6,986 results match your criteria dairy farms

Prevalence and Antimicrobial Susceptibility Profile of in Milk and Traditionally Processed Dairy Products in Addis Ababa, Ethiopia.

Biomed Res Int 2021 16;2021:5576873. Epub 2021 Jul 16.

Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia.

is a contagious pathogen that can cause various diseases in both humans and animals. Antimicrobial-resistant is becoming an extremely important global health problem. A cross-sectional study was conducted from December 2019 to May 2020 to assess the occurrence of and its antimicrobial susceptibility profiles in milk and traditionally processed dairy products in selected subcities of Addis Ababa. Read More

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Predictive models to identify Holstein cows at risk of metritis and clinical cure and reproductive/productive failure following antimicrobial treatment.

Prev Vet Med 2021 Jul 13;194:105431. Epub 2021 Jul 13.

Department of Large Animal Clinical Sciences, University of Florida, Gainesville, 32610, USA; Department of Animal Sciences, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, 32610, USA. Electronic address:

Precision dairy farming, specifically the design of management strategies according to the animal's needs, may soon become the norm since automated technologies that generate large amounts of data for each individual are becoming more affordable. Our objectives were to determine whether the use of behavioral changes could improve the accuracy of prediction of the risk of metritis and the risk of clinical cure of cows diagnosed with metritis. Addition of behavioral data to the algorithms to predict the outcomes of interest increased their accuracy by 7 to 32%. Read More

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Dairy management practices associated with multi-drug resistant fecal commensals and in cull cows: a machine learning approach.

PeerJ 2021 16;9:e11732. Epub 2021 Jul 16.

Veterinary Medicine Teaching and Research Center, University of California, Davis, Tulare, CA, The United States of America.

Background: Understanding the effects of herd management practices on the prevalence of multidrug-resistant pathogenic and commensals spp. in dairy cattle is key in reducing antibacterial resistant infections in humans originating from food animals. Our objective was to explore the herd and cow level features associated with the multi-drug resistant, and resistance phenotypes shared between , and spp. Read More

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Sensitivity of cultures of different biological origin to commercial bacteriophages and phages of var.

Vet World 2021 Jun 19;14(6):1588-1593. Epub 2021 Jun 19.

Research Station of the Institute of Veterinary Medicine of NAAS, Ternopil, Ukraine.

Background And Aim: Mastitis, an inflammation of the mammary gland, is an ongoing problem in dairy herds. In this study, we determined the sensitivity of cultures of different biological origins to commercial bacteriophages and phages of var which were isolated on dairy farms, to create a drug for the treatment of mastitis in cows.

Materials And Methods: We used cultures of isolated from different habitats, and other types of staphylococci isolated on dairy farms. Read More

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Effectiveness of dry cow therapy and/or internal teat sealant on existing infections in smallholder dairy farms in Kenya.

Vet World 2021 Jun 4;14(6):1430-1436. Epub 2021 Jun 4.

Department of Health Management, University of Prince Edward Island, Canada.

Background And Aim: Dry cow therapy (DCT) can be an effective treatment of mastitis that has not responded to conventional treatment during lactation. The aim of this study was to establish the effectiveness of DCT options available in reducing intramammary infections in smallholder dairy farms in Kiambu County, Kenya.

Materials And Methods: The study targeted smallholder dairy farms which were registered at the local dairy cooperatives and which had cows that were at the point of dry-off. Read More

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Understanding the dairy production systems in rural settlements in the Brazilian semi-arid region: characterization, typology, and holistic perception.

Trop Anim Health Prod 2021 Jul 27;53(4):417. Epub 2021 Jul 27.

Department of Animal Science, State University of Acaraú Valley (UVA), Sobral, CE, Brazil.

The objective of this study was to characterize and typify dairy farms and to evaluate society's perception of dairy production in rural settlements in the Brazilian semi-arid region. A questionnaire containing questions related to socioeconomic, livestock, physical, herd management, and production indicators was applied to 17 milk farmers for typological analysis. A second questionnaire was subsequently applied to the same 17 farmers for the holistic perception of dairy farming in rural settlements, in addition to 47 technicians in the area of animal science and 140 laypeople. Read More

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Evaluation of the pour-on administration of eprinomectin on milk yield and somatic cell counts in dairy ewes naturally infected with gastrointestinal nematodes.

Vet Parasitol 2019 10;276S:100016. Epub 2019 Jun 10.

Laboratory of Parasitology and Parasitic Diseases, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece. Electronic address:

The effect of pour-on eprinomectin administration on milk yield and somatic cell counts was studied in dairy ewes located on twelve farms in mainland Greece. On each farm, the selected ewes were randomly divided into three similar groups. Group 1 consisted of 10-15 untreated ewes (control group), Group 2 consisted of 10-13 ewes treated with a single dose of eprinomectin at Day 0 and Group 3 consisted of 6 ewes repeatedly treated with eprinomectin at Days 0, 42 and 70. Read More

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Novel Streptococcus uberis sequence types causing bovine subclinical mastitis in Hainan, China.

J Appl Microbiol 2021 Jul 26. Epub 2021 Jul 26.

Department of Pharmacy, Beijing Shijitan Hospital, Beijing, 100038, China.

Aim: To determine the molecular epidemiology, genotypes, and phenotypes of the major species of Streptococcus associated with bovine subclinical mastitis in Hainan, China.

Methods And Results: In total, 150 subclinical mastitis milk samples were collected from two large dairy farms in Hainan. On the basis of biochemical tests and 16S rDNA sequencing, 39 samples were Streptococcus positive and the most frequently isolated species was Streptococcus uberis (n=29, 74. Read More

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Role of insulin, insulin sensitivity, and abomasal functions monitors in evaluation of the therapeutic regimen in ketotic dairy cattle using combination therapy with referring to milk yield rates.

Open Vet J 2021 Apr-Jun;11(2):228-237. Epub 2021 Apr 30.

Division of Internal Medicine, Department of Animal Medicine, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt.

Background: Ketosis is one of the most critical metabolic disorders that occur in dairy cows after parturition due to negative energy balance around calving.

Aim: The study evaluated a specific therapeutic regimen of ketosis in Holstein dairy cattle by using the combination therapy including hormones, corticosteroids, propylene glycol, and vitamin B12 as well as the use of milk yield rates, insulin, insulin sensitivity, and abomasal functions monitors as diagnostic biomarkers for the recovery of ketotic cows either pre-therapy (0 days) or post-therapy (7 and 14 days).

Methods: This study was conducted on ketotic cattle ( = 20) belonged to different dairy farms in Cairo and Giza governorates, Egypt. Read More

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Standing behavior and sole horn lesions: A prospective observational longitudinal study.

J Dairy Sci 2021 Jul 22. Epub 2021 Jul 22.

Animal Welfare Program, Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC V6T 1Z4, Canada. Electronic address:

Studies performed on individual research farms have reported that dairy cattle developing sole hemorrhages or sole ulcers in peak to mid lactation spent more time standing during the weeks around calving. The aim of this prospective observational longitudinal study was to evaluate whether this relationship is evident in commercial dairy herds. A convenience sample of 8 herds were visited every other week, and animals without previous severe horn lesions and deemed sound at 4 to 8 wk before calving were enrolled. Read More

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Reproductive hormone use and its association with herd-level factors on Dutch dairy farms.

J Dairy Sci 2021 Jul 22. Epub 2021 Jul 22.

Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, 3584 CL, Utrecht, the Netherlands; University Farm Animal Practice (ULP), 3481 LZ, Harmelen, the Netherlands. Electronic address:

We studied the use of the 3 commonly used reproductive hormones, namely prostaglandins, GnRH, and progesterone, and associated herd-level factors on 760 Dutch dairy farms from 5 veterinary clinics. From 2017 to 2019 we collected data on the sales of reproductive hormones, converted this data into the number of reproductive hormone doses conducted, and expressed this as the annual number of reproductive hormone doses per 100 adult dairy cows. Additional herd-level information was available for 2019. Read More

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Seasonal and agro-ecological associations with feed resource use and milk production of ranging dairy cows in the Southern Ethiopian Rift Valley.

Trop Anim Health Prod 2021 Jul 25;53(4):411. Epub 2021 Jul 25.

Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Heidestraat 19, B-9820, Merelbeke, Belgium.

Inadequate feed quality and quantity are the major constraints to dairy cow productivity in the southern Ethiopian Rift Valley. Dairy cows thrives predominantly on high-fibre feeds, with a reduced capacity for microbial fermentation in the rumen. Although variations in free-ranging dairy cow rations of the Ethiopian Rift Valley are assumed to depend on season and altitude alias agro-ecological zone, their potential impact on milk production is undocumented. Read More

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Why isn't the transition period getting the attention it deserves? Farm advisors' opinions and experiences of managing dairy cow health in the transition period.

Prev Vet Med 2021 Jul 6;194:105424. Epub 2021 Jul 6.

Department of Veterinary Health and Animal Sciences, Harper Adams University, Newport, Shropshire, TF10 8NB, UK.

During the transition period three weeks before and after calving the dairy cow is at greater risk of developing disease, to the detriment of welfare and production. An understanding of the reasons why and how farmers and their advisors engage in efforts to control metabolic disease during the transition period is required if these diseases are to be more successfully controlled. The study reported here, based on interview research, investigates the opinions and behaviours of farm advisors on transition cow management and nutrition, their experiences of working with their respective farm clients, and interactions with other farm advisors to help manage transition cow health and productivity. Read More

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Prevalence of failure of passive transfer of immunity in dairy calves in a Mediterranean pasture-based production system of the south-west region of Western Australia.

Res Vet Sci 2021 Jul 16;139:121-126. Epub 2021 Jul 16.

School of Veterinary Medicine, College of Science, Health, Engineering and Education, Murdoch University, 90 South Street, Murdoch 6150, WA, Australia; Hubei International Scientific and Technological Cooperation Base of Veterinary Epidemiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China.

The objective of this study was to estimate the prevalence of failure of passive transfer of immunity (FPTI) in dairy calves in the south-west region of Western Australia herds. A cross-sectional study was conducted in 26/140 dairy farms and serum samples were collected from 495 healthy 2-7 day-old calves. A radial immunodiffusion (RID) test was used to determine the concentration of serum IgG and calves were classified as having FPTI if the IgG concentration was less than 10 mg/mL. Read More

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Prevalence of antibodies to in cattle and buffaloes of different organized herds in India.

J Parasit Dis 2021 Jun 12;45(2):359-365. Epub 2020 Nov 12.

National Dairy Development Board, Anand, Gujarat 388001 India.

Bovine anaplasmosis is one of the most important tick borne disease in ruminants causing huge economic loss to the dairy industry. A cross-sectional study was carried out to detect serum antibodies to infection in cattle and buffaloes housed in 14 organized herds located at various climatic zones spreading over 9 different states in India. A total of 911 serum samples, collected from 667 cattle and 244 buffaloes, were subjected to a competitive enzyme linked immune-sorbent assay detecting an epitope of major surface protein 5 (MSP5) of . Read More

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Effects of soybean meal supplementation on ruminal kinetics of feed particle size reduction and passage in dairy cows fed rice straw.

Anim Sci J 2021 Dec;92(1):e13590

Laboratory of Animal Production System, Graduate School of Agriculture, Hokkaido University, Sapporo, Japan.

Six ruminal-cannulated nonlactating Holstein Friesian cows (mean body weight:660 ± 42.9 kg) were used to investigate the effect of soybean meal (SBM) supplementation on voluntary rice straw (RS) intake, feed particle size reduction, and passage kinetics in the rumen. They were allocated to two dietary treatments: RS alone or RS supplemented with SBM. Read More

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December 2021

Angelica polysaccharide attenuates LPS-induced inflammation response of primary dairy cow claw dermal cells via NF-κB and MAPK signaling pathways.

BMC Vet Res 2021 Jul 19;17(1):248. Epub 2021 Jul 19.

College of Veterinary Medicine, Hebei Agricultural University, 2596 Lekai South Street, Hebei, 071001, Baoding, China.

Background: Laminitis, an inflammation of the claw laminae, is one of the major causes of bovine lameness, which can lead to enormous economic losses and animal welfare problems in dairy farms. Angelica polysaccharide (AP) is proved to possess anti-inflammatory properties. But the role of AP on inflammatory response of the claw dermal cells has not been reported. Read More

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Commercial beef farms excelling in terminal and maternal genetic merit generate more gross profit.

Transl Anim Sci 2021 Jul 9;5(3):txab101. Epub 2021 Jun 9.

Animal and Grassland Research and Innovation Centre, Teagasc, Moorepark, Fermoy, County Cork, Ireland.

Validation of beef total merit breeding indexes for improving performance and profitability has previously been undertaken at the individual animal level; however, no herd-level validation of beef genetic merit and profit has been previously investigated. The objective of the present study was to quantify the relationship between herd profitability and both herd-average terminal and maternal genetic merit across 1,311 commercial Irish beef herds. Herd-level physical and financial performance data were available from a financial benchmarking tool used by Irish farmers and their extension advisors. Read More

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Review of Infections With Bovine Herpesvirus 1 in Slovenia.

Front Vet Sci 2021 1;8:676549. Epub 2021 Jul 1.

Institute for Microbiology and Parasitology-Virology Unit, Veterinary Faculty, University of Ljubljana, Ljubljana, Slovenia.

In the 1950s, infectious bovine rhinotracheitis/infectious pustular vulvovaginitis (IBR/IPV) disease was clinically detected and documented in cattle for the first time in Slovenia. The bovine herpes virus 1 (BoHV-1) was confirmed several times from infected herds by virus isolation on cell cultures. To keep the IC virus-free, high biosecurity measures were introduced. Read More

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Asymptomatic Carriage of Type D/C in Broiler Flocks as the Source of Contamination of a Massive Botulism Outbreak on a Dairy Cattle Farm.

Front Microbiol 2021 29;12:679377. Epub 2021 Jun 29.

ANSES, French Agency for Food, Environmental and Occupational Health Safety, Hygiene and Quality of Poultry and Pig Products Unit, Ploufragan, France.

In winter 2018, a massive type D/C cattle botulism outbreak occurred on a mixed dairy and broiler farm in France. An investigation was conducted based on the hypothesis of asymptomatic carriage in poultry. We set out to identify the source of contamination of the dairy cattle and to monitor the contamination of broilers over time, including the hatchery delivering chicks to the farm. Read More

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Feed-out rate used as a tool to manage the aerobic deterioration of corn silages in tropical and temperate climates.

J Dairy Sci 2021 Jul 15. Epub 2021 Jul 15.

Department of Agricultural, Forest, and Food Sciences (DISAFA), University of Turin, 10095 Grugliasco, Italy. Electronic address:

There is an increasing recognition throughout the world that many of the feeding problems of dairy herds are linked to the presence of aerobically deteriorated parts on a silo face, causing farmers to pose questions on what amount of silage should be removed daily to feed their animals. Since an adequate feed-out rate helps to prevent silage spoilage, a simple tool is needed to manage the aerobic deterioration of corn silages during feed-out. The aims of this study were to develop an unloading rate index, which we have called the mass feed-out rate (MFR), expressed in kilograms of fresh matter silage unloaded daily per square meter of silo face, to better predict the aerobic deterioration of silage and to offer management solutions to help prevent spoilage, through a survey on 97 commercial dairy farms in Italy and Brazil. Read More

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Including milk production, conformation, and functional traits in multivariate models for genetic evaluation of lameness.

J Dairy Sci 2021 Jul 15. Epub 2021 Jul 15.

Agriculture Victoria Research, AgriBio, Centre for AgriBioscience, Bundoora, Victoria 3083, Australia; School of Applied Systems Biology, La Trobe University, Bundoora, Victoria 3083, Australia.

Lameness is a serious health and welfare issue that can negatively affect the economic performance of cows, especially on pasture-based dairy farms. However, most genetic predictions (GP) of lameness have low accuracy because lameness data are often incomplete as data are collected voluntarily by farmers in countries such as Australia. The objective of this study was to find routinely measured traits that are correlated with lameness and use them in multivariate evaluation models to improve the accuracy of GP for lameness. Read More

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Diagnosis of respiratory disease in preweaned dairy calves using sequential thoracic ultrasonography and clinical respiratory scoring: Temporal transitions and association with growth rates.

J Dairy Sci 2021 Jul 15. Epub 2021 Jul 15.

Section of Herd Health and Animal Husbandry, School of Veterinary Medicine, University College Dublin, Belfield, Dublin, Ireland D04 W6F6.

Bovine respiratory disease (BRD) in dairy calves is a multifactorial condition, involving environmental, host, and pathogen factors. Thoracic ultrasound scoring (TUS) has recently been validated as an accurate method of detecting BRD-related lung pathology in dairy calves. Previous studies investigating the use of TUS in preweaned dairy calves have largely been based on cross-sectional data from all-year production systems. Read More

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Milk losses linked to mastitis treatments at dairy farms with automatic milking systems.

Prev Vet Med 2021 Jul 1;194:105420. Epub 2021 Jul 1.

KU Leuven, Department of Biosystems, Division of Animal and Human Health Engineering, Campus Geel, Kleinhoefstraat 4, 2440, Geel, Belgium. Electronic address:

Mastitis-associated milk losses in dairy cows have a massive impact on farm profitability and sustainability. In this study, we analyzed milk losses from 4 553 treated mastitis cases as recorded via treatment registers at 41 AMS dairy farms. Milk losses were estimated based on the difference between the expected and the actual production. Read More

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Transnational health protection strategies and other health-seeking behavior among undocumented and indigenous dairy workers in a rural new immigrant destination.

Soc Sci Med 2021 Jul 8;284:114213. Epub 2021 Jul 8.

Indiana University, Department of Spanish and Portuguese, 355 North Jordan Ave., Global and International Studies Building 2160, Bloomington, IN, 47405, USA. Electronic address:

Latin American immigrants in new immigrant destinations (NIDs) experience numerous barriers that negatively impact their access to healthcare. Yet the wide range of health-seeking behaviors deployed in response to these barriers-particularly among those who are undocumented and indigenous-are not well understood. Further, studies of immigrant health in NIDs tend to take place in those locations, rather than using a multi-sited design. Read More

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Assessment of lime-conditioned dairy manure fine solids captured using dissolved air flotation for fertilization in horticulture.

J Environ Qual 2021 Jul 15. Epub 2021 Jul 15.

Department of Civil and Environmental Engineering, Gund Institute for Environment, and Rubenstein School of Environment and Natural Resources, University of Vermont, Burlington, VT, 05405, USA.

Dissolved air flotation (DAF) has shown potential to substantially improve phosphorus (P) mass balance on dairy farms by capturing P associated with fine solids from liquid manure enabling new management options. However, at <25% total solids, further dewatering is necessary to facilitate export of recovered fine solids off farm for use in bagged or bulk products. Physical conditioners such as quicklime (QL) and lime kiln dust (LKD) are commonly used to enhance mechanical dewatering of biosolids, but their effect on the properties and fertilization value of DAF-captured manure fine solids has not been documented. Read More

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Review: Perspective on high-performing dairy cows and herds.

Animal 2021 Jul 12:100298. Epub 2021 Jul 12.

Department of Animal Sciences and Industry, Kansas State University, Manhattan, KS 66506-0201, USA.

Milk and dairy products provide highly sustainable concentrations of essential amino acids and other required nutrients for humans; however, amount of milk currently produced per dairy cow globally is inadequate to meet future needs. Higher performing dairy cows and herds produce more milk with less environmental impact per kg than lower performing cows and herds. In 2018, 15. Read More

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Shrink, weighing accuracy, and weighing precision of mineral supplement in five commercial dairies in the Western United States.

Transl Anim Sci 2021 Jul 10;5(3):txab087. Epub 2021 May 10.

Department of Animal Sciences, University of Florida, Gainesville, FL 32611, USA.

Shrink, accuracy, and precision of ingredient weighing are critical factors of efficiency in TMR-fed dairy systems. Those factors have been evaluated for major feeds; however, we are not aware of any reports for mineral supplement. Farms commonly mix mineral supplement with other low-inclusion ingredients into a premix which is used later as a single ingredient for TMR formulation. Read More

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Molecular detection of pathogenic Escherichia coli strains and their antibiogram associated with risk factors from diarrheic calves in Jimma Ethiopia.

Sci Rep 2021 Jul 13;11(1):14356. Epub 2021 Jul 13.

College of Agriculture and Veterinary Medicine, Jimma University, Jimma, Ethiopia.

Diarrheagenic Escherichia coli are a number of pathogenic E. coli strains that cause diarrheal infection both in animal and human hosts due to their virulence factors. A cross sectional study was conducted between November, 2016 and April, 2017 to isolate and molecularly detect pathogenic E. Read More

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Quantification of zinc concentrations in serum, milk and faeces of dairy cattle as a measure of effective zinc supplementation for management of facial eczema.

N Z Vet J 2021 Jul 14:1-17. Epub 2021 Jul 14.

Fonterra Co-operative Group Limited, Hamilton, New Zealand.

Method: Seventy cows from one commercial farm in the Waikato region of New Zealand received one of seven dose rates (0, 1.0, 1.5, 2. Read More

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