- Invited review: Genomic selection in dairy cattle: progress and challenges
B J Hayes
Department of Primary Industries Victoria, Biosciences Research Division, Bundoora, Australia
J Dairy Sci 92:433-43. 2009
..Many challenges with genomic selection and its implementation remain, including increasing the accuracy of GEBV, integrating genomic information into national and international genetic evaluations, and managing long-term genetic gain...
- Hot topic: a unified approach to utilize phenotypic, full pedigree, and genomic information for genetic evaluation of Holstein final score
Animal and Dairy Science Department, University of Georgia, Athens 30602 Instituto Nacional de Investigación Agropecuaria, Las Brujas 90200, Uruguay
J Dairy Sci 93:743-52. 2010
..Advantages of single-step evaluations should increase in the future when animals are pre-selected on genotypes...
- Distribution and location of genetic effects for dairy traits
J B Cole
Animal Improvement Programs Laboratory, ARS, USDA, Beltsville, MD 20705 2350, USA
J Dairy Sci 92:2931-46. 2009
..Results validate quantitative genetic assumptions that most traits are due to the contributions of a large number of genes of small additive effect, rather than support the finite locus model...
- A validated genome-wide association study in 2 dairy cattle breeds for milk production and fertility traits using variable length haplotypes
J E Pryce
Biosciences Research Division, Department of Primary Industries Victoria, Bundoora 3083, Australia
J Dairy Sci 93:3331-45. 2010
..Promising candidate genes have been identified in several of the validated regions...
- The genomic evaluation system in the United States: past, present, future
G R Wiggans
Animal Improvement Programs Laboratory, Agricultural Research Service, USDA, Beltsville, MD 20705 2350, USA
J Dairy Sci 94:3202-11. 2011
- Survey of the incidence and aetiology of mastitis on dairy farms in England and Wales
A J Bradley
School of Clinical Veterinary Science, University of Bristol, Langford
Vet Rec 160:253-7. 2007
..Staphylococcus aureus and coagulase-positive staphylococci together accounted for 10 per cent of the samples with high somatic cell counts; 39 per cent produced no bacterial growth...
- Technical note: Derivation of equivalent computing algorithms for genomic predictions and reliabilities of animal merit
MTT Agrifood Research Finland, FIN 31600 Jokioinen, Finland
J Dairy Sci 92:2971-5. 2009
..There were 3 solving strategies compared: 1 method that formed and stored the coefficient matrix in memory and 2 methods that iterate on data. Finally, formulas for reliabilities of genomic predictions of merit were developed...
- Reproductive loss in high-producing dairy cattle: where will it end?
M C Lucy
Department of Animal Sciences, University of Missouri, Columbia 65211, USA
J Dairy Sci 84:1277-93. 2001
..For this to occur, research funding must be increased above its current level and a renewed emphasis must be placed on solving the emerging crisis of infertility in dairy cows...
- Genetic diversity and spoilage potentials among Pseudomonas spp. isolated from fluid milk products and dairy processing plants
Department of Food Science, Cornell University, Ithaca, New York 14853, USA
Appl Environ Microbiol 69:130-8. 2003
..We conclude that ribotyping provides a reliable method for differentiating Pseudomonas strains with dairy food spoilage potential...
- A genome scan to detect quantitative trait loci for economically important traits in Holstein cattle using two methods and a dense single nucleotide polymorphism map
H D Daetwyler
Centre for Genetic Improvement of Livestock, Department of Animal and Poultry Science, University of Guelph, Guelph, Ontario, Canada
J Dairy Sci 91:3225-36. 2008
..The LDRM was well suited for a first genome scan due to its approximately 8 times lower computational demands. Further fine mapping should be applied on the chromosomal regions of interest found in this study...
- Identification of protozoa in dairy lagoon wastewater that consume Escherichia coli O157:H7 preferentially
Subbarao V Ravva
Produce Safety and Microbiology Research Unit, United States Department of Agriculture, Agriculture Research Service, Western Regional Research Center, Albany, California, United States of America
PLoS ONE 5:e15671. 2010
..Therefore, attempts to enrich protozoa to decrease EcO157 from dairy lagoons, may correspond to an increase in protozoa similar to Vorticella and possibly facilitate transport of bacterial pathogens to food crops grown in proximity...
- Invited review: effect of udder health management practices on herd somatic cell count
Department of Pathology and Microbiology, Faculty of Veterinary Medicine, University of Montreal, C P 5000, St Hyacinthe, Quebec, J2S 7C6, Canada
J Dairy Sci 94:563-79. 2011
- A survey of bovine colostrum composition and colostrum management practices on Pennsylvania dairy farms
S I Kehoe
Department of Dairy and Animal Science, The Pennsylvania State University, University Park 16802, USA
J Dairy Sci 90:4108-16. 2007
- Multiple quantitative trait loci mapping with cofactors and application of alternative variants of the false discovery rate in an enlarged granddaughter design
Institute of Animal Breeding and Husbandry, University of Kiel, D 24098 Kiel, Germany
Genetics 168:1019-27. 2004
..The relatively high power of this study can be attributed to the size of the experiment, to the QTL analysis with cofactors, and to the application of an appropriate FDR...
- Invited review: Mastitis in dairy heifers: nature of the disease, potential impact, prevention, and control
S De Vliegher
M team and Mastitis and Milk Quality Research Unit, Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Merelbeke 9820, Belgium
J Dairy Sci 95:1025-40. 2012
..However, the pathogenesis and epidemiology of the disease remain largely unknown and more pathogen-specific risk factors should be identified to optimize current prevention programs...
- Prevalence of Coxiella burnetii antibodies in Danish dairy herds
Jens F Agger
Department of Large Animal Sciences, Faculty of Life Sciences, University of Copenhagen, Groennegaardsvej 8, Frederiksberg, DK 1870 C, Denmark
Acta Vet Scand 52:5. 2010
..The result supports the hypothesis of an increase in the prevalence of positive dairy herds compared to previous years...
- Estimation of environmental sensitivity of genetic merit for milk production traits using a random regression model
M P L Calus
Animal Sciences Group, Division Animal Resources Development, P O Box 65, 8200 AB Lelystad, The Netherlands
J Dairy Sci 86:3756-64. 2003
..Consequently, very little reranking occurred based on the economic index...
- First dairying in green Saharan Africa in the fifth millennium BC
Organic Geochemistry Unit, School of Chemistry, University of Bristol, Cantock s Close, Bristol BS8 1TS, UK
Nature 486:390-4. 2012
..it impossible to ascertain herd structures via kill-off patterns, thereby precluding interpretations of whether dairying was practiced...
- Effect of paratuberculosis on slaughter weight and slaughter value of dairy cows
A B Kudahl
Faculty of Agricultural Sciences, Department of Animal Health, Welfare and Nutrition, University of Aarhus, Tjele, Denmark
J Dairy Sci 92:4340-6. 2009
..Losses of both slaughter weight and slaughter value caused by MAP were more severe than previously estimated. These losses could be predicted by repeated milk ELISA tests with or without confirmation with fecal culture...
- Impacts of both reference population size and inclusion of a residual polygenic effect on the accuracy of genomic prediction
Christian Albert University, Institute of Animal Breeding and Husbandry, 24908 Kiel, Germany
Genet Sel Evol 43:19. 2011
..The purpose of this work was to study the impact of both the size of genomic reference populations and the inclusion of a residual polygenic effect on dairy cattle genetic evaluations enhanced with genomic information...
- Lameness and claw lesions of the Norwegian red dairy cattle housed in free stalls in relation to environment, parity and stage of lactation
A M Sogstad
Norwegian School of Veterinary Science, P O Box 8146 Dep 0033 Oslo, Norway
Acta Vet Scand 46:203-17. 2005
..As new free stalls are being built, it is important to optimise the conditions for claw health...
- Deterministic models of breeding scheme designs that incorporate genomic selection
J E Pryce
Biosciences Research Division, Department of Primary Industries Victoria, Bundoora, Australia
J Dairy Sci 93:5455-66. 2010
..It is likely that breeding companies will move rapidly to alter their breeding schemes to make use of genomic selection because benefits to the breeding companies and to the industry are considerable...
- Genomic predictions for New Zealand dairy bulls and integration with national genetic evaluation
B L Harris
Livestock Improvement Corp, Hamilton, New Zealand
J Dairy Sci 93:1243-52. 2010
..Finally, the genomically enhanced predictions are filtered through to nongenotyped descendants using a regression procedure...
- Reliabilities of genomic prediction using combined reference data of the Nordic Red dairy cattle populations
R F Brøndum
Aarhus University, Faculty of Science and Technology, Department of Genetics and Biotechnology, Tjele, Denmark
J Dairy Sci 94:4700-7. 2011
..The results from this study show that it is possible to increase the reliability of DGV by combining reference populations from related populations...
- The distribution of Mycobacterium avium ssp. paratuberculosis in the environment surrounding Minnesota dairy farms
E A Raizman
Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, MN 55455, USA
J Dairy Sci 87:2959-66. 2004
..The study results indicate that targeted sampling of cow alleyways and manure storage areas appears to be an alternative strategy for herd screening and Johne's infection status assessment and for estimating herd fecal prevalence...
- Pathogen-dependent induction of cytokines and other soluble inflammatory mediators during intramammary infection of dairy cows
D D Bannerman
Bovine Functional Genomics Laboratory, Beltsville Agricultural Research Center, ARS, USDA, Beltsville, MD 20705, USA
J Anim Sci 87:10-25. 2009
- Reduction of Coxiella burnetii prevalence by vaccination of goats and sheep, The Netherlands
Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
Emerg Infect Dis 17:379-86. 2011
..These effects were most pronounced in animals during their first pregnancy. Results indicate that vaccination may reduce bacterial load in the environment and human exposure to C. burnetii...
- Q Fever in dairy animals
INRA, UR 1282 Infectiologie Animale et Santé Publique, F 37380 Nouzilly
Ann N Y Acad Sci 1166:90-3. 2009
..The number of Coxiella shed in milk is generally low. The phase I vaccine prevented abortion and greatly decreased the shedding of C. burnetii in milk...
- Risk factors for herd breakdown with bovine tuberculosis in 148 cattle herds in the south west of England
A M Ramírez-Villaescusa
Department of Biological Sciences, University of Warwick, Gibbet Hill Rd, Coventry, West Midlands CV4 7AL, England, UK
Prev Vet Med 95:224-30. 2010
..Method of storage or lack of storage of slurry might aid persistence of M. bovis in the environment if M. bovis survives in slurry in some circumstances...
- Selection of single-nucleotide polymorphisms and quality of genotypes used in genomic evaluation of dairy cattle in the United States and Canada
G R Wiggans
Agricultural Research Service, USDA, Beltsville, MD 20705 2350, USA
J Dairy Sci 92:3431-6. 2009
..Genotypes from the Illumina BovineSNP50 BeadChip are of high accuracy and provide the basis for genomic evaluations in the United States and Canada...
- Survival of Escherichia coli O157:H7 in wastewater from dairy lagoons
S V Ravva
USDA, Agriculture Research Service, Western Regional Research Center, Foodborne Contaminants Research Unit, Albany, CA 94710, USA
J Appl Microbiol 101:891-902. 2006
..To determine the survival of Escherichia coli O157:H7 in dairy wastewater from on-site holding lagoons equipped with or without circulating aerators...
- Production effects related to mastitis and mastitis economics in dairy cattle herds
Unit of Animal Health Management, UMR 708 ENVN INRA, National Veterinary School, BP 40706, 44307 Nantes Cedex 03, France
Vet Res 34:475-91. 2003
..To support decision making for udder health control, it is necessary to use a marginal approach, based on the comparison of the losses avoided and the additional costs of modified plans, compared to the existing ones...
- Computing procedures for genetic evaluation including phenotypic, full pedigree, and genomic information
Department of Animal and Dairy Science, University of Georgia, Athens, Georgia 30602, USA
J Dairy Sci 92:4648-55. 2009
..When the information attributable to genomics can be expressed as modifications to the numerator relationship matrix, the proposed methodology may allow the upgrading of an existing evaluation to incorporate the genomic information...
- Assessment of lameness prevalence and associated risk factors in dairy herds in England and Wales
Z E Barker
Division of Farm Animal Science, Department of Clinical Veterinary Science, University of Bristol, Langford, United Kingdom
J Dairy Sci 93:932-41. 2010
..Having a herd consisting entirely of a breed or breeds other than Holstein-Friesian was associated with a reduction in lameness prevalence compared with having a herd consisting entirely of Holstein-Friesians...
- Technical note: adjustment of traditional cow evaluations to improve accuracy of genomic predictions
G R Wiggans
Animal Improvement Programs Laboratory, Agricultural Research Service, USDA, Beltsville, MD 20705 2350, USA
J Dairy Sci 94:6188-93. 2011
..9 percentage points for Jerseys when the predictor population was adjusted. The accuracy of genomic evaluations for Holsteins and Jerseys was increased through better use of information from cows...
- Antibodies to major pasture borne helminth infections in bulk-tank milk samples from organic and nearby conventional dairy herds in south-central Sweden
Department of Biomedicine and Veterinary Public Health, Section for Parasitology SWEPAR, Swedish University of Agricultural Sciences SLU, Ulls väg 2B 7036, SE 750 07 Uppsala, Sweden
Vet Parasitol 171:293-9. 2010
..In general, liver fluke infection was low and it was only diagnosed in 8 (7%) organic and 7 (6%) conventional herds...
- Assessing economic consequences of foot disorders in dairy cattle using a dynamic stochastic simulation model
M R N Bruijnis
Wageningen Institute for Animal Sciences, Department of Animal Sciences, Animals and Society, Wageningen University, PO Box 338, 6700 AH, Wageningen, The Netherlands
J Dairy Sci 93:2419-32. 2010
..Farmer awareness concerning dairy cow foot health and taking action more thoroughly, therefore, could reduce the economic consequences and improve welfare simultaneously...
- Risk factors for postpartum endometritis and the effect of endometritis on reproductive performance in dairy cows in Korea
Ill Hwa Kim
College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
J Reprod Dev 49:485-91. 2003
..6). We conclude that retained placenta, metabolic disorders and cow parity are strongly correlated with the development of postpartum endometritis, which decreases reproductive performance in dairy herds in Korea...
- Genetic parameters for milk urea nitrogen in relation to milk production traits
W M Stoop
Animal Breeding and Genomics Centre, Wageningen University, PO Box 338, 6700 AH Wageningen, The Netherlands
J Dairy Sci 90:1981-6. 2007
..85). Herd-test day explained 58% of the variation in MUN, which suggests that management adjustments at herd-level can reduce MUN. This study shows that it is possible to influence MUN by herd practice and by genetic selection...
- Quantitative trait loci affecting fertility and calving traits in Swedish dairy cattle
Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Box 7023, 75007 Uppsala, Sweden
J Dairy Sci 89:3664-71. 2006
..Some of the results from the cofactor analysis may be false positives and require further validation. In conclusion, we were able to map several QTL affecting fertility and calving traits in Swedish dairy cattle...
- Modelling effectiveness of herd level vaccination against Q fever in dairy cattle
INRA, UMR1300 Bio agression, Epidémiologie et Analyse de Risque, Atlanpole La Chantrerie, BP 40706, 44307 Nantes, France
Vet Res 42:68. 2011
..Our findings shed new light on vaccination effectiveness related to Q fever. Moreover, the model can be further modified for simulating and assessing various Q fever control strategies such as environmental and hygienic measures...
- Seroprevalence and risk factors for Coxiella burnetii (Q fever) seropositivity in dairy goat farmers' households in The Netherlands, 2009-2010
Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
PLoS ONE 7:e42364. 2012
..Finally, vaccination of seronegative farmers and household members could be considered...
- Effect of management practices on paratuberculosis prevalence in Danish dairy herds
S S Nielsen
Department of Large Animal Sciences, University of Copenhagen, Grønnegårdsvej 8, DK 1870 Frederiksberg C, Denmark
J Dairy Sci 94:1849-57. 2011
..Furthermore, decreases in the prevalence of MAP-specific antibodies may not reflect discontinued transmission of MAP in all age groups...
- Production diseases of the transition cow
F J Mulligan
Unit of Herd and Veterinary Public Health, School of Agriculture Food Science and Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland
Vet J 176:3-9. 2008
- Effects of pasture on lameness in dairy cows
Especialidad de Ganadería, Colegio de Postgraduados, Montecillos, Texcoco, Mexico 56230
J Dairy Sci 90:1209-14. 2007
..These results indicate that a period on pasture can be used to help lame cattle recover probably because pasture provides a more comfortable surface upon which cows stand, helping them to recover from hoof and leg injuries...
- Natural antibodies related to metabolic and mammary health in dairy cows
A T M van Knegsel
Adaptation Physiology Group, Wageningen Institute of Animal Sciences, Wageningen University, Wageningen, The Netherlands
Prev Vet Med 103:287-97. 2012
..Future studies should confirm these trends and shed light on the predictive value of N(A)Ab in bovine milk for mammary health...
- Fecal shedding of Campylobacter and Arcobacter spp. in dairy cattle
I V Wesley
Pre Harvest Food Safety and Enteric Diseases Research Unit, National Animal Disease Center, Agricultural Research Service, U S Department of Agriculture, Ames, Iowa 50010, USA
Appl Environ Microbiol 66:1994-2000. 2000
..11) and use of individual waterers (P = 0.19) were protective. This is the first description of Arcobacter spp. in clinically healthy dairy cattle and the first attempt to correlate their presence with C. jejuni...
- Occurrence of antibiotics in hospital, residential, and dairy effluent, municipal wastewater, and the Rio Grande in New Mexico
Kathryn D Brown
University of New Mexico Water Resources Program, University of New Mexico, Albuquerque, NM, USA
Sci Total Environ 366:772-83. 2006
..No antibiotics were detected in the Rio Grande upstream of the Albuquerque WWTP discharge, and only one antibiotic, sulfamethoxazole, was detected in the Rio Grande (300 ng/L) below the WWTP...
- Evaluation of enzyme-linked immunosorbent assay using milk samples as a potential screening test of bovine tuberculosis of dairy cows in Korea
Bo Young Jeon
Department of Microbiology and Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, 120 752 Seoul, Republic of Korea
Res Vet Sci 88:390-3. 2010
..These results suggest that an ELISA, using bulk tank milk samples, might be a potential efficient screening test for bovine TB of dairy cows...
- Validation of a national disease recording system for dairy cattle against veterinary practice records
M Jansson Mörk
Department of Clinical Sciences, Swedish University of Agricultural Sciences, P O Box 7019, SE 750 07 Uppsala, Sweden
Prev Vet Med 93:183-92. 2010
..The random effect of veterinarian accounted for 35% of the modeled variation. Future studies are needed to assess how the differential misclassification affect estimates based on the data, and how to account for it...
- Pleiotropic effects of negative energy balance in the postpartum dairy cow on splenic gene expression: repercussions for innate and adaptive immunity
D G Morris
Teagasc, Mellows Campus, Athenry, County Galway, Ireland
Physiol Genomics 39:28-37. 2009
- Major advances associated with reproduction in dairy cattle
Department of Animal Sciences, University of Florida, Gainesville, 32611 0910, USA
J Dairy Sci 89:1254-66. 2006
- Calf mortality in Norwegian dairy herds
S M Gulliksen
Department of Production Animal Clinical Sciences, Norwegian School of Veterinary Science, Oslo, Norway
J Dairy Sci 92:2782-95. 2009
..5). Bronchopneumonia and enteritis were the most frequent postmortem diagnoses, with proportional rates of 27.7 and 15.4%, respectively...
- Use of female information in dairy cattle genomic breeding programs
N Mc Hugh
Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Moorepark, Fermoy, Co Cork, Ireland
J Dairy Sci 94:4109-18. 2011
- Negative energy balance alters global gene expression and immune responses in the uterus of postpartum dairy cows
D Claire Wathes
Department of Veterinary Basic Sciences, Royal Veterinary College, London, United Kingdom
Physiol Genomics 39:1-13. 2009
..SNEB may therefore prevent cows from mounting an effective immune response to the microbial challenge experienced after calving, prolonging the time required for uterine recovery and compromising subsequent fertility...
- Influence of progesterone concentrations on secretory functions of trophoblast and pituitary during the first trimester of pregnancy in dairy cattle
Laboratory of Endocrinology and Animal Reproduction, Faculty of Veterinary Medicine, University of Liege, B 4000 Liege, Belgium
Theriogenology 67:1503-11. 2007
..Our results suggest the existence of a relationship among the concentration levels of progesterone, PAG, LH, and prolactin during early pregnancy...
- Antimicrobial susceptibility of udder pathogens from cases of acute clinical mastitis in dairy cows
National Veterinary Institute, SE 751 89 Uppsala, Sweden
Vet Microbiol 136:142-9. 2009
..aureus is not uncommon. Penicillin is recommended for treatment of mastitis caused by gram-positive pathogens and regular monitoring of beta-lactamase production in S. aureus is therefore recommended in herds with udder health problems...
- Explaining mastitis incidence in Dutch dairy farming: the influence of farmers' attitudes and behaviour
Department of Communication Science, Wageningen University, Wageningen, The Netherlands
Prev Vet Med 92:210-23. 2009
- Seroprevalence and potential risk of bovine brucellosis in zerograzing and pastoral dairy systems in Uganda
J W Magona
National Livestock Resources Research Institute NaLIRRI, P O Box 96, Tororo, Uganda
Trop Anim Health Prod 41:1765-71. 2009
- Somatotropic axis components and nutrient partitioning in genetically diverse dairy cows managed under different feed allowances in a pasture system
M C Lucy
Department of Animal Sciences, University of Missouri, Columbia 65211, USA
J Dairy Sci 92:526-39. 2009
..Functional components of the somatotropic axis differed for the respective strains and were consistent with strain differences in milk production, BCS, and feed allowance...
- Effect of dietary monensin on the bacterial population structure of dairy cattle colonic contents
Jeffery A McGarvey
Plant Mycotoxin Research Unit, Agricultural Research Service, U S Dept of Agriculture, 800 Buchanan St, Albany, CA 94710, USA
Appl Microbiol Biotechnol 85:1947-52. 2010
..the control dairy cattle, down to the genus level...
- Coagulase-negative staphylococci isolated from bovine extramammary sites and intramammary infections in a single dairy herd
University of Helsinki, Faculty of Veterinary Medicine, Department of Production Animal Medicine, Finland
J Dairy Res 75:422-9. 2008
..simulans, was isolated only from three extramammary samples, indicating that Staph. simulans may be more specifically associated with mastitis. Consequently, the origin of CNS mastitis may vary depending on the causing CNS species...
- High prevalence of scrapie in a dairy goat herd: tissue distribution of disease-associated PrP and effect of PRNP genotype and age
Veterinary Laboratories Agency VLA Lasswade, Pentlands Science Park, Penicuik, Midlothian EH26 0PZ, United Kingdom
Vet Res 40:65. 2009
..The results of this study have implications for surveillance and control policies for scrapie in goats...
- Udder pathogens and their resistance to antimicrobial agents in dairy cows in Estonia
Department of Therapy, Institute of Veterinary Medicine and Animal Science, Estonian University of Life Sciences, Tartu, 51014, Estonia
Acta Vet Scand 53:4. 2011
..The goal of this study was to estimate the distribution of udder pathogens and their antibiotic resistance in Estonia during the years 2007-2009...
- Prevalence and persistence of coagulase-negative Staphylococcus species in three dairy research herds
B E Gillespie
Department of Animal Science, The University of Tennessee, Knoxville, TN 37996, USA
Vet Microbiol 134:65-72. 2009
..Average milk SCC (5.32 log(10)/ml) for cows in which CNS was the only bacteria isolated was significantly higher than the average milk SCC (4.90 log(10)/ml) from cows with quarter milk samples that were bacteriologically negative...
- Aflatoxin binders II: reduction of aflatoxin M1 in milk by sequestering agents of cows consuming aflatoxin in feed
Duarte E Diaz
Department of Animal Science, College of Agriculture and Life Sciences, North Carolina State University, Raleigh, NC 27695 7621, USA
Mycopathologia 157:233-41. 2004
..05% in feed. Potential AFB1 binding agents should be evaluated experimentally to demonstrate efficacy. Our data show that sequestering agents can reduce AFM1 in milk of cows fed AFB1-contaminated feed...
- Detection of spatial and temporal spread of Mycobacterium avium subsp. paratuberculosis in the environment of a cattle farm through bio-aerosols
S W F Eisenberg
Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 7, 3584 CN Utrecht, The Netherlands
Vet Microbiol 143:284-92. 2010
- Spread of Q fever within dairy cattle herds: key parameters inferred using a Bayesian approach
INRA, BP 40706, 44307 Nantes, France
Proc Biol Sci 277:2857-65. 2010
..In addition to the biological insights, these estimates also provide information for calibrating simulation models to assess control strategies for C. burnetii infection...
- Subclinical mastitis in dairy cows in Swiss organic and conventional production systems
Division of Nutrition and Physiology, Institute of Animal Genetics, Nutrition and Housing, Vetsuisse Faculty, University of Bern, CH 3012 Bern, Switzerland
J Dairy Res 74:86-92. 2007
..05) in OP than in CP cows at 31 d and 102 d post partum. In conclusion, under Swiss conditions, subclinical mastitis is a greater problem in organic than in conventional production systems, but differences are not marked...
- Feeding high proportions of barley grain in a total mixed ration perturbs diurnal patterns of plasma metabolites in lactating dairy cows
B N Ametaj
Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
J Dairy Sci 92:1084-91. 2009
..However, further research is warranted to understand involvement of these metabolic changes on the long-term health and productivity of dairy cows...
- Extractable organic components and nutrients in wastewater from dairy lagoons influence the growth and survival of Escherichia coli O157:H7
Subbarao V Ravva
USDA, Agriculture Research Service, Western Regional Research Center, Foodborne Contaminants Research Unit, 800 Buchanan Street, Albany, CA 94710, USA
Appl Environ Microbiol 73:2191-8. 2007
..Although wastewater can potentially provide nutrients to naturally occurring human pathogens, the chemical components, protozoa, and coliphages in wastewater can inhibit the growth of freshly introduced pathogens from manure...
- Inbreeding in Danish dairy cattle breeds
A C Sørensen
Department of Genetics and Biotechnology, Danish Institute of Agricultural Sciences DK 8830 Tjele, Denmark
J Dairy Sci 88:1865-72. 2005
..1%) with a large number of progeny in the reference population. The results of this study indicate the necessity for active management of the rate of inbreeding in the future...
- Multilocus sequence typing of Staphylococcus aureus isolated from high-somatic-cell-count cows and the environment of an organic dairy farm in the United Kingdom
E M Smith
Department of Biological Sciences, University of Warwick, Coventry, UK
J Clin Microbiol 43:4731-6. 2005
..4% of milk samples. Different strains were associated with variable persistence within quarters. MLST is clearly a very suitable tool for the differentiation and analysis of S. aureus populations detected on dairy cattle farms...
- Seroprevalence of Q fever in naturally infected dairy cattle herds
Anne Frieda Taurel
ONIRIS, UMR 1300 Bio Agression, Epidémiologie et Analyse de Risque, Nantes F 44307, France
Prev Vet Med 101:51-7. 2011
..burnetii within an infected herd, as vaccination is effective in susceptible animals and given that nulliparous females are mostly not infected even in infected herds...
- A longitudinal study on morbidity and mortality in youngstock smallholder dairy cattle with special reference to tick borne infections in Tanga region, Tanzania
Emmanuel S Swai
Veterinary Investigation Centre VIC, Box 1068, Arusha, Tanzania
Vet Parasitol 160:34-42. 2009
..Both farmers and extension services should target at risk calves with the provision of both strict tick control and optimal husbandry management practices...
- Multilocus sequence typing of intercontinental bovine Staphylococcus aureus isolates
E M Smith
Department of Biological Sciences, University of Warwick, Coventry, UK
J Clin Microbiol 43:4737-43. 2005
..Some sequence types (STs; ST25, ST115, ST124, and ST126) demonstrated site specificity, as they were significantly (P < 0.05) associated with milk or teat skin...
- A simulation of Johne's disease control
Department of Farm Management, Wageningen University, P O Box 9101, 6700 HB, Wageningen, The Netherlands
Prev Vet Med 54:225-45. 2002
..Validation with data from 21 infected Dutch dairy farms (as well as face-validation: comparison of the results of the JohneSSim model with experiences of Johne's experts) supported the basic assumptions in the model...
- Weighting factors of sire daughter information in international genetic evaluations
W F Fikse
Interbull Centre, Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala
J Dairy Sci 84:1759-67. 2001
- Tuberculosis and brucellosis prevalence survey on dairy cattle in Mbarara milk basin (Uganda)
CIRAD EMVT, Programme Productions Animales, Campus International de Baillarguet, TA 30 A, 34398 Montpellier Cedex, France
Prev Vet Med 67:267-81. 2005
..Tuberculosis reactor prevalences were higher in animals from the agro-pastoral zone. However, the individual-animal and herd prevalences of brucellosis seroprevalences were higher in the pastoral zone...
- Bovine mastitis: an evolving disease
Division of Animal Health and Husbandry, Department of Clinical Veterinary Science, University of Bristol, Langford House, Langford, Bristol, BS40 5DU, UK
Vet J 164:116-28. 2002
..The prospects for novel approaches to mastitis control are discussed, as are the current and future challenges facing the industry...
- [Diarrhea and loss of production on Dutch dairy farms caused by the Schmallenberg virus]
Tijdschr Diergeneeskd 137:112-5. 2012
..Likely the Schmallenbergvirus was the primary cause of the clinical symptoms in the Dutch dairy herds. Further research will be done to confirm this...
- Relationships between rumen lipopolysaccharide and mediators of inflammatory response with milk fat production and efficiency in dairy cows
Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada
J Dairy Sci 92:3800-9. 2009
..Further research is warranted to understand the mechanism(s) by which rumen LPS and inflammatory responses to LPS lower milk fat synthesis and milk energy efficiency and to develop novel strategies for their prevention...
- Bovine tuberculosis of cattle in three districts of northwestern Ethiopia
Bahir Dar Regional Veterinary Laboratory, Bahir Dar, Ethiopia
Trop Anim Health Prod 41:273-7. 2009
..Of the 75 herds tested 41 (54.7%) had BTB infections, 68.9% of the BTB positive herds were in the extensive system and 40% of herds in the intensive systems (small dairy farms) had BTB infections...
- A stochastic model simulating paratuberculosis in a dairy herd
Anne Braad Kudahl
Department of Animal Health, Welfare and Nutrition, Danish Institute of Agricultural Sciences, Foulum, Denmark
Prev Vet Med 78:97-117. 2007
..These links and indirect effects of control strategies thus seem important to include when modeling and predicting effects of PTB control in dairy herds...
- Genotype by environment interaction for fertility, survival, and milk production traits in Australian dairy cattle
Biosciences Research Division, Victorian AgriBiosciences Centre, La Trobe University, Bundoora, Victoria 3086, Australia
J Dairy Sci 91:4840-53. 2008
..However, these estimates had large standard errors. Regardless of the environmental descriptor used, there was no evidence for the presence of a large G x E that resulted in economically significant reranking of bulls...
- Distribution and antimicrobial resistance of clinical and subclinical mastitis pathogens in dairy cows in Rhône-Alpes, France
Marie Anne Botrel
Agence Francaise de Securite Sanitaire des Aliments, Lyon, France
Foodborne Pathog Dis 7:479-87. 2010
..However, it also confirms the fact that attention must be maintained to avoid any emergence of such resistant bacteria...
- Association between bovine-leukosis virus seroprevalence and herd-level productivity on US dairy farms
S L Ott
USDA, Centers for Epidemiology and Animal Health, 2150 Centre Avenue, Building B, Mail Stop 2E5, Fort Collins, CO 80526 8117, USA
Prev Vet Med 61:249-62. 2003
..Most of this $525 million industry loss was due to reduced milk production in test-positive herds...
- Diagnosing intramammary infections: evaluation of definitions based on a single milk sample
I R Dohoo
Centre for Veterinary Epidemiological Research, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island, Canada C1A 4P3
J Dairy Sci 94:250-61. 2011
..For "any organism," using definition B raised the Sp to 88 and 93% in the 2 data sets, respectively. The final choice of definition will depend on the objectives of study or control program for which the sample was collected...
- Estimation of diagnostic test characteristics and prevalence of Giardia duodenalis in dairy calves in Belgium using a Bayesian approach
Laboratory of Parasitology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B 9820 Merelbeke, Belgium
Int J Parasitol 34:1121-7. 2004
..This is the first known study to use Bayesian analysis to estimate the prevalence of G. duodenalis in the faeces of dairy calves and to estimate test characteristics of diagnostic assays used for the detection of G. duodenalis...
- A mathematical model of Staphylococcus aureus control in dairy herds
R N Zadoks
Department of Farm Animal Health, Ruminant Health Unit, Faculty of Veterinary Medicine, Utrecht University, The Netherlands
Epidemiol Infect 129:397-416. 2002
..aureus prevalence. For one herd, the model failed to mimic field observations. Explanations for the discrepancy are given in a discussion of current knowledge and model assumptions...
- Milk culture results in a large Norwegian survey--effects of season, parity, days in milk, resistance, and clustering
Department of Norwegian Cattle Health Services, TINE Norwegian Dairies BA, As, Norway
J Dairy Sci 89:1010-23. 2006
..aureus was likely due to higher prevalence of Staph. aureus as a whole, but for CNS, there was also an additional increase caused by a higher proportional rate of penicillin resistance during the late indoor season...
- Bacterial population dynamics in dairy waste during aerobic and anaerobic treatment and subsequent storage
Jeffery A McGarvey
Foodborne Contaminants Research Unit, U S Department of Agriculture, Agricultural Research Service, Albany, CA 94710, USA
Appl Environ Microbiol 73:193-202. 2007
..Anaerobic treatment resulted in fewer alterations, but significant decreases in the phyla Actinobacteria and Bacteroidetes, and increases in the phyla Planctomycetes, Spirochetes, and TM7 were observed...
- Voluntary waiting period management practices in dairy herds participating in a progeny test program
J M DeJarnette
Select Sires, Inc, Plain City, OH 43064, USA
J Dairy Sci 90:1073-9. 2007
..Opportunities to improve the accuracy of daughter pregnancy rate estimates may reside in models that adjust for VWP management decisions on a within-herd basis...
- Claw trimming routines in relation to claw lesions, claw shape and lameness in Norwegian dairy herds housed in tie stalls and free stalls
Norwegian School of Veterinary Science, P O Box 8146, Dep 0033 Oslo, Norway
Prev Vet Med 73:255-71. 2006
..The routine claw trimming performed in Norwegian free stalls has not had the desired effects on claw lesions and abnormal claw shapes. Routine trimming in tie stalls, however, seems to have prevented claw disorders...
- Epidemiology of Cryptosporidium spp. and Giardia duodenalis on a dairy farm
R E Huetink
Department of Parasitology and Tropical Veterinary Medicine, Faculty of Veterinary Medicine, University of Utrecht, P.O. Box 80.165, 3508 TD, Utrecht, The Netherlands
Vet Parasitol 102:53-67. 2001
..The results indicate that cow-to-calf and indirect calf-to-calf transmission both are important routes for acquiring infection with Cryptosporidium spp...
- Baseline survey of health prophylaxis and management practices on Swiss dairy farms
Veterinary Public Health Institute, University of Bern, Switzerland
Schweiz Arch Tierheilkd 154:371-9. 2012
..The data collected in this survey could assist in improving future dairy health communication campaigns in Switzerland...
- A survey on Dictyocaulus viviparus antibodies in bulk milk of dairy herds in Northern Germany
Anne Marie Klewer
Institute for Parasitology, University of Veterinary Medicine Hannover, Hannover, Germany
Prev Vet Med 103:243-5. 2012
..3%) at two, and 4 (0.5%) on all three sampling dates. The majority of the farms represented in the study belonged to four districts of East Frisia, which showed no significant difference in the proportion of positive dairy farms...
- The perception of veterinary herd health management by Dutch dairy farmers and its current status in the Netherlands: a survey
Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 7, 3584 CL, Utrecht, The Netherlands
Prev Vet Med 104:207-15. 2012
..Satisfaction with the way VHHM was executed on the farm had no significant influence on 305-day production. There was, however, some influence on calving interval and bulk milk somatic cell count (BMSCC)...
- Detection of quantitative trait loci affecting non-return rate in French dairy cattle
S Ben Jemaa
INRA, UR339 Laboratoire de Génétique Biochimique et Cytogénétique, Jouy en Josas, France
J Anim Breed Genet 125:280-8. 2008
..Estimated QTL variance was 18%, 14%, 11.5% and 14% of the total genetic variance, respectively, for QTL mapping to BTA01, BTA02 (NRR90 and NRR56) and BTA03...
- Opinions and practices of veterinarians and dairy farmers towards herd health management in the UK
St David s Farm Practice, Exmouth, Devon, EX8 5AN, UK
Vet Rec 170:441. 2012
..The study underlines that 'demonstrating cost-effectiveness' is still a main concern for veterinarians and farmers and identifies areas that can be improved by more training and effective communication...
- The use of Markov chain Monte Carlo for analysis of correlated binary data: patterns of somatic cells in milk and the risk of clinical mastitis in dairy cows
M J Green
Ecology and Epidemiology Group, Department of Biological Sciences, University of Warwick, Coventry CV4 7AL, UK
Prev Vet Med 64:157-74. 2004
..MCMC proved a useful tool for estimating parameters in a hierarchical Bernoulli model. Model construction and an approach to assessing goodness of model fit are described...