energy for forage and underestimate energy for grains
true
temperatures above the thermoneutral zone will increase feed intake
false
HdE describes BLAN, HfE describes BLANK, HwE describes BLANK, and HrE describes BLANK
HdE- heat of digestion and absorption
HfE- Heat of fermentation
HwE- heat of waste product formation and excretion
HrE- heat of product formation
parakeratosis can develop with a deficiency of zinc
true
neonatal pigs are susceptible to iron deficiency due to poor maternal transfer of iron
true
feeding crystalline amino acids can lead to high CI in the diet due to combining CI to the amino acids complex
true
white muscle disease is a deficiency of selenium
true
indirect calorimetry uses a measurement of gases produced and converts it to a mathematical energy value
true
net energy from a protein is higher than fat due to the energy required to dispose of the by-products from N metabolism
false
excess Ca in diet can inhibit Zn absorption
true
TDN considers losses from heat and urine
false
manganese toxicity can lead to a slipped tendon
false
cobalt is required as a component of B12
true
energy is a nutrient
false
we can estimate ME, given DE and an assumption about the combined energy lost from urine and gas. That calculation is?
ME= 0.82 x DE
temperatures outside the thermoneutral zone will decrease energy requirements of an animal
false
overconsumption of cassava, soybeans, or brassicas could potentially lead to goiter
true
a deficiency in this mineral can cause pica
phosphorus
salt is a common source of what mineral
sodium
polioencephalomacia can occur in ruminants with a toxicity of this mineral
sulfur
rickets can be caused by a deficiency of phosphorus and what other mineral
calcium
copper is an antagonist for this mineral
zinc
grass tetany is commonly seen in cattle grazing lush pasture in the spring. what mineral deficiency will cause grass tetany
magnesium
the trace mineral most commonly associated with the thyroid hormone thyroxin is?
iodine
this mineral when fed at alternating concentrations (at requirements and deficient) can cause striations in wool or hair color due to depigmentation during a deficiency
copper
nutritional muscular dystrophy is caused by a deficiency of what
selenium
which mineral is a structural component of vitamin B12
cobalt
