Abstract |
Thirteen primiparous and 41 multiparous Holstein-Friesian cattle were used to study the relationship between maternal plasma progesterone (P4) and estrone sulfate (E1S) concentrations and the prevalence of dystocia. The calvings in 4 heifers and 30 cows were normal (eutocia), while the calvings in 9 heifers and 11 cows were difficult ( dystocia). Neither the concentrations of P4 nor E1S were different between the groups with eutocia and dystocia from days 90 to 270 of pregnancy. However, a few days prior to parturition, eutocial cows and heifers showed a sharp decline of plasma P4, while dystocial cattle did not show such a remarkable decline of P4 concentration. Plasma P4 levels in dystocial cows a few days antepartum were significantly higher than in eutocial animals (P<0.05 or P<0.01). Prepartum E1S concentrations were significantly lower (P<0.05) in dystocial than eutocial cattle during the prepartum period from days 6 to 1 in heifers and from days 3 to 1 in cows. These results suggest that insufficient production of E1S and delayed regression of the corpora lutea are possible causes of dystocia in cattle.
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Authors | W C Zhang, T Nakao, M Moriyoshi, K Nakada, A Y Ribadu, T Ohtaki, Y Tanaka |
Journal | The Journal of veterinary medical science
(J Vet Med Sci)
Vol. 61
Issue 8
Pg. 909-13
(Aug 1999)
ISSN: 0916-7250 [Print] Japan |
PMID | 10487230
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Estrone
- Progesterone
- estrone sulfate
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Topics |
- Animals
- Cattle
- Cattle Diseases
(blood, epidemiology)
- Dystocia
(blood, epidemiology, veterinary)
- Estrone
(analogs & derivatives, blood)
- Female
- Japan
(epidemiology)
- Maternal-Fetal Exchange
- Pregnancy
- Prevalence
- Progesterone
(blood)
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