| epidemiological study of a tuberculosis outbreak in southwest missouri. | | 1978 | 287114 |
| transmissible drug resistance of escherichia coli and salmonella from humans, animals, and their rural environments. | isolates of escherichia coli and salmonella species obtained from humans, animals, and their rural environments were tested for their ability to transfer multiple drug resistance to competent recipients. in all, 125 (52.9%) of 242 isolates of e.coli transferred all or part of their resistance to e.coli csh-2, and 103 (44.4%) of 232 isolates of e.coli transferred all or part of their resistance to salmonella choleraesuis var. kuzendorf 214. the data suggest that the multiple drug resistance of e. ... | 1975 | 1099148 |
| economic loss from an acute ibr outbreak in a dairy herd. | | 1971 | 4334187 |
| arbovirus studies in the ohio-mississippi basin, 1964-1967. ii. st. louis encephalitis virus. | | 1969 | 5817890 |
| blood hosts of aedes albopictus in the united states. | bloodfed aedes albopictus were collected during 1989-91 by vacuum aspirator from rural and urban study sites in missouri, florida, indiana, illinois, and louisiana. blood hosts identified by elisa and precipitin tests were rabbit (n = 91), rattus sp. (n = 69), dog (n = 14), unidentified mammal (n = 14), cow (n = 13), human (n = 10), deer (n = 10), sciurid (n = 7), turtle (n = 5), murid other than rattus sp. (n = 4), raccoon (n = 3), passeriform bird (n = 3), and cat (n = 2). as an opportunistic ... | 1994 | 7807094 |
| host-feeding patterns of aedes albopictus (diptera: culicidae) at a temperate north american site. | precipitin tests and elisa were used to investigate host-feeding patterns of 172 blood-fed aedes albopictus (skuse) collected at potosi, mo, during the summers of 1989 and 1990. one hundred ten (64.0%) mosquitoes had fed on mammals, 29 (16.9%) on birds, and none on turtles or snakes. thirty-three (19.2%) mosquitoes failed to react in all tests. eighty-six (78.2%) of the 110 mammalian feeds were positive for lower taxa as follows: rabbit, 24.5%; deer, 14.5%; dog, 13.6%; human, 8.2%; squirrel, 7.3 ... | 1993 | 8433336 |
| the role of deer as a possible reservoir host of potosi virus, a newly recognized arbovirus in the united states. | potosi (pot) virus (bunyaviridae) was isolated from aedes albopictus, an introduced asian mosquito species, collected at a used tire yard in potosi, missouri (usa), in august and september, 1989. in september, 1990, small animals were trapped at the tire yard and six cattle were sampled at an adjacent farm; in november 1990 and 1991, blood samples were collected with filter paper strips from 364 hunter-killed, white-tailed deer (odocoileus virginianus) in the region to determine the possible res ... | 1996 | 8827670 |
| theileria buffeli infection of a michigan cow confirmed by small subunit ribosomal rna gene analysis. | theileria buffeli, generally a benign parasite of cattle, has been reported in animals from texas, missouri and north carolina. to date, there have been no reports of the parasite in cattle residing in northern portions of the us. an 8-year-old cow (maine anjou x angus cross-bred) in michigan presented with hemoglobinuria and a packed cell volume of 9. blood films stained with giemsa showed numerous intraerythrocytic parasites morphologically consistent with t. buffeli. the parasite was confirme ... | 2002 | 11900924 |
| anaplasma marginale msp1alpha genotypes evolved under positive selection pressure but are not markers for geographic isolates. | anaplasma marginale (order rickettsiales, family anaplasmataceae), a tick-borne pathogen of cattle, is endemic in tropical and subtropical regions of the world. many geographic isolates of a. marginale occur in the united states and have been identified by major surface protein 1a (msp1a), which varies in sequence and molecular weight due to different numbers of tandem 28- to 29-amino-acid repeats. the present study was undertaken to examine the genetic variations among isolates of a. marginale ... | 2003 | 12682152 |
| bovine vibriosis in missouri: induced estrus as an aid to diagnosis. | | 1965 | 14324604 |
| nutrient content, dry matter yield, and species composition of cool-season pasture with management-intensive grazing. | the objective of this study was to determine changes in the nutrient content, available pasture, and species stand counts of cool season pastures during the grazing season. four replicated pastures were flexibly subdivided into 18 to 36 paddocks and grazed rotationally from late april to november in each of 2 yr. steers were grazed with fresh pasture offered each 1 to 2 d, which resulted in rest periods for paddocks of 17 to 35 d. samples used to determine the nutrient content of pasture forage ... | 1999 | 10416169 |
| german thoracic research scholarship 1996: lung volume reduction for endstage pulmonary emphysema at the washington university of st. louis. | the thoracic research scholarship 1996 of the german society for thoracic and cardiovascular surgery enabled me to visit barnes hospital at the washington university of st. louis, usa, from may to july 1996. at that center prof. j. d. cooper has established lung-volume reduction surgery as a successful surgical treatment for patients with endstage pulmonary emphysema. the operation is performed using left-sided double-lumen intubation. after opening of the chest and pleura and starting single-lu ... | 1998 | 9714499 |
| comparison of milk with serum elisa for the detection of paratuberculosis in dairy cows. | to compare milk with serum elisa for detection of antibodies to mycobacterium paratuberculosis. | 1996 | 8926193 |
| a fatal case of babesiosis in missouri: identification of another piroplasm that infects humans. | to characterize the etiologic agents (mo1) of the first reported case of babesiosis acquired in missouri. | 1996 | 8607592 |
| ivermectin cattle pour-on: duration of a single late spring treatment against horn flies, haematobia irritans (l.) (diptera: muscidae) in missouri, usa. | late spring treatment of cattle with a single dose of pour-on ivermectin (0.5 mg kg-1 body weight) resulted in reduced horn fly populations for approximately 6 weeks, with percentage efficacy exceeding 80% for at least 26 days post-treatment. bioassay with house flies of dung from treated cattle demonstrated suppression of fly emergence for 11 days post-treatment. the subsequent increase in horn fly numbers on the treated herd was predicted by a developmental rate equation interpreted by the tim ... | 1993 | 8128583 |
| fatalities caused by cattle--four states, 2003-2008. | during 2003-2007, deaths occurring in the production of crops and animals in the united states totaled 2,334; of these, 108 (5%) involved cattle as either the primary or secondary cause. during the same period, iowa, kansas, missouri, and nebraska accounted for 16% of the nation's approximately 985,000 cattle operations and 21% of the nation's cattle and calf herd. to better characterize cattle-caused deaths in these four states, investigators reviewed all such deaths occurring during the period ... | 2009 | 19644440 |
| amaranthus retroflexus (redroot pigweed) poisoning in cattle. | amaranthus retroflexus (redroot pigweed)-induced nephrotoxicity was diagnosed in 6 herds of cattle from 3 counties in southwest missouri. forty-eight cows and calves died and another 35 were clinically affected. serum urea nitrogen concentration, determined in 4 affected calves, was between 55 and 284 mg/dl, and serum creatinine concentration was between 6.7 and 29.9 mg/dl. postmortem examination of affected cows and calves revealed amber-colored fluid in peritoneal cavities and retroperitoneal ... | 1994 | 8045809 |
| antimicrobial resistance among pasteurella spp recovered from missouri and iowa cattle with bovine respiratory disease complex. | a retrospective study was conducted to determine the prevalence of antimicrobial resistance among pasteurella spp recovered from cattle with bovine respiratory disease complex. the study extended from january 1976 through may 1980, and included a review of the necropsy records of 386 beef cattle. susceptibility or resistance of the pasteurella isolants was determined by using the standard disk diffusion susceptibility test. each isolant was tested for susceptibility with 15 different antimicrobi ... | 1982 | 7130010 |
| 129i in missouri thyroids. | concentrations of 129i and values of the 129i/127i ration are reported in one sample of indigenous vegetation and in over forty additional individual thyroids of man, wild deer and beef cattle in missouri. the results of this and other studies in our laboratory indicate the following order for successively lower values of 129i/127i ratios in the local environment: rain, wild deer, commercial milk, beef cattle and human. the value of the 129i/127i ratio in the single vegetation sample is intermed ... | 1982 | 7085289 |
| risk factors related to the prevalence of infectious bovine keratoconjunctivitis. | a cross-sectional epizootiologic study was conducted by mailed questionnaire to determine how the prevalence of infectious bovine keratoconjunctivitis (ibk) related to selected predisposing causes. the prevalence of ibk in missouri during the summer of 1978 was 4.97 cases/100 cattle, with 45% of respondents reporting cases of ibk. a higher prevalence of ibk was associated with calves and yearlings, hereford and hereford-cross cattle, backgrounding cattle operations, and herds with a history of i ... | 1981 | 6281222 |
| distribution of culicoides sonorensis (diptera: ceratopogonidae) in nebraska, south dakota, and north dakota: clarifying the epidemiology of bluetongue disease in the northern great plains region of the united states. | the presence or absence of the biting midge culicoides sonorensis wirth & jones (diptera: ceratopogonidae), a primary vector of bluetongue viruses (genus orbivirus, family reoviridae, btv) in north america, was assessed on ranches and farms across the northern great plains region of the united states, specifically nebraska, south dakota, and north dakota, as part of a 2-yr regional study of btv exposure among cattle. blacklight/suction trap samples totaling 280 2-night intervals were taken at 14 ... | 2011 | 21661325 |
| ecologic studies of histoplasmosis. | | 1967 | 5334640 |
| cost and effectiveness of horn fly and face fly control programs in semi-isolated range herds in central missouri. | | 1973 | 4736351 |
| some hormonal characteristics of high and low yielding holstein cows and water buffaloes located in temperate and subtropical environments. | the present study was carried out on 18 holstein cows located in missouri, usa (holstein-m), 32 holstein cows located in egypt (holstein-e), and 32 egyptian water buffaloes (buffaloes-e). half of each group was high yielders and the other half was low with a mean daily milk yield of 32.2 and 18.6 kg for holstein-m, 14.6 and 6.7 kg for holstein-e, and 7.2 and 1.8 kg for buffaloes-e, respectively. blood samples were collected after the morning milking. mean plasma thyroxine and triiodothyronine co ... | 1989 | 2610676 |
| photosensitization outbreak in shorthorn calves in missouri. | | 1991 | 1892941 |
| environmental contamination by lead, cadmium, zinc, and copper in a new lead-producing area. | | 1975 | 1140178 |
| antibiotic resistance patterns of escherichia coli isolated from farm families consuming home-raised meat. | | 1975 | 1101679 |
| epidemiology and toxicology of arsenic poisoning in domestic animals. | arsenic poisoning is one of the more important causes of heavy metal poisoning in domestic animals. two species--dogs and cattle--are intoxicated more frequently than other animals; yet sporadic instances of poisoning have been observed in cats, horses, and pigs. cases observed by veterinary clinicians are either peracute, acute, or chronic intoxications. frequently the initial and only indication that a severe problem exists with peracute poisoning in a cattle herd is dead animals. chronic into ... | 1977 | 908297 |
| iodine-129 in man, cow and deer. | | 1978 | 730521 |
| how research serves the profession. | | 1979 | 503038 |
| seasonality of days open in us holsteins. | the objectives of this study were to establish a pattern for the seasonality of days open (do) by state and region within the united states and to present statistics on regional trends for do. data included 8,676,915 records on do for holsteins from 1997 to 2002 covering all regions of the united states. fixed effects in the model included herd, parity, milk-class, state x month of calving (moc), year of calving x moc, and parity x moc. least squares means of do were highest for calvings in marc ... | 2003 | 14672202 |
| dose determination and confirmation of a long-acting formulation of ceftiofur (ceftiofur crystalline free acid) administered subcutaneously for the treatment of bovine respiratory disease. | the objective of this work was to determine and confirm an effective dose of ceftiofur crystalline free acid sterile oil suspension (ccfa-ss, 100 mg ceftiofur equivalents (ce)/ml], a long-acting single-administration ceftiofur formulation, for the treatment of the bacterial component of bovine respiratory disease (brd). study 1 was a dose determination study that used an intratracheal mannheimia haemolytica (pasteurella haemolytica) challenge model to evaluate single-administration doses of ccfa ... | 2002 | 12081612 |
| theileriosis in a missouri beef herd caused by theileria buffeli: case report, herd investigation, ultrastructure, phylogenetic analysis, and experimental transmission. | a 6-year-old simmental cow infected with theileria buffeli had a clinical disease characterized by theilerial parasitemia, macrocytic normochromic anemia with acanthocytosis and spherocytosis, lymphoid hyperplasia (lymphocytosis, edematous lymphadenomegaly), dysproteinemia, evidence of liver disease, and a low serum antibody titer against t. buffeli. the cow was in a herd in which all cattle originated in missouri; 22/75 (29%) of cattle had a theilerial parasitemia and 26/75 (35%) had titers to ... | 2000 | 10643976 |
| prevalence of escherichia coli o157:h7 in range beef calves at weaning. | this study was designed to determine the prevalence of escherichia coli o157:h7 infection of beef calves at weaning, prior to arrival at the feedlot or mixing with cattle from other sources. fifteen range cow-calf herds, which weaned calves in october and november, were sampled in kansas, missouri, montana, nebraska and south dakota. faecal culture for e. coli o157:h7 was performed and anti-o157 serum antibody titres were determined by blocking elisa. thirteen of the 15 herds (87%) were found to ... | 1999 | 10579450 |
| a simulation exercise to teach principles of bovine reproductive management. | students in reproductive management (a senior-level course with approximately 20 to 50 students per semester) at the university of missouri-columbia are required to participate in a simulation exercise that is designed to improve reproductive efficiency in a beef herd. during a simulated 5-yr period, students must 1) improve reproductive efficiency in a beef cow-herd through implementation of reproductive management principles; 2) determine the economic impact of reproductive management decision ... | 2004 | 15144098 |
| results of a nationwide survey to determine feedstuffs fed to lactating dairy cows. | a nationwide survey to determine feedstuffs used in the diets of dairy cows was conducted. this survey was mailed to dairy nutritionists at universities in each state to describe the use of 144 feedstuffs. twenty-eight states responded and were grouped by region as follows: northeast (maine, maryland, new hampshire, new york, ohio, vermont, and west virginia), northwest (idaho, oregon, and washington), midwest (iowa, illinois, michigan, minnesota, missouri, nebraska, north dakota, south dakota, ... | 1999 | 10068966 |
| comparative infectivity of babesia divergens and a zoonotic babesia divergens-like parasite in cattle. | babesia divergens-like parasites identified in human babesiosis cases in missouri and kentucky and in eastern cottontail rabbits (sylvilagus floridanus) on nantucket island, massachusetts, share identical small subunit ribosomal rna gene sequences. this sequence is 99.8% identical to that of babesia divergens, suggesting that the u.s. parasite may be b. divergens, a causative agent of human and bovine babesiosis in europe. holstein-friesian calves were inoculated with cultured nantucket island b ... | 2005 | 16282295 |
| estimated prevalence of paratuberculosis in missouri, usa cattle. | an absorbed elisa for detection of antibodies against mycobacterium paratuberculosis was performed on serum samples obtained from the missouri animal health laboratory. samples from 1954 missouri cattle representing 89 herds were randomly selected from samples submitted for brucellosis testing. the apparent seroprevalence of paratuberculosis in dairy cattle (8 +/- 3%) was similar to that in beef cattle (5 +/- 2%). when herds were classified as dairy or beef, 74% (14 of 19) of dairy herds and 40% ... | 1997 | 9234425 |
| treatment of cycling and noncycling lactating dairy cows with progesterone during ovsynch. | our objective was to determine whether progesterone (p4) supplementation during an ovsynch protocol would enhance fertility in lactating dairy cows. lactating dairy cows (n = 634) at 6 locations were assigned randomly within lactation number and stage of lactation to receive the ovsynch protocol [ovs; synchronization of ovulation by injecting gnrh 7 d before and 48 h after pgf(2alpha), followed by one fixed-time ai (tai) 16 to 20 h after the second gnrh injection] or ovsynch plus a controlled in ... | 2006 | 16772576 |
| detecting invasive sericea lespedeza (lespedeza cuneata) in mid-missouri pastureland using hyperspectral imagery. | missouri ranks second in cow-calf numbers in the united states and its pastureland has experienced invasion of various plant species. as one of the invasive weeds, sericea lespedeza is becoming a serious threat to pasturelands in this state. the in-situ field survey in these vast pastures is time consuming and often impossible because of accessibility. typical aerial survey is also difficult to detect sericea because the plant is of similar size and color as natural grass and, thus, cannot be ef ... | 2008 | 18363054 |
| rabies surveillance in the united states during 2008. | during 2008, 49 states and puerto rico reported 6,841 cases of rabies in animals and 2 cases in humans to the cdc, representing a 3.1% decrease from the 7,060 cases in animals and 1 case in a human reported in 2007. approximately 93% of the cases were in wildlife, and 7% were in domestic animals. relative contributions by the major animal groups were as follows: 2,389 (34.9%) raccoons, 1,806 (26.4%) bats, 1,589 (23.2%) skunks, 454 (6.6%) foxes, 294 (4.3%) cats, 75 (1.1%) dogs, and 59 (0.9%) catt ... | 2009 | 19751163 |
| repair of abdominal wall defects with bovine pericardium. | ventral hernia repair with prosthetic mesh has recurrence rates up to 54% and is contraindicated in the setting of infection. the aim of this study was to provide our experience with acellular bovine pericardium (veritas collagen matrix; synovis life technologies, inc., st. paul, mn) in complex abdominal wall reconstruction where prosthetic mesh had failed or was contraindicated. between 2005 and 2008, a retrospective review of a single general surgeon's practice identified patients reconstructe ... | 2009 | 19811771 |
| detection of a novel reassortant epizootic hemorrhagic disease virus (ehdv) in the usa containing rna segments derived from both exotic (ehdv-6) and endemic (ehdv-2) serotypes. | epizootic hemorrhagic disease virus (ehdv) is a culicoides-transmitted orbivirus that infects domestic and wild ruminants and is provisionally thought to be distributed throughout africa, north america, australia, east asia and the middle east. historically, of the seven proposed serotypes of ehdv, only ehdv-1 and ehdv-2 have been reported from north america. in 2006, ehdv isolates were recovered from moribund or dead white-tailed deer (odocoileus virginianus) in indiana and illinois that could ... | 2010 | 19828758 |
| species of cryptosporidium detected in weaned cattle on cow-calf operations in the united states. | to determine the species and distribution of cryptosporidium in weaned beef calves in the united states, fecal specimens were collected from 819 cattle between 6 and 18 months of age from 49 operations in 20 states (alabama, california, colorado, georgia, idaho, iowa, kansas, louisiana, mississippi, missouri, nebraska, new mexico, north dakota, oklahoma, oregon, south dakota, tennessee, texas, virginia, and wyoming). fresh feces, collected either from the ground or directly from the rectum of ea ... | 2010 | 20338690 |
| occurrence and endocrine effects of agrichemicals in a small nebraska, usa, watershed. | the bow creek watershed (nebraska, usa) is dominated by the production of beef cattle and row crops; therefore, surface waters are likely to receive runoff containing steroid hormones and pesticides. the goal of the present study was to determine the occurrence and endocrine effects of agrichemicals in this watershed. to accomplish this, four sites within the watershed-pearl, bow, and east bow creeks and a site at the confluence with the missouri river-were selected. in june of 2008, polar organ ... | 2011 | 21732415 |
| Integrating bermudagrass into tall fescue-based pasture systems for stocker cattle. | The daily BW gain of stocker steers grazing tall fescue [Lolium arundinaceum (Schreb.) S.J. Darbysh. = Schedonorus arundinaceus (Schreb.) Dumort.]-based pastures typically declines during summer. To avoid these declines, in part to mitigate the effects of tall fescue toxicosis, it is commonly advised to move cattle to warm-season forage during this period. A 3-yr (2006, 2007, and 2008) grazing study was conducted to evaluate the effect of replacing 25% of the area of a tall fescue/clover (81% en ... | 2011 | 21856893 |
| cadmium, copper, lead and zinc in bovine hair in the new lead belt of missouri. | | 1974 | 4433909 |
| regional differences in the fescue toxicosis response of bos taurus cattle. | cattle of the same breed from different regions of the usa may have altered responses to heat stress and fescue toxicosis. angus steers from missouri (mo ang, n = 10, 513.6 ± 13.6 kg bw) and oklahoma (ok ang, n = 10, 552.8 ± 12.0 kg bw) were fed a diet containing either endophyte-infected (e+, 30 μg ergovaline/kg bw/day) or endophyte-uninfected (e-, 0 μg ergovaline/kg bw/day) tall fescue seed for 23 days. diet treatment began on day 2. animals were maintained at thermoneutrality (tn, 19-22 °c, d ... | 2015 | 24939412 |
| technical note: validation of a chemical pregnancy test in dairy cows that uses whole blood, shortened incubation times, and visual readout. | chemical pregnancy testing is an alternative to traditional methods of pregnancy diagnosis (either manual palpation or ultrasound) in postpartum dairy cows and heifers. the objective was to validate a chemical pregnancy test that confers the advantages of using whole blood, rapid incubation times, and visual readout. blood and milk samples were collected from holstein dairy cows [n=320; 162±62 (mean ± sd) d in milk] on a confinement farm in northeast missouri at 28 d after artificial inseminatio ... | 2016 | 27394956 |