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Effect of Endometrial Sampling Procedures on Subsequent Pregnancy Rate of Cattle
Journal article   Open access   Peer reviewed

Effect of Endometrial Sampling Procedures on Subsequent Pregnancy Rate of Cattle

Orlando Ramirez-Garzon, Ricardo Soares Magalhaes, Nana Satake, Jonathan Hill, Claudia Jimenez, Michael K. Holland and Michael McGowan
Animals (Basel), Vol.11(6), 1683
05/06/2021
PMID: 34198740
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Published (Version of record)CC BY V4.0 Open Access
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Abstract

Agriculture Science & Technology Veterinary Sciences
Endometrial infections are a common cause of reproductive loss in cattle. Accurate diagnosis is important to reduce the economic losses caused by endometritis. A range of sampling procedures have been developed which enable collection of endometrial tissue or luminal cells or uterine fluid. However, as these are all invasive procedures, there is a risk that sampling around the time of breeding may adversely affect subsequent pregnancy rate. This systematic review compared the pregnancy rates (PR) of cattle which underwent uterine lavage (UL), cotton swab (CS), cytobrush (CB), cytotape (CT), or endometrial biopsy (EB) sampling procedures with those that were not sampled. Using the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) protocol, relevant databases, including Pubmed, Web of Science, CAB Abstracts, VetMed Resource–Ruminants, and Scopus, were searched. The outcome measured was the pregnancy rate after the collection of endometrial sample(s). Seven studies, involving a total of 3693 cows, fulfilled the inclusion criteria for the systematic review and allowed the comparison of PR between sampled (n = 1254) and non-sampled cows (n = 2409). The results of the systematic review showed that endometrial sampling procedures can be performed before breeding or shortly after insemination without adversely affecting pregnancy rates in cattle. However, further studies are needed to validate this information.

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