Exam 3

Question 1

overconsumption of choline can cause hypertension

Answer 1

false

Question 2

the production stage in dairy cattle where the BCS is managed by feeding mid to low quality forages and providing about 25 pounds of DMI/day is the

Answer 2

far off dry cow period

Question 3

in ruminants TDN tends to overestimate energy for forage and underestimate energy for grains

Answer 3

true

Question 4

a starter diet for turkeys should contain no more than what percent CP

Answer 4

28

Question 5

we can estimate ME, given DE and an assumption about the combined energy lost from urine and gas. the calculation is?

Answer 5

ME=0.82 X DE

Question 6

free choice access to feeds may require more supervision from the producer

Answer 6

true

Question 7

HfE goes down with high fiber feeds

Answer 7

false

Question 8

HdE describes

Answer 8

heat of digestion and absorption

Question 9

HfE describes

Answer 9

heat of fermentation

Question 10

HwE describes

Answer 10

heat of waste product formation and excretion

Question 11

HrE describes

Answer 11

heat of product formation

Question 12

beef cows during their 3rd winter should be fed to lose no more than 5-10%of their fall body weight

Answer 12

true

Question 13

TDN considers losses from heat and urine

Answer 13

false

Question 14

molasses can be included in the diet at no more than 2% of diet

Answer 14

true

Question 15

the only mineral with a legal feeding limit is selenium

Answer 15

true

Question 16

net energy system

Answer 16

A: gross energy
B: fecal energy
C: digestible energy
D: urine and gas energy
E: metabolizable energy
F: Heat increment
G: net energy

Question 17

pyridoxine can be found in high quantities in muscle

Answer 17

true

Question 18

in the growing feedlot phase, the target ADG is 1-1.75 lbs

Answer 18

false

Question 19

a lactating cows diet would include low quality forages

Answer 19

false

Question 20

net energy from a protein is higher than fat due to the energy required to dispose of the by-products from N metabolism

Answer 20

false

Question 21

a dairy heifer reared as a replacement should gain approximately 3-4 lbs per day from birth to freshening

Answer 21

false

Question 22

parakeratosis can develop with a deficiency of zinc

Answer 22

true

Question 23

exposure to cassava, brassicas, DDT, and tetracyclines could possibly lead to what condition

Answer 23

goiter

Question 24

liquid feeding has some benefits for young weanling pigs as they tend to eat we feed more

Answer 24

true

Question 25

the SCR Pro collars measure

Answer 25

activity rumination

Question 26

high dietary fat increases requirement of choline

Answer 26

true

Question 27

what mineral is fed in reduced amounts in laying hens to decrease wet droppings

Answer 27

salt

Question 28

turkeys are commonly fed in split-sex groups to achieve the correct diet composition

Answer 28

true

Question 29

in the finishing feedlot phase, the target ADG is 3-3.5 lbs

Answer 29

true

Question 30

neonatal pigs are susceptible to iron deficiency due to poor maternal transfer of iron

Answer 30

true

Question 31

soybean meal is the most widely used plant protein in poultry feeds

Answer 31

true

Question 32

to induce molt, laying hens are fed higher protein, energy, and fiber

Answer 32

false

Question 33

when flushing gilt, feed should be increased...

Answer 33

up to 14 days before breeding

Question 34

high levels of Mg will interfere with K

Answer 34

false

Question 35

temperatures above the thermoneutral zone will increase feed intake

Answer 35

false

Question 36

which of the following apply to stocker cattle

Answer 36

- fed to gain 1-1.25lb/d - long period (250-350d) - often thin or carry little finish - weaned calves bought in fall and over wintered on high roughage

Question 37

TDN undervalues protein because it doesn't 100% combust in the body

Answer 37

true

Question 38

all of the following are alerts that can be provided by the SCR collars except

Answer 38

internal temp

Question 39

temperatures outside the thermoneutral zone will decrease energy requirements of an animal

Answer 39

false

Question 40

DDGs can often lead to consumption of high levels of sulfur

Answer 40

true

Question 41

a calorimeter gives a value of energy by measuring what

Answer 41

heat released from combustion

Question 42

scurvy is a disease that develops from a vitamin c toxicity

Answer 42

false

Question 43

folic acid is required during early digestion for normal neural tube development

Answer 43

true

Question 44

indirect calorimetry uses a measurement of gases produced and converts it to a mathematical energy value

Answer 44

true

Question 45

a megacalorie is the equivalent of 1000 calories

Answer 45

false

Question 46

steely wool can develop in sheep due to a selenium deficiency

Answer 46

false

Question 47

calcium deficiency can be commonly observed in early lactation of dairy cattle

Answer 47

True

Question 48

vitamin A is transported in the blood bound to RBP

Answer 48

true

Question 49

manganese toxicity can lead to a slipped tendon

Answer 49

false

Question 50

vitamin D metabolism

Answer 50

A: 25 hydroxylase B: 25 hydroxycholecalciferol C: kidney D: 1 alpha-hydroxylase E: 1,25 Di-Hydroxycholecalciferol F: 1,25 Di-Hydroxycholecalciferol G: intestines H: Ca and HPO4 I: calcification J: parathyroid hormone

Question 51

Grass tetany is commonly seen in cattle grazing lush pasture in the spring. What mineral deficiency will cause grass tetany?

Answer 51

magnesium

Question 52

Polioenchephalomalacia can occur in ruminants with a toxicity of this mineral.

Answer 52

sulfur

Question 53

Nutritional muscular dystrophy is caused by a deficiency of what?

Answer 53

selenium

Question 54

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 .

Answer 54

copper

Question 55

Which mineral is a structural component of vitamin B12?

Answer 55

cobalt

Question 56

Rickets can be caused by a deficiency of phosphorus and what other mineral?

Answer 56

calcium

Question 57

Salt is a common source of what mineral?

Answer 57

sodium

Question 58

A deficiency in this mineral can cause pica.

Answer 58

phosphorus

Question 59

Copper is an antagonist for this mineral.

Answer 59

zinc

Question 60

The trace mineral most commonly associated with the thyroid hormone thyroxin is ?

Answer 60

iodine

Question 61

pica can be a sign of phosphorus deficiency

Answer 61

true

Question 62

menaquinone

Answer 62

Bacterial synthesized form of vitamin K

Question 63

calcitriol

Answer 63

Hormone form of Vitamin D

Question 64

deficiency of vitamin E

Answer 64

exudative diatheses

Question 65

Vitamin K is responsible for synthesis of this book clotting factor

Answer 65

prothrombin

Question 66

phylloquinone

Answer 66

form of vitamin K found in green plants

Question 67

most active form of vitamin E

Answer 67

alpha-tocopherol

Question 68

deficiency causes rickets

Answer 68

vitamin D

Question 69

retinol

Answer 69

Version of vitamin A with 100% bioactivity

Question 70

which of the following is consistent with an additive during finishing phase

Answer 70

MGA Monensin