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Supplemental data: Perceived producer barriers to the implementation of best management practices for the early detection of mild lameness and selective antibiotic therapies for nonsevere clinical mastitis and at drying-off in dairy cattle
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Brunt, Michael; Ritter, Caroline; Renaud, David L.; LeBlanc, Stephen; Kelton, David F. — 2024-11-07 A total of 6 focus groups involving 35 participants from 30 farms were held in Ontario Canada from February 5, to March 8, 2024. Twenty-five (71%) individuals who identified as a man and ten (29%) who identified as a woman. Participants were on average 39 years old (median = 37, range = 20 to 80). Twenty-three of the farms (77%) were freestall and seven (23%) were tiestall. Sand bedding was used by 14 farms (47%) and combinations of shavings, straw and mats were used by 16 farms (53%). Farms had an average of 105 lactating cows (median = 82, range = 40 to 425). Ten farms (33%) milked their cows in a parlor, 13 (43%) used an automatic milking systems, and seven (24%) farms used other milking systems.
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Supplementary data for: Cross-sectional study of antimicrobial use and treatment decision making for pre-weaned Canadian dairy calves
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Uyama, Tamaki; Kelton, David F.; Morrison, Emma I.; de Jong, Ellen; McCubbin, Kayley D.; Barkema, Herman W.; Dufour, Simon; Sanchez, Javier; Heider, Luke C.; LeBlanc, Stephen J.; Winder, Charlotte B.; McClure, J T.; Renaud, David L. — 2021-08-12 The questionnaire aims to describe the herd demographics and antimicrobial use in calves on farms enrolled in the study. It highlights the case-specific indicators used by the dairy producers when they decide to treat calves with antimicrobials for diarrhea and respiratory disease.
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Supplemental data for: Characterising and describing the literature on the impacts of umbilical care on health outcomes and risk factors examined for umbilical health in intensively raised bovines: A scoping review.
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Van Camp, Matthew B.; Duffield, Todd F.; Gomez, Diego E.; Mcfarlane, William J.; Renaud, David L.; Winder, Charlotte B. — 2021-08-03 <p><b>Research abstract</b>:The objective of this scoping review was to describe and characterize the existing literature regarding umbilical health and identify current gaps in knowledge. Six databases were searched for relevant primary research. Eligible studies must have examined umbilical health in an intensively raised bovine population. There were 4,250 articles that fit within the search terms and had their title and abstracts screened by two independent reviewers for potential relevance. From these, 724 full text articles were then screened, with 150 articles meeting the review criteria for data extraction. Seventeen were classified as descriptive, 24 were clinical trials, and 109 were analytical observational studies. Umbilical outcomes evaluated in descriptive studies were omphalitis (n = 11), parasitic infections of the umbilicus (n = 5), and umbilical hernias (n = 2). Only one clinical trial (n = 1) examined treatment of navel infections, whereas the remainder evaluated management factors that could be used to prevent a navel health outcome (n = 23), which included umbilical infections (n = 17), navel myasis (n = 3), navel measurements (n = 5), umbilical hernias (n = 1), and umbilical edema (n = 1). Analytical observational studies included studies examining risk factors for umbilical health (n = 60) and studies examining umbilical health itself as a risk factor (n = 60). Studies examining risk factors for umbilical health classified their outcomes as umbilical infections (n= 28), 11 of which were undefined and one which defined as diagnosed by a veterinarian. Umbilical hernias (n=8), two of which were only defined as diagnosed by a veterinarian and one which diagnosed by the herd manager. The remaining umbilical outcomes included scoring the navel sheath/flap size (n = 16), navel myasis (n = 2), and measurements of the umbilicus (n = 6). Studies examining umbilical health as a risk factor defined the umbilical risk factors as umbilical infection (n=39) of which 13 were undefined, umbilical hernias (n=8) of which 4 were undefined (several articles examined both umbilical infections and hernias), navel dipping (n = 12), navel/sheath scores as part of conformation classification for breeding (n = 2), navel measurements (n = 3), and umbilical cord drying times (n = 2). This review highlights the areas in need of future umbilical health research such as clinical trials evaluating the efficacy of different treatments of umbilical infection. It also emphasizes the importance of future studies to clearly define umbilical health outcomes of interest.</p><p><b>Data description</b>:This supplementary document presents data aimed at describing and characterizing the existing literature regarding umbilical health in bovines. Literature was gathered using a pre-defined search strategy from 6 databases and underwent screening of title and abstracts followed by full texts. A total of 150 articles met the search criteria and were included in this review, of these, 17 were classified as descriptive studies, 24 were clinical trials, and 109 were analytical observational studies.</p>
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Supplementary material: Effect of a milk by-product based calf starter feed on dairy calf nutrient consumption, rumen development, and performance when fed different milk levels
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Parsons, Sarah D.; Steele, Michael A.; Leslie, Ken E.; Renaud, David L.; Reedman, Cassandra N.; Winder, Charlotte B.; DeVries, Trevor J. — 2021-10-18 The objective of this study was to determine the effect of a milk by-product based feed treatment compared to a conventional grain-based ration on feed intakes, rumen development, and growth of heifer calves fed two different levels of milk. This data is from mixed linear models, with the data presented for treatments separated by factor (milk treatment and feed treatment) rather than the treatment interactions.
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Supplemental data for: A survey of male and female dairy calf care practices and opportunities for change
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Wilson, Devon; Pempek, Jessica A.; Cheng, Ting-yu; Habing, Gregory; Proudfoot, Kathryn L.; Winder, Charlotte B.; Renaud, David L. — 2022-10-17 This is supplementary data for a paper titled "A survey of male and female dairy calf care practices and opportunities for change." The questionnaire aims to describe the herd and dairy farmer demographics and values of participants from Ontario and Atlantic Canada, along with their male and female calf care practices.
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Supplemental figure and table for: How benchmarking motivates colostrum management practices on dairy farms: a realistic evaluation
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Wilson, Devon J.; Roche, Steve M.; Pempek, Jessica A.; Habing, Gregory; Proudfoot, Kathryn L.; Renaud, David L. — 2023-05-31 This study used realistic evaluation to determine how and in which circumstances providing farmers with benchmark data can motivate improved colostrum management practices. The supplementary material consists of a figure and table that were used by veterinarians in the study to deliver benchmark data to their farmers. The interview guide and an additional table on the realistic evaluation method is also provided.
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Supplementary data for: Associations among antimicrobial use, management practices, and antimicrobial resistance in calves on Canadian dairy farms: a cross-sectional study
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Uyama, Tamaki; Renaud, David L.; Morrison, Emma I.; de Jong, Ellen; McCubbin, Kayley D.; Barkema, Herman W.; Dufour, Simon; Fonseca, Mariana; McClure, J T.; Sanchez, Javier; Heider, Luke C.; Kelton, David F. — 2024-02-29 This dataset illustrates the causal diagram of calf management practices, antimicrobial use, and multidrug resistant Escherichia coli in calf fecal samples.
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Supplemental Data: Perceived producer barriers to the implementation of best management practices for the transportation of lactating cull cows and control of Salmonella Dublin
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Brunt, Michael; Ritter, Caroline; Renaud, David L.; LeBlanc, Stephen; Kelton, David F. — 2024-03-14 A total of five focus groups involving 28 dairy farmer participants were held in Ontario, Canada from March 14 to April 14, 2023. Twenty-one (75%) participants identified as men and seven (25%) as women. On average, participants were 42 years old (median = 36, range = 20-79) and had 93 lactating cows on their farm (median = 80, range = 40-320). Eighty-two percent of farms (n = 23/28) were freestall, fourteen percent (n = 4/28) were tiestall, and four percent (n = 1/28) were compost-bedded pack.
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Supplementary data for: A cross-sectional study on antimicrobial use and calf management practices in Canadian pre-weaned dairy calves
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Uyama, Tamaki; Renaud, David L.; Morrison, Emma I.; McClure, J T.; LeBlanc, Stephen; Winder, Charlotte B.; de Jong, Ellen; McCubbin, Kayley D.; Barkema, Herman W; Dufour, Simon; Sanchez, Javier; Heider, Luke C.; Kelton, David F. — 2022-09-09 The supplementary figure shows the questionnaire used in the study. The supplementary tables describe the responses on calf management practices on Canadian dairy farms and univariable analysis of antimicrobial use and farm management practices.

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(Author: Renaud, David L.)

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