Management factors associated with the incidence of clinical mastitis over the non-lactation period and bulk tank somatic cell count during the subsequent lactation

References

• Anonymous Managing Mastitis , 3rd Edtn Livestock Improvement Corporation Hamilton, , New Zealand 2001a
   Google Scholar
• Anonymous Dairy Statistics 2000-2001 Livestock Improvement Corporation Hamilton, , New Zealand 2001b Http://www.dairygateway.co.nz.
   Google Scholar
• Barkema , HW , Schukken , YH , Lam , TJGM , Beiboer , ML , Benedictus , G and Brand , A . 1998 . Management practices associated with low, medium, and high somatic cell counts in bulk milk . Journal of Dairy Science , 81 : 1917 – 1927 .
   PubMed Web of Science ®Google Scholar
• Barkema , HW , Van der Ploeg , JD , Schukken , YH , Lam , TJ , Benedictus , G and Brand , A . 1999 . Management style and its association with bulk milk somatic cell count and incidence rate of clinical mastitis . Journal of Dairy Science , 82 : 1655 – 1663 .
   PubMed Web of Science ®Google Scholar
• Bartlett , PC , Miller , GY , Anderson , CR and Kirk , JH . 1990 . Milk production and somatic cell count in Michigan dairy herds . Journal of Dairy Science , 73 : 2794 – 2800 .
   PubMed Web of Science ®Google Scholar
• Boddie , RL and Nickerson , SC . 1986 . Dry cow therapy: Effects of method of drug administration on occurrence of intramammary infection . Journal of Dairy Science , 69 : 253 – 257 .
   Google Scholar
• Browning , JW , Mein , GA , Brightling , P , Nicholls , TJ and Barton , M . 1994 . Strategies for mastitis control — dry cow therapy and culling . Australian Veterinary Journal , 71 : 179 – 181 .
   PubMedGoogle Scholar
• Bushe , T and Oliver , SP . 1987 . Natural protective factors in bovine mammary secretions following different methods of milk cessation . Journal of Dairy Science , 70 : 696 – 704 .
   Google Scholar
• Coats , L . 1998 . An outbreak of Pseudomonas mastitis . New Zealand Veterinary Journal , 46 : 39 – 39 .
   PubMed Web of Science ®Google Scholar
• Duirs , GF and Macmillan , KL . 1979 . Interrelationships between somatic cell counts, production, age and mastitis organisms in individual cows . Proceedings of the New Zealand Society of Animal Production , 35 : 175 – 179 .
   Google Scholar
• Eberhart , RJ . 1986 . Management of dry cows to reduce mastitis . Journal of Dairy Science , 69 : 1721 – 1732 .
   PubMedGoogle Scholar
• Erskine , RJ , Eberhart , RJ , Hutchinson , LJ and Spencer , SB . 1987 . Herd management and prevalence of mastitis in dairy herds with high and low somatic cell counts . Journal of the American Veterinary Medical Association , 190 : 1411 – 1416 .
   PubMed Web of Science ®Google Scholar
• Faye , B . 1991 . Interrelationships between health status and farm management system in French dairy herds . Preventive Veterinary Medicine , 12 : 133 – 152 .
   Google Scholar
• Ferns , L , Dohoo , I and Donald , A . 1991 . A case control study of Nocardia mastitis in Nova Scotia dairy herds . Canadian Veterinary Journal , 32 : 673 – 677 .
   Google Scholar
• Goodger , WJ , Farver , T , Pelletier , J , Johnson , P , de Snayer , G and Galland , J . 1993 . The association of milking management practices with bulk tank somatic cell count . Preventive Veterinary Medicine , 15 : 235 – 251 .
   Web of Science ®Google Scholar
• Hodges , RT , MacPherson , M , Leach , RH and Moller , S . 1983 . Isolation of Mycoplasma dispar from mastitis in dry cows . New Zealand Veterinary Journal , 31 : 60 – 61 .
   PubMed Web of Science ®Google Scholar
• Holdaway , RJ . 1990 . A comparison of methods for the diagnosis of bovine subclinical mastitis within New Zealand dairy herds , Palmerston North : Massey University . PhD thesis
   Google Scholar
• Holdaway , RJ , Holmes , CW and Steffert , IJ . 1996 . A comparison of indirect methods for diagnosis of subclinical intramammary infection in lactating dairy cows. 1. The effects of bacterial infection, stage of lactation and age of cow on 8 parameters in foremilk from individual quarters, with an initial study of differences between milk fractions . Australian Journal of Dairy Technology , 51 : 64 – 71 .
   Google Scholar
• Khaitsa , ML , Wittum , TE , Smith , KL , Henderson , JL and Hoblet , KH . 2000 . Herd characteristics and management practices associated with bulk-tank somatic cell counts in herds in official dairy herd improvement association programs in Ohio . American Journal of Veterinary Research , 61 : 1092 – 1098 .
   Google Scholar
• Lacy-Hulbert , SJ , Woolford , MW , Nicholas , GD , Prosser , CG and Stelwagen , K . 1999 . Effect of milking frequency and pasture intake on milk yield and composition of late lactation cows . Journal of Dairy Science , 82 : 1232 – 1239 .
   PubMed Web of Science ®Google Scholar
• Lehenbauer , TW , Jones , T and Collar , L . 1998 . The impact of free-stall housing on somatic cell count in bulk tank milk . Bovine Practitioner , 32 : 13 – 18 .
   Google Scholar
• Leslie , KE , Barnum , DE and Lissemore , KD . 1992 . “ The role of pre-treatment teat-end preparation in the safety and efficacy of dry-cow therapy ” . In Proceedings of the National Mastitis Council 234 – 234 .
   Google Scholar
• Leslie , K , Duffield , T , LeBlanc , S and Ten , Hag . 2001 . The influence of negative energy balance on udder health . Journal of Dairy Science , 84 ( Supplement 1 ) : 187 – 187 .
   Google Scholar
• Macmillan , KL , Duirs , GF and Duganzich , DM . 1983 . Associations between dry cow therapy, clinical mastitis, and somatic cell count score with milk and fat production in ten New Zealand dairy herds . Journal of Dairy Science , 66 : 259 – 265 .
   PubMed Web of Science ®Google Scholar
• McDougall , S . 1998 . Efficacy of two antibiotic treatments in curing clinical and subclinical mastitis in lactating dairy cows . New Zealand Veterinary Journal , 46 : 226 – 232 .
   PubMed Web of Science ®Google Scholar
• Natzke , RP , Everett , RW and Bray , DR . 1974 . Effect of drying-off practices on mastitis infection . Journal of Dairy Science , 58 : 1828 – 1835 .
   Google Scholar
• Neave , FK , Oliver , J , Dodd , FH and Higgs , TM . 1968 . Rate of infection of milked and unmilked udders . Journal of Dairy Research , 35 : 127 – 127 .
   Google Scholar
• Nugent , C , Murdough , PA , Pankey , JW and Barlow , J . 2001 . Establishing and comparing profiles of antimicrobial resistance in Staphylococcus aureus from selected organic and conventional dairy farms in Vermont . Journal of Dairy Science , 84 ( Supplement 1 ) : 334 – 334 .
   Google Scholar
• Ollis , GW , Schoonderwoerd , M and Schipper , C . 1991 . An investigation of risk factors for Nocardial mastitis in central Alberta dairy herds . Canadian Veterinary Journal , 32 : 227 – 231 .
   Google Scholar
• Pankey , JW , Barker , RM , Twomey , A and Duirs , G . 1982 . A note on the effectiveness of dry cow therapy in New Zealand dairy herds . New Zealand Veterinary Journal , 30 : 50 – 52 .
   PubMed Web of Science ®Google Scholar
• Reneau , JK . 1986 . Effective use of dairy herd improvement somatic cell counts in mastitis control . Journal of Dairy Science, , 69 : 1708 – 1720 .
   Google Scholar
• Rollins , LD , Pocurull , DW , Mercer , HD , Natzke , RP and Postle , DS . 1974 . Use of antibiotics in a dairy herd and their effect on resistance determinants in enteric and environmental Escherichia coli . Journal of Dairy Science , 57 : 944 – 950 .
   Google Scholar
• Schukken , YH , Grommers , FJ , van der Geer , D , Erb , HN and Brand , A . 1990 . Risk factors for clinical mastitis in herds with a low bulk milk somatic cell count. 1. Data and risk factors for all cases . Journal of Dairy Science , 73 : 3463 – 3471 .
   PubMed Web of Science ®Google Scholar
• Schukken , YH , Weersink , A , Leslie , KE and Martin , SW . 1993 . Dynamics and regulation of bulk milk somatic cell counts . Canadian Journal of Veterinary Research , 57 : 131 – 135 .
   PubMed Web of Science ®Google Scholar
• Schultze , WD . 1983 . Effects of selective regimen of dry cow therapy on intramammary infection and on antibiotic sensitivity of surviving pathogens . Journal of Dairy Science , 66 : 892 – 903 .
   Google Scholar
• Smith , A , Westgarth , DR , Jones , MR , Neave , FK , Dodd , FH and Brander , GC . 1967 . Methods of reducing the incidence of udder infection in dry cows . Veterinary Record , 81 : 504 – 510 .
   PubMed Web of Science ®Google Scholar
• Stark , DA and Anderson , NG . 1990 . A case control study of Nocardia mastitis in Ontario dairy herds . Canadian Veterinary Journal , 31 : 197 – 201 .
   Google Scholar
• Williamson , JH , Woolford , MW and Day , AM . 1995 . The prophylactic effect of a dry-cow antibiotic against Streptococcus uberis . New Zealand Veterinary Journal , 43 : 228 – 234 .
   PubMed Web of Science ®Google Scholar
• Woolford , MW , Hook , IS , Eden , MT and Joe , AK . 1995 . The “SAMM plan”: a seasonal approach to managing mastitis , 59 – 63 . Tel Aviv : The 3rd IDF International Mastitis Seminar .
   Google Scholar