Article
Veterinary Sciences
M. B. Sadiq, S. Z. Ramanoon, W. M. Shaik Mossadeq, R. Mansor, S. S. Syed-Hussain
Summary: This study compared the impact of different hoof trimming methods on lameness and lesion prevalence in dairy cows, finding that the adaptation method reduced the risk of lameness during lactation. Proper management of under-conditioned cows is equally important in preventing lameness.
PREVENTIVE VETERINARY MEDICINE
(2021)
Article
Veterinary Sciences
Mohammed B. Sadiq, Siti Z. Ramanoon, Wan Mastura M. Shaik Mossadeq, Rozaihan Mansor, Sharifah S. Syed-Hussain
Summary: The study found that implementing proper hoof trimming techniques during lactation can help reduce the risk of lameness and hoof lesions in dairy cows. Maintaining good body condition and preventing hock injuries are also important factors to consider for dairy cow welfare.
FRONTIERS IN VETERINARY SCIENCE
(2021)
Article
Veterinary Sciences
Chacha W. Werema, Linda J. Laven, Kristina R. Mueller, Richard A. Laven
Summary: This study evaluated the effects of claw trimming on pasture-based cows and found that there was no effect on sole thickness and locomotion scores over time. The results suggest that using the Dutch method for trimming hooves in pasture-based cattle does not alter sole thickness in the medium-to-long term.
VETERINARY SCIENCES
(2023)
Article
Agriculture, Dairy & Animal Science
M. B. Sadiq, S. Z. Ramanoon, W. M. Shaik Mossadeq, R. Mansor, S. S. Syed-Hussain
Summary: This study aimed to describe the prevalence of hoof lesions and their association with lameness in dairy cows in Peninsular Malaysia. Various risk factors at both cow and farm levels were identified, providing valuable information for dairy farmers to manage specific hoof lesions causing lameness effectively.
Article
Veterinary Sciences
Sara I. L. Pedersen, Jonathan N. Huxley, Chris D. Hudson, Martin J. Green, Nicholas J. Bell
Summary: Preventive hoof trimming is common on GB dairy farms, mainly carried out during drying off period. External hoof trimmers and farm staff are the most common trimmers. Key concerns revolve around optimal trimming timing, frequency, and method.
Article
Agriculture, Dairy & Animal Science
Marina Lansarini Antonioli, Paulo Alescio Canola, Julia Ribeiro Garcia de Carvalho, Mayara Goncalves Fonseca, Guilherme de Camargo Ferraz
Summary: Trimming horses' hooves directly affects hoof structures and limb joints, but the immediate effect is not well understood. This study investigated the immediate effect of trimming on hoof structures and thoracic limb joint angles. The study found differences in hoof length, toe angle, heel angle, medial heel height, and metacarpophalangeal angle after trimming, indicating the immediate effect of the procedure. Correlations were also found between trimming and proximal joint angles. Understanding the effects of trimming on hoof and limb conformation is important for improving the health and performance of athletic horses.
Article
Agriculture, Dairy & Animal Science
R. C. Joubert, H. F. Strydom, E. van Marle-Koster
Summary: Claw lesions in dairy cows play a significant role in causing lameness and welfare concerns. This study analyzed claw-trimming data from dairy farms in South Africa to examine the occurrence and recording of claw lesions in Holstein cattle. The results highlight the complexity of lesion data and suggest the need to simplify the recording and categorization of claw lesions to aid in the prevention and treatment of lameness.
TROPICAL ANIMAL HEALTH AND PRODUCTION
(2023)
Article
Veterinary Sciences
N. Capion, P. Raundal, L. Foldager, P. T. Thomsen
Summary: This study focused on Danish claw trimmers' digital recording of claw health during trimming and the prevalence of digital dermatitis (DD), interdigital hyperplasia (IH), sole ulcer (SU), and white line abscess (WLA). Data from 705,803 animals from 1635 herds over a 5-year period were included in the dataset, showing a stable prevalence of DD and an increasing prevalence of IH, SU, and WLA with increasing parity. The digital recording of claw lesions is considered a good indicator of claw health, with DD recorded in 95% of herds in 2017.
VETERINARY JOURNAL
(2021)
Article
Agriculture, Dairy & Animal Science
N. Browne, C. D. Hudson, R. E. Crossley, K. Sugrue, J. N. Huxley, M. Conneely
Summary: This study aims to investigate the causes and risk factors for lameness in partly housed, pasture-based dairy cows, and found that noninfectious lesions are more prevalent than infectious lesions, while also identifying correlations between different types of lesions.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Veterinary Sciences
G. Strauss, D. Stucki, A. Jury, I. Locher, C. Syring, M. Ruiters, A. Steiner
Summary: The main goal of the research project is to establish a Swiss national claw health monitoring programme for cattle. In the course of the project, 30 claw trimmers have been trained and evaluated for their abilities in identifying and classifying foot and claw disorders. The newly developed training concept has shown substantial agreement and suitability to establish the monitoring programme.
SCHWEIZER ARCHIV FUR TIERHEILKUNDE
(2021)
Article
Agriculture, Dairy & Animal Science
M. T. Jewell, M. Cameron, S. L. McKenna, M. S. Cockram, J. Sanchez, G. P. Keefe
Summary: Foot pain may affect gait, but not all hoof lesions lead to visible changes in a cow's gait. Gait scoring in tiestall facilities can be challenging, so stall lameness scoring can be an alternative method to assess lameness in cattle. The study found that hoof lesions may be related to behavioral indicators in cows, with certain behaviors indicating a higher likelihood of hind limb hoof lesions.
JOURNAL OF DAIRY SCIENCE
(2021)
Article
Agriculture, Dairy & Animal Science
J. E. French, R. D. Matson, J. J. Thomason, T. C. Wright, V. R. Osborne
Summary: The objective of this study was to investigate the impact and slide of cows walking on different flooring surfaces commonly used in Ontario dairy farms. The results showed that the type of flooring surface significantly affected hoof impact and slide, indicating the need to consider these factors in future studies.
JOURNAL OF DAIRY SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
L. E. Deeming, N. J. Beausoleil, K. J. Stafford, J. R. Webster, N. Cox, G. Zobel
Summary: This study aimed to evaluate the long-term effects of two different hoof trimming start times and investigate the pattern of hoof growth across the first two years of life. The results showed that starting hoof trimming earlier had minor and inconsistent effects on hoof growth rate, and it was unable to prevent hoof overgrowth, poor conformation, and detrimental changes in joint positions. Therefore, trimming frequency and age of first trimming should be considered when devising hoof care protocols for dairy goats housed in environments that do not offer opportunities for natural hoof wear.
JOURNAL OF DAIRY SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
Johann Kofler, Michael Hoefler, Thomas Hartinger, Ezequias Castillo-Lopez, Johann Huber, Alexander Tichy, Nicole Reisinger, Qendrim Zebeli
Summary: This study investigated the impact of different levels of diet-induced subacute rumen acidosis (SARA) on claw health in 24 first-lactation Holstein cows during early lactation. Claw health was monitored through recording claw lesions and assessing locomotion scores at multiple time points. The severity of SARA was determined based on continuous pH measurements. The study found that a higher severity of SARA was associated with an increased lameness incidence, but no significant effect was observed on locomotion scores and claw lesion prevalence.
Article
Agriculture, Dairy & Animal Science
E. M. Wynands, L. S. Caixeta, G. Cramer
Summary: This observational cohort study aimed to estimate the impact of hyperketonemia on sole ulcers and white line hoof lesions in dairy cows. The results showed that hyperketonemia likely has a limited role in the development of these hoof conditions in cows during pre- and post-calving hoof trims.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Agriculture, Dairy & Animal Science
I. J. Lean, S. J. LeBlanc, D. B. Sheedy, T. Duffield, J. E. P. Santos, H. M. Golder
Summary: Data from three countries were analyzed to evaluate the association between parity and disease in Holstein cows. The study found that higher parity was associated with increased disease risk and changes in metabolite concentrations.
JOURNAL OF DAIRY SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
Bruna Mion, Lori Ogilvie, Bryn Van Winters, Jose F. W. Spricigo, Sanjana Anan, Melissa Duplessis, Brian W. McBride, Stephen J. LeBlanc, Michael A. Steele, Eduardo de Souza Ribeiro
Summary: Complete replacement of inorganic salts of trace minerals by organic trace minerals altered concentrations of selenium and cobalt in circulation, supported liver and hoof health, and reduced the risk of postpartum elevated nonesterified fatty acids.
JOURNAL OF ANIMAL SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
Jennifer A. Ida, Warren M. Wilson, Daryl V. Nydam, S. Craig Gerlach, John P. Kastelic, Elizabeth R. Russell, Kayley D. McCubbin, Cindy L. Adams, Herman W. Barkema
Summary: This study conducted ethnographic fieldwork to investigate dairy farmers' understanding of antimicrobial use (AMU), antimicrobial resistance (AMR), and related regulations in Alberta, Canada. The findings revealed that many farmers value their autonomy in AMU decision-making, have shared cultural and immigrant identities that shape their perspectives, and believe that certain AMU policies implemented in other contexts would be impractical and constrain their freedom. They also expressed concerns about being undervalued by consumers and policy makers, and worry that public understanding of dairy farming may lead to misguided AMU policies. Additionally, there is a variable skepticism among farmers regarding the link between AMU in dairy cattle and AMR in humans. A better understanding of the sociocultural and political-economic factors underlying these perceptions is important for improving AMU stewardship and future policies.
JOURNAL OF DAIRY SCIENCE
(2023)
Review
Agriculture, Dairy & Animal Science
Ellen de Jong, Lien Creytens, Sarne De Vliegher, Kayley D. Mccubbin, Mya Baptiste, Alexander A. Leung, David Speksnijder, Simon Dufour, John R. Middleton, Pamela L. Ruegg, Theo J. G. M. Lam, David F. Kelton, Scott Mcdougall, Sandra M. Godden, Alfonso Lago, Paeivi J. Rajala-Schultz, Karin Orsel, Volker Kroemker, John P. Kastelic, Herman W. Barkema
Summary: In the treatment of clinical mastitis, selective treatment protocols have been found to be noninferior to blanket treatment protocols in terms of bacteriological cure. However, the impacts on clinical cure, new infections, somatic cell count, milk yield, recurrence, and culling are still inconclusive. A systematic review of 13 studies suggests that, except for clinical cure, a selective treatment protocol does not adversely affect other outcome measures. Further research with better randomization is needed to confirm these findings.
JOURNAL OF DAIRY SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
I. J. Lean, H. M. Golder, S. J. LeBlanc, T. Duffield, J. E. P. Santos
Summary: In this retrospective meta-analysis, individual cow data was used to assess the associations between parity, level of production, and pasture-based or intensively fed systems with fertility. The study found that parity and milk production measures had significant effects on reproductive outcomes. Differences in production systems also influenced reproductive measures.
JOURNAL OF DAIRY SCIENCE
(2023)
Article
Multidisciplinary Sciences
Arne W. Vanhoudt, Casey Jacobs, Maaike Caron, Herman Barkema, Mirjam Nielen, Tine van Werven, Karin Orsel
Summary: The primary aim of this study was to test the association between infrared thermography (IRT) and painful M2 lesions on unwashed hind feet. The results showed that higher IRTmax on unwashed hind feet were associated with M2 lesions or DD lesions. However, IRTmax alone may not be reliable for automated detection of feet with an M2 lesion. IRTmax can, however, be used to identify feet at-risk for compromised foot health and aid in the automated monitoring of foot health on dairy herds.
Article
Agriculture, Dairy & Animal Science
H. M. Golder, S. J. LeBlanc, T. Duffield, H. A. Rossow, R. Bogdanich, L. Hernandez, E. Block, J. Rehberger, A. H. Smith, J. Thomson, I. J. Lean
Summary: This study conducted a multicenter observational study on early lactation Holstein cows from Australia, California, and Canada to examine their acidosis risk. The results showed that the characteristics of rumen fluid, bacterial composition, milk production, and acidosis risk varied among cows fed different diets.
JOURNAL OF DAIRY SCIENCE
(2023)
Review
Developmental Biology
Osvaldo Bogado Pascottini, Stephen J. LeBlanc, Giovanni Gnemi, Jo L. M. R. Leroy, Geert Opsomer
Summary: Up to half of dairy cows may develop reproductive tract inflammatory diseases within 5 weeks after calving. Clinical endometritis (CE) is caused by uterine bacterial dysbiosis, leading to epithelial damage and subsequent neutrophil migration and pyogenesis. Subclinical endometritis (SCE) is characterized by asymptomatic uterine disease with increased neutrophils, but without bacterial dysbiosis. This review explores the factors contributing to the development of CE and SCE in postpartum dairy cows, including metabolic stress, innate immune dysfunction, and changes in uterine microbiota composition.
Article
Microbiology
Yushan Lin, Jinge Han, Herman W. Barkema, Yue Wang, Jian Gao, John P. Kastelic, Bo Han, Shunyi Qin, Zhaoju Deng
Summary: This study provides important genomic insights into the bovine mastitis pathogen Lactococcus garvieae, revealing diverse genetic features and potential host adaptations.
MICROBIOLOGY SPECTRUM
(2023)
Review
Agriculture, Dairy & Animal Science
Stephen J. LeBlanc
Summary: This paper reviews recent data and concepts on metritis, purulent vaginal discharge, and endometritis in dairy cows and their impact on reproductive performance. It discusses the causes, diagnosis, and treatment of these diseases, as well as the potential for improved management strategies.
Article
Agriculture, Dairy & Animal Science
B. Mion, G. Madureira, J. F. W. Spricigo, K. King, B. Van Winters, J. LaMarre, S. J. LeBlanc, M. A. Steele, E. S. Ribeiro
Summary: This study aimed to evaluate the effects of replacing inorganic trace minerals (STM) with organic trace minerals (OTM) on ovarian dynamics, estrous behavior, preimplantation conceptus development, and reproductive performance in dairy cows. The results showed that replacing STM with OTM resulted in modest improvements in ovarian cyclicity and conceptus development, but did not affect conception risk and pregnancy rate.
JOURNAL OF DAIRY SCIENCE
(2023)
Article
Multidisciplinary Sciences
Claudia Cobo-Angel, Steven M. Roche, Stephen J. LeBlanc
Summary: This study aimed to investigate the factors influencing dairy cattle veterinarians' prescribing of antimicrobials and their attitudes towards reducing antimicrobial use in the dairy industry. The study found that veterinarians have to consider various factors and face conflicts when making prescribing decisions. Younger veterinarians showed higher awareness of antimicrobial resistance but also experienced more pressure to comply with farmers' wishes.
Article
Veterinary Sciences
Mariana Fonseca, Luke C. Heider, Henrik Stryhn, J. Trenton McClure, David Leger, Daniella Rizzo, Landon Warder, Simon Dufour, Jean-Philippe Roy, David F. Kelton, David Renaud, Herman W. Barkema, Javier Sanchez
Summary: In this study, AMR proportions in fecal E. coli were described, and the relationship between AMU and AMR/MDR in Canadian dairy farms was investigated. The results showed that systemic AMU was associated with increased E. coli resistance, and factors such as study year, production age, and farm manure storage also influenced antimicrobial resistance.
PREVENTIVE VETERINARY MEDICINE
(2023)
Article
Genetics & Heredity
Farzad Ghafouri, Mostafa Sadeghi, Abolfazl Bahrami, Masoumeh Naserkheil, Vahid Dehghanian Reyhan, Arash Javanmard, Seyed Reza Miraei-Ashtiani, Soheila Ghahremani, Herman W. Barkema, Rostam Abdollahi-Arpanahi, John P. Kastelic
Summary: In this study, scRNA-seq was used to compare the transcriptomes of granulosa cells from high- and low-fertility goats, leading to the identification of 150 differentially expressed genes. A ceRNA regulatory network was constructed to further explore the molecular mechanisms underlying goat fertility. These findings provide important insights into the genetic basis and ovarian follicular development of fertility in female goats.
FRONTIERS IN GENETICS
(2023)
Article
Agriculture, Dairy & Animal Science
Vahid Dehghanian Reyhan, Farzad Ghafouri, Mostafa Sadeghi, Seyed Reza Miraei-Ashtiani, John P. Kastelic, Herman W. Barkema, Masoud Shirali
Summary: This study integrated comparative transcriptomic and competing endogenous RNA (ceRNA) network analyses to identify candidate messenger RNAs (mRNAs) and regulatory RNAs associated with intramuscular fat content (IMF) and fat metabolism in beef cattle. The results identified key metabolic-signaling pathways and genes involved in fat metabolism and highlighted the molecular factors underlying beef cattle breed differences in IMF. This research provides valuable insights for marker-assisted selection and understanding the regulatory mechanisms of IMF in beef cattle.