<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Pregnancy-specific protein B (PSPB) is produced by mono and binucleate trophoblast cells in the placenta of ruminants during pregnancy. This study was designed to determine the pattern of serum PSPB in Yankasa ewes during pregnancy and postpartum periods. Mature cycling Yankasa ewes were synchronized and divided into two groups A (n=11) and B (n=13). Group A was bred, while group B was unbred. Blood samples for PSPB assessment were collected from the ewes starting from the day of breeding until 4 weeks post-lambing. All pregnant Yankasa ewes lambed with singleton lambs after an average of 151.18 days. There was a significant (<italic>p</italic>&lt;0.05) increase in PSPB in pregnant compared with the non-pregnant ewes in the period between 3 weeks post-breeding and 3 weeks post-lambing. Peaks were detected in the first (100.60 ng/ml), second (133.90 ng/ml), and third (114.82 ng/ml) trimesters at 5, 10 and 21 weeks of gestation, respectively, but steadily decreased within 4 weeks (2.38 ng/ml) postpartum. In conclusion, PSPB detected pregnancy in Yankasa ewes from 3 weeks post-breeding with peak levels at 5, 10 and 21 weeks post-breeding in the first, second, and third trimesters, respectively. PSPB decreased gradually after lambing until 4 weeks postpartum.</p></abstract>

Pregnancy-specific protein B (PSPB) is produced by mono and binucleate trophoblast cells in the placenta of ruminants during pregnancy. This study was designed to determine the pattern of serum PSPB in Yankasa ewes during pregnancy and postpartum periods. Mature cycling Yankasa ewes were synchronized and divided into two groups A (n=11) and B (n=13). Group A was bred, while group B was unbred. Blood samples for PSPB assessment were collected from the ewes starting from the day of breeding until 4 weeks post-lambing. All pregnant Yankasa ewes lambed with singleton lambs after an average of 151.18 days. There was a significant (p<0.05) increase in PSPB in pregnant compared with the non-pregnant ewes in the period between 3 weeks post-breeding and 3 weeks post-lambing. Peaks were detected in the first (100.60 ng/ml), second (133.90 ng/ml), and third (114.82 ng/ml) trimesters at 5, 10 and 21 weeks of gestation, respectively, but steadily decreased within 4 weeks (2.38 ng/ml) postpartum. In conclusion, PSPB detected pregnancy in Yankasa ewes from 3 weeks post-breeding with peak levels at 5, 10 and 21 weeks post-breeding in the first, second, and third trimesters, respectively. PSPB decreased gradually after lambing until 4 weeks postpartum.

Pregnancy-Specific Protein B in Yankasa Ewes During Pregnancy and Postpartum Periods

Department of Theriogenology and Animal Production, Faculty of Veterinary Medicine

Department of Theriogenology, Faculty of Veterinary Medicine

Department of Theriogenology and Production, Faculty of Veterinary Medicine

Macedonian Veterinary Review

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Pregnancy-specific protein B (PSPB) is produced by mono and binucleate trophoblast cells in the placenta of ruminants during pregnancy. This study was designed...

Pregnancy-Specific Protein B in Yankasa Ewes During Pregnancy and Postpartum Periods

Published Online: Mar 15, 2021

Page range: 55 - 62

Received: Aug 20, 2020

Accepted: Dec 07, 2020

DOI: https://doi.org/10.2478/macvetrev-2021-0010

Keywords
pregnancy specific protein-B, pregnancy, postpartum, Yankasa ewes

© 2021 Adewale Ayodeji Adeyeye et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Pregnancy-Specific Protein B in Yankasa Ewes During Pregnancy and Postpartum Periods

Published Online: Mar 15, 2021

Page range: 55 - 62

Received: Aug 20, 2020

Accepted: Dec 07, 2020

DOI: https://doi.org/10.2478/macvetrev-2021-0010

Keywordspregnancy specific protein-B, pregnancy, postpartum, Yankasa ewes

© 2021 Adewale Ayodeji Adeyeye et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
pregnancy specific protein-B, pregnancy, postpartum, Yankasa ewes