| Body condition related to ketosis and reproductive performance in Norwegian dairy cows P Gillund, O Reksen, YT Gröhn, K Karlberg Journal of dairy science 84 (6), 1390-1396, 2001 | 503 | 2001 |
| Milk culture results in a large Norwegian survey—effects of season, parity, days in milk, resistance, and clustering O Østerås, L Sølverød, O Reksen Journal of dairy science 89 (3), 1010-1023, 2006 | 208 | 2006 |
| A comparative study of reproductive performance in organic and conventional dairy husbandry O Reksen, A Tverdal, E Ropstad Journal of dairy science 82 (12), 2605-2610, 1999 | 142 | 1999 |
| Prevalence of clinical and subclinical mastitis and quality of milk on smallholder dairy farms in Tanzania RH Mdegela, R Ryoba, ED Karimuribo, EJ Phiri, T Loken, O Reksen, ... Journal of the South African Veterinary Association 80 (3), 163-168, 2009 | 140 | 2009 |
| Postpartum deaths: piglet, placental, and umbilical characteristics V Rootwelt, O Reksen, W Farstad, T Framstad Journal of Animal Science 91 (6), 2647-2656, 2013 | 86 | 2013 |
| The association between immunoglobulin G in sow colostrum and piglet plasma C Kielland, V Rootwelt, O Reksen, T Framstad Journal of Animal Science 93 (9), 4453-4462, 2015 | 80 | 2015 |
| Effects of photointensity and photoperiod on milk yield and reproductive performance of Norwegian red cattle O Reksen, A Tverdal, K Landsverk, E Kommisrud, KE Bøe, E Ropstad Journal of dairy science 82 (4), 810-816, 1999 | 74 | 1999 |
| Relationships among body condition score, milk constituents, and postpartum luteal function in Norwegian dairy cows O Reksen, Ø Havrevoll, YT Gröhn, T Bolstad, A Waldmann, E Ropstad Journal of Dairy Science 85 (6), 1406-1415, 2002 | 72 | 2002 |
| Reproductive performance, udder health, and antibiotic resistance in mastitis bacteria isolated from Norwegian Red cows in conventional and organic farming RT Garmo, S Waage, S Sviland, BIF Henriksen, O Østerås, O Reksen Acta Veterinaria Scandinavica 52, 1-13, 2010 | 66 | 2010 |
| Progesterone concentrations in milk fat at first insemination—effects on non-return and repeat-breeding A Waldmann, O Reksen, K Landsverk, E Kommisrud, E Dahl, AO Refsdal, ... Animal Reproduction Science 65 (1-2), 33-41, 2001 | 61 | 2001 |
| Relationships between milk culture results and treatment for clinical mastitis or culling in Norwegian dairy cattle O Reksen, L Sølverød, AJ Branscum, O Østerås Journal of dairy science 89 (8), 2928-2937, 2006 | 59 | 2006 |
| Effects of gestational and lactational exposure to low doses of PCBs 126 and 153 on anterior pituitary and gonadal hormones and on puberty in female goats JL Lyche, IC Oskam, JU Skaare, O Reksen, T Sweeney, E Dahl, ... Reproductive Toxicology 19 (1), 87-95, 2004 | 57 | 2004 |
| Associations between intrapartum death and piglet, placental, and umbilical characteristics V Rootwelt, O Reksen, W Farstad, T Framstad Journal of Animal Science 90 (12), 4289-4296, 2012 | 54 | 2012 |
| Effects of sperm concentration at semen collection and storage period of frozen semen on dairy cow conception T Haugan, YT Gröhn, E Kommisrud, E Ropstad, O Reksen Animal reproduction science 97 (1-2), 1-11, 2007 | 49 | 2007 |
| The detection of intramammary infections using online somatic cell counts G Dalen, A Rachah, H Nørstebø, YH Schukken, O Reksen Journal of dairy science 102 (6), 5419-5429, 2019 | 48 | 2019 |
| Seasonal effects of semen collection and artificial insemination on dairy cow conception T Haugan, O Reksen, YT Gröhn, E Kommisrud, E Ropstad, E Sehested Animal reproduction science 90 (1-2), 57-71, 2005 | 48 | 2005 |
| Relationships between milk culture results and milk yield in Norwegian dairy cattle O Reksen, L Sølverød, O Østerås Journal of dairy science 90 (10), 4670-4678, 2007 | 47 | 2007 |
| Seasonal changes in nutritional status and reproductive performance of Zebu cows kept under a traditional agro-pastoral system in Tanzania NL Kanuya, MK Matiko, R Nkya, SBP Bittegeko, MN Mgasa, O Reksen, ... Tropical Animal Health and Production 38, 511-519, 2006 | 46 | 2006 |
| A retrospective study on effects of storage time of liquid boar semen on reproductive performance in Norwegian swine T Haugan, O Reksen, YT Gröhn, AH Gaustad, PO Hofmo Theriogenology 64 (4), 891-901, 2005 | 44 | 2005 |
| Relationships between milk culture results and composite milk somatic cell counts in Norwegian dairy cattle O Reksen, L Sølverød, O Østerås Journal of Dairy Science 91 (8), 3102-3113, 2008 | 42 | 2008 |
