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More cows vs. Big cows
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<blockquote data-quote="WarEagle73" data-source="post: 1031279" data-attributes="member: 19171"><p>If you look at the Beef NRC Tables, that is actually the inverse of what they indicate. </p><p></p><p>For example:</p><p>1000 lb. Cow 2 months post calving weaning a 500lb calf needs a diet with 60.9% TDN and 11.2% CP</p><p>1200 lb. Cow 2 months post calving weaning a 600lb calf needs a diet with 63.2% TDN and 12.2% CP</p><p>On top of that, the larger cow requires an additional 5.6 lb DM/day.</p><p></p><p>Now I realize that these are tables and averages, but my point is that generalities about size and weight are averages at best. In my limited experience, cattle that have above average capacity for their frame score tend to be more efficient for the same reasons you listed (added volume for more feed). I am becoming less a believer in smaller cows and more a believer in cows that work in your environment. If a cow can wean over 50% of her body weight, get bred back early in the season and calve unassisted (as long as <em><strong>I </strong></em>don't screw any of that up) she can stay as long as she maintains that on grass and hay with little to no supplements.</p></blockquote><p></p>
[QUOTE="WarEagle73, post: 1031279, member: 19171"] If you look at the Beef NRC Tables, that is actually the inverse of what they indicate. For example: 1000 lb. Cow 2 months post calving weaning a 500lb calf needs a diet with 60.9% TDN and 11.2% CP 1200 lb. Cow 2 months post calving weaning a 600lb calf needs a diet with 63.2% TDN and 12.2% CP On top of that, the larger cow requires an additional 5.6 lb DM/day. Now I realize that these are tables and averages, but my point is that generalities about size and weight are averages at best. In my limited experience, cattle that have above average capacity for their frame score tend to be more efficient for the same reasons you listed (added volume for more feed). I am becoming less a believer in smaller cows and more a believer in cows that work in your environment. If a cow can wean over 50% of her body weight, get bred back early in the season and calve unassisted (as long as [i][b]I [/b][/i]don't screw any of that up) she can stay as long as she maintains that on grass and hay with little to no supplements. [/QUOTE]
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