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Cattle Boards
Grasses, Pastures & Hay
Another Hybrid Pearl millet Question
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<blockquote data-quote="edrsimms" data-source="post: 669603" data-attributes="member: 10970"><p>Well, If you have 100 acres that can be tilled -- there is your answer. </p><p></p><p><strong>Ya know these scientist types have done every experiment on a cow there is -- enough to know that a cow will consume 3.5 lbs of forage an hour.</strong></p><p></p><p>If a 1300 lb cow is nursing a calf that is 2-3 Months (Peak Milk) and her total protein requirement is <strong>2.50</strong> these are the numbers:</p><p>1300 x 2.8% = ~ 36 lbs total per day of something.</p><p>Summer</p><p><u>Feed Values</u></p><p>Millet = 20 % CP x 70 % TDN = 0.140</p><p>Crabgrass = 12 % CP x 55 % TDN = 0.066</p><p>Fescue = 8 % CP x 50 % TDN = 0.040 (summer)</p><p></p><p>Millet Limit grazed 5 hours per day = 3.5 x 5 = 18 x 0.140 = <strong>2.52 TP</strong>. Done</p><p>Grazing Crabgrass all day = 36 x .066 = <strong>2.37 TP</strong> (she can't do it)</p><p>Grazing Fescue cured on the stem 36 x 0.040 = 1.44 TP (not even close)</p><p></p><p>For February calvers: </p><p>Normally, we can graze 8 cow/calf pairs per acre in June on Millet (this is limit grazed where we only allow them to graze it for 5 hrs).</p><p></p><p>For October calvers: (weaned calves in May) TP requirement of 1.6</p><p>3-4 hours per day depending on BCS post weaning</p></blockquote><p></p>
[QUOTE="edrsimms, post: 669603, member: 10970"] Well, If you have 100 acres that can be tilled -- there is your answer. [b]Ya know these scientist types have done every experiment on a cow there is -- enough to know that a cow will consume 3.5 lbs of forage an hour.[/b] If a 1300 lb cow is nursing a calf that is 2-3 Months (Peak Milk) and her total protein requirement is [b]2.50[/b] these are the numbers: 1300 x 2.8% = ~ 36 lbs total per day of something. Summer [u]Feed Values[/u] Millet = 20 % CP x 70 % TDN = 0.140 Crabgrass = 12 % CP x 55 % TDN = 0.066 Fescue = 8 % CP x 50 % TDN = 0.040 (summer) Millet Limit grazed 5 hours per day = 3.5 x 5 = 18 x 0.140 = [b]2.52 TP[/b]. Done Grazing Crabgrass all day = 36 x .066 = [b]2.37 TP[/b] (she can't do it) Grazing Fescue cured on the stem 36 x 0.040 = 1.44 TP (not even close) For February calvers: Normally, we can graze 8 cow/calf pairs per acre in June on Millet (this is limit grazed where we only allow them to graze it for 5 hrs). For October calvers: (weaned calves in May) TP requirement of 1.6 3-4 hours per day depending on BCS post weaning [/QUOTE]
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