[en] Specific RIA systems were developed and used to measure pregnancy-associated glycoprotein (PAG) concentrations during gestation and the postpartum period in Azawak Zebu cows. Twelve females were palpated per rectum and diagnosed as pregnant. Blood samples were taken at 5-10-day intervals from approximately Week 8 of gestation until Week 10 postpartum (pp). One Zebu cow (Z15) initially diagnosed as pregnant showed PAG concentrations lower than the assay sensitivity (<0.20 ng/ml) and did not calve. Another cow (ZSand) showed abnormally high PAG concentrations during gestation and was excluded from the general PAG profile. The 10 other Zebu cows exhibited a very similar PAG profile. In these animals, concentrations increased progressively from Week 8 to 35 of gestation (from 6.0 +/- 4.2 to 196.0 +/- 34.8 ng/ml), remaining relatively constant until Week 39 (210.8 +/- 74.8 ng/ml), when they increased sharply to reach their highest level (1095.6 +/- 607.2 ng/ml) at around parturition. After delivery, PAG concentrations declined significantly (P < 0.05) until Week 2 postpartum (348.4 +/- 85.6 ng/ml) and slowly until Week 10 postpartum. Our results revealed that the PAG pattern in Zebu cattle was similar to those of taurine breeds during the first two trimesters of pregnancy, but differed in the peripartum period.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Melo de Sousa, Noelita ; Université de Liège - ULiège > Département de sciences fonctionnelles > Physiologie de la reproduction
Zongo, M.
Pitala, W.
Boly, Hamidou ; Université de Liège - ULiège > Services généraux (Faculté de médecine vétérinaire) > Relations académiques et scientifiques (Méd. vétérinaire)
Sawadogo, L.
Sanon, M.
de Figueiredo, J. R.
Goncalves, P. B. D.
El Amiri, B.
Perenyi, Z.
Beckers, Jean-François ; Université de Liège - ULiège > Département de sciences fonctionnelles > Physiologie de la reproduction
Language :
English
Title :
Pregnancy-associated glycoprotein concentrations during pregnancy and the postpartum period in Azawak Zebu cattle
Publication date :
2003
Journal title :
Theriogenology
ISSN :
0093-691X
eISSN :
1879-3231
Publisher :
Elsevier, New York, United States - New York
Volume :
59
Issue :
5-6
Pages :
1131-1142
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
CAPES - Coordenação de Aperfeicoamento de Pessoal de Nível Superior
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
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