On most dairy farms teat dips are applied to the teats of cows either before or after milking in order to prevent pathogens from gaining access to the mammary gland via the teat canal. In the present experiments, a natural teat dip was developed using a fermentate containing the live bacterium Lactococcus lactis DPC 3251. This bacterium produces lacticin 3147, a two-component lantibiotic which ...

The objectives of this study were to estimate the herd prevalence of major mastitis pathogens in bulk tank milk (BTM) in China dairy herds, to determine the relationship between the presence of mastitis pathogens and bulk tank milk somatic cell counts (BTSCC), and to investigate the impact of different dairy cattle farming modes and region on bacterial species. BTM samples collected from 894 da...

Introduction: Extended therapy applied to mastitis treatment consists in treating cows for a longer period than labeled. The typical treatment of 1 to 3 days depending on the product is extended up to 8 consecutive days. Those treatments are mainly used to treat chronic subclinical mastitis caused by Staphylococcus aureus (S. aureus) or Streptococcus uberis (Str. uberis) but they can also be us...

Over the past few years, the syndrome of streptococcosis has been associated with outbreaks in rainbow trout (Oncorhynchus mykiss, Walbaum) and caused significant economic losses in the aquaculture industry in Iran. The main purpose of this work was molecular identification of some causative agents of streptococcosis in rainbow trout. A total of 520 samples were collected from the head kidney o...

This journal is©The Royal Society of Chemistry 2016 Cite this:Mol. BioSyst., 2016, 12, 2748 Mastitomics, the integrated omics of bovine milk in an experimental model of Streptococcus uberis mastitis: 2. Label-free relative quantitative proteomics† Manikhandan Mudaliar, Riccardo Tassi, Funmilola C. Thomas, Tom N. McNeilly, Stefan K. Weidt, Mark McLaughlin, David Wilson, Richard Burchmore, Pawel ...

İneklerde reprodüktif bozukluklar, üreme verimliliğinin azalmasının ana belirleyici faktörüdür. Dünyada olduğu gibi ülkemizde de süt üretimindeki ekonomik kayıpların en önemli nedeni sistemi enfeksiyonlarıdır. Enfeksiyon kaynaklı infertilitenin büyük bir bölümüne bakteriyel etkenler neden olur. Bu çalışma, 56 adet Holstein ırkı düvede 3 grup halinde yürütülmüştür. Grup I; bulanık ve irinli çara...

Streptococcus uberis is commonly found in the environment and in association with various bovine body sites and is a major cause of bovine mastitis. Moreover, S. uberis is known to produce a variety of bacteriocin-like inhibitory substances, antimicrobial agents that generally inhibit closely related bacterial species. In this respect, S. uberis strain 42 has previously been shown to produce a ...

This study was designed to identify risk factors for intramammary infections with Streptococcus uberis and Staphylococcus aureus under field conditions. An 18-mo survey with sampling of all quarters of all lactating cows at 3-wk intervals was carried out in three Dutch dairy herds with medium bulk milk somatic cell count (200,000 to 300,000 cells/ml). Quarter milk samples were used for bacterio...

MicroRNAs (miRNAs) are short, non-coding RNAs, which post-transcriptionally regulate gene expression and are proposed to play a key role in the regulation of innate and adaptive immunity. Here, we report a next generation sequencing (NGS) approach profiling the expression of miRNAs in primary bovine mammary epithelial cells (BMEs) at 1, 2, 4 and 6 hours post-infection with Streptococcus uberis,...