Article (Scientific journals)
Characterisation of pregnancy losses after embryo transfer by measuring plasma progesterone and bovine pregnancy-associated glycoprotein-1 concentrations
Breukelman, S. P.; Perényi, Z.; Taverne, M. A. M. et al.
2012In Veterinary Record, 194 (1), p. 71-76
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Keywords :
Cattle; Progesterone; Pregnancy-associated glyoprotein-1; Pregnancy-loss
Abstract :
[en] The aim of this analysis was to determine whether pregnancy loss (PL) after embryo transfer (ET) in cattle was related to maternal progesterone (P4) concentrations during and shortly after ET, and maternal bovine pregnancy-associated glycoprotein-1 (bPAG-1) concentrations in plasma at days 25–35 of gestation. Embryos (n = 260) were produced either in vivo after superovulation (n = 115), or in vitro from oocytes (obtained with ovum pick-up) in co-culture (n = 44) or cultured in a synthetic medium (n = 101). Overall, PL was 56.9% (148) and no significant differences occurred in calving rate among the three embryo production groups. There was no difference in P4 concentrations on days 7–14 of gestation in the three groups, nor between ongoing and interrupted pregnancies. Between days 25 and 35 of pregnancy, bPAG-1 concentrations were unaffected by embryo production, but in cattle that had PL between days 26 and 120, four bPAG-1 profiles could be detected. Between days 25 and 32, bPAG-1 concentrations were influenced by PL, and concentrations were significantly lower in animals in which PL occurred between days 26 and 120 than in those animals that aborted later or calved at term. Early P4 concentrations suggested that maternal luteal factors were not responsible for PL which appeared to be caused by impaired conceptus development (regardless of embryo type) as reflected by low maternal bPAG-1 concentrations prior to embryonic death
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Breukelman, S. P.
Perényi, Z.
Taverne, M. A. M.
Jonker, H.
Van der Weijden, G. C.
Vos, P. L.A.M
de Ruigh, L.
Dieleman, S. J.
Beckers, Jean-François  ;  Université de Liège - ULiège > Département de sciences fonctionnelles > Physiologie de la reproduction
Szenci, O.
Language :
English
Title :
Characterisation of pregnancy losses after embryo transfer by measuring plasma progesterone and bovine pregnancy-associated glycoprotein-1 concentrations
Publication date :
October 2012
Journal title :
Veterinary Record
ISSN :
0042-4900
eISSN :
2042-7670
Publisher :
British Veterinary Medicine, London, United Kingdom
Volume :
194
Issue :
1
Pages :
71-76
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 14 December 2011

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