Download Citation on ResearchGate | Actinobacillus seminis isolated from cattle | The organism commonly referred to as Actinobacillus. Actinobacillus seminis is a well known cause of epididymitis in Australian rams ( Baynes and Simmons, ) and has also been reported as associated with. The main causative agents of ovine infectious epididymitis are Brucella ovis, Actinobacillus seminis, and Histophilus somni [1–3].
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A pattern corresponding to smooth LPS was found in A. In contrast, there are only a few studies about lesions caused by A. Histopathological evaluation was performed after tissue processing by the routine paraffin embedding and staining with hematoxylin and eosin HE.
View at Google Scholar S. Whole actinobbacillus and each subcellular fraction of A. Although both agents are found in the preputial flora of healthy young sheep [ 5 ], A. It is noteworthy that, in cases of chronic epididymitis, testicular consistency can increase irreversibly as a result of atrophy and interstitial fibrosis [ 824 ].
There are rare reports of A.
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No protein of these bacteria cross-reacted with the kDa protein of A. They were fed hay and commercial ration throughout the experiment. Gross findings in rams experimentally infected by Histophilus somni.
The left testis had reduced size and consistency, and in one ram atrophy of the left testis associated with diffuse fibrosis of the tunica vaginalis was observed Figure 5 c. Microscopically, the main lesions were inflammatory changes in the genitourinary tract and testicular actinobxcillus. Evers cautioned against a test and cull program based on A.
Ovine brucellosis caused by B. To detect the kDa protein in membrane microvesicles of A.
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All rams inoculated with A. Actinobacillus seminis is a well known cause of semiins in Australian rams Baynes and Simmons, and has also been reported as associated with metritis, polyarthritis Higgins et alposthitis and mastitis Watt et al Two New Zealand rabbits weighing 2 kg each were intramuscularly inoculated with the kDa protein of A. Am J Vet Res. Mild multifocal lymphohistiocytic infiltrate was observed in mucosa and submucosa of the urinary bladder.
Similarly, rams inoculated with H.
Actinobacillus seminis (Baynes and Simmons) Sneath and Stevens ATCC &r
Actinobacillus seminis is a gram-negative bacterium of the Pasteurellaceae family that is involved in ovine epididymitis. Among the etiologic agents of epididymitis are several bacterial species, such semniis Brucella ovis, Actinobacillus seminis, Mannheimia haemolytica Pasteurella haemolyticaPasteurella multocida, and Histophilus somni Haemophilus somnus 3. Microscopic changes were similar between the two experimental infections.
Rams that did not show libido at some point of the trial zctinobacillus were subjected to electroejaculation [ 13 ].
Clinically, there were a decrease in testicular consistency and an increase in measures of the left epididymis tails in both experimental groups. The main gross changes were observed in the reproductive tract. Specific protein of Actionbacillus. Subscribe to Table of Contents Alerts.
Figure 1B shows the corresponding Western-blot results, which were different for each fraction, showing high antigenic reactivity by the 3 subcellular fractions when tested with the antiserum against whole cells of A. Measurements of the right tail of the epididymides remained unchanged throughout the course of the experimental infections Figure 2.
The values of each point represent the mean. Subclinical cases have been known to persist for up to 4 years. Severe testicular degeneration may impact directly on fertility of the animal.