Richard Van Vleck Pereira

Title(s)Associate Professor, School of Veterinary Medicine
SchoolSchool of Veterinary Medicine
Address3005 VM3B
CA 95616
ORCID ORCID Icon0000-0003-2028-8761 Additional info
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    1. Salmonella enterica Serovar Dublin from Cattle in California from 1993 to 2019: Characterization and Analysis of Antimicrobial Resistance Diversity. Antibiotics (Basel). 2023 Dec 25; 13(1). Pereira RV, Fritz HM, Toohey-Kurth K, Clothier KA. PMID: 38247581; PMCID: PMC10812445.
      View in: PubMed   Mentions:
    2. Unveiling the microbiome during post-partum uterine infection: a deep shotgun sequencing approach to characterize the dairy cow uterine microbiome. Anim Microbiome. 2023 Nov 20; 5(1):59. Basbas C, Garzon A, Schlesener C, van Heule M, Profeta R, Weimer BC, Silva-Del-Rio N, Byrne BA, Karle B, Aly SS, Lima FS, Pereira RV. PMID: 37986012; PMCID: PMC10662892.
      View in: PubMed   Mentions:
    3. Changes in Uterine Metabolome Associated with Metritis Development and Cure in Lactating Holstein Cows. Metabolites. 2023 Nov 16; 13(11). de Oliveira EB, Monteiro HF, Pereira JMV, Williams DR, Pereira RV, Silva Del Rio N, Menta PR, Machado VS, Lima FS. PMID: 37999252; PMCID: PMC10672899.
      View in: PubMed   Mentions:
    4. Agreement among deep nasopharyngeal sampling culture results for 3 different swab types in preweaning dairy calves. JDS Commun. 2024 Jan; 5(1):57-60. Hoyos-Jaramillo A, Garzon A, Fritz HM, Byrne BA, Miramontes CC, Lehenbauer TW, Aly S, Pereira RV. PMID: 38223385; PMCID: PMC10785258.
      View in: PubMed   Mentions:
    5. Antimicrobial resistance of Escherichia coli from dairy farms participating in an antimicrobial stewardship educational program for farm employees. J Dairy Sci. 2024 Mar; 107(3):1645-1655. Garzon A, Portillo R, Habing G, Silva-Del-Rio N, Karle BM, Pereira RV. PMID: 37806634.
      View in: PubMed   Mentions:    Fields:    Translation:HumansAnimalsCells
    6. Antimicrobial stewardship on the dairy: Evaluating an on-farm framework for training farmworkers. J Dairy Sci. 2023 Jun; 106(6):4171-4183. Garzon A, Portillo R, Habing G, Silva-Del-Rio N, Karle BM, Pereira RV. PMID: 37028970.
      View in: PubMed   Mentions:    Fields:    Translation:HumansAnimals
    7. Cystic ovarian disease in dairy cattle: Diagnostic accuracy when using B-mode and color Doppler ultrasound. J Dairy Sci. 2023 May; 106(5):3411-3420. Turner ZB, Lima FS, Conley AJ, McNabb BR, Rowe JD, Garzon A, Urbano TM, Morris CM, Pereira RV. PMID: 36894418.
      View in: PubMed   Mentions: 1     Fields:    Translation:Animals
    8. Prevalence of antimicrobial resistance in fecal Escherichia coli and Enterococcus spp. isolates from beef cow-calf operations in northern California and associations with farm practices. Front Microbiol. 2023; 14:1086203. Morris C, Wickramasingha D, Abdelfattah EM, Pereira RV, Okello E, Maier G. PMID: 36910206; PMCID: PMC9996069.
      View in: PubMed   Mentions: 3  
    9. In vitro evaluation of the effect of transport medium, temperature, and time on the recovery of Mannheimia haemolytica and Pasteurella multocida. JDS Commun. 2023 May; 4(3):214-218. Garzon A, Hoyos-Jaramillo A, Hustad S, Byrne BA, Fritz HM, Lehenbauer TW, Aly S, Pereira R. PMID: 37360122; PMCID: PMC10285246.
      View in: PubMed   Mentions: 1  
    10. Assessment of the knowledge and behavior of backyard and small-scale producers in California regarding disease prevention, biosecurity practices and antibiotics use. PLoS One. 2022; 17(11):e0277897. Lee K, Pereira RV, Martínez-López B, Busch RC, Pires AFA. PMID: 36409736.
      View in: PubMed   Mentions:    Fields:    Translation:HumansAnimals
    11. Comparison of florfenicol depletion in dairy goat milk using ultra-performance liquid chromatography with tandem mass spectrometry and a commercial on-farm test. Front Vet Sci. 2022; 9:991772. Richards ED, Pereira RV, Davis JL, Rowe JD, Clapham MO, Wetzlich SE, Rupchis BA, Tell LA. PMID: 36105005; PMCID: PMC9465015.
      View in: PubMed   Mentions: 1  
    12. Evaluation of antimicrobial resistance and risk factors for recovery of intrauterine Escherichia coli from cows with metritis on California commercial dairy farms. Sci Rep. 2022 08 17; 12(1):13937. Basbas C, Garzon A, Silva-Del-Rio N, Byrne BA, Karle B, Aly SS, Champagne JD, Williams DR, Lima FS, Machado VS, Pereira RV. PMID: 35978077; PMCID: PMC9386028.
      View in: PubMed   Mentions: 3     Fields:    Translation:HumansAnimalsCells
    13. Salmonella enterica Serovar Dublin from Cattle in California from 1993-2019: Antimicrobial Resistance Trends of Clinical Relevance. Antibiotics (Basel). 2022 Aug 17; 11(8). Fritz HM, Pereira RV, Toohey-Kurth K, Marshall E, Tucker J, Clothier KA. PMID: 36009979; PMCID: PMC9405026.
      View in: PubMed   Mentions: 3  
    14. Effect of Intramammary Dry Cow Antimicrobial Treatment on Fresh Cow's Milk Microbiota in California Commercial Dairies. Antibiotics (Basel). 2022 Jul 18; 11(7). Basbas C, Aly S, Okello E, Karle BM, Lehenbauer T, Williams D, Ganda E, Wiedmann M, Pereira RV. PMID: 35884217; PMCID: PMC9312063.
      View in: PubMed   Mentions: 1  
    15. Defining clinical diagnosis and treatment of puerperal metritis in dairy cows: A scoping review. J Dairy Sci. 2022 Apr; 105(4):3440-3452. Garzon A, Habing G, Lima F, Silva-Del-Rio N, Samah F, Pereira R. PMID: 35151476.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    16. Quantification of antibiotic resistance genes and mobile genetic in dairy manure. PeerJ. 2021; 9:e12408. Wang Y, Pandey P, Chiu C, Jeannotte R, Kuppu S, Zhang R, Pereira R, Weimer BC, Nitin N, Aly SS. PMID: 35036113; PMCID: PMC8710253.
      View in: PubMed   Mentions: 1     Fields:    
    17. Estimating the Rates of Acquisition and loss of Resistance of Enterobacteriaceae to Antimicrobial Drugs in Pre-Weaned Dairy Calves. Microorganisms. 2021 Oct 06; 9(10). Cella E, Okello E, Rossitto PV, Cenci-Goga BT, Grispoldi L, Williams DR, Sheedy DB, Pereira R, Karle BM, Lehenbauer TW, Aly SS. PMID: 34683424; PMCID: PMC8539406.
      View in: PubMed   Mentions: 2  
    18. Integration of statistical inferences and machine learning algorithms for prediction of metritis cure in dairy cows. J Dairy Sci. 2021 Dec; 104(12):12887-12899. de Oliveira EB, Ferreira FC, Galvão KN, Youn J, Tagkopoulos I, Silva-Del-Rio N, Pereira RVV, Machado VS, Lima FS. PMID: 34538497.
      View in: PubMed   Mentions: 2     Fields:    Translation:Animals
    19. Treatment practices after calving-related events on 45 dairy farms in California. J Dairy Sci. 2021 Nov; 104(11):12164-12172. Silva-Del-Río N, Valldecabres A, Espadamala A, García-Muñoz A, Pallares P, Lago A, Lima FS, Pereira RV. PMID: 34482983.
      View in: PubMed   Mentions: 1     Fields:    Translation:Animals
    20. Antibiotic Resistance Genes and Associated Phenotypes in Escherichia coli and Enterococcus from Cattle at Different Production Stages on a Dairy Farm in Central California. Antibiotics (Basel). 2021 Aug 26; 10(9). Jeamsripong S, Li X, Aly SS, Su Z, Pereira RV, Atwill ER. PMID: 34572624; PMCID: PMC8471271.
      View in: PubMed   Mentions: 6  
    21. Degradation of antibiotic resistance genes and mobile gene elements in dairy manure anerobic digestion. PLoS One. 2021; 16(8):e0254836. Wang Y, Pandey PK, Kuppu S, Pereira R, Aly S, Zhang R. PMID: 34432793; PMCID: PMC8386849.
      View in: PubMed   Mentions: 2     Fields:    Translation:Cells
    22. Dairy management practices associated with multi-drug resistant fecal commensals and Salmonella in cull cows: a machine learning approach. PeerJ. 2021; 9:e11732. Pandit PS, Williams DR, Rossitto P, Adaska JM, Pereira R, Lehenbauer TW, Byrne BA, Li X, Atwill ER, Aly SS. PMID: 34316397; PMCID: PMC8288115.
      View in: PubMed   Mentions:    Fields:    
    23. Survey on Antimicrobial Drug Use Practices in California Preweaned Dairy Calves. Front Vet Sci. 2021; 8:636670. Okello E, Williams DR, ElAshmawy WR, Adams J, Pereira RV, Lehenbauer TW, Aly SS. PMID: 33969034; PMCID: PMC8101284.
      View in: PubMed   Mentions: 9  
    24. Detection of Cephalosporin and Fluoroquinolone Resistance Genes via Novel Multiplex qPCR in Fecal Salmonella Isolates From Northern Californian Dairy Cattle, 2002-2016. Front Microbiol. 2021; 12:601924. Basbas C, Byrne BA, Chigerwe M, Escobar ED, Hodzic E, Pires AFA, Pereira RV. PMID: 33658984; PMCID: PMC7917062.
      View in: PubMed   Mentions:
    25. Genotypic antimicrobial resistance characterization of E. coli from dairy calves at high risk of respiratory disease administered enrofloxacin or tulathromycin. Sci Rep. 2020 11 09; 10(1):19327. Pereira RV, Foditsch C, Siler JD, Dulièpre SC, Altier C, Garzon A, Warnick LD. PMID: 33168881; PMCID: PMC7653923.
      View in: PubMed   Mentions: 3     Fields:    Translation:AnimalsCells
    26. Effect of continued metabolic acidification into the first 3 days of lactation on blood calcium status in postpartum dairy cattle: A randomized controlled trial. J Dairy Sci. 2020 Dec; 103(12):11762-11768. Maier GU, McNabb B, Pereira R, Bang H, Aly SS, Rossow HA. PMID: 33041044; PMCID: PMC7773151.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    27. Longitudinal effects of enrofloxacin or tulathromycin use in preweaned calves at high risk of bovine respiratory disease on the shedding of antimicrobial-resistant fecal Escherichia coli. J Dairy Sci. 2020 Nov; 103(11):10547-10559. Pereira RV, Altier C, Siler JD, Mann S, Jordan D, Warnick LD. PMID: 32861496.
      View in: PubMed   Mentions: 11     Fields:    Translation:AnimalsCells
    28. Evaluation of Heat and pH Treatments on Degradation of Ceftiofur in Whole Milk. Front Vet Sci. 2020; 7:288. Garzon A, Pandey P, Tell L, Aly SS, Poppenga R, Pereira R. PMID: 32528987; PMCID: PMC7256783.
      View in: PubMed   Mentions: 2  
    29. Effects of treatment with enrofloxacin or tulathromycin on fecal microbiota composition and genetic function of dairy calves. PLoS One. 2019; 14(12):e0219635. Foditsch C, Pereira RVV, Siler JD, Altier C, Warnick LD. PMID: 31825967; PMCID: PMC6905572.
      View in: PubMed   Mentions: 9     Fields:    Translation:Animals
    30. Evaluation of four commercial tests for detecting ceftiofur in waste milk bulk tank samples. PLoS One. 2019; 14(11):e0224884. Belmar M, Aly S, Karle BM, Pereira RV. PMID: 31714908; PMCID: PMC6850555.
      View in: PubMed   Mentions: 1     Fields:    Translation:AnimalsPHPublic Health
    31. Association between herd management practices and antimicrobial resistance in Salmonella spp. from cull dairy cattle in Central California. PeerJ. 2019; 7:e6546. Pereira R, Williams DR, Rossitto P, Adaska J, Okello E, Champagne J, Lehenbauer TW, Li X, Chase J, Nguyen T, Pires AFA, Atwill ER, Aly SS. PMID: 30923650; PMCID: PMC6431540.
      View in: PubMed   Mentions: 6     Fields:    
    32. Calf care personnel on dairy farms and their educational opportunities. J Dairy Sci. 2019 Apr; 102(4):3501-3511. Sischo WM, Moore DA, Pereira R, Warnick L, Moore DL, Vanegas J, Kurtz S, Heaton K, Kinder D, Siler J, Davis MA. PMID: 30772022.
      View in: PubMed   Mentions: 3     Fields:    Translation:HumansAnimals
    33. Metritis diagnosis and treatment practices in 45 dairy farms in California. J Dairy Sci. 2018 Oct; 101(10):9608-9616. Espadamala A, Pereira R, Pallarés P, Lago A, Silva-Del-Río N. PMID: 30077455.
      View in: PubMed   Mentions: 3     Fields:    Translation:AnimalsPHPublic Health
    34. Multidrug residues and antimicrobial resistance patterns in waste milk from dairy farms in Central California. J Dairy Sci. 2018 Sep; 101(9):8110-8122. Tempini PN, Aly SS, Karle BM, Pereira RV. PMID: 30126599.
      View in: PubMed   Mentions: 20     Fields:    Translation:AnimalsCells
    35. Antimicrobial resistance trends in fecal Salmonella isolates from northern California dairy cattle admitted to a veterinary teaching hospital, 2002-2016. PLoS One. 2018; 13(6):e0199928. Davidson KE, Byrne BA, Pires AFA, Magdesian KG, Pereira RV. PMID: 29953552; PMCID: PMC6023112.
      View in: PubMed   Mentions: 16     Fields:    Translation:AnimalsCells
    36. Impacts of feeding preweaned calves milk containing drug residues on the functional profile of the fecal microbiota. Sci Rep. 2018 01 11; 8(1):554. Pereira RVV, Carroll LM, Lima S, Foditsch C, Siler JD, Bicalho RC, Warnick LD. PMID: 29323259; PMCID: PMC5764986.
      View in: PubMed   Mentions: 17     Fields:    Translation:AnimalsPHPublic Health
    37. 16S rRNA analysis of diversity of manure microbial community in dairy farm environment. PLoS One. 2018; 13(1):e0190126. Pandey P, Chiu C, Miao M, Wang Y, Settles M, Del Rio NS, Castillo A, Souza A, Pereira R, Jeannotte R. PMID: 29304047; PMCID: PMC5755784.
      View in: PubMed   Mentions: 14     Fields:    Translation:Animals
    38. Whole-Genome Sequencing of Drug-Resistant Salmonella enterica Isolates from Dairy Cattle and Humans in New York and Washington States Reveals Source and Geographic Associations. Appl Environ Microbiol. 2017 06 15; 83(12). Carroll LM, Wiedmann M, den Bakker H, Siler J, Warchocki S, Kent D, Lyalina S, Davis M, Sischo W, Besser T, Warnick LD, Pereira RV. PMID: 28389536; PMCID: PMC5452826.
      View in: PubMed   Mentions: 52     Fields:    Translation:AnimalsCells
    39. Improving Dairy Organizational Communication from the Veterinarian's Perspective: Results of a Continuing Veterinary Medical Education Pilot Program. J Vet Med Educ. 2016; 43(1):33-40. Moore DA, Sischo WM, Kurtz S, Siler JD, Pereira RV, Warnick LD, Davis MA. PMID: 26751909; PMCID: PMC4822487.
      View in: PubMed   Mentions: 5     Fields:    Translation:HumansAnimals
    40. Oral Administration of Faecalibacterium prausnitzii Decreased the Incidence of Severe Diarrhea and Related Mortality Rate and Increased Weight Gain in Preweaned Dairy Heifers. PLoS One. 2015; 10(12):e0145485. Foditsch C, Pereira RV, Ganda EK, Gomez MS, Marques EC, Santin T, Bicalho RC. PMID: 26710101; PMCID: PMC4692552.
      View in: PubMed   Mentions: 46     Fields:    Translation:AnimalsCells
    41. Effect of heifer-raising practices on E. coli antimicrobial resistance and Salmonella prevalence in heifer raisers. Epidemiol Infect. 2015 Nov; 143(15):3256-65. Pereira RV, Siler JD, Cummings KJ, Davis MA, Warnick LD. PMID: 25904042; PMCID: PMC4809741.
      View in: PubMed   Mentions:    Fields:    Translation:AnimalsCells
    42. Isolation and characterization of Faecalibacterium prausnitzii from calves and piglets. PLoS One. 2014; 9(12):e116465. Foditsch C, Santos TM, Teixeira AG, Pereira RV, Dias JM, Gaeta N, Bicalho RC. PMID: 25551453; PMCID: PMC4281123.
      View in: PubMed   Mentions: 36     Fields:    Translation:AnimalsCells
    43. In vivo selection of resistant E. coli after ingestion of milk with added drug residues. PLoS One. 2014; 9(12):e115223. Pereira RV, Siler JD, Bicalho RC, Warnick LD. PMID: 25506918; PMCID: PMC4266680.
      View in: PubMed   Mentions: 20     Fields:    Translation:AnimalsCellsPHPublic Health
    44. Effect of preweaned dairy calf housing system on antimicrobial resistance in commensal Escherichia coli. J Dairy Sci. 2014 Dec; 97(12):7633-43. Pereira RV, Siler JD, Ng JC, Davis MA, Warnick LD. PMID: 25306277; PMCID: PMC4351789.
      View in: PubMed   Mentions: 11     Fields:    Translation:AnimalsCells
    45. Effect of on-farm use of antimicrobial drugs on resistance in fecal Escherichia coli of preweaned dairy calves. J Dairy Sci. 2014 Dec; 97(12):7644-54. Pereira RV, Siler JD, Ng JC, Davis MA, Grohn YT, Warnick LD. PMID: 25306279; PMCID: PMC4351791.
      View in: PubMed   Mentions: 30     Fields:    Translation:AnimalsCells
    46. Evaluation of the effects of ultraviolet light on bacterial contaminants inoculated into whole milk and colostrum, and on colostrum immunoglobulin G. J Dairy Sci. 2014 May; 97(5):2866-75. Pereira RV, Bicalho ML, Machado VS, Lima S, Teixeira AG, Warnick LD, Bicalho RC. PMID: 24582452; PMCID: PMC4351796.
      View in: PubMed   Mentions: 8     Fields:    Translation:AnimalsCells
    47. Multiresidue screening of milk withheld for sale at dairy farms in central New York State. J Dairy Sci. 2014 Mar; 97(3):1513-9. Pereira RV, Siler JD, Bicalho RC, Warnick LD. PMID: 24440252; PMCID: PMC4349524.
      View in: PubMed   Mentions: 11     Fields:    Translation:AnimalsPHPublic Health
    48. Reproductive performance of dairy cows resynchronized after pregnancy diagnosis at 31 (±3 days) after artificial insemination (AI) compared with resynchronization at 31 (±3 days) after AI with pregnancy diagnosis at 38 (±3 days) after AI. J Dairy Sci. 2013; 96(12):7630-9. Pereira RV, Caixeta LS, Giordano JO, Guard CL, Bicalho RC. PMID: 24094532; PMCID: PMC4353590.
      View in: PubMed   Mentions: 5     Fields:    Translation:Animals
    49. Effect of an injectable trace mineral supplement containing selenium, copper, zinc, and manganese on the health and production of lactating Holstein cows. Vet J. 2013 Aug; 197(2):451-6. Machado VS, Bicalho ML, Pereira RV, Caixeta LS, Knauer WA, Oikonomou G, Gilbert RO, Bicalho RC. PMID: 23598255.
      View in: PubMed   Mentions: 15     Fields:    Translation:Animals
    50. The effect of intrauterine administration of mannose or bacteriophage on uterine health and fertility of dairy cows with special focus on Escherichia coli and Arcanobacterium pyogenes. J Dairy Sci. 2012 Jun; 95(6):3100-9. Machado VS, Bicalho ML, Pereira RV, Caixeta LS, Bittar JH, Oikonomou G, Gilbert RO, Bicalho RC. PMID: 22612946.
      View in: PubMed   Mentions: 9     Fields:    Translation:AnimalsCells
    51. Microbial diversity in bovine papillomatous digital dermatitis in Holstein dairy cows from upstate New York. FEMS Microbiol Ecol. 2012 Feb; 79(2):518-29. Santos TM, Pereira RV, Caixeta LS, Guard CL, Bicalho RC. PMID: 22093037.
      View in: PubMed   Mentions: 20     Fields:    Translation:AnimalsCells
    52. Antimicrobial resistance and prevalence of virulence factor genes in fecal Escherichia coli of Holstein calves fed milk with and without antimicrobials. J Dairy Sci. 2011 Sep; 94(9):4556-65. Pereira RV, Santos TM, Bicalho ML, Caixeta LS, Machado VS, Bicalho RC. PMID: 21854928.
      View in: PubMed   Mentions: 8     Fields:    Translation:AnimalsCells
    53. Molecular and epidemiological characterization of bovine intrauterine Escherichia coli. J Dairy Sci. 2010 Dec; 93(12):5818-30. Bicalho RC, Machado VS, Bicalho ML, Gilbert RO, Teixeira AG, Caixeta LS, Pereira RV. PMID: 21094754.
      View in: PubMed   Mentions: 25     Fields:    Translation:HumansAnimalsCells
    54. Efficacy of formalin, copper sulfate, and a commercial footbath product in the control of digital dermatitis. J Dairy Sci. 2010 Aug; 93(8):3628-34. Teixeira AG, Machado VS, Caixeta LS, Pereira RV, Bicalho RC. PMID: 20655432.
      View in: PubMed   Mentions: 7     Fields:    Translation:Animals
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