ANSC356 - Reproduction and Incubation

0.0(0)
studied byStudied by 0 people
GameKnowt Play
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/53

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

54 Terms

1
New cards

1) ovary

2) infundibulum

3) magnum

4) isthmus

5) uterus

6) vagina

7) cloaca

List the 7 parts of the hen’s reproductive tract

2
New cards

ovary

location of follicles

3
New cards

infundibulum

catches ovum at ovulation

4
New cards

magnum

deposits egg white proteins

5
New cards

isthmus

location fluid is added

6
New cards

uterus

deposits membranes & shell

7
New cards

vagina

stores sperm

8
New cards

cloaca

expels urine, feces, & egg; site of insemination

9
New cards

23-25 hours

Time it takes for an egg to develop

10
New cards

300 eggs

Modern hens lay about how many eggs per year?

11
New cards

12 eggs

The red jungle fowl (modern hen ancestor) lays about how many eggs per year?

12
New cards
term image

Label the parts of the egg

<p>Label the parts of the egg</p>
13
New cards

shell

hard, porous, protective structure around the egg

14
New cards

yolk

a structure full of nutrients which feeds the embryo

15
New cards

albumen

protein-rich egg white

16
New cards

germinal disc

region that contains embryonic cells, organelles, and RNA

17
New cards

air cell

formed when the cooling egg contracts and pulls the inner and outer shell membranes apart

18
New cards

vitelline membrane

membrane around the yolk

19
New cards

chalaza

spiral bands of tissue that suspend the egg yolk in the albumen

20
New cards

cuticula

protein-based membrane around the eggshell that protects against bacteria

21
New cards

pores

very small holes invisible to the naked eye

22
New cards

calcium

Egg shell is made mostly of what?1)

23
New cards

1) water

2) carbon dioxide

3) oxygen

4) bacteria

What 4 things can move through the egg shell pores?

24
New cards

shell

The ___ temp. is used to determine the embryo temp.

25
New cards

Salmonella

Common bacteria that colonizes egg shells

26
New cards

day 12

Growth hormone is produced by the embryo at what day in development?

27
New cards

Yolk

Color of this structure is determined by the hen’s diet

28
New cards

1) beta-carotene

2) lutein

2 compounds that determine egg yolk color

29
New cards

ovalbumin

Main protein found in albumen

30
New cards

Liquifies

The albumen _______ when refrigerated

31
New cards

basic

When the albumen liquifies the pH becomes more?

32
New cards

germinal disc

fertilization by a sperm cell occurs here

33
New cards

candling

process used to determine the size of the air sac

34
New cards

air sac

used to determine if humidity levels are incorrect during incubation

35
New cards

protein

The chalaza is made up of what?

36
New cards

cuticula

noncalcified, protein protective layer that covers the egg

37
New cards

1) Hen sitting (natural)

2) Artificial

2 processes of incubation

38
New cards

hatchability

number of eggs hatched divided by the number of eggs set

39
New cards

(chicks hatched/fertile eggs) * 100

hatchability percentage equation

40
New cards

83%

average hatchability in the USA

41
New cards

1) temp.

2) humidity level

3) position

4) oxygen level

5) carbon dioxide level

5 critical parameters for incubation & hatch

42
New cards

99.8°F

Ideal temp. day 1-19 of embryonic development

43
New cards

98.8°F

Ideal temp. day 19-hatch

44
New cards

< 96°F

> 103°F

2 temps. embryos will die at

45
New cards

50% to 55%

Ideal humidity percentage day 1-19

46
New cards

70%

Ideal humidity percentage day 19-hatch

47
New cards

small air sac

high humidity = ____ air sac

48
New cards

large air sac

low humidity = ___ air sac

49
New cards

3 to 5 times

Ideal number of times egg should be turned from day 2-18

50
New cards

1) prevents embryonic membranes from adhering to the shell membrane

2) aids in air circulation in the incubator

2 reasons eggs should be turned during embryo development

51
New cards

large end up or on their side

2 egg positions that are correct for embryo development

52
New cards

day 15 or 16

Day the embryo’s head is near the air sac

53
New cards

21%

Ideal percentage of oxygen in egg during embryo development

54
New cards

0.5%

Ideal percentage of carbon dioxide in egg during embryo development