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Disturbances in Reproduction > Swine 1 > Flashcards

Swine 1 Flashcards

1
Q

Define farrow.

A

To give birth to a litter - the process of parturition

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2
Q

Define weaning.

A

The separation of piglets from the sow

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3
Q

Define gilt.

A

Female pig that has not farrowed a litter

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4
Q

Define sow.

A

Female after birth of first litter

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5
Q

Define boar.

A

Mature intact male

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6
Q

Define parity.

A

Used to measure sow age or longevity - equal to the number of litters that the sow has farrowed

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7
Q

What is the BCS scale in swine?

A

1- emaciated

2 - thin

3 - ideal

4 - fat

5 - obese

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8
Q

What is the length of estrus in the swine?

A

2-3 days

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9
Q

What is the duration of the estrous cycle in swine?

A

18-24 days (21 day average)

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10
Q

What is the length of gestation in swine?

A

114 days (3 months, 3 weeks, and 3 days)

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11
Q

When does the age of first estrus typically occur in the gilt?

A

180-210 days

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12
Q

What is the weaning to breeding interval in swine?

A

5-7 days

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13
Q

What is the average total litter size for swine?

A

>12.5

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14
Q

What is the average ‘total born alive’ number in swine?

A

>11.5

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15
Q

How many pigs are weaned per litter typically?

A

>10.0

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16
Q

Are swine seasonal breeders?

A

no

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17
Q

a.

A

115 day gestation length

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18
Q

b.

A

farrows

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19
Q

c.

A

21 day lactatio length

20
Q

d.

A

weaned

21
Q

e.

A

3-7 day wean to estrus interval

22
Q

f.

A

165 day growth period

23
Q

g.

A

Moved into a breeding herd as a replacement gild

24
Q

h.

A

Sold to terminal markets (270-280 lbs)

25
Q

i.

A

210 days or 280 lbs

26
Q

j.

A

Gilts are breed eligble on 2nd estrus

27
Q

Highest health status indicates highest _______.

A

Biosecurity

28
Q

How are boars usually housed?

A

Individually similar to gestation stalls

29
Q

How often are boars collected for AI?

A

3 times every 2 weeks - every 4-5 days

30
Q

If semen is not used, what should be done to the boars?

A

They should be collected weekly to promote good ejaculates in the future

31
Q

Pooled semen involves semen of how many boars?

A

3-5 boars

32
Q

What is the point of pooling system?

A

Reducing the impact of sub-fertile boar that was not assessed by motility/morphology

33
Q

What temperature is crucial during collection and processing of semen?

A

35 degrees C

34
Q

What temperature is crucial for storage of boar semen?

A

16-18 degrees C

35
Q

What are you looking for to determine quality control of semen pre-extension?

A

Motility, morphology, contamination, and clumping

36
Q

What is the acceptable motility of boar sperm?

A

>70% of the sperm are moving

37
Q

What is the exceptable amount of normal morphology in boar sperm? How many should you observe?

A

Observe 25-50 sperm - acceptable is >70%

38
Q

What are some abnormalities found in boar sperm?

A

Distal midpiece reflex, proximal droplet, distal droplet, bent/coiled tails, and other

39
Q

What factors affect boar fertility?

A

Age, frequency of use, nutrition, environmental factors, and health status

40
Q

Do boar or sow farms have more biosecurity?

A

Boar farms

41
Q

What is the protocol for biosecurity in sow farms?

A

Still shower in and shower out

42
Q

What is the purpose of sow farms?

A

To produce wean pigs for finishers

43
Q

Where are sows housed in sow farms?

A

In gestation crates or group housing

44
Q

Where are sows moved to farrow?

A

to farrowing crates - organized from youngest to oldest

45
Q

After weaning, where are sows moved?

A

To a breeding barn to start a new rotation

Disturbances in Reproduction (49 decks)

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