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Sun X, Zhao R, Wang X, Wu Y, Yang D, Wang J, Wu Z, Wang N, Zhang J, Xiao B, Chen J, Huang F, Chen A. A smartphone-based diagnostic analyzer for point-of-care milk somatic cell counting. Anal Chim Acta 2024; 1304:342540. [PMID: 38637050 DOI: 10.1016/j.aca.2024.342540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 03/19/2024] [Accepted: 03/25/2024] [Indexed: 04/20/2024]
Abstract
BACKGROUND Mastitis, a pervasive and detrimental disease in dairy farming, poses a significant challenge to the global dairy industry. Monitoring the milk somatic cell count (SCC) is vital for assessing the incidence of mastitis and the quality of raw cow's milk. However, existing SCC detection methods typically require large-scale instruments and specialized operators, limiting their application in resource-constrained settings such as dairy farms and small-scale labs. To address these limitations, this study introduces a novel, smartphone-based, on-site SCC testing method that leverages smartphone capabilities for milk somatic cell identification and enumeration, offering a portable and user-friendly testing platform. RESULTS The central findings of our study demonstrate the effectiveness of the proposed method for counting milk somatic cells. Its on-site applicability, facilitated by the microfluidic chip, optical system, and smartphone integration, heralds a paradigm shift in point-of-care testing (POCT) for dairy farms and smaller laboratories. This approach bypasses complex processing and presents a user-friendly solution for real-time SCC monitoring in resource-limited settings. This device boasts several unique features: small size, low cost (<$1,000 total manufacturing cost and <$1 per test), and high accuracy. Remarkably, it delivers test results within just 2 min. Actual-sample testing confirmed its consistency with results from the commercial Bentley FTS/FCM cytometer, affirming the reliability of the proposed method. Overall, these results underscore the potential for transformative change in dairy farm management and laboratory testing practices. SIGNIFICANCE In summary, this study concludes that the proposed smartphone-based method significantly contributes to the accessibility and ease of SCC testing in resource-limited environments. By fostering the use of POCT technology in food safety control, particularly in the dairy industry, this innovative approach has the potential to revolutionize the monitoring and management of mastitis, ultimately benefiting the global dairy sector.
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Affiliation(s)
- Xiaoyun Sun
- Institute of Quality Standard & Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Ruiming Zhao
- Institute of Quality Standard & Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Xianhua Wang
- Beijing BETA Technology Co., Ltd, Beijing, 101300, China.
| | - Yunlong Wu
- Beijing BETA Technology Co., Ltd, Beijing, 101300, China.
| | - Degang Yang
- Beijing BETA Technology Co., Ltd, Beijing, 101300, China.
| | - Jianhui Wang
- Beijing BETA Technology Co., Ltd, Beijing, 101300, China.
| | - Zhihong Wu
- Beijing BETA Technology Co., Ltd, Beijing, 101300, China.
| | - Nan Wang
- Institute of Quality Standard & Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Juan Zhang
- Institute of Quality Standard & Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Bin Xiao
- Institute of Quality Standard & Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Jiaci Chen
- Institute of Quality Standard & Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Fengchun Huang
- Institute of Quality Standard & Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Ailiang Chen
- Institute of Quality Standard & Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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More SJ, Madden JM, McAloon CI. Prescribing and sales of intramammary antimicrobials in Ireland in 2019 and 2020: the role of milk purchasers. Ir Vet J 2022; 75:20. [PMCID: PMC9675076 DOI: 10.1186/s13620-022-00227-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 10/23/2022] [Indexed: 11/21/2022] Open
Abstract
Background In Ireland between 2008 and 2022, intramammary antimicrobial (AM) products could be prescribed by a veterinary practitioner under what was known as Schedule 8 (or remote) prescribing. Under this prescribing route, an annual herd visit was not required when criteria were met as outlined in Animal Remedies Regulation 2007 to 2017 (statutory instruments No. 786/2007 and 558/2017). Under this prescribing route, the responsibilities of the milk purchaser, the farmer and the veterinary practitioner were each outlined, and a written mastitis control programme (MCP) was required. Milk purchasers implemented MCPs on participating farms (so-called MCP herds) with support from veterinary practitioner(s) who undertook Schedule 8 prescribing of intramammary AM tubes. This study seeks a clearer understanding of the role of milk purchasers in the prescribing and sale of intramammary AM products in Ireland during 2019 and 2020, whilst this Regulation was in force. Specifically, the study sought insights into the role of milk purchasers in the prescribing and sale of intramammary AM products in the Irish dairy industry during 2019 and 2020, using anonymised and highly aggregated milk purchaser data. The study also provided insights into milk quality among supplying herds during this period. Methods For this study, we had access to anonymised, highly aggregated data from all milk purchasers that operated a MCP on at least some of their supplying herds during 2019 or 2020. Data collection was undertaken by the Department of Agriculture, Food and Marine. Data analysis was primarily descriptive. Results Data were available on 11 milk purchasers (64.7% of all) and 13,251 supplying herds. Of these, 52% were MCP herds. The quality of milk from supplying herds varied significantly by month, year and milk purchaser. During 2019 and 2020, there was a single Schedule 8 prescriber (a private veterinary practitioner prescribing intramammary AMs as part of a MCP), on average, for 549.3 herds. The sale of intramammary AM products through milk purchasers represented 15.2% and 26.9% of national sales in in-lactation and dry cow tubes, respectively. There was an overall 2% increase in sales through milk purchasers between 2019 and 2020. Few European Medicines Agency (EMA) category B (‘Restrict’) intramammary AM products were sold by milk purchasers. For both in-lactation and dry cow tubes, there was a statistically significant association between EMA classification and route of sale (through milk purchasers or otherwise). Conclusions The study findings provide important insights into mastitis control and intramammary AM stewardship in the Irish dairy industry. Significant differences between milk purchasers were observed in the quality of milk, as measured through somatic cell count (SCC) values, from supplying herds. This warrants further research. In the context of intramammary AM prescribing, veterinary oversight under the Animal Remedies Regulation 2007 to 2017 was very limited during 2019 and 2020. There were also significant associations between EMA classification and route of sale during 2019 and 2020, reinforcing the need for Irish veterinary practitioners to move away from EMA category B intramammary AMs. Higher quality data are needed to address important industry questions. Specifically it is recommended that national bulk tank SCC data are made available for public good research. Past experiences with Schedule 8 prescribing (no longer permitted from 28 January 2022) may influence current efforts towards improved intramammary AM stewardship. Supplementary Information The online version contains supplementary material available at 10.1186/s13620-022-00227-4.
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Affiliation(s)
- Simon J. More
- grid.7886.10000 0001 0768 2743UCD Centre for Veterinary Epidemiology and Risk Analysis, University College Dublin, Belfield, Dublin, D04 W6F6 Ireland ,grid.7886.10000 0001 0768 2743UCD School of Veterinary Medicine, University College Dublin, Dublin, Belfield D04 W6F6 Ireland
| | - Jamie M. Madden
- grid.7886.10000 0001 0768 2743UCD Centre for Veterinary Epidemiology and Risk Analysis, University College Dublin, Belfield, Dublin, D04 W6F6 Ireland
| | - Catherine I. McAloon
- grid.7886.10000 0001 0768 2743UCD School of Veterinary Medicine, University College Dublin, Dublin, Belfield D04 W6F6 Ireland
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More SJ, McAloon C, Silva Boloña P, O'Grady L, O'Sullivan F, McGrath M, Buckley W, Downing K, Kelly P, Ryan EG, McCoy F. Mastitis Control and Intramammary Antimicrobial Stewardship in Ireland: Challenges and Opportunities. Front Vet Sci 2022; 9:748353. [PMID: 35498730 PMCID: PMC9040554 DOI: 10.3389/fvets.2022.748353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 02/25/2022] [Indexed: 12/04/2022] Open
Abstract
The Veterinary Medicines Regulation (EU 2019/6) came into force in all EU member states on 28 January 2022. This regulation places particular emphasis on prudent and responsible antimicrobial use in food animal production. Key changes include restrictions on the prophylactic use of antimicrobials in animals, and the possibility to reserve certain antimicrobials for humans only. The Regulation presents challenges to the Irish dairy industry, particularly with respect to current approaches to dry cow therapy. In response, the CellCheck technical working group (TWG, a technical group working in support of CellCheck, the national mastitis control programme) have developed pragmatic national and farm-level recommendations in support of improved mastitis control and intramammary antimicrobial stewardship in the Irish dairy industry. This paper outlines these recommendations, and provides an overview of the evidence considered to inform the TWG during its work (including the Regulation, policy perspectives, international best-practice, international scientific reviews and specific Irish challenges). In many key areas of concern, the TWG recognises the challenges in seeking to shape recommendations in the absence of robust and practical scientific evidence. For this reason, some of the recommended actions are pragmatic in nature, informed by national and international experiences. Periodic programme review will be needed, informed by ongoing monitoring of key performance indicators, to identify those actions that are most effective in an Irish context.
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Affiliation(s)
- Simon J. More
- Centre for Veterinary Epidemiology and Risk Analysis, UCD School of Veterinary Medicine, University College Dublin, Belfield, Ireland
- Herd Health and Animal Husbandry, UCD School of Veterinary Medicine, University College Dublin, Belfield, Ireland
| | - Catherine McAloon
- Herd Health and Animal Husbandry, UCD School of Veterinary Medicine, University College Dublin, Belfield, Ireland
| | - Pablo Silva Boloña
- Teagasc, Animal and Grassland Research and Innovation Centre, Fermoy, Ireland
| | - Luke O'Grady
- Herd Health and Animal Husbandry, UCD School of Veterinary Medicine, University College Dublin, Belfield, Ireland
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Leicestershire, United Kingdom
| | | | | | | | - Kevin Downing
- Irish Cattle Breeding Federation, Ballincollig, Ireland
| | | | - Eoin G. Ryan
- Herd Health and Animal Husbandry, UCD School of Veterinary Medicine, University College Dublin, Belfield, Ireland
| | - Finola McCoy
- Animal Health Ireland, Carrick on Shannon, Ireland
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