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Animal Science > Pig Part II (Exam II) > Flashcards

Pig Part II (Exam II) Flashcards

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1
Q

What hormone directly causes an increase in milk synthesis?

A

Prolactin

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2
Q

Which of the following hormones, released by the ovary, inhibits hormonal release from the hypothalamus?

A

Progesterone

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3
Q

The functional units of mammary tissue are?

A

Alveoli

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4
Q

The presence of a fetus inhibits this hormone from being released by the uterus to destroy the corpus luteum?

A

PGF2a

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5
Q

The nervous system originates from the?

A

Ectoderm

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6
Q

Which hormone by the pituitary targets the thyroid gland to produce T3 and T4?

A

TSH

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7
Q

What does insulin do in the body?

A

Lower blood glucose levels

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8
Q

A cow providing milk to her calf is an example of which behavioral system?

A

Care-giving

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9
Q

A calf bellowing out to her mother for milk is an example of which behavioral system?

A

Care-soliciting

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10
Q

Courtship and the flehmen response are both examples of which system of behavior?

A

Sexual

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11
Q

The (blank) is the term for the embryo that implants into the uterus which then develops tissues and organs and is called a(blank)?

A

Blastocyst,,,Fetus

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12
Q

Which hormone is released prior to parturition in the dam due to elevated cortisol levels from the fetus?

A

Relaxin

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13
Q

What is the correct order of anatomical structures(internal to external)?

A

Testis, epididymis, vas deferens, urethra, penis

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14
Q

Where is the site of natural copulation in all female livestock except for the sow?

A

Vagina

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15
Q

The digestive system originates from the?

A

Endoderm

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16
Q

What type of tissue is found in the alveoli?

A

Epithelial

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17
Q

What holds the mammary glands in place on the body?

A

Middle and lateral suspensory ligament

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18
Q

What hormone is directly responsible for ovulation?

A

LH

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19
Q

When you approach a ewe, she will often find an escape path around you and run away to avoid confrontation and contact. Which system of behavior is this an example of?

A

Agonistic

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20
Q

You drop your cellular phone in the pen with the pigs and they all run over to it and start moving it with their snouts. What type of behavior are they exhibiting?

A

Investigative

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21
Q

What does LH stimulate in the bull?

A

Testosterone synthesis

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22
Q

What does FSH stimulate in the boar?

A

Sperm production

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23
Q

What does glucagon do in the body?

A

Raise blood glucose levels

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24
Q

Which hormone specifically targets the cortex of the adrenal gland?

A

ACTH

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25
Q

You open the barn doors in the morning and the sheep nearest to the door gets up and walks out to the pasture to eat. All of the other sheep in the barn follow her. What type of behavior is the flock exhibiting?

A

Allelomimetic

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26
Q

Walking to class you notice all of the squirrels are gathered under a tree. Your partner exclaims, “It feels like rain!” Suddenly you realize that the squirrels are showing what behavioral type?

A

Shelter- seeking

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27
Q

Which hormone, produced by the ovary would increase the size of the mammary gland?

A

Estrogen

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28
Q

Which hormone, produced by the ovary would stimulate alveoli growth?

A

Progesterone

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29
Q

which of the following is not true about gametogenesis?

A

Occurs in a steer

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30
Q

Which of the following is not true about spermatogenesis?

A

Occurs outside the zona pellucida

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31
Q

Which of the following is not true about oogenesis?

A

Occurs in the seminiferous tubules

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32
Q

function of penis

A

copulation

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33
Q

function of seminal vesicles

A

produce the fluid portion of semen

34
Q

function of testes

A

produce the male gamete

35
Q

function of epididymis

A

transport sperm to the ampulla

36
Q

function of the tunica dartos

A

thermoregulation of the gonad

37
Q

function of the vas deferens

A

spermatazoa maturation

38
Q

Length of estrous cycle

A 
Cow = 21 days 
Sow= 17 days
Ewe= 21 days
39
Q

Length of estrus

A 
Cow= 18 hours 
Sow= 30 hours
Ewe= 60 hours
40
Q

Length of Gestation

A 
Cow= 18-48 days
Sow= 24-27 days
Ewe= 38-42 days
41
Q

connective tissue function

A

connect muscle to bone and other tissues

42
Q

nervous tissue functions

A

transmits information throughout body by stimuli (neurons)

43
Q

epithelial tissue functions

A

protection, secretion, excharge

44
Q

muscle tissue functions

A

aide in movement

45
Q

There are high levels of progesterone circulating a sow. What phase of the estrous cycle is she most likely to be in?

A

Luteal

46
Q

While counting sheep in your sleep, you notice that they are in heat. What are the dominant structures you would expect to find on the ovaries of those sheep?

A

follicles

47
Q

difference between estrus and estrous

A

estrus: period in which the female is in heat, accepting male
estrous: time from estrus to estrus

48
Q

Which hormone, produced by the ovary would stimulate alveoli growth?

A

Progesterone

49
Q

there are six different types of connective tissue in mammals name three.

A

fibrous, loose, adipose

50
Q

What is the predominant hormone being produced by the ovary if the animal is in the follicular phase of the estrous cycle?

A

Estrogen

51
Q

What is the stimulus ultimately causes lactation in mammals?

A

suckling

52
Q

What is the structure that allows for the exchange of nutrients and waste between a mother and the fetus is called?

A

Placenta

53
Q

What is the name for a specific type of hormone that is released outside of the body by a specific gender that targets the other gender for reproductive purposes?

A

Pheromones

54
Q

What is the scientific term for a fertilized oocyte?

A

Zygote

55
Q

What is the term for the natural end of gestation?

A

Parturition

56
Q

Name all 8 breeds of beef

A

Angus, Hereford, Simmental, Limousin, Brangus, Shorthorn, Brahman, Charolais

57
Q

Angus

A 
Highest numbers
british breed from scotland
naturally polled
black hair and skin
moderate frame size
maternal breed
good marbling
58
Q

Hereford

A 
#2 in numbers
british breed from england
red body w/ white face & underline
can be horned or polled
range cattle
docile
longevity
59
Q

Simmental

A 
continental breed
switzerland
red&white, yellow, black colored
growth traits
maternal traits
60
Q

Limousin

A 
continental breed
france
polled & horned
golden, red, black
large framed
muscular
rate of gain
feed efficiency
growth traits
61
Q

Charolais

A 
continental breed
frane
polled or horned
white, straw
large frame
muscular
growth rate
feed efficiency
62
Q

shorthorn

A 
british breed from england
polled or horned
red, white, roan coloring
docile
milking ability
63
Q

Brahman

A 
Zebu
US (brazil/india)
horned
gray & red
humped back
large, droopy ears
loose skin
heat tolerant
parasite resistant
maternal
64
Q

Brangus

A 
United States
3/8 brahman & 5/8 angus
polled
black
heat tolerant
early maturing
muscular
65
Q

Name all the dairy breeds

A

holstein, jersey, brown swiss, ayrshire, guernsey

66
Q

Holstein

A 
from netherlands
black and white
weigh 1500 lbs
#1 in US
highest milk yield
67
Q

jersey

A 
from jersey island
grey/fawn color
weigh 1000 lbs
#2 in US
highest milk fat
68
Q

Brown Swiss

A

From switzerland
solid black/brown
weigh 1400 lbs
#3 in US

69
Q

Ayrshire

A

from scotland
mahogany w/ white spots
weigh 1200 lbs
#4 in USA

70
Q

Guernsey

A

from guernsey island
light red and white/yellow
weigh 1100 lbs
#5 in US

71
Q

Describe ewe breeds

A 
white faced
reproductive efficiency
wool production
milking ability
longevity
72
Q

describe ram breeds

A

black faced
growth rate
carcass characteristics

73
Q

Rambouillet

A 
ewe breed
france
150-200 lbs
medium growth rate
medium muscling
74
Q

Corriedale

A 
ewe breed
New zealand
130-180 lbs
medium growth rate
medium muscling
75
Q

Suffolk

A 
ram breed
england
250-350 lbs
very high growth rate
high muscling
76
Q

hampshire

A 
ran breed
england
225-325 lbs
high growth rate
high muscling
77
Q

Dorset

A 
dual-purpose breed
england
ewes 140-180 lbs
rams 210-250 lbs
medium growth rate
medium muscling
78
Q

Columbia

A 
dual-purpose breed
USA
ewes 150-225 lbs
rams 225-300 lbs
high growth rate
medium muscling
79
Q

Yorkshire pig

A 
maternal breed
highest #s
large white breed, long body, large frame, erect ears
large litters
high milk production
heavy 21 day litter weight
slow growth rate
80
Q

Landrace pig

A 
from denmark
medium sized white breed, large droopy ears, straight snout, long deep body, flat back
large litters
efficient feed utilization
meaty carcass
81
Q

Duroc

A 
terminal breed
from Jersey reds & red berkshires
cherry red color, droopy ears, large
good carcass type & conformation
high muscling & carcass yield
fast growth rate
lean carcass
82
Q

hampshire pig

A 
terminal breed
black w/ white band around shoulders & front legs
erect ears, long face, small breed
lean carcass
thin backfat thickness

Animal Science (2 decks)

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