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<blockquote data-quote="smnherf" data-source="post: 660918" data-attributes="member: 3235"><p>I had hoped to see more interest in this topic too, but it is pretty new to most people.</p><p></p><p>I have had a couple years worth of RFI testing on my bull crop and I would have to agree with RSL. Selecting for RFI isn't any different than single trait selecting for any trait. </p><p></p><p>This past year, a group of us put together about 100 Hereford and Angus bulls and fed a high roughage ration desinged to gain about 2.75lbs per day. Mostly was haylage, corn, straw and supplement pellets. </p><p></p><p>The 2nd high gaining bull of mine gained 3.91 lbs per day but he ate 36.65 lbs of feed per day to do it and ranked near the bottom on RFI. Another bull of mine ate 21.96 lbs per day but still gained 3.27 lbs per day to rank right at the top for RFI. Another bull ate 35 lbs per day but only gained 2.77 lbs per day. Some of the poorest gaining bulls ranked fairly high for RFI, but many of the top gaining bulls ranked toward the bottom half. </p><p></p><p>Its appearing to me that picking these super high gaining bulls out of the bull tests may actually be picking just a bunch of big pigs that eat a lot.It sure looks like with proper selection reducing feed costs by 25% with no change in performance is possible. </p><p></p><p>Brian</p></blockquote><p></p>
[QUOTE="smnherf, post: 660918, member: 3235"] I had hoped to see more interest in this topic too, but it is pretty new to most people. I have had a couple years worth of RFI testing on my bull crop and I would have to agree with RSL. Selecting for RFI isn't any different than single trait selecting for any trait. This past year, a group of us put together about 100 Hereford and Angus bulls and fed a high roughage ration desinged to gain about 2.75lbs per day. Mostly was haylage, corn, straw and supplement pellets. The 2nd high gaining bull of mine gained 3.91 lbs per day but he ate 36.65 lbs of feed per day to do it and ranked near the bottom on RFI. Another bull of mine ate 21.96 lbs per day but still gained 3.27 lbs per day to rank right at the top for RFI. Another bull ate 35 lbs per day but only gained 2.77 lbs per day. Some of the poorest gaining bulls ranked fairly high for RFI, but many of the top gaining bulls ranked toward the bottom half. Its appearing to me that picking these super high gaining bulls out of the bull tests may actually be picking just a bunch of big pigs that eat a lot.It sure looks like with proper selection reducing feed costs by 25% with no change in performance is possible. Brian [/QUOTE]
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