| Staphylococcus aureus Isolates from Bovine Mastitis in Eight Countries: Genotypes, Detection of Genes Encoding Different Toxins and Other Virulence Genes V Monistero, HU Graber, C Pollera, P Cremonesi, B Castiglioni, E Bottini, ... Toxins 10 (6), 247, 2018 | 120 | 2018 |
| Antibacterial activity of the lactoperoxidase system against food-borne pathogens in Saanen and South African Indigenous goat milk E Seifu, EM Buys, EF Donkin, IM Petzer Food Control 15 (6), 447-452, 2004 | 88 | 2004 |
| Somatic cell count thresholds in composite and quarter milk samples as indicator of bovine intramammary infection status J Karzis, EF Donkin, EC Webb, EMC Etter, IM Petzer Onderstepoort Journal of Veterinary Research 84 (1), 1-10, 2017 | 82 | 2017 |
| Trends in udder health and emerging mastitogenic pathogens in South African dairy herds IM Petzer, J Karzis, JC Watermeyer, TJ Van der Schans, R Van Reenen Journal of the South African Veterinary Association 80 (1), 17-22, 2009 | 60 | 2009 |
| Microbiological quality of goat's milk obtained under different production systems JK Kyozaire, CM Veary, IM Petzer, EF Donkin Journal of the South African Veterinary Association 76 (2), 69-73, 2005 | 57 | 2005 |
| Importance of bovine mastitis in Africa TE Motaung, KR Petrovski, IM Petzer, O Thekisoe, TJ Tsilo Animal Health Research Reviews 18 (1), 58-69, 2017 | 55 | 2017 |
| Sensitivity and specificity of a hand-held milk electrical conductivity meter compared to the California mastitis test for mastitis in dairy cattle GT Fosgate, IM Petzer, J Karzis The Veterinary Journal 196 (1), 98-102, 2013 | 52 | 2013 |
| Different distribution of antimicrobial resistance genes and virulence profiles of Staphylococcus aureus strains isolated from clinical mastitis in six countries V Monistero, A Barberio, F Biscarini, P Cremonesi, B Castiglioni, ... Journal of dairy science 103 (4), 3431-3446, 2020 | 46 | 2020 |
| Practical mastitis control in dairy herds. A field guide on various aspects of udder health for the dairy practitioner. WH Giesecke, JH Preez, IM Petzer | 45 | 1994 |
| Antimicrobial resistance patterns and biofilm formation of coagulase-negative Staphylococcus species isolated from subclinical mastitis cow milk samples … L Phophi, IM Petzer, DN Qekwana BMC veterinary research 15, 1-9, 2019 | 43 | 2019 |
| Validity of somatic cell count as indicator of pathogen-specific intramammary infections J Karzis, EF Donkin, IM Petzer, EC Webb, EMC Etter Journal of the South African Veterinary Association 88 (1), 1-10, 2017 | 43 | 2017 |
| Intramammary infection rate during the dry period in cows that received blanket dry cow therapy: efficacy of 6 different dry-cow intra-mammary antimicrobial products IM Petzer, DC Lourens, TJ Van der Schans, JC Watermeyer, ... Journal of the South African Veterinary Association 80 (1), 23-30, 2009 | 33 | 2009 |
| Value of tests for evaluating udder health in dairy goats: somatic cell counts, California Milk Cell Test and electrical conductivity IM Petzer, EF Donkin, E Du Preez, J Karzis, TJ Van der Schans, ... Onderstepoort Journal of Veterinary Research 75 (4), 279-287, 2008 | 24 | 2008 |
| Congenital cardiac defects in two closely related Jersey calves IM Penrith, ML*, Bastianello, SS** & Petzer Journal of the South African Veterinary Association 65 (1), 31-35, 1994 | 22 | 1994 |
| The influence of intramammary antibiotic treatment, presence of bacteria, stage of lactation and parity in dairy goats as measured by the California Milk Cell Test and somatic … J Karzis, EF Donkin, IM Petzer Onderstepoort Journal of Veterinary Research 74 (2), 161-167, 2007 | 19 | 2007 |
| Injectable organic and inorganic selenium in dairy cows–Effects on milk, blood and somatic cell count levels IM Petzer, GM Ferreira Onderstepoort Journal of Veterinary Research 86 (1), 1-8, 2019 | 17 | 2019 |
| Proactive udder health management in South Africa and monitoring of antibiotic resistance of Staphylococcus aureus in dairy herds from 2001 to 2010 J Karzis, IM Petzer, EF Donkin, V Naidoo Journal of the South African Veterinary Association 89 (1), 1-8, 2018 | 14 | 2018 |
| Intramammary antibiotics in dairy goats: effect of stage of lactation, parity and milk volume on withdrawal periods, and the effect of treatment on milk compositional quality J Karzis, EF Donkin, IM Petzer Onderstepoort Journal of Veterinary Research 74 (3), 243-249, 2007 | 13 | 2007 |
| Climatic and regional antibiotic resistance patterns of Staphylococcus aureus in South African dairy herds EMC Etter, V Naidoo, EF Donkin, IM Petzer, J Karzis Onderstepoort Journal of Veterinary Research 86 (1), 1-9, 2019 | 12 | 2019 |
| Prevalence of mastitis pathogens in South African pasture-based and total mixed ration-based dairies during 2008 and 2013 IM Petzer, D Blignaut, P Thompson Onderstepoort Journal of Veterinary Research 85 (1), 1-7, 2018 | 11 | 2018 |
