Histophilus somni strain USDA-ARS-USMARC-63255

Histophilus somni strain USDA-ARS-USMARC-63255 is a Gram-negative, rod-shaped bacterium associated with the hosts Bos taurus and Bos, commonly known as cattle. This organism exhibits a mesophilic growth pattern, thriving optimally at a temperature of 35°C and is capable of functioning as both an aerobe and a facultative anaerobe. This strain is significant in the context of cattle health, as it is implicated in various respiratory diseases, including pneumonia, bovine respiratory disease (BRD), and the broader bovine respiratory disease complex (BRDC). These health issues are particularly concerning in livestock management, as they can lead to increased morbidity and mortality rates in affected herds, impacting both animal welfare and agricultural productivity. Histophilus somni has a single replicon and features a double membrane structure, which is characteristic of Gram-negative bacteria. The accession number for this strain is NZ_CP018803.1, which provides a reference for genetic and genomic studies related to its pathogenicity and environmental interactions. The ecological role of Histophilus somni in cattle highlights the importance of understanding host-associated bacteria in livestock. Its presence in the respiratory system of cattle indicates a complex relationship that may influence disease dynamics, immunity, and overall herd health. This underscores the need for ongoing research into management practices that can mitigate the impact of such pathogens in agricultural settings.