Economic impact of subclinical mastitis in Bangladeshi crossbred dairy cattle

Economic impact of subclinical mastitis in Bangladeshi crossbred dairy cattle | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Economic impact of subclinical mastitis in Bangladeshi crossbred dairy cattle Muhammad Aktaruzzaman, M. Ariful Islam, Solama Akter Shanta, Mst. Tahomina Akter, and 4 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7932703/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract This study quantified the economic losses associated with subclinical mastitis in crossbred dairy cattle in Sirajganj, Bangladesh. Between January 2023 and December 2024, a total of 3,174 lactating cows from 76 herds were sampled. Composite milk samples (40 mL) were aseptically collected, transported to the laboratory within one hour, and analyzed for SCC using the EKOMILK SCAN® analyzer. Cow-level data—including age, breed, parity, lactation stage, pregnancy status, milk yield, and history of clinical mastitis—were obtained through a pre-tested questionnaire. Milk yield loss associated with elevated SCC was estimated using multivariable mixed-effects linear regression, accounting for herd-level clustering. SCC values were centered at 200,000 cells/mL, and coefficients were rescaled to reflect yield loss per 100,000-cell/mL increase above this threshold. Estimated losses were calculated with 95% confidence intervals, aggregated to herd-level, and standardized to a 1,000-cow basis. Economic impacts were derived by multiplying milk losses by the prevailing milk price (BDT 60/L) and expressed in Bangladeshi Taka (BDT) and U.S. dollars (USD 1 = BDT 122). During the ‘bathan’ period, average loss was 0.10 L/cow/day (BDT 6.03), equivalent to 100.5 L/day for 1,000 cows (BDT 6,028.90; USD 49.42). In the ‘non-bathan’ period, losses doubled to 0.20 L/cow/day (BDT 11.98), or 200 L/day per 1,000 cows (BDT 11,976.2; USD 98.17). SCC showed a consistent negative association with yield, with higher losses observed during confinement. Herd-level variation suggested strong management influences. Improving cow comfort and ensuring access to green grass or silage throughout the year can decrease SCC-related losses and increase farm profitability. bathan Jumbo grass black gram animal welfare cow comfort milk yield Full Text Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7932703","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":562383345,"identity":"2987c2bd-81bc-40d1-85e6-b8d961a4faa8","order_by":0,"name":"Muhammad Aktaruzzaman","email":"","orcid":"","institution":"Bangladesh Agricultural University","correspondingAuthor":false,"prefix":"","firstName":"Muhammad","middleName":"","lastName":"Aktaruzzaman","suffix":""},{"id":562383346,"identity":"c770a6a9-7a1f-460d-ac00-14948f9ae586","order_by":1,"name":"M. 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Between January 2023 and December 2024, a total of 3,174 lactating cows from 76 herds were sampled. Composite milk samples (40 mL) were aseptically collected, transported to the laboratory within one hour, and analyzed for SCC using the EKOMILK SCAN® analyzer. Cow-level data—including age, breed, parity, lactation stage, pregnancy status, milk yield, and history of clinical mastitis—were obtained through a pre-tested questionnaire. Milk yield loss associated with elevated SCC was estimated using multivariable mixed-effects linear regression, accounting for herd-level clustering. SCC values were centered at 200,000 cells/mL, and coefficients were rescaled to reflect yield loss per 100,000-cell/mL increase above this threshold. Estimated losses were calculated with 95% confidence intervals, aggregated to herd-level, and standardized to a 1,000-cow basis. Economic impacts were derived by multiplying milk losses by the prevailing milk price (BDT 60/L) and expressed in Bangladeshi Taka (BDT) and U.S. dollars (USD 1 = BDT 122). During the ‘bathan’ period, average loss was 0.10 L/cow/day (BDT 6.03), equivalent to 100.5 L/day for 1,000 cows (BDT 6,028.90; USD 49.42). In the ‘non-bathan’ period, losses doubled to 0.20 L/cow/day (BDT 11.98), or 200 L/day per 1,000 cows (BDT 11,976.2; USD 98.17). SCC showed a consistent negative association with yield, with higher losses observed during confinement. Herd-level variation suggested strong management influences. 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