2020
DOI: 10.3389/fvets.2020.00371
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Vaginal Microbiota Changes During Estrous Cycle in Dairy Heifers

Abstract: The vaginal microbiota plays an important role in the health of dairy cattle, and it could be manipulated for the prevention and treatment of reproduction-related infections. The present study profiles and compares the vaginal microbiota of healthy dairy heifers during the estrous cycle focusing the results in follicular (estrus) and luteal (diestrus) phases using 16S rRNA sequencing of the V3-V4 hypervariable region. Twenty 13-16-months-old virgin dairy heifers from a single farm were included in this study. … Show more

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Cited by 48 publications
(46 citation statements)
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References 38 publications
(64 reference statements)
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“…The dominance of genera Histophilus in both healthy cows ( Schlafer et al, 2007 ; Quereda et al, 2020 ) and cows with reproductive diseases ( Bano et al, 2011 ; Rodrigues et al, 2015 ) was also addressed in previous studies. Histophilus was described as an obligate commensal member in bovine genital mucosal surfaces as well as an opportunistic pathogen under favorable conditions ( Bisgaard, 1995 ; Sandal and Inzana, 2010 ).…”
Section: Discussionmentioning
confidence: 96%
See 1 more Smart Citation
“…The dominance of genera Histophilus in both healthy cows ( Schlafer et al, 2007 ; Quereda et al, 2020 ) and cows with reproductive diseases ( Bano et al, 2011 ; Rodrigues et al, 2015 ) was also addressed in previous studies. Histophilus was described as an obligate commensal member in bovine genital mucosal surfaces as well as an opportunistic pathogen under favorable conditions ( Bisgaard, 1995 ; Sandal and Inzana, 2010 ).…”
Section: Discussionmentioning
confidence: 96%
“…The common sites for animal-associated metagenomic studies are gastrointestinal tracts, reproductive tracts, respiratory tracts, skin, oral and amniotic fluids. The application of metagenomic studies in animals has focused on the contributions of the metagenomes to host health ( Oba et al, 2021 ), susceptibility to diseases ( Rodrigues Hoffmann, 2017 ; Borsanelli et al, 2018 ; Mach et al, 2021 ), physiological purposes ( Ault et al, 2019 ; Quereda et al, 2020 ), and anatomical differences ( Glendinning et al, 2017 ).…”
Section: Introductionmentioning
confidence: 99%
“…in buffalo exclusively during preestrus and diestrus phases. Notably, Lactobacilli were found to be very low in bovine vaginal microbiota which was con rmed by culture-dependent and culture-independent methods (Otero et al 2000;Quereda et al 2020;Srinivasan et al 2019). The present nding reveals the absence of Lactobacillus sp.…”
Section: Discussionmentioning
confidence: 81%
“…In contrast to the uterine microbiota, the vaginal microbiota had the highest richness before calving and decreased with time. Unlike humans, whose vaginal flora is usually dominated by genus Lactobacillus , those of healthy cows is composed of a variety of bacteria depending on the estrous cycle ( 33 , 34 ). Therefore, it was expected that the bacterial composition of the vagina would not yet be fully restored to its prepartum state at 35 DPP.…”
Section: Discussionmentioning
confidence: 99%