Chapter 9- Swine Industry Flashcards Preview

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Flashcards in Chapter 9- Swine Industry Deck (30)
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Where is pork produced the most

Midwest where the corn belt is located. North central states lead in production

1

What are the leading states

-Iowa (25% of all production)
-Illinois
-Missouri
-Michigan

2

How many litters can a sow have and how many pounds is it

-2 litters
-10 pigs a litter
20 pigs in total times 200lbs equals 4000lbs a year

3

What are some differences in reproduction from the bull and cow

-polytocous
-more uterine horn, small uterine body
-average litter 9 to 10 pigs

4

When does the female hit puberty

4 to 7 months of age

5

What is the size of the gilt at puberty

150 to 250 lbs

6

How long is the estrus

1-5 days

7

How long is estrous

21 days

8

When do board reach puberty

5 to 8 months

9

What is the size of the boar when it reaches puberty

175 to 250 lbs

10

When should a gilt be bred

Third estrus, you get 2-3 extra pigs

11

When should a sow be bred

12-24 hours after onset of heat

12

What are the practices used for mating

-hand (single) vs. lot (group)
-put one boar with one sow, allow to breed and then remove the boar

13

What is flushing and when should it be done

It increases feed to mating of gilts 4 to 5 days before breeding

14

What is the gestation length

114 days or 3 months, 3 weeks, and 3 days

15

When is the critical time

30 to 35 days into gestation

16

What is special about the embryos

-Has separate embryonic fluid
-They function separately without effecting others

17

How much salt is needed and what are the deficiency symptoms

-most commonly needed mineral
-requires 0.2-0.5% of their ration
-Deficiency Symptoms
-results in depraved appetite
-poor growth

18

What is phosphorus and calcium needed for and what are deficiency symptoms

-needed for skeletal growth
-balance is critical
Deficiency symptoms
-Lameness
-Paralysis of rear end
-add limestone

19

What is iodine used for and deficiency symptoms

-needed for: growth, gestation, and lactation
-used by thyroid: to produce thyroid hormones
-regulates body temperature
Deficiency symptoms
-goiter
-loss of hair
-feed iodized salt

20

What does iron do and what are the deficiency symptoms

-Needed for hemoglobin formation
-prevent anemia: occurs during suckling
-loss of appetite, become weak and inactive
Deficiency symptoms
-baby pig thumps
-accelerated heart beat

21

How do you prevent iron deficiency

-two injections of iron on day 3 and 21 days of age
-include in rations

22

What is zinc needed for and what are deficiency symptoms

-needed for proper skin health and growth
Deficiency symptoms
-swine dermatosis
-sloughing of skin

23

What are the vitamin B's

-Biotin
-Pantothenic acid
-Thamine
-Niacin
-Riboflavin and vitamin B12

24

What is biotin and deficiency symptoms

-Needed for growth and nervous system
Deficiency symptom
-loss of hair
-cracks in feet
-dermatosis-sloughing of skin

25

What is niacin needed for and what are the deficiency symptoms

Needed for hair growth and skin health
Deficiency symptoms
-slow growth
-pig pellagra (skin lesions)
-nervous and gastrointestinal disorders

26

What is Pantothenic acid needed for and what are deficiency symptoms

Needed for proper muscle and nerve function
Deficiency symptoms
-Classic goose stepping gait
-Epileptic like fits

27

What is riboflavin needed for and what are deficiency symptoms

Needed for growth and reproduction
Deficiency symptoms
-crooked legs

28

What is Thiamin needed for and what are the deficiency symptoms

Needed for growth, temperature regulation, and heart function
Deficiency symptoms
-low body temperature
-slow pulse rate

29

What is vitamin B 12 needed for and what are the deficiency symptoms

Needed for growth and nervous system
Deficiency symptoms
-hyper-irritability
-in coordination of the posterior