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A new way to study cow profitability?
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<blockquote data-quote="cypressfarms" data-source="post: 618628" data-attributes="member: 2653"><p>Here's another weird side affect to throw into the equation:</p><p></p><p>per:</p><p></p><p><a href="http://www.ext.vt.edu/news/periodicals/livestock/aps-05_02/aps-398.html" target="_blank">http://www.ext.vt.edu/news/periodicals/ ... s-398.html</a></p><p></p><p>There is a critical temperature where when below, a cow's energy requirements increase. No surprise for anyone right? However, a 1000 pound cow requires 10% more energy than a 1300 pound cow below this level. The web article shows low critical temps for all seasons, which when the temp falls below will require added energy intake for the cow to maintain. Easy to understand how people in the north would prefer bigger cows. However, even down in the deep south we do occasionaly dip below the listed low critical temp. So in this scenario, a 900 pound cow would require a higher percentage of her weight to maintain than a 1300 pounder.</p><p></p><p>Been also doing some research on the added costs of bigger cows for me. 1300 vs 900</p><p></p><p>This is all for one 1300 pound cow vs one 900 pound cow:</p><p>-would cost $15 more a year for Ivomec per.</p><p>-would consume 800 pounds more of hay each winter (I feed about 100 days tops, calculating 2% per day)</p><p>-Not sure about mineral consumption </p><p></p><p>The quest continues....</p></blockquote><p></p>
[QUOTE="cypressfarms, post: 618628, member: 2653"] Here's another weird side affect to throw into the equation: per: [url=http://www.ext.vt.edu/news/periodicals/livestock/aps-05_02/aps-398.html]http://www.ext.vt.edu/news/periodicals/ ... s-398.html[/url] There is a critical temperature where when below, a cow's energy requirements increase. No surprise for anyone right? However, a 1000 pound cow requires 10% more energy than a 1300 pound cow below this level. The web article shows low critical temps for all seasons, which when the temp falls below will require added energy intake for the cow to maintain. Easy to understand how people in the north would prefer bigger cows. However, even down in the deep south we do occasionaly dip below the listed low critical temp. So in this scenario, a 900 pound cow would require a higher percentage of her weight to maintain than a 1300 pounder. Been also doing some research on the added costs of bigger cows for me. 1300 vs 900 This is all for one 1300 pound cow vs one 900 pound cow: -would cost $15 more a year for Ivomec per. -would consume 800 pounds more of hay each winter (I feed about 100 days tops, calculating 2% per day) -Not sure about mineral consumption The quest continues.... [/QUOTE]
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