1955
DOI: 10.3168/jds.s0022-0302(55)95008-6
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Manganese in the Nutrition of Young Dairy Cattle Fed Different Levels of Calcium and Phosphorus

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Cited by 29 publications
(5 citation statements)
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“…In contrast to earlier reports in calves (Hawkins et al 1955) and sheep and cows (Blakemore et al 1937), it was found in this study that increasing the dietary levels of Mn did not influence the plasma Mg levels in the sheep. No change in the blood haematocrit values was observed, although Hartman et al (1955) reported that high levels of dietary Mn decreased the concentration of haemoglobin and serum Fe in lambs fed a diet adequate in Fe after they had previously been made anaemic or fed an Fe-deficient diet.…”
Section: Discussioncontrasting
confidence: 99%
“…In contrast to earlier reports in calves (Hawkins et al 1955) and sheep and cows (Blakemore et al 1937), it was found in this study that increasing the dietary levels of Mn did not influence the plasma Mg levels in the sheep. No change in the blood haematocrit values was observed, although Hartman et al (1955) reported that high levels of dietary Mn decreased the concentration of haemoglobin and serum Fe in lambs fed a diet adequate in Fe after they had previously been made anaemic or fed an Fe-deficient diet.…”
Section: Discussioncontrasting
confidence: 99%
“…Previous research has indicated that calcium and phosphorus may play a pivotal role in Mn status. Diets containing monocalcium phosphate reduced circulating Mn concentrations in growing dairy calves compared with diets that did not contain monocalcium phosphate [ 47 ]. Although this research was conducted in growing animals, this potential reduction in Mn may have a detrimental impact on reproduction, such as reduced conception rates and fertility.…”
Section: Maternal Production and Healthmentioning
confidence: 99%
“…As has been shown for lead, calcium supplementation reduces manganese uptake, enhances its fecal excretion, and decreases its concentration in the blood and liver (Johnson and Kies, 1989). Mn absorption is inhibited by a high load of dietary calcium in several animal species (Hawkins et al, 1955;Van Barneveld and Van den Hamer, 1985;Smith and Kabaija, 1986) as in man (Greger et al, 1977;Freeland-Graves and Lin, 1991), but this effect has occasionally not been observed (Spencer et al, 1979). Manganese uptake by brush border intestinal vesicles is also markedly inhibited by iron, cobalt and zinc (Kabata et al, 1989).…”
mentioning
confidence: 99%