Effect of pegbovigrastim administration on the microbiome found in the vagina of cows postpartum

Journal of Dairy Science
K N GalvãoR C Bicalho

Abstract

The objective of this study was to evaluate the effect of pegbovigrastim (PEG) treatment of peripartum Holstein cows on the microbiome found in the vagina postpartum using sequencing of the 16S rRNA gene. A subset of cows was randomly sampled from a larger study where cows had been randomly assigned to 1 of 2 treatments: pegbovigrastim (PEG) or untreated control (CTR). The PEG-treated cows received a subcutaneous injection containing 15 mg of pegbovigrastim 7 d before expected calving and a second injection within 24 h of calving. Vaginal samples from 97 PEG-treated and 98 CTR cows were collected at calving, 7 ± 3, and 35 ± 3 d in milk (0, 7, and 35 DIM). Metritis was diagnosed at 7 ± 3 DIM and purulent vaginal discharge (PVD) at 35 ± 3 DIM. The PEG treatment did not alter the vaginal microbiome. Principal coordinate analysis (PCoA) showed that metritic cows had a dissimilar vaginal microbiome compared with cows that did not develop metritis, particularly at 7 but also at 35 DIM. This difference was characterized by higher relative abundance of Porphyromonas and Bacteroides and a lower relative abundance of Ureaplasma, Ruminococcaceae, and Clostridiales at 7 DIM, and a higher relative abundance of Ureaplasma and a lower relativ...Continue Reading

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Citations

Oct 9, 2019·The Veterinary Clinics of North America. Food Animal Practice·Diego E GomezMarcio C Costa
Jul 12, 2020·Applied and Environmental Microbiology·Klibs N GalvãoSoojin Jeon

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