Module 4 Flashcards

Nutrition of Grazing Animals

1
Q

What are DSE requirement of weaned sheep

A

1

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2
Q

What are DSE requirement of dry/early sheep

A

1

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3
Q

What are DSE requirement of late pregnant sheep

A

1.5

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4
Q

What are DSE requirement of lactating sheep

A

2.5

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5
Q

What are DSE requirement of rams

A

2

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6
Q

What are DSE requirement of weaner/yearlings cattle

A

8

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7
Q

What are DSE requirement of steer/bullocks/beef cow

A

8

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8
Q

What are DSE requirement of dry/early pregnant cattle

A

8

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9
Q

What are DSE requirement of late pregnant cattle

A

10

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10
Q

What are DSE requirement of lactating cattle

A

15

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11
Q

What are DSE requirement of milking cattle

A

23

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12
Q

What are DSE requirement of bulls

A

15

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13
Q

What are crude protein requirement of weaner/yearlings cattle/sheep

A

12%

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14
Q

What are crude protein requirement of dry/early pregnant sheep

A

6%

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15
Q

What are crude protein requirement of late pregnant sheep

A

8%

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16
Q

What are crude protein requirement of lactating sheep/cattle

A

12%

17
Q

What are crude protein requirement of milking dairy cow

A

18%

18
Q

What are crude protein requirement of bulls

A

10%

19
Q

What are crude protein requirement of steer

A

12%

20
Q

What are crude protein requirement of late pregnant sheep

A

9%

21
Q

What Affects ME Intake

A
Feed availability (kg DM/ha) 
Animal factors
Energy (MJ ME/kg DM) 
Protein (% CP) 
Climate
22
Q

Pasture Factors

A
Quantity = ‘feed availability’ 
Quality = ME, % CP
23
Q

What is the kg DM/ha of 1cm, 3cm, 5cm, 9cm, 12cm

A

500, 1000, 1500, 2000, 2500

24
Q

Why cant animals eat more if the quality of feed go down

A

because it needs time to digest, and graze because of the bite size as well. This prevent them to intake anymore food

25
Q

Which part of the year have the highest digestibility grass

A

April-Nov

26
Q

Which part of the year have the lowest digestibility grass

A

Jan-Mar

27
Q

What is the Maximal intake of cattle or sheep

A

2-3% of normal bodyweight (cattle sheep)

28
Q

What impact does the hot weather have

A

Eating less, finding shelter cooling down

29
Q

What the the pasture digestibility of high quality grass

A

75%, 11.2 MJ/kg DM. 1000 for dry cows

30
Q

What the the pasture digestibility of medium quality grass

A

68%, 10.1 MJ/kg DM

31
Q

What the the pasture digestibility of low quality grass

A

60%, 9 MK/kg DM, 2600 for dry cows

32
Q

What is one grazing system

A

Rotational grazing : paddocks rested to re-grow pasture; current paddock grazed at high stocking rate to eat maximum quantity of pasture

33
Q

What can happen when too much soluble carbohydrate(grain) are consumed

A

causes overgrowth of undesirable bacteria in rumen (cattle, sheep) or hindgut (horses)

➜ Lactic acidosis/‘grain poisoning’!

34
Q

What are the rules for feeding grains

A

–  Ruminants: introduce grain over 2-3 weeks, starting with 50 (S)/ 500 (C) g/head/day •  10-30% fibre keeps rumen healthy but lowers dietary ME
–  Horses: avoid diets > 50% grain & introduce large quantities over several days