Distribution and Strain Typing of Brachyspira Pilosicoli in Two Western Australian Piggeries
نویسنده
چکیده
Two piggeries were selected for study. Piggery A was a >2000 sow unit that had had problems with poor growth rates in the grower shed associated with B. pilosicoli infection. Initially 45 samples from problem areas at the farm were examined, then a cross-sectional study was conducted which examined 255 faecal samples taken from healthy animals, including growers, finishers and boars. A cohort study following four litters of piglets (37 pigs) from 3 weeks of age until slaughter at 6 months then was conducted, with 220 faecal swabs collected at 8 samplings.
منابع مشابه
Comparison of prevalence and risk factors for faecal carriage of the intestinal spirochaetes Brachyspira aalborgi and Brachyspira pilosicoli in four Australian populations.
This study examined the prevalence of the intestinal spirochaetes Brachyspira aalborgi and Brachyspira pilosicoli in different Western Australian (WA) populations. Faecal samples included 287 from rural patients with gastrointestinal symptoms, comprising 142 from non-Aboriginal and 145 from Aboriginal people; 227 from recent healthy migrants to WA from developing countries; and 90 from healthy ...
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Avian intestinal spirochaetosis (AIS) is a condition arising from colonization of the caeca and colon of birds with anaerobic spirochaetes of the genus Brchyspira. The purpose of the present study was to evaluate PCR amplification from formalin-fixed, paraffin-embedded tissue method for detecting infected laying hens with Brachyspira pilosicoli with the same primers that have been used for det...
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DNA from gastrointestinal biopsy specimens from 28 Australian patients with histologic evidence of intestinal spirochetosis (IS) was subjected to PCRs to amplify segments of the 16S rRNA and NADH oxidase genes of Brachyspira aalborgi and Brachyspira (Serpulina) pilosicoli. B. aalborgi was identified in specimens from 24 (85.7%) patients and B. pilosicoli in those from 4 (14.3%) patients (2 of w...
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Brachyspira pilosicoli, the causative agent of porcine intestinal spirochetosis, usually has hippurate-cleaving capacity. We have regularly isolated hippurate-negative B. pilosicoli from cases of porcine diarrhea. In this study, we show that these biochemically atypical B. pilosicoli isolates can be classified as B. pilosicoli. 16S ribosomal DNA was partially sequenced from eight hippurate-nega...
متن کاملNeither Hippurate-negative Brachyspira pilosicoli nor Brachyspira pilosicoli Type Strain Caused Diarrhoea in Early-weaned Pigs by Experimental Infection
A hippurate-negative biovariant of Brachyspira pilosicoli (B. pilosicolihipp-) is occasionally isolated in diarrhoeic pigs in Finland, often concomitantly with hippurate-positive B. pilosicoli or Lawsonia intracellularis. We studied pathogenicity of B. pilosicolihipp- with special attention paid to avoiding co-infection with other enteric pathogens. Pigs were weaned and moved to barrier facilit...
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تاریخ انتشار 2000