Professor CHRISTOPHER HUDSON's Outputs (49)

Stochastic simulation modeling of the economics of providing additional living space for housed dairy cows (2024)
Journal Article
Thompson, J. S., Hudson, C. D., Huxley, J. N., Kaler, J., & Green, M. J. (2024). Stochastic simulation modeling of the economics of providing additional living space for housed dairy cows. Frontiers in Veterinary Science, 11, https://doi.org/10.3389/fvets.2024.1473696

The housed environment for dairy cattle is of critical importance to their health, wellbeing, and productivity. Lack of space is an important factor for housing quality assessment due to links with increased likelihood of disease. A recently publishe... Read More about Stochastic simulation modeling of the economics of providing additional living space for housed dairy cows.

Predictive models for the implementation of targeted reproductive management in multiparous cows on automatic milking systems (2024)
Journal Article
Hannon, F. P., Green, M. J., O'Grady, L., Hudson, C., Gouw, A., & Randall, L. V. (2025). Predictive models for the implementation of targeted reproductive management in multiparous cows on automatic milking systems. Journal of Dairy Science, 108(2), 1634-1643. https://doi.org/10.3168/jds.2024-24920

Targeted reproductive management (TRM) aims to improve the fertility efficiency of the dairy herd by applying group-level management strategies based on expected reproductive performance. Key to the utility of TRM is the accuracy with which an animal... Read More about Predictive models for the implementation of targeted reproductive management in multiparous cows on automatic milking systems.

Modelling the impact of wastewater flows and management practices on antimicrobial resistance in dairy farms (2024)
Journal Article
Todman, H., Helliwell, R., King, L., Blanchard, A., Gray-Hammerton, C. J., Hooton, S. P., Baker, M., Margerison, J., Wilson, P., Dodd, C. E. R., Morris, C., Raman, S., Hudson, C., Kreft, J.-U., Hobman, J. L., Kypraios, T., & Stekel, D. J. (2024). Modelling the impact of wastewater flows and management practices on antimicrobial resistance in dairy farms. npj Antimicrobials & Resistance, 2(1), Article 13. https://doi.org/10.1038/s44259-024-00029-4

Dairy slurry is a major source of environmental contamination with antimicrobial resistant genes and bacteria. We developed mathematical models and conducted on-farm research to explore the impact of wastewater flows and management practices on antim... Read More about Modelling the impact of wastewater flows and management practices on antimicrobial resistance in dairy farms.

Predictive modelling of deviation from expected milk yield in transition cows on automatic milking systems (2024)
Journal Article
Hannon, F. P., Green, M. J., O’Grady, L., Hudson, C., Gouw, A., & Randall, L. V. (2024). Predictive modelling of deviation from expected milk yield in transition cows on automatic milking systems. Preventive Veterinary Medicine, 225, Article 106160. https://doi.org/10.1016/j.prevetmed.2024.106160

The transition period is a pivotal time in the production cycle of the dairy cow. It is estimated that between 30% and 50% of all cows experience metabolic or infectious disease during this time. One of the most common and economically consequential... Read More about Predictive modelling of deviation from expected milk yield in transition cows on automatic milking systems.

Associations between Johne’s disease and fertility in UK dairy herds (2023)
Journal Article
Reynolds, J. A., Bradley, A. J., Sherwin, V. E., Remnant, J. G., & Hudson, C. D. (2023). Associations between Johne’s disease and fertility in UK dairy herds. Veterinary Journal, 298-299, Article 106015. https://doi.org/10.1016/j.tvjl.2023.106015

The objective of this observational study was to quantify associations between Mycobacterium avium subspecies paratuberculosis (MAP) antibody status and a variety of fertility outcomes, in UK dairy cattle. Longitudinal milk recording, fertility and M... Read More about Associations between Johne’s disease and fertility in UK dairy herds.

Herd health: approach to assessing fertility data quality (2023)
Journal Article
Reynolds, J., & Hudson, C. (2023). Herd health: approach to assessing fertility data quality. In Practice, 45(4), 222-230. https://doi.org/10.1002/inpr.311

Background: Farm animal veterinarians are increasingly using routinely collected farm data to assess performance and enable implementation of preventive management changes on farm. Furthermore, the significance of data collection and data management... Read More about Herd health: approach to assessing fertility data quality.

Hoof lesions in partly housed pasture-based dairy cows (2022)
Journal Article
Browne, N., Hudson, C., Crossley, R., Sugrue, K., Huxley, J., & Conneely, M. (2022). Hoof lesions in partly housed pasture-based dairy cows. Journal of Dairy Science, 105(11), 9038-9053. https://doi.org/10.3168/jds.2022-22010

Lameness is a symptom of a painful disorder affecting the limbs, which impacts dairy cow welfare and productivity. Lameness is primarily caused by hoof lesions. The prevalence of different lesion types can differ depending on environmental conditions... Read More about Hoof lesions in partly housed pasture-based dairy cows.

Antimicrobial resistance in dairy slurry tanks: a critical point for measurement and control (2022)
Journal Article
Baker, M., Williams, A. D., Hooton, S. P., Helliwell, R., King, E., Dodsworth, T., María Baena-Nogueras, R., Warry, A., Ortori, C. A., Todman, H., Gray-Hammerton, C. J., C. W. Pritchard, A., Iles, E., Cook, R., Emes, R. D., Jones, M. A., Kypraios, T., West, H., Barrett, D. A., Ramsden, S. J., …Stekel, D. J. (2022). Antimicrobial resistance in dairy slurry tanks: a critical point for measurement and control. Environment International, 169, Article 107516. https://doi.org/10.1016/j.envint.2022.107516

Waste from dairy production is one of the largest sources of contamination from antimicrobial resistant bacteria (ARB) and genes (ARGs) in many parts of the world. However, studies to date do not provide necessary evidence to inform antimicrobial res... Read More about Antimicrobial resistance in dairy slurry tanks: a critical point for measurement and control.

Lameness prevalence and management practices on Irish pasture-based dairy farms (2022)
Journal Article
Browne, N., Hudson, C. D., Crossley, R. E., Sugrue, K., Kennedy, E., Huxley, J. N., & Conneely, M. (2022). Lameness prevalence and management practices on Irish pasture-based dairy farms. Irish Veterinary Journal, 75, Article 14. https://doi.org/10.1186/s13620-022-00221-w

Background: Lameness is a painful disease, which negatively impacts dairy cow production and welfare. The aim of this observational study was to determine herd lameness prevalence, describe current lameness management practices and identify the prese... Read More about Lameness prevalence and management practices on Irish pasture-based dairy farms.

Use of Non-Steroidal Anti-Inflammatory Drugs and Attitudes to Pain in Pasture-Based Dairy Cows: A Comparative Study of Farmers and Veterinarians (2022)
Journal Article
Browne, N., Conneely, M., & Hudson, C. (2022). Use of Non-Steroidal Anti-Inflammatory Drugs and Attitudes to Pain in Pasture-Based Dairy Cows: A Comparative Study of Farmers and Veterinarians. Frontiers in Veterinary Science, 9, Article 912564. https://doi.org/10.3389/fvets.2022.912564

Pain is a significant welfare concern within the dairy industry. Recognizing and managing pain are important factors for safeguarding animal welfare. A questionnaire was sent via post to Irish dairy farmers and large animal veterinarians to assess at... Read More about Use of Non-Steroidal Anti-Inflammatory Drugs and Attitudes to Pain in Pasture-Based Dairy Cows: A Comparative Study of Farmers and Veterinarians.

A randomised controlled trial to evaluate the impact of indoor living space on dairy cow production, reproduction and behaviour (2022)
Journal Article
Thompson, J. S., Hudson, C. D., Huxley, J. N., Kaler, J., Robinson, R. S., Woad, K. J., Bollard, N., Gibbons, J., & Green, M. J. (2022). A randomised controlled trial to evaluate the impact of indoor living space on dairy cow production, reproduction and behaviour. Scientific Reports, 12(1), Article 3849. https://doi.org/10.1038/s41598-022-07826-9

As a global society, we have a duty to provide suitable care and conditions for farmed livestock to protect animal welfare and ensure the sustainability of our food supply. The suitability and biological impacts of housing conditions for intensively... Read More about A randomised controlled trial to evaluate the impact of indoor living space on dairy cow production, reproduction and behaviour.

The effect of environmental temperature on average daily gain in preweaned calves: A randomized controlled trial and Bayesian analysis (2022)
Journal Article
Hyde, R. M., Green, M. J., Hudson, C., & Down, P. M. (2022). The effect of environmental temperature on average daily gain in preweaned calves: A randomized controlled trial and Bayesian analysis. Journal of Dairy Science, 105(4), 3430-3439. https://doi.org/10.3168/jds.2021-21199

Neonatal calves are relatively susceptible to heat loss, and previous research suggests that reduced environmental temperatures are associated with reduced average daily gain (ADG) during the preweaning phase. Current methods of mitigating negative e... Read More about The effect of environmental temperature on average daily gain in preweaned calves: A randomized controlled trial and Bayesian analysis.

Preventive hoof trimming in dairy cattle: Determining current practices and identifying future research areas (2022)
Journal Article
Pedersen, S. I., I. L. Pedersen, S., N. Huxley, J., D. Hudson, C., J. Green, M., & J. Bell, N. (2022). Preventive hoof trimming in dairy cattle: Determining current practices and identifying future research areas. Veterinary Record, https://doi.org/10.1002/vetr.1267

Background: The extent to which preventive hoof trimming is implemented on Great Britain's (GB) dairy farms is unknown. The aims of this study were to determine common practices and capture producers’ input on key areas that require further research.... Read More about Preventive hoof trimming in dairy cattle: Determining current practices and identifying future research areas.

Cow- and herd-level risk factors for lameness in partly housed pasture-based dairy cows (2021)
Journal Article
Browne, N., Hudson, C., Crossley, R., Sugrue, K., Kennedy, E., Huxley, J., & Conneely, M. (2022). Cow- and herd-level risk factors for lameness in partly housed pasture-based dairy cows. Journal of Dairy Science, 105(2), 1418-1431. https://doi.org/10.3168/jds.2021-20767

Lameness in dairy cows is a major animal welfare concern and has substantial economic impact through reduced production and fertility. Previous risk factor analyses have focused on housed systems, rather than those where cows were grazed for the majo... Read More about Cow- and herd-level risk factors for lameness in partly housed pasture-based dairy cows.

Improving growth rates in preweaning calves on dairy farms: A randomized controlled trial (2021)
Journal Article
Hyde, R. M., Green, M. J., Hudson, C., & Down, P. M. (2022). Improving growth rates in preweaning calves on dairy farms: A randomized controlled trial. Journal of Dairy Science, 105(1), 782-792. https://doi.org/10.3168/jds.2021-20947

Previous research has identified key factors associated with improved average daily gain (ADG) in preweaning dairy calves and these factors have been combined to create a web app–based calf health plan (www.nottingham.ac.uk/herdhealthtoolkit). A rand... Read More about Improving growth rates in preweaning calves on dairy farms: A randomized controlled trial.

Practical data skills for the farm animal vet (2021)
Journal Article
Hyde, R., Green, M., Hudson, C., & Remnant, J. (2021). Practical data skills for the farm animal vet. In Practice, 43(5), 257-268. https://doi.org/10.1002/inpr.53

Background: While farm animal veterinarians receive extensive training in the diagnosis and treatment of individual animals, population medicine or ‘herd health’ has also become commonplace in modern production animal veterinary medicine. Clinicians... Read More about Practical data skills for the farm animal vet.

From the other perspective: Behavioural factors associated with UK sheep farmers’ attitudes towards antibiotic use and antibiotic resistance (2021)
Journal Article
Doidge, C., Lima, E., Lovatt, F., Hudson, C., & Kaler, J. (2021). From the other perspective: Behavioural factors associated with UK sheep farmers’ attitudes towards antibiotic use and antibiotic resistance. PLoS ONE, 16(5), Article e0251439. https://doi.org/10.1371/journal.pone.0251439

Research suggests that many sheep farmers continue to carry out traditional antibiotic use practices despite new’good practice’ recommendations. The aim of this study was to group farmers depending on their attitudes around antibiotic use and antibio... Read More about From the other perspective: Behavioural factors associated with UK sheep farmers’ attitudes towards antibiotic use and antibiotic resistance.

Assessing the feasibility of retrospective and prospective clinical audit in farm animal veterinary practice (2021)
Journal Article
Waine, K., White, C., Dean, R. S., Hudson, C., Huxley, J. N., & Brennan, M. L. (2021). Assessing the feasibility of retrospective and prospective clinical audit in farm animal veterinary practice. Veterinary Sciences, 8(4), Article 62. https://doi.org/10.3390/vetsci8040062

As a quality improvement tool, clinical audit has been extensively described in the medical literature. There is scant literature on the use of clinical audit in the farm animal veterinary setting. This study describes the process and feasibility of... Read More about Assessing the feasibility of retrospective and prospective clinical audit in farm animal veterinary practice.

Factors associated with daily weight gain in preweaned calves on dairy farms (2021)
Journal Article
Down, P. M., Hudson, C., Green, M. J., & Hyde, R. M. (2021). Factors associated with daily weight gain in preweaned calves on dairy farms. Preventive Veterinary Medicine, 190, Article 105320. https://doi.org/10.1016/j.prevetmed.2021.105320

The preweaning period is vital in the development of calves on dairy farms and improving daily liveweight gain (DLWG) is important to both financial and carbon efficiency; minimising rearing costs and improving first lactation milk yields. In order t... Read More about Factors associated with daily weight gain in preweaned calves on dairy farms.

Quantitative Analysis of Colostrum Bacteriology on British Dairy Farms (2020)
Journal Article
Hyde, R. M., Green, M. J., Hudson, C., & Down, P. M. (2020). Quantitative Analysis of Colostrum Bacteriology on British Dairy Farms. Frontiers in Veterinary Science, 7, Article 601227. https://doi.org/10.3389/fvets.2020.601227

© Copyright © 2020 Hyde, Green, Hudson and Down. Total bacterial counts (TBC) and coliform counts (CC) were estimated for 328 colostrum samples from 56 British dairy farms. Samples collected directly from cows' teats had lower mean TBC (32,079) and C... Read More about Quantitative Analysis of Colostrum Bacteriology on British Dairy Farms.