Abstract
I he succeeded D T Mitchell as head of the Allerton Laboratory in 1918, where he excelled in research on toxic plants, inter alia identifying Matricaria nigellaefolia as the cause of staggers in cattle. When the Faculty of Veterinary Science was established in 1920 he was appointed as the first Prof...
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PMID: 21826830
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Abstract
We determined that mycotoxins and STECs were part of the disease complex for dairy cattle with Jejunal Hemorrhage Syndrome (JHS). For STECs to play a role in the development of JHS, we hypothesized that STEC colonization should also be evident in beef cattle with JHS. Aggressive medical and surgical...
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PMID: 21639911
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Abstract
We present complete genome sequences for both taxa, with analyses involving other species of Streptococcus but focusing on adaptation in the SD species group. We found little evidence for enrichment in biochemical categories of genes carried by each SD strain, however, differences in the virulence g...
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PMID: 21282711
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Abstract
To determine whether postexposure rabies prophylaxis (PEP) in domestic animals, as mandated in Texas, has continued to be effective and to evaluate preexposure or postexposure vaccination failures from 2000 through 2009.
Retrospective case series.
1,014 unvaccinated domestic animals (769 dogs, 126 c...
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PMID: 21155679
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Abstract
Paratuberculosis is a chronic disease in ruminants caused by Mycobacterium avium subsp. paratuberculosis (MAP). Most economic losses due to MAP occur in the dairy industry. However, the infection is not restricted to cattle, but also occurs in other ruminants, such as sheep, goat, and deer. Although...
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PMID: 21207913
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Abstract
Paratuberculosis (Johne's disease) has emerged as one of the most important diseases in cattle. The role of infected bull semen in the spread of infection remains unclear, as the correlation between the amount of excreted Mycobacterium avium subsp. paratuberculosis (semen and feces) and the infectio...
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PMID: 20460836
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Abstract
These results suggested that LDA cattle were in negative energy balance, but AA metabolism and protein synthesis were within a normal range. Lower glucogenic AA was due to the higher gluconeogenesis, and higher ketogenic AA was due to higher ketogenesis....
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PMID: 20460840
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Abstract
We developed an enzyme-linked immunosorbent assay (ELISA) for bovine SP-D and determined the concentration of SP-D in bronchoalveolar lavage fluid (BALF) from calves. Bovine SP-D was purified from BALF using a mannose-Shepharose 6B column. The obtained 44 kDa protein was identified as bovine SP-D by...
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PMID: 20526045
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Abstract
The control measures prescribed by the World Organization for Animal Health (OIE) for international trade in extended semen implicate repeated free testing of the donor's blood for bluetongue virus (BTV). The aim of this study was to validate a real-time RT-PCR for the direct testing of semen for ar...
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PMID: 20674609
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Abstract
The purpose of this study was to develop a model for a routine genetic evaluation of claw health traits and to develop an index including data on claw health and conformation traits. Claw health data comprised observations on 40,536 dairy cows of claw traits recorded by claw trimmers. Claw health tr...
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PMID: 20855023
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Abstract
High-concentrate diets can lead to subacute ruminal acidosis and are known to result in changes of the ruminal fermentation pattern and mammary secretion of fatty acids. The objective of this paper is to describe modifications in milk fatty acid proportions, particularly odd- and branched-chain fatt...
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PMID: 20855010
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Abstract
We conclude that in desert climates, the KK system should be operated continuously to decrease heat stress of multiparous dairy cows, but that operating time could be reduced from 24 to 21 h for primiparous cows. Reducing system operation time should be done carefully, however, because CBT was eleva...
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PMID: 20855029
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Abstract
We describe available models' structure and examine them in the context of current knowledge about host infection and pathogen transmission pathways. We investigate how population structure and herd management are modeled with regard to their influence on contact structure and pathogen transmission....
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PMID: 20854979
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Abstract
An observational study was carried out in Swedish dairy herds to investigate differences between cows with and without displaced abomasum (DA), in concentrations of glucose, insulin, fructosamine, nonesterified fatty acids (NEFA), β-hydroxybutyrate, cholesterol, haptoglobin, increased enzyme activi...
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PMID: 20855003
PDF is available here.
Abstract
This retrospective study identified clinical signs, underlying cardiac conditions, blood findings, echocardiographic findings, and prognosis for 59 cattle with clinical signs of congestive heart failure. Signalment; history; clinical signs; clinicopathologic, echocardiographic, and radiographic find...
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PMID: 21197204
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Abstract
Twenty-four 10- to 16-week-old calves in a dairy herd in Birjand, Iran, inadvertently received an excessive dose of salinomycin mixed with barley grain. There was 58% mortality within 10 d. The calves had high serum AST, LDH, and CK activities; histopathologic lesions in myocardium, liver, and kidne...
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PMID: 21197208
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Abstract
The aim of the study was to develop a procedure to remove spatial trends in irregularly spaced data, with trends partly due to regional differences. Median polish is often used on regularly spaced (lattice) data where column and row medians are removed. For irregularly spaced data a low-resolution m...
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PMID: 20144248
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Abstract
To determine the genetic diversity of group A rotaviruses in bovine calves in Kashmir, India.
Of 200 diarrhoeic faecal samples collected from calves, aged between 0 and 6 months and screened by polyacrylamide gel electrophoresis (PAGE), 31 were detected positive for group A rotaviruses. On G and P g...
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PMID: 20875036
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Abstract
In 2005, the Government of Senegal initiated a tsetse eradication campaign in the Niayes and La Petite Côte aiming at the removal of African Animal Trypanosomosis (AAT), which is one of the main constraints to the development of more effective cattle production systems. The target area has particul...
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PMID: 21073148
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Abstract
Outer membrane proteins of Pasteurella (P.) multocida have been known to be protective immunogens. Pasteurella lipoprotein E (PlpE) has been reported to be an important cross reactive outer membrane protein in P. multocida. The gene encoding the PlpE of P. multocida serotypes A: 3, B: 2 and D: 1 was...
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PMID: 20706030
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Abstract
An ungulate research facility in Fort Collins, Colorado, U.S.A., experienced mortality in white-tailed deer (Odocoileus virginianus) because of epizootic hemorrhagic disease virus (EHDV) infection from 20 August 2007 through 26 September 2007. Epizootic hemorrhagic disease virus (EHDV) was detected...
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PMID: 20945651
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Abstract
We investigated the presence of infections in Iranian Holstein cattle and determined changes in hematological values for infected animals.
Nested PCR was used on blood samples from 143 animals Holstein cattle to detect proviral BIV and BLV gag sequences. Flow cytometric analysis was performed using...
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PMID: 21045371
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Abstract
We determined the changes of body growth, blood profiles of metabolism and hormones caused by intensified nutrition (sufficient total digestible nutrients and digestible crude protein for a target daily gain set at 1.2-1.3 kg/day) in three cattle. The daily gain (DG) was increased during the intensi...
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PMID: 20379086
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Abstract
Cough can be a biomarker in case of respiratory diseases. By monitoring and analyzing cough sounds through automatic devices, the farmer can obtain an early warning about a developing outbreak of respiratory infections. Cough sounds can be characterized by particular acoustic features (amplitude, fr...
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PMID: 20633937
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Abstract
These results indicate that a combination of feeding and standing behavior during the transition can serve as early indicators of claw horn lesions in mid lactation.
Copyright (c) 2010 American Dairy Science Association. Published by Elsevier Inc. All rights reserved....
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PMID: 20723672
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Abstract
Critical to changing biosecurity practices on the farm is an individual assessment of those practices contributing to disease transmission. The purpose of this project was to assess, implement, and refine a biological risk management survey for use on large western United States dairy farms. Assessm...
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PMID: 20723684
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Abstract
Over the last few years, an increasing awareness has arisen in Denmark of the existence of cows with a generally lowered health and production status, referred to as "loser cows." A previous study has estimated that the overall prevalence of loser cows in Danish Holstein herds is 3.2%. The aim of th...
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PMID: 20723712
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Abstract
This report describes the findings in a bull with severe inflammation of the muzzle and nose attributable to a nose ring. The most striking finding was that the bull continually licked the right side of the upper lip. The muzzle and right upper lip were swollen, hard, reddened and partially depigmen...
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PMID: 20814862
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Abstract
The feeding associations among male and female Gulf Coast ticks, Amblyomma maculatum Koch, were examined using archived data obtained from untreated free-ranging cattle pastured on native rangeland. There was significant evidence of a relationship between male and female tick presence on hosts (p-va...
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PMID: 20627588
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Abstract
In 2006, an outbreak of anthrax in Saskatchewan affected several species but most of the losses occurred in cattle. Potential risk factors contributing to this outbreak were investigated through questionnaires involving 117 case farms and 259 control farms geographically representative of the Saskat...
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PMID: 21119863
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Abstract
Mollicutes nasal swab culture status and potential associations with health outcomes were determined in beef feeder calves. Mollicutes culture was positive in 7.6% (22/291) of calves at arrival and in 26.2% (34/130) of calves at first disease treatment. Positive Mollicutes culture at first treatment...
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PMID: 21119871
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Abstract
Our results indicate that FSBM plays a role in the alleviation of diarrhea and in the production of immune-related effector cells such as IgA and haptoglobin in calves....
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PMID: 20662817
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Abstract
The present study aimed to know whether all cows have been showing declining fertility or only a proportion of cows are attributed to the declining fertility, and to describe factors affecting the level of fertility. A total of 131 cows calved from February 2005 to December 2007 in a dairy herd were...
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PMID: 20662816
PDF is available here.
Abstract
We investigate the spatial epidemiology of F. hepatica in dairy herds in England and Wales and develop linear regression models to explain observed patterns of exposure at a small spatial unit, the postcode area. Exposure data used for the analysis were taken from an earlier study of F. hepatica inf...
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PMID: 20227416
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Abstract
Our objectives were to evaluate the associations between lying behavior and lameness, and to determine whether lying behavior can be used as a diagnostic tool for lameness. Electronic data loggers recorded lying behavior of 1,319 cows from 28 farms at 1-min intervals for 5 d. These cows were gait sc...
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PMID: 20655423
PDF is available here.
Abstract
The objective was to evaluate the relative efficacy of a novel, commercially available disinfectant agent (T-Hexx Dragonhyde HBC, Hydromer, Branchburg, NJ) compared with formalin and copper sulfate. The hypothesis was 2 sided; therefore, the hypothesis was that the new agent would be better or worse...
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PMID: 20655432
PDF is available here.
Abstract
Two experiments evaluated the influence of follicular wave at artificial insemination (AI) on fertility of dairy cows. In experiment 1, data from 5,607 lactating cows enrolled in estrous and ovulation synchronization programs for AI were evaluated. Cows' blood was analyzed for progesterone 7 to 14 d...
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PMID: 20655426
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Abstract
In this study the herd alarm level was defined as the proportion of sampled transition cows per herd with increased prepartum nonesterified fatty acid (NEFA), postpartum beta-hydroxybutyrate (BHBA), or NEFA concentrations that were associated with herd-level incidence of displaced abomasum (DA) or c...
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PMID: 20655428
PDF is available here.
Abstract
Among the costs attributed to Mycobacterium avium ssp. paratuberculosis (MAP) infection in dairy cattle, the effects on reproduction and culling are the least documented. To estimate the cost of MAP infections and Johne's disease in a dairy herd, the rates of calving and culling were calculated for...
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PMID: 20655419
PDF is available here.
Abstract
Abomasal displacement is a frequent and important disease of high yielding dairy cows. Although several factors are related to its occurrence, the pathogenesis of the condition is still inadequately understood, particularly in regard to K(+) and insulin homeostasis. For this reason the aim was to in...
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PMID: 20655424
PDF is available here.
Abstract
We examined the long-term effects of daily subcutaneous injections of 15 mg of glucagon during the first 14 d postpartum with or without coadministration of 400 mL of pure glycerol orally on blood metabolites and hormones and liver composition of Holstein dairy cows during early lactation. Fourteen...
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PMID: 20655418
PDF is available here.
Abstract
This case report describes the clinical, ultrasonographic and pathological findings in a five-year-old Swiss Braunvieh cow with extraskeletal chondroblastic osteosarcoma of the neck region. The cow was referred because of a firm, non-painful swelling, approximately 25 cm in diameter, which was situa...
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PMID: 20683827
PDF is available here.
Abstract
A prospective cohort observational study was conducted to investigate the seroprevalence of Anaplasma marginale in Iowa feedlots and its association with morbidity, mortality, and treatment costs. Blood samples were taken from 659 calves from 31 consigners at processing and classified as seropositiv...
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PMID: 21037886
PDF is available here.
Abstract
Giardia duodenalis and Cryptosporidium spp. infections, and the patterns of cyst and oocyst shedding, were observed in a herd of dairy calves in Ontario over a period of 3 mo. Cysts and oocysts were detected and enumerated in fecal samples using immunofluorescence microscopy; Giardia and Cryptospori...
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PMID: 21037883
PDF is available here.
Abstract
This study reports 3 cases of spontaneous papillomavirus infection in 1-week-old calves. Thickening of the omasum and abomasum wall, with acute inflammation, necrosis, ulceration, and neoplastic changes were seen in 1 calf. In the other 2, small papillomas were observed in the omasal mucosa, exhibit...
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PMID: 21037889
PDF is available here.
Abstract
A randomized, controlled, blinded clinical trial was performed at a research feedlot in western Canada. Auction-market-derived steers (n = 288) were randomly assigned to 1 of 3 treatments: 1) no antimicrobials on arrival; 2) oxytetracycline in the starter ration for 14 d; and 3) long-acting oxytetra...
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PMID: 21037885
PDF is available here.
Abstract
On September 6, 2008, bluetongue was detected for the first time in Sweden. Intensified active surveillance in cattle and vector surveillance, prompted by the situation in northern Europe, preceded the detection. A vaccination campaign and intensive surveillance activities were initiated nationally,...
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PMID: 20675625
PDF is available here.
Abstract
We conducted cross-sectional studies in the New York City Watershed to ensure a valid estimate of the risk associated with Cryptosporidium infection in dairy herds. Our aims were to obtain species-specific estimates of the prevalence of Cryptosporidium in dairy cattle and to investigate seasonal var...
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PMID: 20397026
PDF is available here.
Abstract
We identified a 463-bp region within the LR gene (the XbaI-PstI [XP] fragment) that inhibited bICP0 protein and RNA expression in transiently transfected mouse neuroblastoma cells. Small noncoding RNAs (sncRNAs) encoded within the XP fragment (20 to 90 nucleotides in length) were detected in transie...
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PMID: 20410286
PDF is available here.
Abstract
We examined 38 top Chinese Holstein sires in Beijing, four of which were identified as CVM carriers. Furthermore, 555 daughters of the four CV sires were examined and 44.0% of them were identified as heterozygotes at the mutation site. The association analysis between estimated breeding values (EBV)...
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PMID: 20650855
PDF is available here.