Extent and Distribution of Soils in Depressional Areas in the Clarion-Nicollet-Webster Soil Association in lowa

The extent and distribution of soils that occur in depressional areas in the Clarion-Nicollet-Webster soil association have been estimated for Iowa counties from a randomly selected sample. The sample consisted of detailed soil maps of approximately 1000 quarter-section (each about 160 acres), or about 2 percent of the total land area. The data from the soil maps of the samples were projected to give estimates of soil conditions by counties and for the area as a whole. The acreage of depressional soils is estimated to be 4.8 percent of the total soil association area with significant variation between counties. The following data are reported by counties for mineral and organic soils: (1) percentage of quarter-sections with depressional soil areas, (2) average number and acreage of depressional areas per quarter-section, and (3) size class distribution of depressional areas

German guidelines for the reduction of Salmonella prevalence in fattening pigs

In order to detemrine the prevalence of Salmonella spp. in German slaughter pigs, a pilot study was initiated. A comparison of the traditional bacteriological and serological techniques described by Nielsen et al. (1), used in the Danish Salmonella control program, was included in this interlaboratory study

Pilot study on the prevalence of salmonella in slaughter pigs in Germany: IV. Field experiences using the Danish serological method for detection

In an interlaboratory study on the prevalence of Salmonellae in German slaughter pigs a comparison of the traditional bacteriological and the serological technique used in the Danish Salmonella control programme was included. In total, about 12000 animals were investigated using both techniques. Samples were collected from February through June 1996. Seven slaughterhouses distributed over the whole country participated on a voluntary basis. A total of 11,942 animals delivered in 752 lots at ten occasions to the participating slaughterhouses were investigated. The lots often comprised pigs from individual finishing farms. From each lot, a maximum of 50 animals were sampled. A faecal swab, a mesenteric lymph node and a meat sample were collected from each carcass. The results of the microbiological analysis of faeces and lymph nodes of each animal were described in separate presentations

Pilot study on the prevalence of salmonella in slaughter pigs in Germany: III. Detection of salmonellae by PCR, serovar distribution and population analysis of isolates

In a survey on the prevalence of Salmonellae in German slaughter pigs, almost 12,000 pig carcasses were investigated by standard cultural, immunological and PCR technique\u27s. Seven abattoirs distributed all over Germany were included into the study. Each abattoir was investigated on ten weekly sampling occasions. In total 6% of all slaughter pigs were positive in faecal or lymphnode material. This number increased to I 0% when surface swabs were evaluated as well. From all sources nearly 1400 bacterial isolates were obtained and characterised by traditional and molecular typing methods. Typing at the National Reference Laboratory for Salmonella (NRL) follows a hierarchic protocol. At the beginning the serotype is determined by using poly- and monoclonal antisera for standard slide agglutination. In total 28 serotypes could be detected

German guidelines for the reduction of Salmonella prevalence in fattening pigs

In order to detemrine the prevalence of Salmonella spp. in German slaughter pigs, a pilot study was initiated. A comparison of the traditional bacteriological and serological techniques described by Nielsen et al. (1), used in the Danish Salmonella control program, was included in this interlaboratory study.</p

Pilot study on the prevalence of salmonella in slaughter pigs in Germany: III. Detection of salmonellae by PCR, serovar distribution and population analysis of isolates

In a survey on the prevalence of Salmonellae in German slaughter pigs, almost 12,000 pig carcasses were investigated by standard cultural, immunological and PCR technique's. Seven abattoirs distributed all over Germany were included into the study. Each abattoir was investigated on ten weekly sampling occasions. In total 6% of all slaughter pigs were positive in faecal or lymphnode material. This number increased to I 0% when surface swabs were evaluated as well. From all sources nearly 1400 bacterial isolates were obtained and characterised by traditional and molecular typing methods. Typing at the National Reference Laboratory for Salmonella (NRL) follows a hierarchic protocol. At the beginning the serotype is determined by using poly- and monoclonal antisera for standard slide agglutination. In total 28 serotypes could be detected.</p

Pilot study on the prevalence of salmonella in slaughter pigs in Germany: IV. Field experiences using the Danish serological method for detection

In an interlaboratory study on the prevalence of Salmonellae in German slaughter pigs a comparison of the traditional bacteriological and the serological technique used in the Danish Salmonella control programme was included. In total, about 12000 animals were investigated using both techniques. Samples were collected from February through June 1996. Seven slaughterhouses distributed over the whole country participated on a voluntary basis. A total of 11,942 animals delivered in 752 lots at ten occasions to the participating slaughterhouses were investigated. The lots often comprised pigs from individual finishing farms. From each lot, a maximum of 50 animals were sampled. A faecal swab, a mesenteric lymph node and a meat sample were collected from each carcass. The results of the microbiological analysis of faeces and lymph nodes of each animal were described in separate presentations.</p

Pilot study on the prevalence of salmonella in slaughter pigs in Germany: I. Prevalence of salmonella in swine carcasses by cultural methods

In order to determine the prevalence of Salmonella spp. in German slaughter pigs, a study including three laboratories was initiated. Samples were collected from February through June 1996. Seven slaughterhouses distributed over Germany participated on a voluntary basis. A total of 11,942 animals delivered in 752 lots at ten occasions to the participating slaughterhouses were investigated. The lots often comprised pigs from individual finishing farms. From each lot, a maximum of 50 animals were sampled.</p