Thomas J Wehri

Nov 8, 2023 | biorxiv.org | Christopher Dean |Thomas J Wehri |Tui Ray |Yale Deng

AbstractContaminants can easily outnumber bacteria that originate within the milk itself, milk microbiome research currently suffers from a critical knowledge gap; namely, does non-mastitis bovine milk contain a native microbiome? In this study, we sampled external and internal mammary epithelium, stripped and cisternal milk, used numerous negative controls to identify potential sources of microbial contamination.

Sep 18, 2023 | biorxiv.org | Christopher Dean |Felipe Peña-Mosca |Tui Ray |Thomas J Wehri

AbstractThe primary objective of this study was to identify associations between teat apex microbiome and Staphylococcus aureus intramammary infection (IMI) risk in primiparous cows during the first 5 weeks after calving. We performed a case-control study using shotgun metagenomics of the teat apex and culture-based milk data collected longitudinally from 710 primiparous cows on 5 organic dairy farms. We observed a strong association between S.