Publications by authors named "K Schwartzkopf-Genswein"
Background: Lameness is a collective term for multiple foot diseases in cattle including, but not limited to, foot rot (FR), digital dermatitis (DD), and toe tip necrosis (TTN), which is a critical welfare concern. The diagnosis of specific phenotypes of lameness in feedlot cattle is challenging and primarily relies on visual assessments. However, different lameness phenotypes share similar clinical symptoms and there is a limited understanding of potential biomarkers relating to such disease for further molecular diagnosis.
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- * This study analyzed the skin microbiota of active DD lesions in cattle from three feedlots, using swab samples from lesions at different stages (M2 and M4.1) and from healthy feet (M0).
- * The results showed that the bacterial communities in M2 and M4.1 lesions were distinct from healthy skin but similar to each other, indicating a significant shift in bacterial diversity as the infection progressed.
This study was designed to assess the impacts of a mixture of deoxynivalenol (DON) and ergot alkaloids (EAs) on growth performance, rumen function, blood parameters, and carcass traits of feedlot cattle. Forty steers (450 ± 6.0 kg) were stratified by weight and randomly allocated to 1 of 4 treatments; control-low (CON-L), control-high (CON-H) which contained low or high wheat screenings that lacked mycotoxins at the same level as the mycotoxin-low (MYC-L; 5.
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- Digital dermatitis (DD) in feedlot cattle is a growing concern, and this study analyzed over 1.2 million health records from western Canadian cattle to determine risk factors associated with the disease from 2014 to 2018.
- Cattle sourced from confined background operations (CB) have more than double the risk (IRR = 2.08) of developing DD compared to those from auction markets (AM), while ranch direct (RD) cattle show significantly lower risk (IRR = 0.02).
- The study found that female cattle are at a higher risk of DD than males, with varying incidences based on the year, and that smaller capacity feedlots (SCF) have a lower risk of
This study evaluated the effect of feeding ergot contaminated grain continuously or intermittently through backgrounding (BG) and finishing (FN) in a mash or pelleted supplement on the growth performance, health and welfare parameters, and carcass characteristics of feedlot beef steers. Sixty black Angus steers (300 ± 29.4 kg BW) were used in a complete randomized 238-d study.
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