Internal teat sealants alone or in combination with antibiotics at dry-off – the effect on udder health in dairy cows in five commercial herds

Clabby, C.; McParland, S.; Dillon, P.; Arkins, Seán; Flynn, Jim; Murphy, J.; Boloña, P. Silva

doi:10.1016/j.animal.2021.100449

Cited by 10 publications

(5 citation statements)

References 32 publications

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“…Consiste en el secado selectivo, donde las vacas con mayor número de células somáticas, las más susceptibles a mastitis y las de mayor producción se secan por medio de aplicación de antibiótico intramamario y sellado y las otras se secan sin antibiótico, empleando solamente el sellado. Este sistema ha mostrado eficacia en cuanto al control de la mastitis, pero estudios han mostrado que la resistencia de los microorganismos tomados del calostro y de la leche, presentan el mismo nivel de resistencia a los antibióticos, lo que demuestra que es un factor que ya tienen las bacterias siendo una facultad que ellas poseen y heredan (40)(41)(42). También se ha observado que las bacterias poseen diferentes cepas y estas son las que determinan la gravedad de la mastitis (43).…”

Section: Resultados Y Discusiónunclassified

An overview on mastitis-associated Escherichia coli: Pathogenicity, host immunity and the use of alternative therapies

Zaatout

2022

Microbiological Research

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Section: Resultados Y Discusiónunclassified

An overview on mastitis-associated Escherichia coli: Pathogenicity, host immunity and the use of alternative therapies

Zaatout

2022

Microbiological Research

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“…A study by Palma Molina et al [ 23 ] documented the prevalence of certain technologies but did not examine milk quality on farms. Other Irish studies document certain aspects of management practices and their relationship with BTSCC [ 24 , 35 , 36 ], but did not tie these together with parlour technologies. This study documented the farm and parlour management practices, parlour technologies, milking management practices, SCC control strategies and farmer demographics on a sample of commercial Irish dairy farms, thereby filling current gaps in the literature.…”

Section: Discussionmentioning

confidence: 99%

Survey of farm, parlour and milking management, parlour technologies, SCC control strategies and farmer demographics on Irish dairy farms

Uí Chearbhaill,

Boloña,

Ryan

et al. 2024

Ir Vet J

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Background This cross-sectional study describes a survey designed to fill knowledge gaps regarding farm management practices, parlour management practices and implemented technologies, milking management practices, somatic cell count (SCC) control strategies, farmer demographics and attitudes around SCC management on a sample of Irish dairy farms. Results We categorized 376 complete responses by herd size quartile and calving pattern. The average respondent herd was 131 cows with most (82.2%) operating a seasonal calving system. The median monthly bulk tank somatic cell count for seasonal calving systems was 137,000 cells/ml (range 20,000 – 1,269,000 cells/ml), 170,000 cells/ml for split-calving systems (range 46,000 – 644,000 cells/ml) and 186,000 cells/ml for ‘other’ herds (range 20,000 – 664,000 cells/ml). The most common parlour types were swing-over herringbones (59.1%) and herringbones with recording jars (22.2%). The average number of units across herringbone parlours was 15, 49 in rotary parlours and two boxes on automatic milking system (AMS) farms. The most common parlour technologies were in-parlour feeding systems (84.5%), automatic washers on the bulk tank (72.8%), automatic cluster removers (57.9%), and entrance or exit gates controlled from the parlour pit (52.2%). Veterinary professionals, farming colleagues and processor milk quality advisors were the most commonly utilised sources of advice for SCC management (by 76.9%, 50.0% and 39.2% of respondents respectively). Conclusions In this study, we successfully utilised a national survey to quantify farm management practices, parlour management practices and technology adoption levels, milking management practices, SCC control strategies and farmer demographics on 376 dairy farms in the Republic of Ireland. Rotary and AMS parlours had the most parlour technologies of any parlour type. Technology add-ons were generally less prevalent on farms with smaller herds. Despite finding areas for improvement with regard to frequency of liner changes, glove-wearing practices and engagement with bacteriology of milk samples, we also found evidence of high levels of documentation of mastitis treatments and high use of post-milking teat disinfection. We discovered that Irish dairy farmers are relatively content in their careers but face pressures regarding changes to the legislation around prudent antimicrobial use in their herds.

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“…In contrast, the use of injectable sealants had no effect on the frequency of streptococcal isolation. Clabby et al [ 41 ] carried out an experiment in which they dried one experimental group of cows with dystrophin sealants and an antibiotic and the other with the dystrophin sealant alone. The authors found that cows dried with the teat sealant alone had higher SCCs and were more likely to develop udder infections during the next lactation compared to cows dried with both the antibiotic and the sealant.…”

Section: Discussionmentioning

confidence: 99%

In Vitro Evaluation of the Antimicrobial Properties of Nanoparticles as New Agents Used in Teat Sealants for Mastitis Prevention in Dry Cows

Radzikowski,

Kalińska,

Kot

et al. 2023

Biomedicines

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Mastitis prevention and treatment in dry cows are complex issues with limited solutions. The most common is intramammary antibiotic treatment. However, the effectiveness of this treatment varies among countries and even within herds in the same region. Therefore, it is necessary to develop new strategies for dry cow therapy. Metal nanoparticles (NPs), which have strong biocidal properties for treating diseases caused by bacteria, fungi, and algae, are increasingly used to reduce antibiotic use. In this study, AuNPs, CuNPs, AgNPs, PtNPs, NP-FeCs, and their triple complexes were used at different concentrations to evaluate their practical use in treating cows during their dry period. The nanoparticles were in hydrocolloid form and were added separately to form a mixture with beeswax, a mixture with oil, or a mixture based on vegetable glycerin and propylene glycol. The NPs’ concentrations were 0.5, 1, 2, and 5 ppm. Gram-positive and Gram-negative bacteria, and fungi isolated from cows diagnosed with mastitis were used to determine pathogen viability. The results indicated that AuNPs, CuNPs, AgNPs, and their complexes show biocidal properties against mastitis pathogens. AgNPs at 5 ppm had the strongest biocidal properties and reduced Streptococcus agalactiae’s survival rate by 50%; however, the nanoparticle complexes showed poor synergism. The strongest biocidal properties of NPs in wax and in glycerin mixed with glycol were shown against Escherichia coli. Additionally, low nanoparticle concentrations showed no cytotoxicity for BME-UV1 bovine cells, suggesting that these mixtures might be used for further in vivo testing.

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Internal teat sealants alone or in combination with antibiotics at dry-off – the effect on udder health in dairy cows in five commercial herds

Cited by 10 publications

References 32 publications

An overview on mastitis-associated Escherichia coli: Pathogenicity, host immunity and the use of alternative therapies

An overview on mastitis-associated Escherichia coli: Pathogenicity, host immunity and the use of alternative therapies

Survey of farm, parlour and milking management, parlour technologies, SCC control strategies and farmer demographics on Irish dairy farms

In Vitro Evaluation of the Antimicrobial Properties of Nanoparticles as New Agents Used in Teat Sealants for Mastitis Prevention in Dry Cows

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