Associations between on-farm factors and bulk tank SCC on Irish dairy farms

Abstract Background This study describes associations between bulk tank somatic cell count (BTSCC) and farm management practices, parlour management practices and implemented technologies, milking management practices, somatic cell count (SCC) control strategies, and farmer demographics and attitude...

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Main Authors: Alice Uí Chearbhaill, Pablo Silva Boloña, Eoin G. Ryan, Catherine I. McAloon, Conor G. McAloon, John Upton
Format: Article
Language:English
Published: BMC 2025-07-01
Series:Irish Veterinary Journal
Subjects:
Online Access:https://doi.org/10.1186/s13620-025-00300-8
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author Alice Uí Chearbhaill
Pablo Silva Boloña
Eoin G. Ryan
Catherine I. McAloon
Conor G. McAloon
John Upton
author_facet Alice Uí Chearbhaill
Pablo Silva Boloña
Eoin G. Ryan
Catherine I. McAloon
Conor G. McAloon
John Upton
author_sort Alice Uí Chearbhaill
collection DOAJ
description Abstract Background This study describes associations between bulk tank somatic cell count (BTSCC) and farm management practices, parlour management practices and implemented technologies, milking management practices, somatic cell count (SCC) control strategies, and farmer demographics and attitudes around SCC management using a sample of Irish dairy farms. Results This paper utilised a pre-existing dataset from a farm management and technology survey of 376 commercial Irish dairy farms conducted in 2022. Five mixed models were used to examine associations between variables in each of the five survey sections and log-10 transformed BTSCC (log10BTSCC). Seasonal calving patterns, family members milking alongside survey respondents, and keeping of mastitis treatment records were associated with lower log10BTSCC. Parlour technologies such as automatic cluster removers and automatic washers on the milking machine were associated with significantly reduced log10BTSCC, whereas the presence of backing gates and straight breast rails were associated with increased log10BTSCC. Fore-milking, pre-milking udder preparation and post-milking teat disinfection contributed to lower log10BTSCC. Advice sought from veterinary professionals regarding SCC, multi-faceted approaches to selective dry cow therapy decisions, and utilisation of results from multiple milk recordings were also associated with significantly decreased log10BTSCC. Conclusions In this study, we successfully established associations between log10BTSCC and farm management practices, parlour management practices and implemented technologies, milking management practices, SCC control strategies, and farmer demographics and attitudes around SCC management. We identified scope for further research on many of the aspects found to be associated with log10BTSCC in this study, particularly in the areas of cow positioning within parlours, fore-milking practices, milk recording, and means of disseminating SCC advice to farmers, particularly around the topics of parlour hygiene and selective dry cow therapy.
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spelling doaj-art-b305b2a79ac04f09b4a4cd3a2ff1be942025-08-20T03:05:24ZengBMCIrish Veterinary Journal2046-04812025-07-0178113010.1186/s13620-025-00300-8Associations between on-farm factors and bulk tank SCC on Irish dairy farmsAlice Uí Chearbhaill0Pablo Silva Boloña1Eoin G. Ryan2Catherine I. McAloon3Conor G. McAloon4John Upton5Teagasc, Animal & Grassland Research and Innovation CentreTeagasc, Animal & Grassland Research and Innovation CentreSchool of Veterinary Medicine, University College DublinSchool of Veterinary Medicine, University College DublinSchool of Veterinary Medicine, University College DublinTeagasc, Animal & Grassland Research and Innovation CentreAbstract Background This study describes associations between bulk tank somatic cell count (BTSCC) and farm management practices, parlour management practices and implemented technologies, milking management practices, somatic cell count (SCC) control strategies, and farmer demographics and attitudes around SCC management using a sample of Irish dairy farms. Results This paper utilised a pre-existing dataset from a farm management and technology survey of 376 commercial Irish dairy farms conducted in 2022. Five mixed models were used to examine associations between variables in each of the five survey sections and log-10 transformed BTSCC (log10BTSCC). Seasonal calving patterns, family members milking alongside survey respondents, and keeping of mastitis treatment records were associated with lower log10BTSCC. Parlour technologies such as automatic cluster removers and automatic washers on the milking machine were associated with significantly reduced log10BTSCC, whereas the presence of backing gates and straight breast rails were associated with increased log10BTSCC. Fore-milking, pre-milking udder preparation and post-milking teat disinfection contributed to lower log10BTSCC. Advice sought from veterinary professionals regarding SCC, multi-faceted approaches to selective dry cow therapy decisions, and utilisation of results from multiple milk recordings were also associated with significantly decreased log10BTSCC. Conclusions In this study, we successfully established associations between log10BTSCC and farm management practices, parlour management practices and implemented technologies, milking management practices, SCC control strategies, and farmer demographics and attitudes around SCC management. We identified scope for further research on many of the aspects found to be associated with log10BTSCC in this study, particularly in the areas of cow positioning within parlours, fore-milking practices, milk recording, and means of disseminating SCC advice to farmers, particularly around the topics of parlour hygiene and selective dry cow therapy.https://doi.org/10.1186/s13620-025-00300-8Parlour technologiesMilking managementFarm managementSCC control
spellingShingle Alice Uí Chearbhaill
Pablo Silva Boloña
Eoin G. Ryan
Catherine I. McAloon
Conor G. McAloon
John Upton
Associations between on-farm factors and bulk tank SCC on Irish dairy farms
Irish Veterinary Journal
Parlour technologies
Milking management
Farm management
SCC control
title Associations between on-farm factors and bulk tank SCC on Irish dairy farms
title_full Associations between on-farm factors and bulk tank SCC on Irish dairy farms
title_fullStr Associations between on-farm factors and bulk tank SCC on Irish dairy farms
title_full_unstemmed Associations between on-farm factors and bulk tank SCC on Irish dairy farms
title_short Associations between on-farm factors and bulk tank SCC on Irish dairy farms
title_sort associations between on farm factors and bulk tank scc on irish dairy farms
topic Parlour technologies
Milking management
Farm management
SCC control
url https://doi.org/10.1186/s13620-025-00300-8
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