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<blockquote data-quote="regolith" data-source="post: 899923" data-attributes="member: 9267"><p>All dairy cattle in NZ are indexed against a common base... average NZ dairy cow born in 2000 I think it is right now.</p><p>Whether you think it works or not depends on what your aims are. I read the proofs with a chart alongside showing the average for that breed. Apparently beef cattle are included too... because if I use an Angus or Hereford AI bull there's a dairy 'breeding worth' attached to the bull.</p><p></p><p>The 'catch-up' changes in the base cow (from 1985 to 2000 via about three adjustments in five years) are very unhelpful. Overnight no-one knows what anyone else is talking about because all the numbers have changed.</p><p>My breeding company printing out the average indexes for each breed group within my herd is helpful... it confirms that I'm going in the direction I want to be going in.</p></blockquote><p></p>
[QUOTE="regolith, post: 899923, member: 9267"] All dairy cattle in NZ are indexed against a common base... average NZ dairy cow born in 2000 I think it is right now. Whether you think it works or not depends on what your aims are. I read the proofs with a chart alongside showing the average for that breed. Apparently beef cattle are included too... because if I use an Angus or Hereford AI bull there's a dairy 'breeding worth' attached to the bull. The 'catch-up' changes in the base cow (from 1985 to 2000 via about three adjustments in five years) are very unhelpful. Overnight no-one knows what anyone else is talking about because all the numbers have changed. My breeding company printing out the average indexes for each breed group within my herd is helpful... it confirms that I'm going in the direction I want to be going in. [/QUOTE]
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