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Where replacements are retained from within the flock, selection should take place before significant drafting has taken place to prevent the poorest performing sheep from being retained.
It is advisable to provisionally select a higher number than is required, as this will allow further selection at a future date and drafting of animals that have not performed as anticipated.
Where animals will continue to be run with the main flock of lambs, it is important to use permanent identification, for example tagging.
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