sheep husbandry Flashcards

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1
Q

Gestation length

A

around 147 days

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2
Q

when do lambs reach puberty

A

around 8 months

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3
Q

what is the production cycle of a ewe

A
  • October/November = put to ram
  • march/April = lambing
  • may/June = weaning
  • august/ September = ewe ‘flushed’ (fed enhanced diet before tupping)
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4
Q

what is the production cycle of a lamb

A

-march/April = birth
- may/June = weaning
- august/september= early finish on grass then to slaughter OR
- January = older lambs finished on roots though the winter then to slaughter

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5
Q

what husbandry requirements are needed from conception to 42 days

A

this is the early phase, feed for ewe maintenance (grass +/- forage)

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6
Q

what husbandry requirements are needed on days 42-90 of pregnancy

A
  • feed for ewe maintenance + 2MJ/day (grass +/- forage) so that the placenta develops enough
  • ultrasound scan
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7
Q

what husbandry requirements are needed days 90- parturition

A
  • fed 2x maintenance requirements by lambing time
  • good nutrition is essential
  • around 6 weeks before lambing, ewes are moved to more sheltered fields or indoors
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8
Q

3 positives and 3 negatives for indoor lambing

A

positives:
- reduces the risk of lamb hypothermia
- easy to monitor and intervene
- more control on ewe diet pre-lambing

negatives:
- potential disease spread
- risk of mismothering
- stressful to move ewes prior to lambing

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9
Q

3 positives and 3 negatives to outdoor lambing

A

positives:
- more space
- less disease spread
- less stressful for ewe

negative:
- harder to monitor and intervene
- risk of lamb hypothermia
- risk of predation

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10
Q

do hill sheep prefer to lamb outdoors or indoors?

A

outdoors, hardy breed

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11
Q

do lowland sheep prefer to lamb outdoors or indoors?

A

shelter or housing is usually provided, usually brought indoors in late gestation

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12
Q

basic order of lambing?

A
  • feet appear 1st
  • head follows
  • lamb delivered
  • bonding
  • check teats and milk
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13
Q

how can you age sheep?

A

mouthing
- you can age sheep by looking at the age of the teeth: when permanent incisors replace milk teeth

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14
Q

what areas of a sheep do you look at and feel to BCS them?

A

transverse and spinous processes

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15
Q

what are common sheep husbandry procedures

A
  • ageing sheep by teeth
  • BCS
  • Foot trimming
  • shearing
  • vaccinations
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16
Q

what is shearing?

A

procedure to remove a sheep entire fleece in one piece

17
Q

what is crutching

A

removing the wool from around the tail and between the back legs

18
Q

why do you shear sheep

A
  • so that they don’t overheat
  • reduces the risk of fly strike
19
Q

when do you usually shear sheep

A

early summer, may marks the start of a shearing season in uk

20
Q

what welfare considerations are there with sheep shearing

A
  • injury, which then causes stress
  • shorn sheep need to be protected from very cold/wet conditions for several weeks after
21
Q

what is a vaccination

A

administration of a vaccine to stimulate the immune system to develop adaptive immunity to a pathogen

22
Q

which common vaccines do we vaccinate sheep with

A
  • clostridia spp.
  • Pasteurella
  • enzootic abortion and toxoplasmosis
23
Q

when do you vaccinate ewes

A

4 weeks before lambing so the lambs can gain protection via colostrum and milk

24
Q

when can you vaccinate lambs from

A

3-4 weeks

25
Q

what welfare considerations is there with vaccinations

A
  • giving subcutaneous injections when fleece is wet can result in abscess
  • gentle handling of pregnant ewes
26
Q

when does scanning take place?

A

55-100 days after removal of the rams

27
Q

Go throuh the annual sheep cycle

A

October:
- flushing for tupping
- pre breeding checks
- ewe abortion vaccine

November:
- tupping 25-100 ewes/ram
- usually 2 ewe cycles

December:
- rams removed (after 6-8 weeks with the ewes)

January:
- scanning for pregnancy
- sale of barren ewes

February:
- nutrition evaluated
- concentrates from 6 weeks prior to lambing

march:
- pre- lambing ewe vaccines 4 weeks prior to lambing

April:
- lambing
- castration
- docking
ewe and lambs returned to grazing

may:
- 1st lamb vaccinations
- worming lambs
- creep feeding: lambs
lambs will start to eat properly at 6 weeks

june:
- 2nd lamb vaccine
- shearing of adults and last years lambs

july:
- weaning of best lambs
- first batch of this season’s lambs sold

august:
- ewes ad lambs grazing separately
- lambs monitored for growth and shed off for slaughter

September:
- lambs moved to stubble turnips for winter grazing
- ewe rest and gain BCS

28
Q

3 types of land? describe them and a breed of sheep you find there

A
  • hill: harsh climates, long winters, poor soil quality.
  • Scottish blackface, cheviot
  • upland: less harsh than hills but land and soil still not very productive
  • teeswater
  • lowland: least harsh weather conditions, more soil productivity
  • texel
29
Q

what type of system is the uk sheep system?

A

stratified

30
Q

products of the sheep industry

A
  • meat
  • wool
  • milk
31
Q

what weight are lambs uually slaughtered

A

around 40kg

32
Q

carcase classification target

A

E U R
1 2 3L

33
Q

shearing cost to farmer

A

£0.90-1.00/heep

34
Q

how much do farmers get paid per fleece

A

£0.50-£3.00/ per fleece

35
Q

how much milk does a sheep produce in a day

A

1.2 litres twice a day ( 2-3 litre/day)

36
Q

dairy breeds

A
  • fresland
  • british milk sheep