| sero-epidemiological screening of pig sera collected at the slaughterhouse to detect herds infected with aujeszky's disease virus, porcine influenza virus and actinobacillus (haemophilus) pleuropneumoniae in the framework of an integrated quality control (iqc) system. | over a period of six months, approximately 4700 blood samples were collected from 97 pig-finishing farms in the provinces of noord-brabant and gelderland and screened for antibodies with respect to aujeszky's disease virus (adv), porcine influenza virus (pi) and actinobacillus (haemophilus) pleuropneumoniae (app). there were significant differences in the percentages of seropositive pigs between the two provinces, which may be related to the difference in the density of the pig population in the ... | 1990 | 2176752 |
| [serologic studies on the presence of antibodies against haemophilus (actinobacillus) pleuropneumoniae at swine breeding farms in north brabant]. | serological screening for the presence of antibodies to both h. pleuropneumoniae serotype 2 and serotype 9 using the complement fixation test was carried out on twenty-nine piglets production farms of an integrated group in the province of north brabant. antibodies to h. pleuropneumoniae serotype 2 and serotype 9 were not detected on six of the twenty-nine farms when a single screening was performed. the proportions of farms with animals serologically positive in regard to serotypes 2 and 9 were ... | 1989 | 2734766 |
| incidence, economic effects, and control of haemophilus pleuropneumoniae infections in pigs. | this thesis synopsis reports the results of investigations on: the incidence of clinical and subclinical h. pleuropneumoniae infections on pig farms in north brabant; the economic loss on fattening farms; the effect of husbandry; the possibility of eradicating h. pleuropneumoniae on infected breeding farms on the basis of serological testing; the possibility of control on fattening farms by means of vaccination. the principal findings were as follows: clinical and subclinical h. pleuropneumoniae ... | 1986 | 3962149 |
| [serological study of the presence of actinobacillus pleuropneumoniae antibodies serotype 2 and 9 on pig-breeding farms in the provinces of north brabant and overijssel (the netherlands)]. | serological studies for the presence of cft antibodies to actinobacillus pleuropneumoniae, both to serotype 2 and serotype 9, were done in twenty-five sows on each of thirty pig-breeding farms in the provinces of north brabant and overijssel. antibodies to serotype 2 and/or serotype 9 were detected in one or several sows on forty-two out of sixty farms. similar findings were recorded on eighteen and twenty-four farms respectively in the provinces of overijssel and north brabant; the number of he ... | 1990 | 2326781 |