Recherche

Weary, D.M; Eriksson, Hanna K.; Daros, Ruan; von Keyserlingk, M.A.G — 2021-06-07 Data from a prospective observational longitudinal study examining the relationship between sole hemorrhages or sole ulcers in peak to mid-lactation and time standing during the weeks around calving. A convenience sample of 8 dairy cattle herds were visited every other week, and animals without previous severe horn lesions and deemed sound at 4 to 8 wk before calving were enrolled. Standing behavior was measured with data loggers attached to a rear leg, and standing time and duration of the longest standing bout were determined for each cow. Standing behavior was summarized into 3 periods: before (d -14 to -2), around (d -1 to 1), and after (d 2 to 14) calving. Average daily standing time and average daily longest standing bout were determined for each cow and period.

Daros, Ruan; Eriksson, Hanna K.; Weary, D.M; von Keyserlingk, M.A.G — 2019-09-07 Original data, R script (code) and code output for the paper published on Journal of Dairy Science. For best use, replicate analysis using R. Importing data using the .csv file may cause some variables (columns of the spreadsheet) to be imported with the wrong format. Any issues, do not hesitate in contact. Happy coding!

Sahar, Mohammad Wali; Beaver, Annabelle; Daros, Ruan; Weary, D.M — 2022-05-26 Data from an observational longitudinal study exploring lameness definitions, assessment frequencies and association between the lameness definitions and parity of dairy cattle. The data was collected at UBC dairy education and research farm. A sample of 282 cows were locomotion scored weekly and were followed from calving till 12 weeks in lactation.

Eriksson, Hanna; Daros, Ruan; von Keyserlingk, Marina; Weary, Daniel — 2019-02-04 The objectives of the manuscript for which this data was used were to evaluate how (1) lameness definition, and (2) assessment frequency, affect identification and classification (mild or severe lameness) of new lameness cases in dairy cattle. Dairy cows (n = 262) were followed from the cessation of lactation until the next calving, and locomotion was assessed weekly. Two data set are available - one including all locomotion assessments for each cow, and one with the data summarised by animal.

Daros, Ruan — 2019-07-26 On this file I combine all appendices and supplementary material related to my PhD thesis (available at http://hdl.handle.net/2429/71099). Please use READ.ME for more details.

Daros, Ruan; Weary, D.M; von Keyserlingk, M.A.G — 2022-04-08 Dairy cows in both grazing and zero-grazing systems are at risk of disease in the weeks around calving. In this review, we highlight the factors associated with the development of diseases common during this period and discuss how different production systems face different challenges in improving cow health; some risks (including some associated with lameness) appear easier to address in grazing systems, but some nutritional issues are easier to manage in zero-grazing systems. We conclude that system specific solutions are required. In the supplementary material you will find a list of the research compiled to estimate the disease prevalence of dairy cattle under grazing and zero-grazing dairies.

Daros, Ruan; Eriksson, Hanna K.; Weary, D.M; von Keyserlingk, M.A.G — 2019-10-25 This file contains the original data used to run the statistical analysis for the paper "The relationship between transition period diseases and lameness, feeding time, and body condition during the dry period" by Daros et al., 2020 published in the Journal of Dairy Science. Here you will also find the supplementary material for the original publication and the code used to generate the supplementary material. Any issues, do not hesitate in contact. Happy coding!