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Levels of Oestrone Sulphate during Pregnancy in Different Breeds of Cows and its Possible Association with Retained Foetal Membranes

Östronsulfatnivån under dräktigheten hos olika koraser samt dess eventuella samband med kvarbliven efterbörd

Acta Veterinaria Scandinavica volume 32, pages 183–188 (1991)Cite this article

Abstract

The levels of oestrone sulphate in plasma of pregnant cows was followed from 30 days of pregnancy until parturition. The Swedish Jersey Breed (SJB) showed significantly lower levels of oestrone sulphate between 101 and 200 days of pregnancy than either the Swedish Red and White (SRB) or the Swedish Lowland Breed (SLB). No significant difference was noted between SRB and SLB. On days 141–160 of gestation the oestrone sulphate values were still below the 10 nmol/l level for the SJB while they were above this level for the SRB and the SLB, and the difference was significant. In the SJB, levels above 10 nmol/1 were reached on days 161–180 of gestation.

In the second part of this study the levels of oestrone sulphate were measured around parturition in SRB cows. At parturition, the levels of oestrone sulphate rose to peak values of 79.9 ± 5.2 nmol/1 and then decreased to 6.6 ± 0.5 nmol/1 on the day after calving. In one cow peak values of 66.0 nmol/1 were reached 2 days prior to parturition, and subsequently dropped to 7.0 nmol/1 at parturition. This cow had retained foetal membranes. A possible relationship between low oestrone sulphate levels prior to parturition and retained foetal membranes is discussed.

Sammanfattning

Östronsulfatnivåerna i plasma följdes hos 23 kor av 3 olika raser från 30 dagars dräktighet till slutet av dräktigheten. Svenska jerseykor uppvisade signifikant lägre nivåer av ostronsulfat melian dag 141–200 och dag 241–280 jämfört med svensk röd och vit boskap och mellan dag 101-200 jämfört med svenska låglandskor. I intervallet 141–160 av dräktigheten var östronsulfatnivåerna fortfarande under 10 nmol/l för jerseykorna medan de hade passerat denna nivå för de andra raserna. Denna skillnad var signifikant. Jerseykorna uppnådde denna nivå i intervallet 161–180 dagars dräktighet.

I denna studies andra del mättes östronsulfatnivåerna vid tiden runt kalvningen hos svenska röda och vita kor. Vid kalvningen uppnåddes maximala koncentrationer av hormonet på 79,9 ±5,2 nmol/1 for att minska till 6,6 ± 0,5 nmol/1 en dag efter kalvningen. Hos en ko nåddes maximala värden på 66,0 nmol/1 2 dagar innan kalvningen och sjönk sedan till 7,0 nmol/1 på kalvningsdagen. Denna ko hade kvarbliven efterbörd. Sambandet mellan låga östronsulfatnivåer omedelbart innan kalvningen och kvarbliven efterbörd diskuteras.

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Authors and Affiliations

  1. Department of Obstetrics and Gynaecology and Department of Clinical Chemistry, Swedish University of Agricultural Sciences, P. O. Box 7039, S-750 07, Uppsala, Sweden

    G. A. Abdo, O. M. Njuguna, G. Fredriksson & A. Madej

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  1. G. A. Abdo
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  2. O. M. Njuguna
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  3. G. Fredriksson
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  4. A. Madej
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Abdo, G.A., Njuguna, O.M., Fredriksson, G. et al. Levels of Oestrone Sulphate during Pregnancy in Different Breeds of Cows and its Possible Association with Retained Foetal Membranes. Acta Vet Scand 32, 183–188 (1991). https://doi.org/10.1186/BF03546979

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Acta Veterinaria Scandinavica

ISSN: 1751-0147