Evaluating the use of luteal color Doppler ultrasonography and pregnancy-associated glycoproteins to diagnose pregnancy and predict pregnancy loss in Bos taurus beef replacement heifers

The objective of this study was to evaluate the use of corpus luteum (CL) color Doppler (CD) ultrasonography and pregnancy-associated glycoproteins (PAG) for early pregnancy diagnosis and examine their ability to predict late embryonic/early fetal mortality (LEM) in Bos taurus beef replacement heife...

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Bibliographic Details
Published in:Journal of animal science 2022-12, Vol.100 (12)
Main Authors: Holton, Matthew P, de Melo, Gabriela D, Dias, Nicholas W, Pancini, Stefania, Lamb, Graham C, Pohler, Ky G, Mercadante, Vitor R G, Harvey, Kelsey M, Fontes, Pedro L P
Format: Article
Language:English
Subjects:
Animals
Cattle
Corpus Luteum - diagnostic imaging
Estrus Synchronization - methods
Female
Glycoproteins
Insemination, Artificial - veterinary
Pregnancy
Pregnancy Rate
Progesterone
Reproduction
Ultrasonography, Doppler, Color - veterinary
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Summary:The objective of this study was to evaluate the use of corpus luteum (CL) color Doppler (CD) ultrasonography and pregnancy-associated glycoproteins (PAG) for early pregnancy diagnosis and examine their ability to predict late embryonic/early fetal mortality (LEM) in Bos taurus beef replacement heifers. Beef heifers (n = 178) were exposed to a 7-d CO-Synch + CIDR protocol followed by fixed-time artificial insemination (day 0). On days 20 and 22, B-mode and CD ultrasonography were performed to evaluate CL morphometries and blood perfusion, respectively. Heifers were considered nonpregnant when CL area was
ISSN:0021-8812
1525-3163
DOI:10.1093/jas/skac335