export_review of horse feeds Flashcards

1
Q

Horses spend what percentage of their time grazing and browsing?

A

60-75%

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2
Q

Horses ingest what % of their BW in DM/day?

A

2-2.5%

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3
Q

Feeding dried hays and concentrates will result in (less, more) time eating per day?

A

less, about 40% of day

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4
Q

Natural feeds of horses is what % carbs?

A

80%

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5
Q

Natural feeds of horses is what % protein?

A

8-12%

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6
Q

Natural feeds of horses is what % of fat?

A

4-6%

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7
Q

Fermentation in horses occurs (after, before) stomach and small intestine.

A

after

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8
Q

Oral cavity function:

A

increase SA for SI enzymatic action and break down CHO for LI bacterial fermentation

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9
Q

T or F: Horses are constantly salivating, regardless of chewing.

A

False; salivate only when chewing

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10
Q

Purpose of saliva in horse?

A

lubricant for esophageal passage; NO ENZYMATIC ACTIVITY

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11
Q

The equine stomach is ____% of GI capacity.

A

8%

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12
Q

Retention time for equine stomach

A

2-18 hours

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13
Q

Nonglandular region of equine stomach?

A

fundus

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14
Q

glandular region of equine stomach?

A

pylorus

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15
Q

Equine anterior pancreas secretes what in SI?

A

lipase, protease, amylase

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16
Q

Equine Microvilli in SI act to absorb?

A

monosaccharide, fat, AA, vitamins, minerals

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17
Q

Equine SI volume?

A

40-50 L (30% of total)

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18
Q

Equine Passage time for SI?

A

2-8 hours

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19
Q

Equine Volume capacity of LI?

A

100 L

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20
Q

Equine Transit time for LI?

A

around 50 hours

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21
Q

Equine LI ferments ____ to ____

A

CHO to VFA

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22
Q

Equine LI provide __% of ME?

A

30-50%

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23
Q

Equine LI absorbs ____L/day of water

A

80L/day

24
Q

T or F: NPN is utilized efficiently in LI of equine.

A

False; NPN not utilized well

25
Q

Bacterial B vitamins are absorbed where in equine GI?

A

LI

26
Q

3 things that adequate equine nutrition depends on?

A
  1. what they need
  2. what is available to feed
  3. how much they can eat
27
Q

Nutrients of concern in equine?

A

water, energy, protein, minerals, vitamins

28
Q

Avg water intake of horses/day?

A

25L/day

29
Q

Amount of Energy depends on:

A

physiologic state, environment, activity level, size

30
Q

The majority of energy in horse feeds is provided by:

A

carbohydrates

31
Q

Digestible Energy

A

Gross energy minus urine and GI gas

32
Q

Which equine feed has the lowest energy density?

A

hulls and fibers

33
Q

Which equine feed has highest energy density?

A

fat and oils

34
Q

Don’t exceed ____% fat in diet for equine

A

20

35
Q

> 50% of diet in horses should be:

A

forage (hay/pasture)

36
Q

<50% of diet for horses should be:

A

grains

37
Q

<20% of equine diet should be:

A

fat

38
Q

CP analyzed by:

A

amount of Nitrogen in feed

39
Q

baseline equine CP?

A

8-9%

40
Q

CP % for equine lactation?

A

14-15%

41
Q

Ca and P ratio for mature horses?

A

1.1:1 to 6:1

42
Q

Ca and P ratio for growing horses?

A

1.1:1 to 3:1

43
Q

Hyperkalemic periodic paresis caused by

A

increased K impairs conduction in heart; lower potassium (lower forage)

44
Q

Selenium toxicity in equine:

A

skin/hoof problems

45
Q

Selenium deficiency in equine:

A

white muscle disease

46
Q

Best way to assess selenium status?

A

analyze feed

47
Q

Maintenance Cu for eq?

A

10ppm

48
Q

Gestation Cu for eq?

A

12.5 - 50 ppm

49
Q

Weanling Cu for eq?

A

25ppm

50
Q

T or F: Horses appear to be very tolerant of higher copper levels (unlike sheep).

A

True

51
Q

Dark green forage should be high in what vitamins?

A

Vitamin A and Vitamin E

52
Q

T or F: A horse at maintenance can survive without any grain.

A

True

53
Q

Develop a feed recommendation using:

A

bodyweight, age and special needs, local feeds

54
Q

Standard feed measurement in horse world?

A

1 qt (coffee can)

55
Q

Flake of hay is approx ___lb

A

4 lb

56
Q

a 1000lb horse can eat up to ___lb of food?

A

20lb (2%)