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<blockquote data-quote="Nesikep" data-source="post: 1798528" data-attributes="member: 9096"><p>I used to have trace mineral problems, I noticed it in one particularly high producing cow, if she was around the bull shortly after calving she'd breed right back, if she was exposed 4 months after calving she'd have a terrible time conceiving.. so I started to do research because it sounded like she was getting run down on SOMETHING. After studying all sorts of mineral deficiencies and how they manifest, I came up with Copper, Selenium and Phosphorus... then I got a blood test done and in fact she was TERRIBLY low on those (like 1/3rd what there ought to be as a minimum)</p><p>Now I had been feeding EXPENSIVE trace mineral salt blocks, and switched to loose mineral that is FORMULATED FOR MY AREA (<em>very key point</em>) This is why I don't put faith in brand names, I may be wrong, but I doubt Purina (aka Nestle) troubles themselves with getting it right for a small market. </p><p>My trace blocks were 100ppm Selenium and 2500mg/kg Copper, no phosphorus, and about 95% salt</p><p>My loose mineral is 100ppm Selenium and 2500mg/kg Copper, 18% phosphorus and very little salt.. Recommended consumption is 2-4oz/day/head.. In order to get the same amount of Se and Cu from a block, they'd have to consume 20 times as much, or about 1/10th of a salt block per day per cow.. so spend their whole day licking that block.. and they still wouldn't get any phosphorus.</p><p>Grain is high in phosphorus, but we don't feed any.. Milk (and bone) has lots of phosphorus in it, but it has to come from somewhere, You give the cow what she needs and you do get better growth in the calves, and a healthier cow.</p><p></p><p>I also tailor my mineral to the season, I have a high selenium with lower phosphorus mineral for before calving, and a lower selenium high phosphorus mineral for after calving, I still use the odd salt block, usually after weaning when the cows are on holidays.</p><p></p><p>Want to know if your area is high or low in selenium? <a href="https://pubs.usgs.gov/sir/2017/5118/sir20175118_element.php?el=34" target="_blank">https://pubs.usgs.gov/sir/2017/5118/sir20175118_element.php?el=34</a></p></blockquote><p></p>
[QUOTE="Nesikep, post: 1798528, member: 9096"] I used to have trace mineral problems, I noticed it in one particularly high producing cow, if she was around the bull shortly after calving she'd breed right back, if she was exposed 4 months after calving she'd have a terrible time conceiving.. so I started to do research because it sounded like she was getting run down on SOMETHING. After studying all sorts of mineral deficiencies and how they manifest, I came up with Copper, Selenium and Phosphorus... then I got a blood test done and in fact she was TERRIBLY low on those (like 1/3rd what there ought to be as a minimum) Now I had been feeding EXPENSIVE trace mineral salt blocks, and switched to loose mineral that is FORMULATED FOR MY AREA ([I]very key point[/I]) This is why I don't put faith in brand names, I may be wrong, but I doubt Purina (aka Nestle) troubles themselves with getting it right for a small market. My trace blocks were 100ppm Selenium and 2500mg/kg Copper, no phosphorus, and about 95% salt My loose mineral is 100ppm Selenium and 2500mg/kg Copper, 18% phosphorus and very little salt.. Recommended consumption is 2-4oz/day/head.. In order to get the same amount of Se and Cu from a block, they'd have to consume 20 times as much, or about 1/10th of a salt block per day per cow.. so spend their whole day licking that block.. and they still wouldn't get any phosphorus. Grain is high in phosphorus, but we don't feed any.. Milk (and bone) has lots of phosphorus in it, but it has to come from somewhere, You give the cow what she needs and you do get better growth in the calves, and a healthier cow. I also tailor my mineral to the season, I have a high selenium with lower phosphorus mineral for before calving, and a lower selenium high phosphorus mineral for after calving, I still use the odd salt block, usually after weaning when the cows are on holidays. Want to know if your area is high or low in selenium? [URL]https://pubs.usgs.gov/sir/2017/5118/sir20175118_element.php?el=34[/URL] [/QUOTE]
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