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Porcine abortions associated with Fungi, Actinomycetes, and Rhodococcus sp
Abstract:
History, lesions, and results of microbiologic examinations are given for four porcine abortions associated with fungi and one each associated with Actinomadura madurae, an aerobic actinomycete, and Rhodococcus sp. The fungi were Gliomastix sp., Petriellidium boydii, Aspergillus fumigatus, and Exophiala jeanselmei. Parvovirus, isolated from one fetus, was the only other infectious agent identified. The presence of fungi, Actinomadura madurae, and Rhodococcus sp. in fetal and placental lesions indicates that they are a primary cause of sporadic abortion in pigs.
Insights
Fungal and bacterial infections, including Actinomadura madurae and Rhodococcus sp., are identified as primary causes of sporadic porcine abortions. These pathogens were found in fetal and placental lesions, confirming their role in pig reproductive losses.
Area of Science:
- Veterinary Pathology
- Mycology
- Bacteriology
Background:
- Sporadic abortions in pigs can have various infectious causes.
- Identifying the specific causative agents is crucial for disease control and prevention.
Purpose of the Study:
- To investigate the microbial causes of sporadic porcine abortions.
- To identify fungal and bacterial pathogens involved in fetal and placental lesions.
Main Methods:
- Histopathologic examination of fetal and placental tissues.
- Microbiologic culture and identification of fungi and bacteria.
- Detection of other infectious agents like parvovirus.
Main Results:
- Four porcine abortions were associated with fungi: Gliomastix sp., Petriellidium boydii, Aspergillus fumigatus, and Exophiala jeanselmei.
- One abortion was linked to Actinomadura madurae (an aerobic actinomycete), and another to Rhodococcus sp.
- Porcine parvovirus was identified in one fetus; no other infectious agents were consistently found.
Conclusions:
- Fungi, Actinomadura madurae, and Rhodococcus sp. are primary causative agents of sporadic abortions in pigs.
- The presence of these microbes in lesions confirms their etiological role.