| epidemiological approach to the association between economic efficiency and productivity on swine farms in prince edward island. | regression analysis was used to determine the ability of a number of biological parameters to predict economic efficiency. detailed feed, financial, and production records were maintained by a random sample of eighteen prince edward island (pei) swine producers (each producing over 1000 market hogs per year). relative economic efficiency of the operations was measured using return to management and labor (rml). of the routinely monitored biological parameters, rml on pei farrow-finish operations ... | 1991 | 1889038 |
| serotypes of pseudomonas aeruginosa from human and animal sources. | forty human isolates and twenty-eight animal isolates of pseudomonas aeruginosa from prince edward island area (atlantic canada) were serotyped using a kit consisting of 4 polyvalent o-group antisera and 17 monovalent o-type (serovar) antisera, in accordance with the international antigenic typing scheme. the results showed a difference between humans/dogs (50%/48% group i) and pigs (71% group iv). whereas o-serovar 9 and 1 appeared to be most involved in human and canine infections, o-serovar 3 ... | 1989 | 2517198 |
| isolation and antimicrobial susceptibility of campylobacter coli and campylobacter jejuni from slaughter hogs. | cultural examination of cecal contents from 109 market weight hogs slaughtered in prince edward island during may-july 1988 yielded 62 isolates of campylobacter coli and seven campylobacter jejuni. a commercial latex agglutination test helped to confirm the identification of campylobacter. when tested against four drugs: erythromycin, tetracycline, kanamycin and ampicillin, 11 isolates showed multiple resistance. resistance to erythromycin was seen in 19% and 28.6% of campylobacter coli and camp ... | 1990 | 2308529 |
| occurrence of giardia and cryptosporidium in pigs on prince edward island, canada. | in a cross-sectional study of 633 pigs from 21 herds on prince edward island, canada (pei), the prevalence of infection with cryptosporidium and giardia, and the genotypes and species of isolates were determined in order to establish the zoonotic potential of pigs in this region. as determined by direct immunofluorescence microscopy (dfa), 18 herds (86%) and 163 animals (26%; 95% ci: 22-29%) tested positive for cryptosporidium, while just 3 herds (14%) and 6 animals (1%; 95% ci: 0.4-2%) tested p ... | 2011 | 21868167 |
| a survey of biological productivity of prince edward island swine herds. | sow and feeder pig productivity were measured on a random sample of 32 prince edward island swine farms (each producing over 1000 market hogs per year). productivity parameters could be arranged in a hierarchy, with the highest level on farrow-finish operations represented by pigs weaned per sow per year. the 17 farrow-finish farms in this study averaged 19.6 (+/- 2.2 sd) pigs weaned per sow per year. large variation between farms was observed with a range from 16.2 to 24.9 pigs weaned per sow p ... | 1991 | 1884298 |
| a serological survey of leptospirosis in prince edward island swine herds and its association with infertility. | a serological survey was undertaken to determine the prevalence of leptospirosis, and to investigate associations between leptospiral antibody titers, and herd measures of reproduction. production records and leptospirosis serology were analyzed for 25 slaughter hogs from each of eleven randomly sampled farrow-finish operations on prince edward island. the effect of selected leptospiral serovars on nonproductive sow days per parity (npsd/p) and the proportion of pigs born dead was evaluated. the ... | 1991 | 1790491 |
| epidemiological associations between mycoplasma hyopneumoniae and actinobacillus pleuropneumoniae antibody titers and lung lesions in prince edward island swine herds. | a survey of anteroventral (av) lung lesions, pleuritis and serology for mycoplasma hyopneumoniae (mh) and actinobacillus pleuropneumoniae (ap) was conducted on a minimum of 25 slaughter hogs from each of 18 randomly sampled prince edward island farms (producing over 1,000 market hogs per year). the data were analyzed to evaluate the potential role of these two agents as risk factors for the two conditions, using crude and multivariable techniques, as well as individual and herd data. anteroventr ... | 1991 | 1790490 |
| lesions associated with postweaning multisystemic wasting syndrome in pigs from prince edward island, canada. | | 2000 | 10730944 |
| evaluation of rapid gross visual appraisal of swine lungs at slaughter as a diagnostic screen for enzootic pneumonia. | a rapid gross visual appraisal of enzootic pneumonia lesions was made of 87 lungs at a local abattoir and the lungs were then set aside and examined in more detail. a sample of pulmonary tissue was taken from each lung and submitted for bacterial and histological examination. the principal investigator who had performed the gross and detailed lung scores was then used to assess the agreement of two inspectors who were scoring lung lesions in the abattoir. the pearson's correlation coefficient be ... | 1993 | 8431802 |
| implementation of a computer simulation swine tactical decision, support model in prince edward island. | | 1994 | 8055428 |
| serologic evidence of porcine reproductive and respiratory syndrome (prrs). | | 1994 | 8044761 |
| ascariasis, respiratory diseases and production indices in selected prince edward island swine herds. | the levels of production, ascarid burden and respiratory disease were measured on 15 purposively selected swine herds, and the relationships between the various measures of ascarid burden were examined. on each farm 30 randomly selected pigs were weighed and rectal fecal samples were collected at approximately 11, 15, 19 and 22 weeks of age, and at slaughter. fecal ascarid-egg counts and duration of infection were combined to calculate a composite measure of ascarid burden called "lifetime burde ... | 1990 | 2357664 |
| effect of ascariasis and respiratory diseases on growth rates in swine. | growth rates, measures of ascarid burden, and the levels of anteroventral pneumonia and atrophic rhinitis at slaughter were determined for 352 hogs born between march 8 and march 28, 1987 on 15 farms located in prince edward island. regression analyses were used to determine associations between average daily gain (adg) and independent variables controlling for sex, farm, and litters nested within farm. the regression model accounted for 75.4% of the variation in adg. the number of intestinal as ... | 1990 | 2357666 |