Manganese
- Thread starter dun
- Start date
Nesikep
Well-known member
From the doc I compiled a while ago..
Manganese (Mn)
Manganese usefulness in the body is as a constituent of the enzymes pyruvate carboxylase, arginase, and superoxide dismutase and as an activator for many other enzymes, including hydrolases, kinases, transferases, and decarboxylases. Manganese is important for normal skeletal development, growth, and reproductive function.
At extremely high levels of manganese intake, growth performance and feed intake are reduced.
Cattle deficient in manganese exhibit skeletal abnormalities, including stiffness, twisted legs, joint enlargement, and weak bones in young cattle. Older cattle display depressed or irregular estrus, low conception rate, abortion, stillbirths, and light birth weights when manganese intake is inadequate. Forage manganese levels vary with plant species, soil pH, and soil drainage, but forages usually contain adequate manganese levels. Corn silage manganese content is generally low. Feed-grade manganese forms include manganese sulfate, manganese oxide, manganese methionine, manganese proteinate, manganese polysaccharide complex, and manganese amino acid chelate. Bioavailability ranking from most to least available is manganese methionine, manganese sulfate, and, lastly, manganese oxide. A recommended manganese level is 2000 ppm in a 4-ounce daily intake mineral supplement.
Manganese deficiency, although not reported often, is identified routinely in dairy cattle when tested. Of interest is the fact that most testing of beef cattle finds normal manganese concentrations in liver, blood, and serum, but in these same matrices, greater than 50%, 75%, and 95%, respectively, of dairy cattle tested are below recommended normal concentrations (unpublished data). This may, in part, be due to high calcium and phosphorous concentrations in dairy rations, which can be antagonistic to the bioavailability of manganese.
Of the samples available, liver is the most indicative of whole body status, followed by whole blood, and then serum. As red blood cells have higher manganese concentration than serum, hemolysis can result in increased serum concentration. Since the normal serum concentration of manganese is quite low, many laboratories do not offer this analysis because of inadequate sensitivity. Overall, response to supplementation has frequently been used as a means of verifying manganese deficiency, but it is critical that a bioavailable form be utilized.
Manganese (Mn)
Manganese usefulness in the body is as a constituent of the enzymes pyruvate carboxylase, arginase, and superoxide dismutase and as an activator for many other enzymes, including hydrolases, kinases, transferases, and decarboxylases. Manganese is important for normal skeletal development, growth, and reproductive function.
At extremely high levels of manganese intake, growth performance and feed intake are reduced.
Cattle deficient in manganese exhibit skeletal abnormalities, including stiffness, twisted legs, joint enlargement, and weak bones in young cattle. Older cattle display depressed or irregular estrus, low conception rate, abortion, stillbirths, and light birth weights when manganese intake is inadequate. Forage manganese levels vary with plant species, soil pH, and soil drainage, but forages usually contain adequate manganese levels. Corn silage manganese content is generally low. Feed-grade manganese forms include manganese sulfate, manganese oxide, manganese methionine, manganese proteinate, manganese polysaccharide complex, and manganese amino acid chelate. Bioavailability ranking from most to least available is manganese methionine, manganese sulfate, and, lastly, manganese oxide. A recommended manganese level is 2000 ppm in a 4-ounce daily intake mineral supplement.
Manganese deficiency, although not reported often, is identified routinely in dairy cattle when tested. Of interest is the fact that most testing of beef cattle finds normal manganese concentrations in liver, blood, and serum, but in these same matrices, greater than 50%, 75%, and 95%, respectively, of dairy cattle tested are below recommended normal concentrations (unpublished data). This may, in part, be due to high calcium and phosphorous concentrations in dairy rations, which can be antagonistic to the bioavailability of manganese.
Of the samples available, liver is the most indicative of whole body status, followed by whole blood, and then serum. As red blood cells have higher manganese concentration than serum, hemolysis can result in increased serum concentration. Since the normal serum concentration of manganese is quite low, many laboratories do not offer this analysis because of inadequate sensitivity. Overall, response to supplementation has frequently been used as a means of verifying manganese deficiency, but it is critical that a bioavailable form be utilized.
TexasBred
Well-known member
Reproductive performance and fetal development
Nesikep
Well-known member
no problem :)
