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Relationship between parity and mineral status in dairy cows during the periparturient period

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Data from 65 cows were collected to clarify the relationship between parity and mineral status in Holstein cows during the periparturient period. Milk fever occurred in a second- and a fourth-lactation cow at parturition. Bodyweight of cows decreased immediately after parturition, and the decreased weights of cows from 1 to 6 days after parturition ranged from 11 to 27 kg. Milk yield of multiparous cows was higher than that of primiparous cows, but Ca and P concentrations in colostrum were not affected by the parity. Plasma glucose of primiparous cows was higher than that of multiparous cows, and plasma nonesterified fatty acids of fourth-and-more-lactation cows at parturition was highest. Plasma Ca concentration of cows at parturition decreased with advancing parity, and plasma inorganic P concentration of third-and-more-lactation cows was lowest at parturition. Plasma parathyroid hormone of fourth-and-more-lactation cows at parturition was highest, but plasma hydroxyproline and alkaline phosphatase was lowest. These results suggest that the large transfer of Ca and P to colostrum is a factor in the development of milk fever in third-and-more-lactation cows.
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Keywords: colostrum; dairy cows; milk fever; mineral status; parity

Document Type: Research Article

Affiliations: National Agricultural Research Center for Hokkaido Region, Toyohira-ku, Sapporo-shi, Japan

Publication date: June 1, 2003

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