Investigating effective testing strategies for the control of Johne's disease in western Canadian cow-calf herds using an agent-based simulation model

Johnson, Paisley; McLeod, Lianne; Qin, Y.; Osgood, Nathaniel D.; Rosengren, Leigh B.; Campbell, John R.; Larson, Kathy; Waldner, Cheryl

doi:10.3389/fvets.2022.1003143

Cited by 1 publication

(1 citation statement)

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“…In summary, the unique longitudinal productivity and health data resulting from this network build on previous studies and provide a unique national baseline on which to build future research. Examples of research questions published to date from this network include addressing questions on Johne's disease, trace mineral nutrition, vaccination practices, antimicrobial use and resistance (10,26,(34)(35)(36)(37)(38)(39)(40). This information will inform region-specific needs for knowledge translation and solutions to enhance productivity and support sustainability.…”

Section: Discussionmentioning

confidence: 99%

The Canadian Cow-Calf Surveillance Network – productivity and health summary 2018 to 2022

Waldner,

Windeyer,

Rousseau

et al. 2024

Front. Vet. Sci.

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Cow-calf surveillance data provide critical information about changing herd demographics, productivity, health, and management as well as the opportunity to investigate the impact of differing management practices. A national cow-calf network was established to collect baseline information on herd health, production performance measures, and management. Questionnaires were used to collect information on herd attributes as well as data for the calving season, breeding, pregnancy testing, and weaning for herds from across Canada. From 2018 to 2022, a total of 565 calving record questionnaires, representing 110,658 calving female records from 171 herds were returned, along with 543 herd breeding to weaning questionnaires. Suggested benchmark values based on the 25th percentiles from Western and Eastern Canada were determined to be <5% for non-pregnancy, <2% for calf death from birth to 24 h, and < 2% for calf death from 24 h to weaning. Herds from Eastern Canada were more likely to report any assistance at calving (p < 0.001) than herds from Western Canada. Participating herds from the east had longer breeding (p < 0.001) and calving (p < 0.001) seasons than those from the west and were also more likely to use artificial insemination or embryo transfer (p < 0.001). Timing of calving season and use of large pastures for calving were not associated with mortality at birth. Herds that started calving before April were more likely to have calves die before 30 d than those that started calving later; however, this difference was not observed between 30 d and weaning. Herds that started to calve earlier were also more likely to report treating more calves for bovine respiratory disease, diarrhea, and navel or joint infections as well as to calf deaths from respiratory disease. Calves from herds in the east were more likely to be treated or die from diarrhea than from the west. Females from herds that started calving later were less likely to be pregnant. The unique longitudinal productivity and health data resulting from this network established a national baseline to address region-specific needs for knowledge translation and solutions to enhance productivity and support sustainability.

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