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Culling
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<blockquote data-quote="NVS1" data-source="post: 1613434" data-attributes="member: 39442"><p>Make sure your vet is using a larger probe relative to the one used to test yearlings. The smaller probe does not work well for bigger more mature bulls and fails to stimulate them giving them a false negative result. I always take mature bulls that fail and have them mount an in heat cow in the alley and have the vet catch droplets of semen as they dismount. A high percentage of the bulls were found satisfactory with this second collection.</p></blockquote><p></p>
[QUOTE="NVS1, post: 1613434, member: 39442"] Make sure your vet is using a larger probe relative to the one used to test yearlings. The smaller probe does not work well for bigger more mature bulls and fails to stimulate them giving them a false negative result. I always take mature bulls that fail and have them mount an in heat cow in the alley and have the vet catch droplets of semen as they dismount. A high percentage of the bulls were found satisfactory with this second collection. [/QUOTE]
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