ACTINOBACILLUS SEMINIS PDF

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Bacteriological tests were done on a large number of different strains of Actinobacillus seminis and also, repeatedly, on the same culture or on different cultures taken periodically from the same donor animal.

These tests were also applied to strains of A. The tests as applied proved that A. Growth was greatly enhanced on media enriched with blood or serum and also more luxuriant when incubated in a carboxophilic atmosphere.

Nitrate reduction was found to be a variable characteristic, as it was more often negative, while weakly positive and negative reactions for hydrogen sulphide production were encountered with equal frequency.

On the basis of their bacteriological properties, the strains representing the different serological types can be divided into 2 groups. Strains belonging to the first of these groups conform to the earlier description of A. Although growth did occur aerobically and was more luxuriant in a carboxyophilic atmosphere in all strains, it was always much slower for strains resembling H.

Similarly, the growth produced by these strains was poorer and more irregular on ordinary nutrient media and, although greatly enhanced and more regular in all strains on enriched media, it was again much slower for these strains.

In all stages of development, the colonies of strains similar to H. Packed organisms of these strains were light yellow lemon in colour in contrast to strains resembling A.

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Cite Favorites. Abstract Bacteriological tests were done on a large number of different strains of Actinobacillus seminis and also, repeatedly, on the same culture or on different cultures taken periodically from the same donor animal. Similar articles Bacteriological characteristics of Histophilus ovis and its relationship to similar bacteria. Webb RF. Res Vet Sci. PMID: The usefulness of the API 20 E classification system in the identification of Actinobacillus actinomycetem comitans, Actinobacillus seminis and Pasteurella haemolytica.

Erasmus JA. Onderstepoort J Vet Res. Actinobacillus seminis infection in sheep in the Republic of South Africa. Identification of the problem. Ovine contagious epididymitis: a review. Burgess GW. Vet Microbiol. PMID: Review. Actinobacillus species and their role in animal disease.

Rycroft AN, et al. Vet J. Show more similar articles See all similar articles. Cited by 1 article Morphological, biochemical, antigenic, and cytochemical relationships among Haemophilus somnus, Haemophilus agni, Haemophilus haemoglobinophilus, Histophilus ovis, and Actinobacillus seminis. Stephens LR, et al. J Clin Microbiol. Publication types Comparative Study Actions. Animals Actions. Culture Media Actions. Serotyping Actions. Sheep Actions.

Staining and Labeling Actions. Substances Culture Media Actions. Copy Download.

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Infection of Rams With Actinobacillus Seminis

Bacteriological tests were done on a large number of different strains of Actinobacillus seminis and also, repeatedly, on the same culture or on different cultures taken periodically from the same donor animal. These tests were also applied to strains of A. The tests as applied proved that A. Growth was greatly enhanced on media enriched with blood or serum and also more luxuriant when incubated in a carboxophilic atmosphere. Nitrate reduction was found to be a variable characteristic, as it was more often negative, while weakly positive and negative reactions for hydrogen sulphide production were encountered with equal frequency. On the basis of their bacteriological properties, the strains representing the different serological types can be divided into 2 groups.

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CASE NOTES

Actinobacillus seminis is a well known cause of epididymitis in Australian rams Baynes and Simmons, and has also been reported as associated with metritis, polyarthritis Higgins et al , posthitis and mastitis Watt et al There is a single report of A. The owner of a mob of mixed age first cross ewes reported that weeks prior to lambing due to start mid September , seven ewes aborted or produced stillborn premature lambs. The ewes were running in a pasture paddock in the Orange district of NSW and were supplemented with a mix of grain oats and manufactured sheep pellets. A single, near term lamb with a crown rump length of 40cm was necropsied.

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