The hormone injected to cows for excessive milk production is

Oestrogen

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Progesterone

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Oxytocin

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Testosterone

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Solution

The correct option is C Oxytocin
Oxytocin helps in lactation in the cattle. The breeds of cattle that are reared for milk production on a commercial scale are injected with the hormone oxytocin to secrete more milk. This hormone causes contraction of the mammary glands to secrete and also allows ejection of milk
So, the correct answer is 'Oxytocin'

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