Gerrit Koop
YOU?
Author Swipe
View article: Correction: Pathogen group-specific risk factors for intramammary infection in water buffalo
Correction: Pathogen group-specific risk factors for intramammary infection in water buffalo Open
[This corrects the article DOI: 10.1371/journal.pone.0299929.].
View article: The effect of floor type on the welfare of intensively housed goats: A review
The effect of floor type on the welfare of intensively housed goats: A review Open
View article: Effect of bluetongue serotype 3 vaccines on probability of viremia and NSAID usage in Dutch dairy cattle herds
Effect of bluetongue serotype 3 vaccines on probability of viremia and NSAID usage in Dutch dairy cattle herds Open
Introduction After the outbreak of bluetongue serotype 3 (BTV3) in The Netherlands in September 2023, three pharmaceutical companies developed inactivated vaccines against this newly emerged serotype in a short period of time, making it po…
View article: A systematic review and meta-analysis of lameness scoring methods and the prevalence of lameness of dairy cows in Northwest Europe
A systematic review and meta-analysis of lameness scoring methods and the prevalence of lameness of dairy cows in Northwest Europe Open
Lameness in dairy cows, linked to claw disorders and pain, is a major welfare concern. Studies worldwide use various scoring methods, resulting in differing prevalences. To address this, we developed a 3-level comparative locomotion scale …
View article: Individual goats can be super shedders of Staphylococcus lugdunensis and Staphylococcus simulans
Individual goats can be super shedders of Staphylococcus lugdunensis and Staphylococcus simulans Open
The bulk milk total bacterial count (BMTBC) is a key milk quality indicator because bacterial byproducts reduce the shelf life of milk and dairy products and increase the risk of bacterial overgrowth before consumption. Exceeding BMTBC lim…
View article: Foodborne bacteria in milk and milk products along the water buffalo milk chain in Bangladesh
Foodborne bacteria in milk and milk products along the water buffalo milk chain in Bangladesh Open
View article: Total bacterial count and somatic cell count in bulk and individual goat milk around kidding: Two longitudinal observational studies
Total bacterial count and somatic cell count in bulk and individual goat milk around kidding: Two longitudinal observational studies Open
Total bacterial count (TBC) and SCC are important quality parameters in goat milk. Exceeding the bulk milk TBC (BMTBC) thresholds leads to price penalties for Dutch dairy goat farmers. Controlling these milk quality parameters can be chall…
View article: Pathogen group-specific risk factors for intramammary infection in water buffalo
Pathogen group-specific risk factors for intramammary infection in water buffalo Open
A cross-sectional study was conducted to estimate the prevalence of intramammary infection (IMI) associated bacteria and to identify risk factors for pathogen group-specific IMI in water buffalo in Bangladesh. A California Mastitis Test (C…
View article: Prevalence of foodborne zoonotic pathogens in milk and milk products along the water buffalo milk value chain in Bangladesh
Prevalence of foodborne zoonotic pathogens in milk and milk products along the water buffalo milk value chain in Bangladesh Open
Buffalo milk and milk products are considered highly valued due to their superior nutritional quality and health benefits. Therefore, assessing the prevalence of zoonotic pathogens in buffalo milk is crucial for ensuring the safety of the …
View article: The effects of an inactivated vaccine against Staphylococcus spp. on udder health in primiparous dairy goats: A randomized controlled trial
The effects of an inactivated vaccine against Staphylococcus spp. on udder health in primiparous dairy goats: A randomized controlled trial Open
Staphylococci are the primary pathogens causing clinical and subclinical mastitis in dairy goats. This randomized controlled trial (RCT) evaluates the impact of vaccination with VIMCO® (Hipra, Girona, Spain) on clinical mastitis (CM), gang…
View article: Evaluation of Bayesian Hui-Walter and logistic regression latent class models to estimate diagnostic test characteristics with simulated data
Evaluation of Bayesian Hui-Walter and logistic regression latent class models to estimate diagnostic test characteristics with simulated data Open
Estimation of the accuracy of diagnostic tests in the absence of a gold standard is an important research subject in epidemiology (Dohoo et al., 2009). One of the most used methods the last few decades is the Bayesian Hui-Walter (HW) laten…
View article: Sustainable Ruminant Health at Utrecht University
Sustainable Ruminant Health at Utrecht University Open
View article: Colonization of Extramammary Sites with Mastitis-Associated S. aureus Strains in Dairy Goats
Colonization of Extramammary Sites with Mastitis-Associated S. aureus Strains in Dairy Goats Open
Staphylococcus aureus (S. aureus), a major mastitis pathogen in dairy goats, is classified as a contagious pathogen. Although previous research has shown that extramammary body sites can be colonized with S. aureus, it is unknown whether t…
View article: The prevalence and risk factors of subclinical mastitis in water buffalo (Bubalis bubalis) in Bangladesh
The prevalence and risk factors of subclinical mastitis in water buffalo (Bubalis bubalis) in Bangladesh Open
View article: Association of Staphylococcus aureus genotypes with milk or colonization of extramammary sites in Dutch dairy cattle indicates strain variation in reservoirs for intramammary infections
Association of Staphylococcus aureus genotypes with milk or colonization of extramammary sites in Dutch dairy cattle indicates strain variation in reservoirs for intramammary infections Open
View article: Subclinical mastitis in dairy cows in south-Asian countries: a review of risk factors and etiology to prioritize control measures
Subclinical mastitis in dairy cows in south-Asian countries: a review of risk factors and etiology to prioritize control measures Open
Mastitis is a major production disease, causing significant economic losses for dairy farmers in South-Asian countries, as well as other parts of the world. Udder health control programs (UHCP) have been established in developed countries …
View article: A stochastic modelling approach to determine the effect of diverse Staphylococcus aureus strains on the economic and epidemiological outcomes of mastitis intervention strategies in dairy cattle
A stochastic modelling approach to determine the effect of diverse Staphylococcus aureus strains on the economic and epidemiological outcomes of mastitis intervention strategies in dairy cattle Open
View article: Incidence, Etiology, and Risk Factors of Clinical Mastitis in Dairy Cows under Semi-Tropical Circumstances in Chattogram, Bangladesh
Incidence, Etiology, and Risk Factors of Clinical Mastitis in Dairy Cows under Semi-Tropical Circumstances in Chattogram, Bangladesh Open
Clinical mastitis (CM) is an important production disease in dairy cows, but much of the knowledge required to effectively control CM is lacking, specifically in low-income countries where most farms are small and have specific dairy manag…
View article: Regularly fluctuating somatic cell count pattern in dairy herds
Regularly fluctuating somatic cell count pattern in dairy herds Open
Online somatic cell count (SCC) measurement is widely used in dairy herds milked with automatic milking systems (AMS) and gives the opportunity to closely monitor individual cow udder health. Using automated SCC data, we observed cows disp…
View article: Transmission dynamics of Staphylococcus aureus and Streptococcus agalactiae in a Dutch dairy herd using an automatic milking system
Transmission dynamics of Staphylococcus aureus and Streptococcus agalactiae in a Dutch dairy herd using an automatic milking system Open
Staphylococcus aureus and Streptococcus agalactiae are important contagious mastitis pathogens and are considered to mainly transmit between cows through the milking machine. Controlling contagious mastitis on dairy farms requires a reduct…
View article: Dynamics of intramammary infections in suckler ewes during early lactation
Dynamics of intramammary infections in suckler ewes during early lactation Open
Mastitis is an important problem in meat-producing sheep, but few studies have investigated the transmission dynamics of mastitis pathogens in these animals. The objective of this study was to describe the pathogens causing intramammary in…
View article: Effects of a mastitis treatment strategy with or without on-farm testing
Effects of a mastitis treatment strategy with or without on-farm testing Open
The etiology of mastitis is crucial information to use antimicrobials prudently for control and treatment. This study aimed to evaluate the effects of mastitis diagnosis and treatment strategies with on-farm testing, on cure, new intramamm…
View article: Genomic analysis of European bovine Staphylococcus aureus from clinical versus subclinical mastitis
Genomic analysis of European bovine Staphylococcus aureus from clinical versus subclinical mastitis Open
View article: Antimicrobial use and farmers' attitude toward mastitis treatment on dairy farms with automatic or conventional milking systems
Antimicrobial use and farmers' attitude toward mastitis treatment on dairy farms with automatic or conventional milking systems Open
Mastitis is one of the major causes for antimicrobial use on dairy cattle farms. On farms with an automatic milking system (AMS), diagnostics differ from those with a conventional milking system (CMS), with potentially a different attitude…
View article: Performance of Online Somatic Cell Count Estimation in Automatic Milking Systems
Performance of Online Somatic Cell Count Estimation in Automatic Milking Systems Open
Somatic cell count (SCC) is one of the most important and widely used mastitis diagnostics. For detecting (sub)clinical mastitis, online SCC related measurements are more and more used in automatic milking systems (AMS). Sensors such as an…
View article: Urinary excretion of advanced glycation end products in dogs and cats
Urinary excretion of advanced glycation end products in dogs and cats Open
The present study was conducted with privately owned dogs and cats to investigate whether a relationship exists between the dietary AGEs and the urinary excretion of AGEs, as indication of possible effective absorption of those compounds i…
View article: Prevalence, aetiology and risk factors of subclinical mastitis in goats in Bangladesh
Prevalence, aetiology and risk factors of subclinical mastitis in goats in Bangladesh Open
View article: Activation of a Bovine Mammary Epithelial Cell Line by Ruminant-Associated Staphylococcus aureus is Lineage Dependent
Activation of a Bovine Mammary Epithelial Cell Line by Ruminant-Associated Staphylococcus aureus is Lineage Dependent Open
Bovine mastitis is a costly disease to the dairy industry and intramammary infections (IMI) with Staphylococcus aureus are a major cause of mastitis. Staphylococcus aureus strains responsible for mastitis in cattle predominantly belong to …
View article: Differences between Staphylococcus aureus lineages isolated from ovine and caprine mastitis but not between isolates from clinical or subclinical mastitis
Differences between Staphylococcus aureus lineages isolated from ovine and caprine mastitis but not between isolates from clinical or subclinical mastitis Open
Staphylococcus aureus is an important mastitis pathogen, causing both clinical mastitis (CM) and subclinical mastitis (SCM) in small ruminants. In general, CM has a low incidence in sheep and goats but can be very severe and costly. In con…
View article: Farm-level risk factors for bovine mastitis in Dutch automatic milking dairy herds
Farm-level risk factors for bovine mastitis in Dutch automatic milking dairy herds Open
Automatic milking systems (AMS) are installed on a growing number of dairy farms worldwide. Management to support good udder health might be different on farms with an AMS compared with farms milking with a conventional milking system, as …