M. Fonseca, L. C. Heider, H. Stryhn, J. T. McClure, D. Léger, D. Rizzo, L. Warder, S. Dufour, J.-P. Roy, D. F. Kelton, D. Renaud, H. W. Barkema et J. Sanchez. Antimicrobial use and its association with the isolation of and antimicrobial resistance in Campylobacter spp. recovered from fecal samples from Canadian dairy herds: A cross-sectional study. Prev. Vet. Med., vol. 215, 2023.

Nikky Millar, S. Dufour, H. Lardé, J.-P. Roy, C. Belloc, D. Francoz, M.-È. Paradis, M. Archambault, J. M. Fairbrother et C. Aenishaenslin. Barriers and facilitators to implementing a new regulation restricting antimicrobial use in dairy production in Québec, Canada: a qualitative study. Front. Vet. Sci., Vol. 10, 2023.

Nikky Millar, C. Aenishaenslin, H. Lardé, J.-P. Roy, C. Fourichon, D. Francoz, M.-È. Paradis et S. Dufour. Evidence of a decrease in sales of antimicrobials of very high importance for humans in dairy herds after a new regulation restricting their use in Quebec, Canada. Zoonoses and Public Health, Vol. 69, No. 4, pp. 370-381, 2022.

Maud de Lagarde, J.M. Fairbrother, M. Archambault, S. Dufour, D. Francoz, J. Massé, H. Lardé, C. Aenishaenslin, M-E Paradis et J-P. Roy. Impact of a regulation restricting critical antimicrobial usage on prevalence of antimicrobial resistance in Escherichia coli isolates from fecal and manure pit samples on dairy farms in Québec, Canada. Frontiers Veterinary Science, Vol. 9, 2022.

I. Nicola*, H. Chupin, J.-P. Roy, S. Buczinski, V. Fauteux, N. Picard-Hagen, R. Cue, et J. Dubuc. Association between prepartum nonesterified fatty acid serum concentrations and postpartum diseases in dairy cows. Journal of Dairy Science, 105: 9098-9106, 2022.

J.-P. Roy. Apport des tests rapides dans la maîtrise des infections mammaires : exemple du Petrifilm® dans des élevages au Québec. Le nouveau praticien vétérinaire. 2022.

T. LePage* et J.-P. Roy. Détecter correctement les vaches infectées au tarissement : la clef de la réussite du traitement sélectif au tarissement. Le nouveau praticien vétérinaire. 2022.

S. Buczinski, M.-P. Morin, J.-P. Roy, M. Rousseau, M. Villettaz-Robichaud et J. Dubuc. Use of ATP luminometry to assess the cleanliness of equipment used to collect and feed colostrum on dairy farms. Journal of Dairy Science, 105: 1638-1648, 2022.

J. C. Arango-Sabogal, G. Fecteau, E. Doré, G. Côté, J.-P. Roy, V. Wellemans, S. Buczinski. Bayesian accuracy estimates of environmental sampling for determining herd paratuberculosis infection status and its association with the within-herd individual fecal culture prevalence in Québec dairies. Preventive Veterinary Medecine, 197 : 1-9, 2021.

H. Lardé, D. Francoz, J.-P. Roy, M. Archambault, J. Massé, M.-È. Paradis et S. Dufour. Comparison of quantification methods to estimate farm-level usage of antimicrobials in medicated feed in dairy farms from Quebec, Canada. Microorganisms, 9 : 1-17, 2021. 

J. C. Arango-Sabogal, G. Fecteau, E. Doré, G. Côté, J.-P. Roy, V. Wellemans, S. Buczinski. Bayesian accuracy estimates of environmental sampling for determining herd paratuberculosis infection status and its association with the within-herd individual fecal culture prevalence in Québec dairies. Preventive Veterinary Medecine, 197, décembre 2021.

F. Kabera*, J.-P. Roy, G. Keefe and S. Dufour. Bayesian estimation of diagnostic accuracy of somatic cell counts history and on-farm milk culture using Petrifilm^® to identify quarters or cows that should be treated with antimicrobials in selective treatment protocols at dry off. Preventive Veterinary Medicine, 195, 2021.

J. Dubuc, V. Fauteux, J.-P. Roy, J. Denis-Robichaud, M. Rousseau et S. Buczinski.  Randomized controlled trial of re-insemination strategies in dairy cows diagnosed non-pregnant using color flow Doppler ultrasonography on d 21 after insemination. J. Dairy Sci., Short communication, 2 :381-386, 2021.

J. Denis-Robichaud, M. Christophe*, J.-P. Roy, S. Buczinski, M. Rousseau, M. Villettaz Robichaud et J. Dubuc.  Randomized controlled trial of pegbovigrastim as an adjunct therapy for naturally occurring severe clinical mastitis cases in dairy cows. J. Dairy Sci., Short communication, 2 :398-402, 2021.

E. Demontier, A. Dubé-Duquette, E. Brouillette, A. Larose, C. Ster, J.-F. Lucier, S. Rodrigue, S. Park, D. Jung, J. Ruffini, J. Ronholm, S. Dufour, J.-P. Roy, S. Ramanathan et F. Malouin. Relative virulence of Staphylococcus aureus bovine mastitis strains representing the main Canadian spa types and Clonal Complexes as determined using in vitro and in vivo mastitis models. J. Dairy Sci., 104:11904-11921, 2021.

S. Ferraro, G. Fecteau, J. Dubuc, D. Francoz, M. Rousseau, J.-P. Roy et S. Buczinski. Scoping review of the clinical definition of bovine respiratory disease complex and related clinical signs in adult dairy cows. J. Dairy Sci., 2021 Jun; 104(6):7095-7108. doi: 10.3168/jds.2020-19471. Epub 2021 Mar 23.

F. Kabera*, J.-P. Roy, M. Afifi, S. Godden, H. Stryhn, J. Sanchez et S. Dufour. Comparing blanket versus selective dry-cow treatment approaches for elimination and prevention of intramammary infections during the dry period: a systematic review and meta-analysis. Front. Vet. Sci. 2021 Jun 15;8:688450. doi: 10.3389/fvets.2021.688450. eCollection 2021.

J. Massé, H. Lardé, J. M. Fairbrother, J.-P. Roy, D. Francoz, S. Dufour et M. Archambault. Prevalence of antimicrobial resistance and characteristics of Escherichia coli isolates from fecal and manure pit samples on dairy farms in the province of Québec, Canada. Front. Vet. Sci.. 2021 May 21;8:654125. doi: 10.3389/fvets.2021.654125. eCollection 2021.

H. Lardé, D. Francoz, M. Archambault, J.-P. Roy, J. Massé, M.-È. Paradis et S. Dufour. Comparison quantification methods to estimate farm-level usage of antimicrobials other than in medicated feed in dairy farms from Quebec, Canada. Microorganisms. 2021 May 20;9(5):1106. doi: 10.3390/microorganisms9051106.

I. Robles, A. Zambelis, D. F. Kelton, H. W. Barkema, G. P. Keefe, J. P. Roy, M. A. G. von Keyserlingk, et T. J. DeVries. Associations of free-stall design and cleanliness with cow lying behavior, hygiene, lameness, and risk of high somatic cell count. J Dairy Sci. 2021 Feb;104(2):2231-2242. doi: 10.3168/jds.2020-18916. Epub 2020 Dec 11.

J. Dubuc, V. Fauteux, M. Villettaz Robichaud, J.-P. Roy, M. Rousseau, S.Buczinski. Efficacy of a second intrauterine cephapirin infusion for the treatment of purulent vaginal discharge and endometritis in postpartum dairy cows. J Dairy Sci. 2021 Mar;104(3):3559-3563. doi: 10.3168/jds.2020-19537. Epub 2020 Dec 25.

H. Lardé, S. Dufour, M. Archambault, J. Massé, J.-P. Roy, et D. Francoz. An observational cohort study on antimicrobial usage in dairy farms in Quebec, Canada. J Dairy Sci. 2021 Feb;104(2):1864-1880. doi: 10.3168/jds.2020-18848. Epub 2020 Nov 30.

F. Kabera*, S. Dufour, G. Keefe, M. Cameron et J.-P. Roy. Evaluation of a quarter-based selective dry cow therapy using Petrifilm on-farm milk culture: A randomized controlled trial. J Dairy Sci. 2020 Aug;103(8):7276-7287. doi: 10.3168/jds.2019-17438. Epub 2020 Jun 3.

S. Ferraro*, A. Desrochers, S. Nichols, D. Francoz, M. Babkine, H. Lardé, J.-P. Roy, G. Fecteau. Retroperitoneal abscesses following a paralumbar fossa laparotomy in cattle: case series of 32 cases (1995-2017). J Am Vet Med Assoc. 2020 Apr 1;256(7):814-821. doi: 10.2460/javma.256.7.814.

J.-P. Roy, M. Archambault, A. Desrochers, J. Dubuc, S. Dufour, D. Francoz, M.-È. Paradis et M. Rousseau. New Quebec regulation on the use of antimicrobials of very high importance in food animals: Implementation and impacts in dairy cattle practice. Can. Vet. Journal, 2020, Vol.61 No.2 pp.193-196.

H. Lardé, S. Dufour, M. Archambault, D. Léger, D. Loest, J.-P. Roy and D. Francoz. Assignment of Canadian Defined Daily Doses and Canadian Defined Course Doses for quantification of antimicrobial usage in cattle. Frontiers in Veterinary Science, 2020. Vol 7, article 10.

S. Ferraro*, S. Buczinski, S. Dufour, M. Rousseau, J. Dubuc, J.-P. Roy et A. Desrochers. Bayesian assessment of diagnostic accuracy of a commercial borescope and of trimming chute exams for diagnosing digital dermatitis in dairy cows. Journal of Dairy Science, 2020. DOI: 10.3168/jds.2019-17129.

I. Robles, D. Kelton, H. Barkema, G. Keefe, J. P. Roy, M. von Keyserlingk et T. DeVries. Bacterial concentrations in bedding and their association with cow hygiene and milk quality. Animal, 2020 Vol.14 No.5 pp.1052-1066. doi:10.1017/S1751731119002787.

J. Dubuc, J. Houle, M. Rousseau, J.-P. Roy, and S. Buczinski. Accuracy of corpus luteum color flow Doppler ultrasonography to diagnose non-pregnancy in dairy cows on day 21 after insemination. Journal of Dairy Science, 2020. Vol 103 (2), pp. 2019 – 2023.

S. Naushad, U. Kanevets, D. Nobrega, D. Carson, S. Dufour, J.-P. Roy, J. Lewis et H. W. Barkema. Characterization and genome analysis of Staphylococcus debuckii sp. nov., a coagulase-negative species from bovine milk. International Journal of systematic and evolutionary microbiology, 2019. Aug;69(8):2239-2249.

S. Pichette-Jolette*, G. Millette, E. Demontier, D. Bran-Barrera, M. Cyrenne, C. Ster, D. Haine, G. Keefe, F. Malouin et J.-P. Roy. Partial Prediction of the Duration and the Clinical Status of Staphylococcus aureus Bovine Intramammary Infections Based on the Phenotypic and Genotypic Analysis of Isolates. Veterinary Microbiology, 2019. 228: 188-195.

S. Dufour, V. Wellemans, J.-P. Roy, P. Lacasse, A. Ordonez-Iturriaga et D. Francoz. Non-antimicrobial Approaches at Drying-Off for Treating and Preventing Intramammary Infections in Dairy Cows. Part 1. Meta-analyses of Efficacy of Using an Internal Teat Sealant Without a Concomitant Antimicrobial Treatment. Animal Health Research Reviews, 2019. 20 (1) : 86-97.

C. Krug*, P.-A. Morin, P. Lacasse, J.-P. Roy, J. Dubuc et S. Dufour. A randomized controlled trial on the effect of incomplete milking during the first five days in milk on reproductive performance of dairy cows. Journal of Dairy Science, 2018. Dec;101(12):11330-11341.

C. Krug*, T. J. DeVries, J.-P. Roy, J. Dubuc et S. Dufour. Precision of the algometer for quantifying avoidance reaction when applied to the udder of lactating dairy cows. Frontiers in Veterinary Science, 2018. Sep 12;5:215.

C. Krug*, P.-A. Morin, P. Lacasse, J.-P. Roy, J. Dubuc et S. Dufour. Effect of incomplete milking during the first five days in milk on udder and reproductive tract health: results from a randomized controlled trial. Journal of Dairy Science, 2018. 101 (10) : 9275-9286.

C. Krug*, P.-A. Morin, P. Lacasse, D.E. Santschi, J.-P. Roy, J. Dubuc et S. Dufour. A randomized controlled trial on the effect of incomplete milking during the first five days in milk on culling hazard and on milk production and composition of dairy cows. Journal of Dairy Science, 2018. 101 (5) : 4367-4377.

F. Kabera*, S. Dufour, G. Keefe et J.-P. Roy. An observational cohort study on persistency of an internal teat sealant residues in milk after calving in dairy cows. Journal of Dairy Science, 2018. 101 (7) : 6399-6412.

M. Puerto-Parada, J. C. Arango-Sabogal, J. Paré, E. Doré, G. Côté, V. Wellemans, S. Buczinski, J.-P. Roy, O. Labrecque, G. Fecteau. Risk factors associated with Mycobacterium avium subsp. paratuberculosis herd status in Québec dairy herds. Preventive Veterinary Medicine, 2018. 152 : 74-80.

J. Labonté*, J. Dubuc, J.-P. Roy and S. Buczinski. Prognostic values of cardiac troponin I and L-lactatemia blood values in dairy cows affected by downer cow syndrome. Journal of Veterinary Internal Medicine, 2018. 32 (1): 484-490.

P. A. Morin, C. Krug*, P. Lacasse, Y. Chorfi, J. Dubuc, J.-P.  Roy, D. Santschi et S. Dufour. A randomized controlled trial on the effect of incomplete milking during early lactation on ketonemia and body condition loss in Holstein dairy cows. Journal of Dairy Science, 2018. 101 (5) : 4513-4526.

A. Mohamed, F. Kabera*, H. Stryhn, J P Roy, L. Heider, S. Godden, W. Montelpare, J. Sanchez et S. Dufour. Antimicrobial-based dry cow therapy approaches for cure and prevention of intramammary infections: a protocol for a systematic review and meta-analysis. Animal Health Research Reviews, 2018 Vol.19 No.1 pp.74-78. doi.org/10.1017/S1466252318000051.