Chapter 8-Sheep Production Flashcards Preview

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Flashcards in Chapter 8-Sheep Production Deck (58)
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What products do sheep produce

1. Wool
2. Meat
3. Skins
4. Milk

1

What is the class of sheep?

Mammalia- suckle their young

2

What is the sheep family

Bovidae- ruminant

3

What is the genus of sheep

Ovis

4

What is the species of sheep

Ovis aries

5

How are sheep classified

-type of wool
-meat type
-color
-horned or polled
-adapt ability characteristics

6

What are the classifications for wool

-fine wool
-medium wool
-long wool
-crossbreed wool
-hair breed

7

What does the reproduction of sheep have to do with the success of the industry

-success and profitability of any sheep industry is closely related to level of lamb production
-production costs are nearly the same if a ewe produces none or several offspring
-fertility affects productivity

8

What is the normal breeding season for sheep

-sheep are seasonal breeders
-their offspring are born at the most favorable time for the survival of the young

9

What is the age of puberty for sheep

5 to 12 months

10

What is an anestrous period

A period when ewes do not demonstrate estrus

11

What is the length between estruses

14 to 19 days

12

What is the duration of estrus

20-42 hours

13

What is the gestation period

143-152 days

14

How does the effect of the environment reproduction

-sexual activity is dependent on the ratio of daylight to dark.
-frequency of estrus
-more fertile

15

What is the ram effect

It is the process of keeping a ram close to the ewes for about 10 to 14 days before the breeding season begins

16

What are the benefits of the ram effect

-Ewes will cycle 2 weeks earlier in August instead of September
-ewes will have synchronized cycles
-due to the ram pheromones

17

What is flushing and what is the benefit

Flushing is provinding supplementation of feed two to three weeks before breeding
-increases the number of ovulation which increases the number if lambs born

18

How many ewes should a well-matured ram lamb mate

10-30

19

How many ewes should a yearling to 5 years mate

25-50

20

How many ewes should a six year to older produce

They are suited for hand breeding or pastures only

21

How does temperature effect reproduction in rams

Hot temperatures can reduce fertility

22

How long does it take for the formation and development of spermatozoa

6-7 weeks

23

When is semen testing recommended

-recommended for producer who uses one or two rams

24

Describe ewe management during gestation

-exercise
-put water at one end of the pasture and feed on the other end
-feeding
-supplemental feeding
-feed concentrate ration last three to four weeks
-developing fetus gains 2/3 of birth weight the last 6 weeks of gestation
-ewe should gain 20 to 30 pounds

25

What does inadequate nutrition during the last 6 weeks of pregnant result in

-pregnancy disease
-lower birth rates
-weaker lambs
-infant lamb mortality
-slower gaining lambs
-lower milk yields

26

What are the advantages of shearing a sheep before lambing

-shorn ewes seek shelter during poor climate to lamb
-easier to spot ewes close to lambing and udder problems
-more ewes in a limited space
-higher value wool clip is obtained

27

What are disadvantages of shearing before lambing

-a good building is essential for bad weather
-additional feed is required during cold weather
-ewes handled roughly too close to lambing early May lamb prematurely

28

How should the lambing quarter be

-should be draft free
-lambing pens
-should have about ten ewes to one lambing pen

29

Management during lambing

-make use of lambing jugs
-watch ewe closely and assist if necessary
-examine ewes that have been in hard labor for an hour without any progress