Gundog bandaged up, trussed and kept quiet (5,3,6)

I believe the answer is:

bound and gagged

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'gundog bandaged up trussed' is the definition.
I know nothing about this answer so I can't tell whether this works.

'and kept quiet' is the wordplay.
I cannot really see how this works, but
an anagram of 'and' is 'nda' which is located in the answer.
This explanation may well be incorrect...

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I've seen this clue in The Independent.

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