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Nutrition Final: A > Feeding and nutrition of lambs and growing sheep > Flashcards

Feeding and nutrition of lambs and growing sheep Flashcards

1
Q

Goals of sheep nutrition

A
  1. Incr repro
  2. Rearing of lambs
  3. meat prod
  4. milk prod
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2
Q

Nutrient requirements of sheep (6)

A
  1. DM
  2. E as NEm
  3. Metabolisable protein (maint)
  4. CF
  5. Minerals
  6. Vitamins
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3
Q

Sheep: DM

A

2.5-6kg per 100kgBW

Roughly 3.5kg

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4
Q

Sheep: E as NEm

A

Adults: 0.31 MJ x BW to the power of 0.75

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5
Q

Sheep: metabolizable protein (maint)

A

2.6 x W to the power of 0.75

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6
Q

Sheep: CF

A

15-20%

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7
Q

Sheep: minerals (6)

A

Fe, Mn, Zn, Cu, I, Se

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8
Q

Sheep: vitamins:

A

A for maturing ewes

E for suckling lambs

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9
Q

Timeline (5)

A
  • Nov: insem
  • April: lambing
  • July: weaning
  • Oct: flushing
  • Nov: insem
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10
Q

4 pieces of key info for ewes

A

Pregnancy

Lactation

Ovarian cycle

Rest period

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11
Q

Ewe length of pregnancy

A

136-155 days

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12
Q

ewe length of lactation

A

3-4 mnths

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13
Q

ewe: ovarian cycle

A

16 days

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14
Q

ewes rest period:

A

3 mnths- after this “tupping” takes place

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15
Q

Key info for the lamb (4)

A

BW at birth

Weaning age

Weaning weight

Insem age

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16
Q

lamb: BW at birth

A

2.5-6kg

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17
Q

Weaning age:

A

30-40 days

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18
Q

weaning weight

19
Q

Insem age

20
Q

Nutrition of mothering ewes (3)

A
  • Time when the nutrient requirement is higher in the form of conc
  • BCS
  • Flushing
21
Q

Mothering ewes: time when the nutrient requirement is higher in the form of conc

A
  1. Flushing
  2. Last 6 wks of preg
  3. Milk prod
22
Q

Mothering ewes: BCS

A

Measured before mating and at the end of preg

Optimal=3

23
Q

Mothering ewes: flushing

A
  • 2-3 wks before mating
  • Roughages + 0.3-0.4kg of conc (rye or wheat)
  • P
  • Carotene
24
Q

Nutrition of pregnant ewes (3)

A

Month 4: +30% NEm

Month 5: +50% NEm

6wks before partuition: 0.3-0.5kg of conc

25
Q

Nutrition of lactating ewes (3)

A

CF: 18-23%

During wk 3-5: there is NEB

0.2-0.3kg of conc and hay

26
Q

Milk composition of sheep

A

DM: 200g/kg

Fat: 80g

Protein: 60g

27
Q

Feeding of ewes during weaning

A
  • 1 wk before: NO conc
  • 1 day before: NO feed or water
  • After weaning: water and roughages
28
Q

Methods of lamb rearing (2)

A
  • Natural lamb feeding technology
  • Artificial lamb rearing
29
Q

Natural lamb feeding technology

A
  • 200g BWG per 1kg of ewe milk
  • 2 wks: good quality grass hay
  • Weaning at 4-6 wks: 0.2-0.3kg of hay and 0.3-0.4kg of starter conc
30
Q

Artificial lamb rearing

A

In high repro breeds

After colostrum ad lib homogenised milk and milk replacers

31
Q

Methods of fattening lambs

A
  1. Fattening suckling lambs
  2. Fattening of express broiler lambs
  3. Growing lambs of high BW
32
Q

Fattening of suckling lambs

A

Until the ages of 8-9 wks

BW: 14-15kg

33
Q

Fattening of express brolier lambs

A

From weaning to 120/130 days

200-350 g daily weight gain

BW: 28-35kg

34
Q

Growing lambs of high BW

A

Weaning at 3 mnths: given high amnts of fat, roughage and conc

Daily gain is 100g for ewes and 150g for rams

BW: 40-50kg

35
Q

Ration for weaned lambs for breeding

A
  • 0.5kg of moist feed
  • 0.5kg hay
  • 0.5kg of pea straw
  • 1.2-1.3kg of conc
36
Q

7 different types of feed to discuss

A
  1. Green forages
  2. Silage
  3. Hays
  4. Hay meal
  5. Cereal by-products
  6. Beets and potatoes
  7. Seeds
  8. Concentrates
  9. Supplements
37
Q

Green forages

A

Pasture

Sugar beet

Cabbage

38
Q

Silage

A

GAS!

  • grass silage
  • alfalfa
  • sudan grass
39
Q

Hays

A

Meadow hay

Red clover

Sainfoin

40
Q

Hay meal

A

Alfalfa meal

41
Q

Cereal by-products

A

Corn starch

Pea straw

42
Q

Beets and potatoes

A

And carrots!

These are for pregnant ewes

Nutrition Final: A (28 decks)

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