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Estrone and Progesterone Plasma Levels of Normal Cows and Cows with Parturient Paresis
Plasmanivåer av östron och progesteron hos normala kor och hos kor med puerperal pares
Acta Veterinaria Scandinavica volume 15, pages 587–596 (1974)
Abstract
Blood plasma concentrations of estrone and progesterone, calcium and inorganic phosphorus were measured in 22 cows (Swedish Red and White Breed) from 4 weeks prepartum up to 6 days post partum. Ten cows with parturient paresis had Ca levels below 6 mg/100 ml. Data from plasma analyses in individual cows were grouped in the following periods: 28–22, 21–15, 14–8, 7–6, 5–4, 3, 2, 1 day(s) before parturition and 1, 2, 3–6 days after parturition. Statistical comparisons of the levels of the hormones and the ratio progesterone/estrone did not reveal any significant differences between the paretic and normal cows at any time period. The results do not support the theories that high systemic levels of estrogens or an imbalance between estrogen and progesterone predispose towards parturient paresis.
Sammanfattning
Koncentrationerna av östron, progesteron, Ca och oorg. P i blodplasma bestämdes på 22 SRB-kor från fyra veckor före partus till sex dagar efter partus. Tio av korna fick puerperal pares med plasma-Ca under 6 mg/100 ml. Resultaten av plasmaanalyserna från enskilda kor sammanfördes inom följande tidsperioder: 28–22, 21–15, 14–8, 7–0, 5–4, 3, 2, 1 dagar före partus och 1, 2, 3–6 dagar efter partus. Statistiska jämförelser av hormonnivåer liksom av kvoterna progesteron/ Östrogen visade inga signifikanta avvikelser vid någon period. Undersökningens resultat stöder ej teorierna om en hog östrogennivå eller en inbalans mellan östrogen och progesteron som predisponerande för puerperal pares hos nötkreatur.
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Supported by grants from the Swedish Council for Forestry and Agricultural Research.
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Edqvist, L.E., Ekman, L., Gustafsson, B. et al. Estrone and Progesterone Plasma Levels of Normal Cows and Cows with Parturient Paresis. Acta Vet Scand 15, 587–596 (1974). https://doi.org/10.1186/BF03547228
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DOI: https://doi.org/10.1186/BF03547228