- 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
- 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...
- 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...
- 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...
- 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...
- 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 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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
- 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...
- 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...
- 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
- 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...
- 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
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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
- 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...
- 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...
- 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
- 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...
- 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
- 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...
- 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...
- 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...
- 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...
- 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
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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...
- 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 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...
- 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...
- 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...
- Analysis of reproductive performance of lactating cows on large dairy farms using machine learning algorithms
D Z Caraviello
Department of Dairy Science, University of Wisconsin, Madison, WI 53706, USA
J Dairy Sci 89:4703-22. 2006
- Relationship between antimicrobial drug usage and antimicrobial susceptibility of gram-positive mastitis pathogens
Department of Dairy Science, University of Wisconsin, Madison 53706, USA
J Dairy Sci 90:262-73. 2007
- 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
- Factors affecting conception rates following artificial insemination or embryo transfer in lactating Holstein cows
D G B Demetrio
Departamento de Produção Animal, FMVZ, UNESP, Botucatu, Sao Paulo, Brazil
J Dairy Sci 90:5073-82. 2007
..The superiority of ET vs. AI is more evident in high-producing cows. High BT measured on d 7 had a negative effect on CR and embryonic retention...
- Enhanced erythrocytic lipid peroxides and reduced plasma ascorbic acid, and alteration in blood trace elements level in dairy cows with mastitis
Preventive Medicine Laboratory, Division of Medicine, Indian Veterinary Research Institute, Izatnagar 243122, UP, India
Vet Res Commun 29:27-34. 2005
..It was concluded that the blood antioxidant status declines in inflammatory udder conditions, suggesting that incorporation of antioxidants may help in better management of mastitis in dairy cows...
- Phlorizin administration increases hepatic gluconeogenic enzyme mRNA abundance but not feed intake in late-lactation dairy cows
Barry J Bradford
Department of Animal Science, Michigan State University, East Lansing, MI 48824, USA
J Nutr 135:2206-11. 2005
..05). Late-lactation dairy cows adapted quickly to an increase in peripheral glucose demand; adaptation mechanisms likely included enhanced gluconeogenic capacity, whereas DMI was not altered...
- Use of herd solutions from a random regression test-day model for diagnostic dairy herd management
MTT Agrifood Research Finland, Biotechnology and Food Research, Biometrical Genetics, Jokioinen, Finland
J Dairy Sci 90:2563-8. 2007
..The Web service has been offered to farmers and dairy advisors since 2001, and it has proved to be a powerful tool for herd monitoring and planning...
- 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...
- Shifts in bacterial community composition in the rumen of lactating dairy cows under milk fat-depressing conditions
P J Weimer
USDA ARS, US Dairy Forage Research Center, Madison, WI 53706, USA
J Dairy Sci 93:265-78. 2010
..Overall, this study demonstrates an association between MFD and wholesale shifts of microbial communities in the rumen...
- Detection of quantitative trait loci influencing dairy traits using a model for longitudinal data
S L Rodriguez-Zas
J Dairy Sci 85:2681-91. 2002
..Identified positions can be incorporated into marker-assisted selection decisions to alter the persistency and peak production or the fluctuation of SCS during a lactation...
- An overview of various technologies for the treatment of dairy wastewaters
Jai Prakash Kushwaha
Department of Chemical Engineering, Indian Institute of Technology, Uttarakhand, India
Crit Rev Food Sci Nutr 51:442-52. 2011
..In this article, the various recent advancements in the treatment of dairy wastewater have been discussed and the areas where further research is needed have been identified...
- Severity of E. coli mastitis is mainly determined by cow factors
Mammary gland and Mastitis Research Centre, Department of Physiology, Biochemistry and Biometrics, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
Vet Res 34:521-64. 2003
..coli, connection between endotoxins, tumor necrosis factor-alpha and nitric oxide, severity classification of E. coli mastitis, lifespan of neutrophils, host factors that influence severity, tissue damage and production loss...
- 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...
- Characterization of French dairy farm environments from herd-test-day profiles
INRA, UMR1313 Genetique Animale et Biologie Integrative, 78352 Jouy en Josas, France
J Dairy Sci 95:4085-98. 2012
..The use of clusters based on HTD profiles as descriptors of distinct herd management systems will be used in a genotype by environment interaction study in France...
- Bacterial communities in aerosols and manure samples from two different dairies in central and Sonoma valleys of California
Subbarao V Ravva
Produce Safety and Microbiology Research Unit, Western Regional Research Center, Agriculture Research Service, United States Department of Agriculture, Albany, California, United States of America
PLoS ONE 6:e17281. 2011
..Large volumes of aerosols would be required to determine if bacterial sequences from aerosols could be used to track bacteria in manure to crops grown in proximity...
- Appropriate preservation of dairy wastewater samples for environmental analysis
April L Ulery
New Mexico State University, Department of Agronomy and Horticulture, Las Cruces, New Mexico, USA
Environ Monit Assess 95:117-24. 2004
..4 mL sulfuric acid be added for every 100 mL dairy wastewater sample to ensure adequate acidification. This quantity is twice the amount currently recommended in U.S. Environmental Protection Agency guidelines...
- Completeness of metabolic disease recordings in Nordic national databases for dairy cows
M N Espetvedt
Norwegian School of Veterinary Science, Department of Production Animal Clinical Science, P O Box 8146 Dep, NO 0033 Oslo, Norway
Prev Vet Med 105:25-37. 2012
..Further standardisation of disease registrations is necessary for valid between-country assessments...
- Genotype by environment interaction for production traits while accounting for heteroscedasticity
A G Fahey
Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
J Dairy Sci 90:3889-99. 2007
..21, estimated standard error = 0.22) for the lowest quartile. Reducing HV did not affect estimates of heritabilities or genetic correlations. Results indicated that modest evidence for existence of GxE did not arise solely from HV...
- An outbreak of Streptococcus canis mastitis in a dairy herd in Israel
National Mastitis Reference Centre, Kimron Veterinary Institute, POB 12, Bet Dagan, 50250, Israel
N Z Vet J 53:261-4. 2005
..An increase in the bulk somatic cell count (BSCC) of up to 1,000 x 103 cells/ml occurred in a dairy herd in Israel at the end of 2001 and beginning of 2002...
- The dynamics of Staphylococcus aureus intramammary infection in nine Danish dairy herds
H D Larsen
Danish Veterinary Laboratory, Copenhagen V, Denmark
Vet Microbiol 71:89-101. 2000
..The results support the hypothesis that some S. aureus mastitis strains are more contagious, virulent or persistent than others. The human reservoir of S. aureus does not play a major role as a source of bovine intramammary infections...
- Efficacy of Solis, NovasilPlus, and MTB-100 to reduce aflatoxin M1 levels in milk of early to mid lactation dairy cows fed aflatoxin B1
R E Kutz
University of Missouri, Columbia, Missouri 65211, USA
J Dairy Sci 92:3959-63. 2009
..52%). Results indicated that SO and NOV at 0.56% of the diet were effective in reducing milk AFM(1) concentrations in cows consuming a total mixed ration containing 112 microg of AFB(1)/kg of diet DM...
- Cow, farm, and management factors during the dry period that determine the rate of clinical mastitis after calving
M J Green
School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington, LE12 5RD, United Kingdom
J Dairy Sci 90:3764-76. 2007
..The research indicates that specific dry-period management strategies have an important influence on the rate of clinical mastitis during the next lactation...
- Awareness and perceived value of economic information in controlling somatic cell count
M A P M van Asseldonk
Institute for Risk Management in Agriculture and Agricultural Economics Research Institute, Wageningen University and Research Centre, PO Box 8130, 6706 KN Wageningen, The Netherlands
Vet Rec 166:263-7. 2010
..Actions were rationalised in a specific context comprising the intertwined notions of intentions and efficacy beliefs...
- Management strategies to decrease the prevalence of mastitis caused by one strain of Staphylococcus aureus in a dairy herd
J R Middleton
Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman 99164-70601, USA
J Am Vet Med Assoc 218:1615-8, 1581-2. 2001
..One year after implementation of these control measures, incidence of IMI caused by S aureus was 0.35 infections/100 cow months, and prevalence had decreased from 20 to 8%...
- A stochastic model simulating the feeding-health-production complex in a dairy herd
Royal Veterinary and Agricultural University, Department of Animal Science and Animal Health, Copenhagen, Denmark
J Dairy Sci 83:721-33. 2000
- Distribution of coagulase-negative Staphylococcus species from milk and environment of dairy cows differs between herds
Institute for Agricultural and Fisheries Research ILVO, Technology and Food Science Unit, 9090 Melle, Belgium
J Dairy Sci 94:2933-44. 2011
..For S. haemolyticus and S. simulans, the environment was found as a reservoir, suggesting that IMI with these species were possibly environmental in origin...
- (GTG)5-PCR fingerprinting for the classification and identification of coagulase-negative Staphylococcus species from bovine milk and teat apices: a comparison of type strains and field isolates
Research Group of Industrial Microbiology and Food Biotechnology IMDO, Faculty of Sciences and Bio engineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, B 1050 Brussels, Belgium
Vet Microbiol 147:67-74. 2011
..The study shows the usefulness of the method to determine the identity of bovine Staphylococcus species, provided an identification framework updated with field isolates is available...
- Short communication: Patterns of fecal shedding of Klebsiella by dairy cows
M A Munoz
Quality Milk Production Services, Cornell University, Ithaca, NY 14850 1263, USA
J Dairy Sci 90:1220-4. 2007
..Results from each method suggest that fecal shedding of Klebsiella is associated with transient rather than persistent presence of the organism in the gastrointestinal tract...
- Mouse lung inflammation after instillation of particulate matter collected from a working dairy barn
Teresa C Wegesser
Pulmonary and Critical Care Medicine, University of California, Davis, Genome and Biomedical Sciences Facility, Davis, CA 95616, USA
Toxicol Appl Pharmacol 236:348-57. 2009
..5-10); however, in contrast with PM(2.5-10) isolated from ambient air in the Central Valley of California, the active components in the insoluble fraction were heat-labile...
- A mixed methods inquiry: How dairy farmers perceive the value(s) of their involvement in an intensive dairy herd health management program
StrateKo Aps, Gartnervaenget, Denmark
Acta Vet Scand 50:50. 2008
- Technical note: use of transfer RNA-intergenic spacer PCR combined with capillary electrophoresis to identify coagulase-negative Staphylococcus species originating from bovine milk and teat apices
Department of Reproduction, Obstetrics, and Herd Health, Faculty of Veterinary Medicine, Ghent University, Belgium
J Dairy Sci 92:3204-10. 2009
- The interaction of strain of Holstein-Friesian cows and pasture-based feed systems on milk yield, body weight, and body condition score
Dairy Production Department, Teagasc, Dairy Production Research Centre Moorepark, Fermoy, Co Cork, Ireland
J Dairy Sci 88:1231-43. 2005
..00 kg of milk/kg of concentrate for high durability) than the New Zealand strain (0.55 kg of milk/kg of concentrate). The results indicate that the optimum strain of HF will vary with feed system...
- Voluntary waiting period and adoption of synchronized breeding in dairy herd improvement herds
R H Miller
Animal Improvement Programs Laboratory, Agricultural Research Service, USDA, Beltsville, MD 20705 2350, USA
J Dairy Sci 90:1594-606. 2007
..9% of herd-years (34.9% of cows) for 2005. Procedures for genetic evaluation of daughter pregnancy rate should be examined to determine if herd regimen for reproductive management affects results...
- Distribution of superantigenic toxin genes in Staphylococcus aureus isolates from milk samples of bovine subclinical mastitis cases in two major diary production regions of China
Shao Chen Wang
National Center for Veterinary Drug Safety Evaluation, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People s Republic of China
Vet Microbiol 137:276-81. 2009
..However, some gene combinations suggest the possibility of the existence of variants or new types of MGEs...
- Differential gene expression of high and low immune responder Canadian Holstein dairy cows
M I Nino-Soto
Department of Pathobiology, Ontario Veterinary College, Canada
Dev Biol (Basel) 132:315-20. 2008
..These results can aid in the establishmentof selection programmes based on broad-based disease resistance, aimed at improving general health in cattle herds...
- Pasture-based dairying: challenges and rewards for New Zealand producers
Dexcel, Private Bag 3221, Hamilton, New Zealand
Theriogenology 59:553-61. 2003
New Zealand dairying farm systems are principally pasture-based or seasonal supply. Features of these systems and their management are described, together with their advantages and limitations...
- Ambient and indoor particulate aerosols generated by dairies in the southern High Plains
C W Purdy
USDA, Agricultural Research Service, Conservation and Production Research Laboratory, PO Drawer 10, Bushland, TX 79012, USA
J Dairy Sci 92:6033-45. 2009
..6.0 +/- 5.8 microg/m(3); PM(2.5) = 21.0 +/- 2.1 microg/m(3)). Personnel should be protected from high aerosol concentrations found at the commodity barn, compost field, and milking parlor during the winter...
- Ribotyping of Streptococcus uberis from a dairy's environment, bovine feces and milk
Ruth N Zadoks
Department of Food Science, Cornell University, Ithaca, NY 14853, USA Quality Milk Production Services, 22 Thornwood Drive, Cornell University, Ithaca, NY 14850 1263, USA
Vet Microbiol 109:257-65. 2005
..S. uberis was common in farm soil (31 of 35 samples) but not in non-farm soil (0 of 11 samples). We hypothesize that fecal shedding of S. uberis may play a role in maintenance of S. uberis populations in the dairy ecosystem...
- 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...
- National intervention study of mastitis control in dairy herds in England and Wales
M J Green
School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Sutton Bonington LE12 5RD, UK
Vet Rec 160:287-93. 2007
..There were also significant reductions of approximately 20 per cent in the incidence of clinical mastitis and in the occurrence of increases in the somatic cell counts of individual cows from below, to above 200,000 cells/ml...