Dairy Cattle Husbandry

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15 Terms

1
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What age are calves weaned

6-12 weeks when rumen is fully developed.

2
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what age to cows reach puberty

10-12 months

3
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when are cows served the first time

15 months, when 65% of mature body weight

4
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what age do cows first calve

24 months

5
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how long is a cows gestation

9 months (282 days)

6
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how long is the VWP after calving and why?

Voluntary Waiting period of 6ish weeks to wait for it to show heat, regain any weight lost and maintain a 12 months calving cycle.

7
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how long do cows lactate for

305 days

8
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how many liters per day will one cow produce at peak

40 l

9
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How many dairy farms UK

7,200

10
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Averge herd size UK

170

11
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Average milk yeild per cow per year

8,200

12
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How long is a cows Oestrus cycle

21 days

13
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how long is a cow in oestrus for

15 h

14
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behavioural signs of oestrus

ā€¢ Sniffing & chin resting
ā€¢ Restless & increased activity
ā€¢ Flehmen reaction
ā€¢ Rump & flank rubbing
ā€¢ Mounting (esp. head & neck of other cows)
ā€¢ Clear mucus handing from vulva (ā€œbulling stringā€)
ā€¢ Standing to be mounted
ā€¢ More often at night

15
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Adv / Dis Adv of straw yard

Advantages
ā€¢ Cow comfort / choice of lying position
ļ‚Æ Lameness
Disadvantages
ā€¢ Bedding: more required, less choice
ļ‚­ Higher mastitis risk