2018 Survey of antimicrobial drug use and stewardship practices in adult cows on California dairies: post-Senate Bill 27
Background A survey of California (CA) dairies was performed in spring 2018 to characterize antimicrobial stewardship practices, antimicrobial drug (AMD) use, and health management of adult cows on CA dairies since the implementation of the Veterinary Feed Directive (VFD) and the CA Senate Bill 27 (...
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PeerJ Inc.
2021-07-01
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| Online Access: | https://peerj.com/articles/11515.pdf |
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| author | Pius S. Ekong Essam M. Abdelfattah Emmanuel Okello Deniece R. Williams Terry W. Lehenbauer Betsy M. Karle Joan D. Rowe Edith S. Marshall Sharif S. Aly |
| author_facet | Pius S. Ekong Essam M. Abdelfattah Emmanuel Okello Deniece R. Williams Terry W. Lehenbauer Betsy M. Karle Joan D. Rowe Edith S. Marshall Sharif S. Aly |
| author_sort | Pius S. Ekong |
| collection | DOAJ |
| description | Background A survey of California (CA) dairies was performed in spring 2018 to characterize antimicrobial stewardship practices, antimicrobial drug (AMD) use, and health management of adult cows on CA dairies since the implementation of the Veterinary Feed Directive (VFD) and the CA Senate Bill 27 (SB 27). Effective January 1, 2017, the U.S. Food and Drug Administration (FDA) implemented regulatory changes requiring veterinary oversight for therapeutic uses of medically-important antimicrobial drugs (MIADs) administered in feed (VFD) and water (veterinary prescription). Similarly, effective January 1, 2018, the CA legislature enacted California Food and Agricultural Code (FAC) 14400–14408, formerly known as Senate Bill 27 (SB 27) requiring veterinary prescriptions for all other dosage forms of MIADs. Methods The questionnaire consisted of 43 questions partitioned into three sections to assess herd information, management practices, and AMD use and perspectives. The questionnaire was mailed to 1,282 grade A licensed dairies in CA and 149 responses (11.6%) were collected from 19 counties across the three defined regions of CA: Northern CA (NCA), Northern San Joaquin Valley (NSJV), and Greater Southern CA (GSCA). Results Most dairies reported treating all dry cows with intramammary AMD and/or teat sealant at the end of a lactation (87.2%). In 92.3% of dairies, producers relied on the veterinarian for information about AMD used to treat cows. Treatment duration for cows treated with AMD was based on the drug manufacturer’s label and veterinarian’s instructions in most dairies (98.6%). Most respondents to the survey confirmed having a valid veterinarian-client-patient-relationship (VCPR) for their dairies (91.7%), participated in animal welfare audit programs (81.8%) and dairy quality assurance programs (52.9%). Approximately 98.6% respondents were aware that all uses of MIADs in livestock required a veterinary feed directive (VFD) or prescription and are no longer sold over-the-counter (OTC) in CA since January 1, 2018. Multiple factor analysis (MFA) was performed and identified seven components composed of 21 variables (questions) that explained 99.7% of the total variance in the data. Hierarchical cluster analysis on the principal coordinates of the MFA based on conventional dairy survey responses identified two clusters characterized as large conventional dairies (median herd size: 1,265 cows) and mid-sized conventional dairies (median herd size: 715 cows) mostly in GSCA and NSJV. The organic dairies grouped into a single cluster of median herd size of 325 cows mostly in NCA. Conclusions The survey results contribute to the knowledge of AMD use and antimicrobial stewardship practices on CA dairies since the implementation of the SB 27 and VFD laws and provide useful information for future evaluation of resistance-related risk in adult cows. |
| first_indexed | 2024-03-09T06:22:02Z |
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| language | English |
| last_indexed | 2024-03-09T06:22:02Z |
| publishDate | 2021-07-01 |
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| spelling | doaj.art-971ad4b52c424542a7458cfcbab9beb52023-12-03T11:36:12ZengPeerJ Inc.PeerJ2167-83592021-07-019e1151510.7717/peerj.115152018 Survey of antimicrobial drug use and stewardship practices in adult cows on California dairies: post-Senate Bill 27Pius S. Ekong0Essam M. Abdelfattah1Emmanuel Okello2Deniece R. Williams3Terry W. Lehenbauer4Betsy M. Karle5Joan D. Rowe6Edith S. Marshall7Sharif S. Aly8Veterinary Medicine Teaching and Research Center, School of Veterinary Medicine, University of California, Davis, Tulare, CA, United StatesVeterinary Medicine Teaching and Research Center, School of Veterinary Medicine, University of California, Davis, Tulare, CA, United StatesVeterinary Medicine Teaching and Research Center, School of Veterinary Medicine, University of California, Davis, Tulare, CA, United StatesVeterinary Medicine Teaching and Research Center, School of Veterinary Medicine, University of California, Davis, Tulare, CA, United StatesVeterinary Medicine Teaching and Research Center, School of Veterinary Medicine, University of California, Davis, Tulare, CA, United StatesCooperative Extension, Division of Agriculture and Natural Resources, University of California, Orland, CA, United StatesSchool of Veterinary Medicine, Department of Population Health and Reproduction, University of California, Davis, Davis, CA, United StatesAntimicrobial Use and Stewardship, Animal Health and Food Safety Services Division, California Department of Food and Agriculture, Sacramento, CA, United StatesVeterinary Medicine Teaching and Research Center, School of Veterinary Medicine, University of California, Davis, Tulare, CA, United StatesBackground A survey of California (CA) dairies was performed in spring 2018 to characterize antimicrobial stewardship practices, antimicrobial drug (AMD) use, and health management of adult cows on CA dairies since the implementation of the Veterinary Feed Directive (VFD) and the CA Senate Bill 27 (SB 27). Effective January 1, 2017, the U.S. Food and Drug Administration (FDA) implemented regulatory changes requiring veterinary oversight for therapeutic uses of medically-important antimicrobial drugs (MIADs) administered in feed (VFD) and water (veterinary prescription). Similarly, effective January 1, 2018, the CA legislature enacted California Food and Agricultural Code (FAC) 14400–14408, formerly known as Senate Bill 27 (SB 27) requiring veterinary prescriptions for all other dosage forms of MIADs. Methods The questionnaire consisted of 43 questions partitioned into three sections to assess herd information, management practices, and AMD use and perspectives. The questionnaire was mailed to 1,282 grade A licensed dairies in CA and 149 responses (11.6%) were collected from 19 counties across the three defined regions of CA: Northern CA (NCA), Northern San Joaquin Valley (NSJV), and Greater Southern CA (GSCA). Results Most dairies reported treating all dry cows with intramammary AMD and/or teat sealant at the end of a lactation (87.2%). In 92.3% of dairies, producers relied on the veterinarian for information about AMD used to treat cows. Treatment duration for cows treated with AMD was based on the drug manufacturer’s label and veterinarian’s instructions in most dairies (98.6%). Most respondents to the survey confirmed having a valid veterinarian-client-patient-relationship (VCPR) for their dairies (91.7%), participated in animal welfare audit programs (81.8%) and dairy quality assurance programs (52.9%). Approximately 98.6% respondents were aware that all uses of MIADs in livestock required a veterinary feed directive (VFD) or prescription and are no longer sold over-the-counter (OTC) in CA since January 1, 2018. Multiple factor analysis (MFA) was performed and identified seven components composed of 21 variables (questions) that explained 99.7% of the total variance in the data. Hierarchical cluster analysis on the principal coordinates of the MFA based on conventional dairy survey responses identified two clusters characterized as large conventional dairies (median herd size: 1,265 cows) and mid-sized conventional dairies (median herd size: 715 cows) mostly in GSCA and NSJV. The organic dairies grouped into a single cluster of median herd size of 325 cows mostly in NCA. Conclusions The survey results contribute to the knowledge of AMD use and antimicrobial stewardship practices on CA dairies since the implementation of the SB 27 and VFD laws and provide useful information for future evaluation of resistance-related risk in adult cows.https://peerj.com/articles/11515.pdfCalifornia dairy industry surveyAntimicrobial resistanceAntimicrobial stewardshipAntimicrobial drugs (AMD)Judicious use of AMD |
| spellingShingle | Pius S. Ekong Essam M. Abdelfattah Emmanuel Okello Deniece R. Williams Terry W. Lehenbauer Betsy M. Karle Joan D. Rowe Edith S. Marshall Sharif S. Aly 2018 Survey of antimicrobial drug use and stewardship practices in adult cows on California dairies: post-Senate Bill 27 PeerJ California dairy industry survey Antimicrobial resistance Antimicrobial stewardship Antimicrobial drugs (AMD) Judicious use of AMD |
| title | 2018 Survey of antimicrobial drug use and stewardship practices in adult cows on California dairies: post-Senate Bill 27 |
| title_full | 2018 Survey of antimicrobial drug use and stewardship practices in adult cows on California dairies: post-Senate Bill 27 |
| title_fullStr | 2018 Survey of antimicrobial drug use and stewardship practices in adult cows on California dairies: post-Senate Bill 27 |
| title_full_unstemmed | 2018 Survey of antimicrobial drug use and stewardship practices in adult cows on California dairies: post-Senate Bill 27 |
| title_short | 2018 Survey of antimicrobial drug use and stewardship practices in adult cows on California dairies: post-Senate Bill 27 |
| title_sort | 2018 survey of antimicrobial drug use and stewardship practices in adult cows on california dairies post senate bill 27 |
| topic | California dairy industry survey Antimicrobial resistance Antimicrobial stewardship Antimicrobial drugs (AMD) Judicious use of AMD |
| url | https://peerj.com/articles/11515.pdf |
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