Practical nutrition Flashcards

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1
Q

List the ‘four diets’ of a cow that should all be the same

A

Diet cows require
Diet formulated by nutritionist
Diet mixed by farmer
Diet received / eaten by the cows

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2
Q

Describe a traditional feeding system for lactating cows

A

Silage at barrier & cake in parlour
Grazing in summer & cake in parlour

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3
Q

Describe a total mixed ration feeding system for lactating cows

A

All food at barrier – 24 hours/day – ad lib
“complete diet”

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4
Q

Describe a hybrid feeding system for lactating cows

A

Partial mixed ration at barrier & cake in parlour
Out of parlour feeders

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5
Q

Which diet feeding system for lactating cows encourages maximal DMI?

A

Total mixed ratio ad-lib

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6
Q

Which diet feeding system for lactating cows may lead to peaks of acidity after meals?

A

Traditional feeding

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7
Q

What are the advantages of a hybrid feeding system for lactating cows?

A
  • Accurate rationing
  • Resources focused on peak yielding cows
  • Can feed enough energy to very high yielders
  • Doesn’t overfeed low yielders
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8
Q

What are the disadvantages of a hybrid feeding system for lactating cows?

A
  • if fed in the parlour they may eat less at the barrier = substitution
  • if they eat less at the barrier they get less long fibre
  • leads to less rumination and buffering of rumen
  • SARA
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9
Q

How can nutritional status be monitored?

A

BCS and observation
Milk quality
Biochemistry profiles

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10
Q

List come correction factors for DMI

A
  • Complete diet (TMR)
  • Out of parlour feeder
  • Mixed forages
  • Breed
  • Heifers with cows
  • Self-feed silage
  • Poorly preserved silage
  • Week of lactation
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11
Q

Describe factors to consider when assessing feed access

A
  • Minimise stress / competition for feed and water
  • Feed barrier or trough space vital
  • 24 hour access
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