Association between adenosine triphosphate luminometry of feeding equipment and environmental and health parameters of preweaning calves on dairy farms

作者：Laura Van Driessche, D.E. Santschi, Éric R. Paquet, D.L. Renaud, Édith Charbonneau, Marie-Lou Gauthier, M.A. Steele, Anaïs Chancy, Nicolas Barbeau-Grégoire, Sébastien Buczinski · 发表于：Journal of Dairy Science · 年份：2024 · DOI：10.3168/jds.2024-24700 · 被引用次数：4 · 研究领域：Animal health and immunology、Effects of Environmental Stressors on Livestock、Viral gastroenteritis research and epidemiology

The objective of this study was to examine the influence of different environmental factors on ATP luminometry measurements of feeding equipment and to investigate associations with health of preweaning calves and the levels of ATP identified through luminometry. On 50 commercial dairy farms in Quebec, Canada, ATP luminometry measurements (in relative light units, RLU) were obtained using the direct swabbing technique with Hygiena UltraSnap swabs and a liquid rinsing technique with the same swab for automatic milk feeders (AMF), bottles, buckets, esophageal tube feeders (ET), milk replacer, nipples, and water. During this visit, environmental factors (including temperature, air draft, humidity, ammonia, and bacterial count) were collected, and a clinical examination (including respiratory score and fecal score) was performed for all preweaning calves present at the farm. This process was repeated 4 times in a year, leading to collection of luminometer results, environmental parameters, and overall health of calves for each season per farm. Overall, a difference in luminometer results was seen between the different periods sampled for all feeding equipment (except the ET), milk replacer, and water, showing higher RLU values in spring and summer and lower values in autumn and winter. When comparing RLU measurements with environmental factors, only a low to negligible correlation could be found. When feeding equipment was classified as not contaminated or contaminated based on p...