| rabies surveillance in the united states during 1989. | in 1989, 4,808 cases of rabies in animals other than human beings were reported to the centers for disease control, 1.8% more (4,724 to 4,808) than in 1988. eighty-eight percent (4,224/4,808) of those affected were wild animals and 12% (584/4,808) were domestic animals. cases were reported from 49 states, the district of columbia, and puerto rico; hawaii remained rabies-free. skunks (1,657) continued to be the most commonly reported rabid wild animal. for the second consecutive year, more cats ( ... | 1990 | 2276949 |
| efficacy of oxfendazole against inhibited larvae of ostertagia ostertagi in naturally infected calves in the southern usa. | forty yearling calves were assigned to four equal groups; three of the groups were treated with oxfendazole at dose rates of 6.75 mg/kg, 4.50 mg/kg, or 2.25 mg/kg bodyweight while the fourth group served as an untreated control. the calves were native to north-east mississippi, usa, and harboured natural infections of gastrointestinal nematodes. the study was conducted during july when inhibited early fourth-stage larvae may be found in large numbers after their acquisition in the spring. the ca ... | 1989 | 2728298 |
| residues of mirex and certain other chlorinated hydrocarbon insecticides in beef fat--1971. | | 1973 | 4205627 |
| effects of late gestation heat stress on postpartum milk production and reproduction in dairy cattle. | carry-over effects of late gestation heat stress on postpartum productive and reproductive traits were estimated from dhi records using 341 lactations from six sites in mississippi. climatological data were gathered from records of weather stations near the sites. using multiple linear regression analyses, predictor variables for lactations were age at calving, lactation number, maximum degree-days (above 32.2 degrees c) during the periods 30 and 60 d prepartum, and precipitation 30 and 60 d pre ... | 1992 | 1500584 |
| tasco-forage: iii. influence of a seaweed extract on performance, monocyte immune cell response, and carcass characteristics in feedlot-finished steers. | tall fescue (festuca arundinacea schreb.) infected with the endophyte neotyphodium coenophialum ([morgan-jones and gams] glenn, bacon, and hanlin) causes fescue toxicosis in cattle grazing the forage, but effects of the endophyte were considered to be abated soon after removal of the animals from pastures. tasco-forage, a proprietary extract from the brown seaweed ascophyllum nodosum, is a known source of cytokinins and has increased antioxidant activity in both plants and the animals that graze ... | 2001 | 11325177 |
| tasco-forage: ii. monocyte immune cell response and performance of beef steers grazing tall fescue treated with a seaweed extract. | effects of applying tasco-forage, an ascophyllum nodosum seaweed-based product prepared by a proprietary process, to endophyte (neotyphodium coenophialum [morgan-jones and gams] glenn, bacon, and hanlin)-infected and endophyte-free tall fescue (festuca arundinacea schreb.) were studied in each of 3 yr (1995, 1996, and 1997) in virginia and in 1996 and 1997 in mississippi. there were 48 steers at each location in each year (n = 240) in a 2 x 2 x 2 factorial arrangement with two replications at ea ... | 2001 | 11325176 |
| implications of proposed changes in bulk tank somatic cell count regulations. | several changes in bulk tank scc (btscc) regulations were proposed at the 1998 annual meeting of the national conference of interstate milk shippers (ncims) by the national mastitis council and other proponents. proposals included 1) using a geometric mean btscc in place of the arithmetic mean, reducing the current limit for btscc from 750,000 to 400,000, and modifying current regulatory protocols. the purpose of this research was to evaluate possible impacts of proposed changes upon producers i ... | 2001 | 11233021 |
| the effectiveness of doramectin pour-on in the control of gastrointestinal nematode infections in cow-calf herds. | two field studies were conducted in the usa to determine the efficacy of a single strategically-timed dose of doramectin pour-on in the control of gastrointestinal nematodosis in beef cow-calf herds and the resultant effects on calf productivity. one study was carried out between may and october 1996 in a spring-calving herd at a site located in idaho (id) and the other between january and july 1997 in a fall-calving herd at a site located in mississippi (ms). in each study, cow-calf pairs were ... | 2000 | 10828515 |
| persistent activity of doramectin injectable formulation against experimental challenge with haemonchus placei in cattle. | two studies were conducted in north america to evaluate the persistent activity of doramectin injectable formulation against experimental challenge with haemonchus placei. in both studies, calves were randomly assigned to 1 of 4 treatment groups (n = 10 per group) or a larval viability group (n = 2). calves were treated subcutaneously in the lateral midline of the neck with saline (1 ml/50 kg) on day 0, or with doramectin (200 mg/kg = 1 ml/50 kg) on day 0, 7, or 14. animals used to assess larval ... | 1999 | 10489196 |
| rabies surveillance in the united states during 1997. | in 1997, 49 states, the district of columbia, and puerto rico reported 8,509 cases of rabies in nonhuman animals and 4 cases in human beings to the centers for disease control and prevention. nearly 93% (7,899) were wild animals, whereas 7% (610) were domestic species. the total number of reported cases increased 19.4% from that of 1996 (7,128 cases). increases were apparent in each of the major species groups, with the exception of cattle. the relative contributions of these groups to the total ... | 1998 | 9861958 |
| rabies surveillance in the united states during 2005. | during 2005, 49 states and puerto rico reported 6,417 cases of rabies in nonhuman animals and 1 case in a human being to the cdc, representing a 6.2% decrease from the 6,836 cases in nonhuman animals and 8 cases in human beings reported in 2004. approximately 92% of the cases were in wildlife, and 8% were in domestic animals. relative contributions by the major animal groups were as follows: 2,534 raccoons (39.5%), 1,478 skunks (23%), 1,408 bats (21.9%), 376 foxes (5.9%), 269 cats (4.2%), 93 cat ... | 2006 | 17173527 |
| the effectiveness of a single treatment with doramectin or ivermectin in the control of gastrointestinal nematodes in grazing yearling stocker cattle. | four studies were conducted to a similar experimental design in the u.s. to evaluate the effectiveness of doramectin injectable administered to yearling stocker cattle in the control of gastrointestinal nematodiasis over the subsequent grazing period. studies were conducted in wisconsin (wi) and arkansas (ar) during the summer season. the other two studies were conducted in georgia (ga) and mississippi (ms) during the winter/spring season. doramectin was compared with both ivermectin injectable ... | 1997 | 9403977 |
| epidemiological study of nematode infections in a grazing beef cow-calf herd in mississippi. | the epidemiology of gastrointestinal nematodes was studied in a spring calving herd in northeast mississippi. pregnant, mixed breed beef cows (n = 15) were placed on a 10 ha fescue/bermuda grass pasture from january 1990-february 1992. in both years, calves were born from february-april and were weaned and removed from the pasture in mid-october. fecal egg counts (epg) and generic composition of nematodes in fecal cultures were determined monthly for cows and calves. estimation of numbers of thi ... | 1996 | 8888554 |
| virus characterization and sequence of the fusion protein gene cleavage site of recent newcastle disease virus field isolates from the southeastern united states and puerto rico. | nine newcastle disease virus (ndv) isolates obtained from puerto rico, georgia, alabama, mississippi, and texas were analyzed for in vivo pathogenicity, biological properties (hemagglutination of mammalian erythrocytes), and for sequence variation at the amino acid and sense rna level of the fusion protein cleavage site. intracerebral pathogenicity index values ranged from 0 to 0.3 and the intravenous pathogenicity index obtained for all isolates was 0. four isolates hemagglutinated bovine eryth ... | 1996 | 8790890 |
| age and seasonal effects on holstein yield for four regions of the united states over time. | multiplicative factors to adjust holstein yield for age and season of calving were calculated and analyzed from 20 data files for region and time. regions were 1) california, 2) minnesota and wisconsin, 3) new york and pennsylvania, and 4) six southern states (texas, louisiana, mississippi, alabama, georgia, and florida). time periods were calving years of 1964 to 1968, 1971 to 1975, 1976 to 1980, 1981 to 1985, and 1986 to 1990. the same statistical model was used that had been used to derive cu ... | 1995 | 8786269 |
| 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 |
| brucellosis in free-ranging bison (bison bison) from teton county, wyoming. | brucellosis was studied opportunistically in bison (bison bison) in the free-ranging jackson herd of approximately 120 in teton county, wyoming (usa) in march 1989. recent abortion was diagnosed in a 2-yr-old cow and brucella abortus biovar 1 was isolated from vaginal discharge, uterine contents, uterus, and supramammary lymph nodes. endometritis was characterized by lymphoplasmacytic infiltrates in the lamina propria and neutrophils in uterine glands and within necrotic debris and exudate in th ... | 1993 | 8445770 |
| status of brucellosis in free-ranging elk and bison in wyoming. | brucella abortus is the causative agent of brucellosis, a disease enzootic in populations of free-ranging elk (cervus elaphus) and bison (bison bison) in the greater yellowstone ecosystem, usa. we define the distribution of the disease in elk throughout wyoming, usa, using three epidemiologic/geographic classifications based on winter-foraging opportunity. antibody prevalence for >3,300 yearling and adult, female elk, sampled from supplemental feedgrounds in western wyoming, usa, since 1985, was ... | 2010 | 20688637 |
| bovine immunodeficiency virus: incidence of infection in mississippi dairy cattle. | bovine immunodeficiency virus (biv), a lentivirus, was originally derived from a holstein cow with persistent lymphocytosis and severe wasting. the virus is known to occur sporadically throughout the united states and perhaps across the globe, but epidemiological data concerning the incidence of biv are meager and the virus was previously unreported in mississippi animals. this study examined the seroepidemiology of biv infection from two mississippi dairy herds (coastal plains and msu). serolog ... | 1994 | 7886931 |
| dual infection with bovine immunodeficiency virus and bovine leukaemia virus in mississippi dairy cattle. | | 1995 | 7793023 |
| estimate of incidence and direct economic losses due to bluetongue in mississippi cattle during 1979. | | 1980 | 6273921 |
| arbovirus studies in the ohio-mississippi basin, 1964-1967. v. trivittatus and western equine encephalomyelitis viruses. | | 1969 | 5817893 |
| arbovirus studies in the ohio-mississippi basin, 1964-1967. iv. cache valley virus. | | 1969 | 5817892 |
| arbovirus studies in the ohio-mississippi basin, 1964-1967. ii. st. louis encephalitis virus. | | 1969 | 5817890 |
| arbovirus studies in the ohio-mississippi basin, 1964-1967. vii. lone star virus, a hitherto unknown agent isolated from the tick amblyomma americanum (linn). | | 1969 | 5810802 |
| fine structure of haemobartonella bovis in blood and liver of splenectomized calves. | | 1970 | 5414865 |
| culicidae and tabanidae as potential vectors of anaplasmosis in mississippi. | | 1969 | 5392934 |
| dermatophilosis (cutaneous streptothricosis) in cattle and horses in mississippi. | | 1969 | 5192658 |
| arbovirus studies in the ohio-mississippi basin, 1964-1967. vi. mermet: a simbu-group arbovirus. | | 1969 | 4980380 |
| efficacy of a morantel sustained-release bolus for control of gastrointestinal parasites in winter-grazed steers in mississippi. | from nov 22, 1983 through may 15, 1984, 36 crossbred steers were allotted into 3 treatment groups (12/group) and were grazed on separate 3.4-hectare pastures. on nov 22, 1983, the steers were administered a single morantel sustained-release bolus (msrb), orally (group 1), or a single dose of thiabendazole (tbz; 66 mg/kg of body weight, orally; group 2), or were left untreated (group 3; controls). animal weights, nematode egg counts in fecal specimens, and plasma pepsinogen concentrations were mo ... | 1987 | 3592388 |
| 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 |
| evaluation of age of dam effects on maternal performance of multilactation daughters from high- and low-milk epd sires at three locations in the southern united states. | angus bulls (n = 16) selected for either high- or low-milk epd but similar growth epd were mated within location at random to angus cows. daughters were bred to calve at 2 yr of age and annually until 6 yr of age. milk yield was measured four times during lactation with a portable milking machine to estimate 12-h milk yield. milk was collected for analysis of the percentage of fat and protein. a mixed model procedure was used to analyze the weaning weight, milk yield, and milk component data. th ... | 2003 | 12854804 |
| candida parapsilosis characterization in an outbreak setting. | candida parapsilosis is an important non-albicans species which infects hospitalized patients. no studies have correlated outbreak infections of c. parapsilosis with multiple virulence factors. we used dna fingerprinting to determine genetic variability among isolates from a c. parapsilosis outbreak and from our clinical database. we compared phenotypic markers of pathogenesis, including adherence, biofilm formation, and protein secretion (secretory aspartic protease [sap] and phospholipase). ad ... | 2004 | 15207060 |
| loss of livestock reaches millions. | | 2005 | 16279374 |
| evaporative tunnel cooling of dairy cows in the southeast. i: effect on body temperature and respiration rate. | the techniques used to mitigate the effects of heat stress on lactating dairy cows are often overwhelmed in the southeastern united states, where elevated heat and humidity often persist for extended periods. a model free-stall barn located at the north mississippi branch experiment station in holly springs was used to evaluate the potential of tunnel ventilation with evaporative cooling to alleviate heat stress in lactating dairy cows. two studies were conducted using 2 groups of 10 lactating h ... | 2006 | 16960066 |
| evaporative tunnel cooling of dairy cows in the southeast. ii: impact on lactation performance. | heat stress has a dramatic impact on the dairy industry, reducing production and profitability throughout the southeastern united states. in many regions, management techniques can be used to mitigate the effects of heat stress, but available cooling technologies are often overwhelmed by the conditions of chronic heat stress present in southeastern united states. although combining tunnel ventilation and evaporative cooling (evaporative tunnel cooling) seems to provide superior cooling for dairy ... | 2006 | 16960067 |
| ultrastructure characteristics of besnoitia darlingitachyzoites brumpt, 1913 (protozoa: sarcocystidae) of the michigan strain mibd1. | tachyzoites of besnoitia darlingi brumpt, 1913 were redescribed based on new materials isolated from virginia opossums (didelphis virginiana, kerr) from michigan, u.s.a. tachyzoites of the mibd1 strain were propagated in bovine turbinate cell culture for more than two years. a comparison with previously described tachyzoites of the b. darlingi op1 strain from mississippi, usa revealed some morphological differences despite the remarkable genetic homogeneity between the two b. darlingi strains. m ... | 2007 | 18383798 |
| relationship between accumulated heat stress during the dry period, body condition score, and reproduction parameters of holstein cows in tropical conditions. | to estimate the relationship between heat stress during the last 60 days prepartum, body condition score and certain reproductive traits in the subsequent lactation of holstein cows, 564 multiparous cows and 290 primiparous cows from four dairy herds were used in a hot, humid region. maximum prepartum degree days were estimated to quantify the degree of heat stress. multiple regressions analyses and logistic regression analysis were performed to determine the effect of prepartum heat stress and ... | 2010 | 19680774 |
| seasonal pattern of inhibition of ostertagia ostertagi in calves in northeast mississippi. | the composition of, and seasonal changes in, populations of gastrointestinal parasites of calves in northeast mississippi were determined for 10 months post-weaning. after weaning on 15 october, 20 mixed breed beef steers were grazed together on a 4 ha fescue/bermudagrass pasture. from november through august of the following year, two of the calves were removed each month for necropsy and counting of gastrointestinal nematodes. eight species of worms were found: haemonchus placei, ostertagia os ... | 1996 | 8983154 |
| trends for conception rate of holsteins over time in the southeastern united states. | the purpose of this study was to estimate trends in conception rate (cr) of holsteins in the southeastern united states over time across month by milk production level and month by days in milk (dim) subclasses. data were obtained from dairy records management systems (raleigh, nc) and included service records from 10 states (virginia, kentucky, north carolina, south carolina, tennessee, georgia, florida, alabama, mississippi, and louisiana). after eliminating records with lactation >1 and uncer ... | 2009 | 19700727 |
| reproductive risk factors for culling and productive life in large dairy herds in the eastern united states between 2001 and 2006. | knowledge of reproductive risk factors for culling is useful in making insemination and culling decisions and helps motivate efforts to reduce or eliminate risk factors. the objective of this study was to describe survival and reproductive risk factors for culling in holstein dairy herds with at least 200 cows. results were calculated from 2,345,015 dhi lactation records from 727 herds with at least 200 cows from 2001 to 2006. herds were located in 36 states primarily located east of the mississ ... | 2010 | 20105533 |
| fecal coliform modeling under two flow scenarios in st. louis bay of mississippi. | st. louis bay, along with its two major tributaries, wolf river and jourdan river, are included in the mississippi 1998 section 303(d) list for violation of the designated water use of recreation and shellfish harvesting. fecal coliform was identified as one of the pollutants that caused the water quality impairment. in order to facilitate the total maximum daily loads (tmdl) development, the fecal coliform dynamics was investigated under 2 flow scenarios with a calibrated and validated modeling ... | 2010 | 20390869 |
| cattle and the natural history of rickettsia parkeri in mississippi. | abstract cattle have been recognized as hosts for amblyomma maculatum, the gulf coast tick, for over 100 years. for nearly as long, a. maculatum have been known to harbor the spotted fever group rickettsia (sfgr), now known as rickettsia parkeri. however, human infection with r. parkeri was not documented until 2004. results presented herein describe a laboratory and a field study evaluating cattle and the natural history of a. maculatum and r. parkeri in mississippi. in the laboratory study, se ... | 2011 | 20846012 |
| rabies surveillance in the united states during 2010. | during 2010, 48 states and puerto rico reported 6,154 rabid animals and 2 human rabies cases to the cdc, representing an 8% decrease from the 6,690 rabid animals and 4 human cases reported in 2009. hawaii and mississippi did not report any laboratory-confirmed rabid animals during 2010. approximately 92% of reported rabid animals were wildlife. relative contributions by the major animal groups were as follows: 2,246 raccoons (36.5%), 1,448 skunks (23.5%), 1,430 bats (23.2%), 429 foxes (6.9%), 30 ... | 2011 | 21916759 |
| farm business and operator variables associated with bulk tank somatic cell count from dairy herds in the southeastern united states. | mastitis is a worldwide problem in dairy cows and results in reduced milk production, the culling of cows, and other economic losses. bulk tank somatic cell count (btscc) over 200,000 cells/ml often indicates underlying subclinical mastitis in dairy herds. several preventative measures that can be implemented to help improve the incidence of mastitis exist, but surveys find these practices not fully adopted by producers. the goal of this research was to analyze the farm and operator characterist ... | 2017 | 28865858 |