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Which of the following will not help milk let-down in a lactating dairy cow?

Which of the following will not help milk let-down in a lactating dairy cow?
  • A.
    injection of oxytocin
  • B.
    presence of calf
  • C.
    provision of feed
  • D.
    injection of progesterone
  • E.
    presence of a milker.
Correct Answer: Option D
Explanation