Validation of Topically Placed Merck Bio-Thermo Microchips for Estimating Core Body Temperature in Dry Holstein Cows

Accurate measurement of core body temperature is essential for monitoring health, stress, and productivity in dairy cattle (Ibáñez et al., 2023). Traditional methods, such as rectal thermometry, provide reliable measures but are invasive, labor-intensive, and impractical for continuous monitoring of large herds (Ibáñez et al., 2023). Vaginal thermometry using modified controlled internal drug release (CIDR) devices can provide continuous data but is unsuitable for calves. Microchips capable of recording body temperature (e.g., Merck Bio-Thermo) have been used in livestock, particularly equines, but require subcutaneous implantation, which is invasive and not suitable for removal in food animals. Topical microchips may offer a noninvasive, low-stress alternative for repeated temperature monitoring, but their ability to accurately reflect core body temperature in dairy cattle is not well established. This study evaluates the validity of surface-mounted Merck Bio-Thermo microchips in five dry Holstein cows. Microchips were attached to the ear, inner front leg, and tail base, and temperatures were recorded hourly for four six-hour trials. Vaginal core temperatures were simultaneously recorded using CIDR-held data loggers. Ambient temperature and relative humidity were measured to assess environmental effects on surface readings. Temperature data were analyzed using regression models to evaluate the relationship between microchip and core temperatures. Microchip readings are expected to show moderate correlation with core temperatures, with some variation due to anatomical placement and environmental conditions. Findings from this study will help determine whether topically placed microchips provide a practical, noninvasive, and labor-efficient method for continuous monitoring of body temperature in dairy cattle.No embargoAcademic Major: Animal Science

On Black Bandes Dessinées and Transcolonial Power

A Tale of Two Kinshasas, or The Plurality of Everyday Postcolonialism -- The AYA Effect, or Marguerite Abouet's Timely and Timeless Interventions -- Reframing Migration in the Twenty-First Century -- Black Bandes Dessinées and Decolonial Ecocriticism -- Coda : Black Bandes Dessinées and BeyondItem embargoed for three year

When the Sky's the Limit in Open Access Models, How Do We Manage Our Workflows? The NISO Open Access Business Processes Working Group

This paper is based on a lively discussion panel presented at the 2024 Charleston Conference on November 14, 2024, and offers perspectives from four members of the NISO Open Access Business Processes (OABP) Working Group on the current gaps in the workflows that support open access business models. The authors—representing library, consortium, infrastructure provider, and publisher stakeholders—provide insight on emerging best practices and the forthcoming NISO Recommended Practice on operationalizing open access business processes.Publisher allows immediate open acces

The Columbus Tree Coalition Plan: Increasing Tree Equity on Private Property

Course Code: ENR 4900.01Green Columbus is a non-profit that strives to improve equitable tree canopy cover and strengthen communities with low tree equity in Columbus. This organization has been an integral part of tree planting in Columbus, especially in the communities that need it most. Green Columbus has recently been tasked with developing the Columbus Tree Coalition (CTC) as detailed in the Columbus Urban Forestry Master Plan (CUFMP), the City of Columbus’ plan to invest in expanding Columbus’ tree canopy cover to 40% by 2050. The CTC specifically focuses on increasing tree canopy cover on private property. Our capstone group aimed to develop products for Green Columbus that would assist them in determining an effective structure for the CTC, conducting benchmarking research, and providing Columbus residents living in low tree equity communities with resources to plant trees on their properties.Academic Major: Environmental ScienceAcademic Major: Geograph

Influence of Feeding Frequency on Ingestion and Elimination Patterns and Total Plasma Protein of Horses

Horses are natural grazers, typically spending about 10-15 hours per day foraging. The purpose of this study, which is part of a larger study, was to investigate the influence of feedingfrequency on ingestive and eliminative behaviors, as well as total plasma protein (TPP) concentrations in horses. Horses (n = 12) were stratified by age, body condition score (BCS), breed, and sex across two equal sets with a randomized order of treatments. Each treatment was given for 1 week, with 24-hr observations being taken on the 6th day and blood samples being taken on the 7th to allow for acclimation. Water was provided ad libitum, grass hay was provided in slow feed nets and given at 1.55% body weight (BW) on a DM basis, and concentrate was fed at 0.45% BW. The treatments were one (1x), two (2x), and three meals per day (3x), where meals comprised of both forage and commercial pellets split equally across feeding times. Feeding times were 0800, 0800 and 1800, and 0800, 1300, and 1800 h for 1x, 2x, and 3x, respectively. Behaviors were recorded for 24 continuous hours via cameras that were placed so that the entire stall could be viewed. Ingestive and elimination data were extracted from a larger data set of horse behaviors transcribed in Microsoft Excel. Averages for the ingestive behavior of 6 horses with completed 24-hour data sets were extracted from each feeding frequencies for analysis. These values are expressed as a percentage of 24 hr and number of occurrences(frequency). Serial plasma samples were collected from the horses (n = 12) relative to their morning meal on day 7 of each treatment. TPP was determined via refractometer. SAS 9.4 was used to determine the effects of treatment on the duration and frequency of behaviors, as well as the effects of feeding frequency on the TPP within blood. Hay ingestion behavior was significantly influenced by the feeding frequency, with horses on the 2x treatment eating hay more frequently and for a longer duration than when fed 3x (P < 0.05). Additionally, 1x had a lower duration of hay consumption than 3x (P = 0.03). Concentrate intake duration was similaracross treatments, while water intake frequency was the lowest when the horses were fed 3x, compared to 1x and 2x. These results show that feeding frequency primarily affects the pattern of intake, rather than actual nutrient consumption. The TPP increased approximately 30 minutes after the meal, which was followed by a decline of the values back towards baseline from 60-180 minutes. There was no significant effect of feeding frequency on TPP (P = 0.47), but there was a significant effect of time on TPP values (P < 0.0001). Future studies should focus on circadian rhythm patterns, actual consumption of forage and water, and the composition of feces in relation to different feeding frequencies.Ohio State ATI’s Research, Creative & Other Scholarly Activities (RCOSA) grantBuckeye NutritionA one-year embargo was granted for this item.Academic Major: Animal Science