2020 journal article

Pregnancy specific protein B concentration for the prediction of lambing rate in sheep

SMALL RUMINANT RESEARCH, 184.

By: C. Pickworth n, J. Sheffield n & R. Poole n

co-author countries: United States of America 🇺🇸
author keywords: Sheep; Lambing rate; Pregnancy-Specific protein B
Source: Web Of Science
Added: April 14, 2020

An accurate diagnosis of pregnancy and prediction of lambing rates is a critical tool for improving efficiency in sheep flocks. The ability to manage ewe nutrition based on number of fetuses could improve animal welfare and productivity. Pregnancy Specific Protein B (PSPB) assays are commercially available and have proven a valuable tool for pregnancy diagnosis but less work has been done on accuracy of predicting fetal counts. The objective of this study was to determine if PSPB could be used to accurately predict lambing rates in sheep. Samples were collected from 54 Dorset, Katahdin, or crossbred ewes at 28 days post ram removal which was approximately 46 days post breeding. Samples were processed using the quantitative BioPRYN® assay. Ewes carrying twins had greater (P < 0.001) PSPB concentrations that ewes that delivered singles, and triplets or quads tended (P = 0.09) to be greater than twins. This test could become an effective diagnostic tool for improving sheep flock management throughout gestation by providing producers insight into predicting lambing rates.