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Livestock
Livestock & Forage
Performance recorded sheep.
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<blockquote data-quote="neilo" data-source="post: 8269746" data-attributes="member: 348"><p>The whole idea of ebvs is that it takes out the management effects of feeding, or the early lambing date that sponges and PMSG will give you. High levels of feeding will give you high actual weights but not necessarily high scan weight ebvs. Similarly, the ebvs will highlight superior genetics while not having massive 'actual' measurements, which can obviously be heavily influenced by feeding management. </p><p>As an example, there were Charollais lambs at our Premier Sale that had scan weights of 90kg+ and muscle depths of up to 44mm, but very average ebvs, showing that the performance was entirely down to good management. </p><p>We don't get anywhere near those actual measurements now everything is March born and forage fed, yet our ebvs are considerably higher across the board.</p><p></p><p>I do agree that some breeders, in all breeds, have chased index. It's just a useful breeding tool, to be used alongside the stockman's eye & hands. Nothing more.</p></blockquote><p></p>
[QUOTE="neilo, post: 8269746, member: 348"] The whole idea of ebvs is that it takes out the management effects of feeding, or the early lambing date that sponges and PMSG will give you. High levels of feeding will give you high actual weights but not necessarily high scan weight ebvs. Similarly, the ebvs will highlight superior genetics while not having massive 'actual' measurements, which can obviously be heavily influenced by feeding management. As an example, there were Charollais lambs at our Premier Sale that had scan weights of 90kg+ and muscle depths of up to 44mm, but very average ebvs, showing that the performance was entirely down to good management. We don't get anywhere near those actual measurements now everything is March born and forage fed, yet our ebvs are considerably higher across the board. I do agree that some breeders, in all breeds, have chased index. It's just a useful breeding tool, to be used alongside the stockman's eye & hands. Nothing more. [/QUOTE]
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Performance recorded sheep.
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