TY - JOUR
T1 - Progesterone and estradiol-17β as a potential method for pregnancy diagnosis in the collared peccary (Pecari tajacu)
AU - Mayor, Pedro
AU - Guimarães, Diva Anelie
AU - López-Béjar, Manel
PY - 2012/12/1
Y1 - 2012/12/1
N2 - In this study, the period of pregnancy of nine collared peccary females has been monitored through the analysis of serum progesterone and estradiol-17β profiles. Serum concentrations of progesterone increased by Day 4 after conception, reaching concentrations of 33.4 ± 5.6. ng/mL on Day 10. Between Days 10 and 130 progesterone values were maintained between 20 and 60. ng/mL. In the collared peccary, embryonic estradiol synthesis is first observed in the systemic circulation by Day 15 of pregnancy. Between Days 0 and 50 of pregnancy, average estradiol-17β concentrations were between 0 and 30. pg/mL. From Day 75 of pregnancy onwards, estradiol concentrations were constantly increasing, reaching maximum concentrations (131.4 ± 40.8. pg/mL) on the day of parturition. The combined study of serum progesterone and estradiol-17β concentrations as a potential method for early pregnancy diagnosis presented the best overall accuracy (73%) when the threshold was established at 20. ng/mL serum progesterone and 20. pg/mL serum estradiol. Nevertheless, the accuracy for diagnosing pregnancy of females at mid and late pregnancy was 78% and 95%, respectively. The analysis of the sexual hormones during pregnancy could be a useful tool as a potential pregnancy diagnosis and an efficient predictor of the day of parturition in the captive collared peccary. © 2012 Elsevier Ltd.
AB - In this study, the period of pregnancy of nine collared peccary females has been monitored through the analysis of serum progesterone and estradiol-17β profiles. Serum concentrations of progesterone increased by Day 4 after conception, reaching concentrations of 33.4 ± 5.6. ng/mL on Day 10. Between Days 10 and 130 progesterone values were maintained between 20 and 60. ng/mL. In the collared peccary, embryonic estradiol synthesis is first observed in the systemic circulation by Day 15 of pregnancy. Between Days 0 and 50 of pregnancy, average estradiol-17β concentrations were between 0 and 30. pg/mL. From Day 75 of pregnancy onwards, estradiol concentrations were constantly increasing, reaching maximum concentrations (131.4 ± 40.8. pg/mL) on the day of parturition. The combined study of serum progesterone and estradiol-17β concentrations as a potential method for early pregnancy diagnosis presented the best overall accuracy (73%) when the threshold was established at 20. ng/mL serum progesterone and 20. pg/mL serum estradiol. Nevertheless, the accuracy for diagnosing pregnancy of females at mid and late pregnancy was 78% and 95%, respectively. The analysis of the sexual hormones during pregnancy could be a useful tool as a potential pregnancy diagnosis and an efficient predictor of the day of parturition in the captive collared peccary. © 2012 Elsevier Ltd.
KW - Collared peccary
KW - Estradiol
KW - Pecari tajacu
KW - Pregnancy
KW - Progesterone
U2 - 10.1016/j.rvsc.2012.04.006
DO - 10.1016/j.rvsc.2012.04.006
M3 - Article
VL - 93
SP - 1413
EP - 1417
JO - Research in Veterinary Science
JF - Research in Veterinary Science
SN - 0034-5288
IS - 3
ER -