27: Beef population medicine Flashcards

1
Q

How long is the breeding season?

A

9-12 week

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2
Q

What % of costs does feeding make up?

A

75%

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3
Q

Does sexual maturity relate to weight or age?

A

Weight

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4
Q

What is the usual age of maturity?

A

5-6 years

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5
Q

By what day should conception be to ensure 365 day calving interval?

A

80 days

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6
Q

How many cows can young bulls serve?

A

20-30

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7
Q

How many cows can older bulls serve?

A

40-50

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8
Q

How long before breeding season should BSE be?

A

4-6 weeks

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9
Q

What should scrotal circumference be?

A

34cm

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10
Q

What should BCS be for the bull?

A

3-3.5

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11
Q

What are four problems with difficult calvings?

A

Delayed return to oestrus, can be infertile, spreads calving pattern, increases replacement rate

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12
Q

What should you do if more than one assisted calving?

A

Cull

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13
Q

Why do late-calving cows get more dystocia?

A

Over-fed

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14
Q

WHich causes of calf scours can be vaccinated against?

A

BVD, E Coli, rotavirus, coronavirus, Salmonella

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15
Q

Which causes of calf pneumonia can be vaccinated against?

A

BVD, IBR, PI3, RSV, Pasteurella

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16
Q

What age is finishing usually?

A

12-24 months

17
Q

What are the three beef systems?

A

Cereal, grass/cereal, grass

18
Q

Above how many cattle slaughtered per week must an abattoir classify by EUROP?

A

75