Summer mastitis in heifers: a bacteriological examination of secretions from clinical cases of summer mastitis in Denmark

Madsen, Mia; Sørensen, Gunner Høi; Aalbæk, Bent

doi:10.1016/0378-1135(90)90018-q

Cited by 26 publications

(14 citation statements)

References 16 publications

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“…are among the most frequently isolated pathogens associated with subclinical mastitis in dairy cows (34), often being described as contagious. Specific species of Corynebacterium are sometimes difficult to identify in bacterial culture due to their slow-growing nature (35, 36). Corynebacterium spp.…”

Section: Discussionmentioning

confidence: 99%

A Metataxonomic Approach Could Be Considered for Cattle Clinical Mastitis Diagnostics

et al. 2017

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Mastitis is one of the most costly diseases affecting the dairy industry, and identification of the causative microorganism(s) is essential. Here, we report the use of next-generation sequencing of bacterial 16S rRNA genes for clinical mastitis diagnosis. We used 65 paired milk samples, collected from the mastitic and a contralateral healthy quarter of mastitic dairy cattle to evaluate the technique as a potential alternative to bacterial culture or targeted PCR. One large commercial dairy farm was used, with one trained veterinarian collecting the milk samples. The 16S rRNA genes were individually amplified and sequenced using the MiSeq platform. The MiSeq Reporter was used in order to analyze the obtained sequences. Cattle were categorized according to whether or not 1 of the 10 most abundant bacterial genera in the mastitic quarter exhibited an increase in relative abundance between the healthy and mastitic quarters equal to, or exceeding, twofold. We suggest that this increase in relative abundance is indicative of the genus being a causative mastitis pathogen. Well-known mastitis-causing pathogens such as Streptococcus uberis and Staphylococcus spp. were identified in most cattle. We were able to diagnose 53 out of the 65 studied cases and identify potential new mastitis pathogens such as Sneathia sanguinegens and Listeria innocua, which are difficult to identify by bacterial culture because of their fastidious nature.

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Section: Discussionmentioning

confidence: 99%

A Metataxonomic Approach Could Be Considered for Cattle Clinical Mastitis Diagnostics

et al. 2017

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“…dysgalactiae is a discrete species within the pyogenic cluster of Streptococcus. 25 It is a cause of mastitis in cattle [26][27][28] and is the predominant cause of polyarthritis in goats 29 and newborn lambs. 30,31 A PA of around 16 kDa from S. dysgalactiae was shown to activate bovine, ovine and, to a lesser extent, rabbit and equine Plg, but not porcine Plg or hPlg.…”

Section: Introductionmentioning

confidence: 99%

Structural Consideration of the Formation of the Activation Complex between the Staphylokinase-Like Streptococcal Plasminogen Activator PadA and Bovine Plasminogen

Ward¹,

Abu-Median²,

Leigh³

2008

Journal of Molecular Biology

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“…The organism is also implicated in calf diphtheria and interdigital necrobacillosis (foot rot), and is frequently isolated from the cases of mastitis and metritis [2,3,7,17]. In calves, a depressed immune system together with granulocytopenia is considered to allow F. necrophorum infection to become generalized [9], but granulocytopenia was not observed in our case.…”

mentioning

confidence: 83%

“…In cattle, it is most commonly associated with interdigital necrobacillosis, hepatic abscesses and rumenitis, calf diphtheria (stomatitis, laryngitis and pharyngitis) and anterior vena cava thrombosis [2,3,5,7,[10][11][12]17]. These conditions are often diagnosed from the clinical manifestation and the typical macroscopic appearance of lesions [16].…”

mentioning

confidence: 99%

Immunohistochemical and Ultrastructural Identification of Fusobacterium necrophorum subsp. necrophorum in Bovine Fatal Necrotizing Glossitis.

et al. 2002

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ABSTRACT. A 37-day-old male Japanese black calf showing marked salivation and leucocytosis died and was examined the tissues histologically. Histological lesions were characterized by severe focal necrotic glossitis on the ventral side of the root of the tongue. Immunohistochemically, Fusobacterium necrophorum subsp. necrophorum antigen was detected in the necrotic tissues and its distribution corresponded to that of the gram-negative, nonsporeforming, long filamentous organisms. Ultrastructural similarities between the organism and F. necrophorum subsp. necrophorum, but not subsp. funduliforme were observed. These findings clearly demonstrated that the fatal necrotic glossitis was caused by F. necrophorum subsp. necrophorum. This is the first report of bovine fatal necrotizing glossitis with leucocytosis caused by F. necrophorum subsp. necrophorum infection, and this organism may be an important fatal pathogen in calves with glossal lesions. KEY WORDS: calf, fatal necrotizing glossitis, Fusobacterium necrophorum subsp. necrophorum.

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Summer mastitis in heifers: a bacteriological examination of secretions from clinical cases of summer mastitis in Denmark

Cited by 26 publications

References 16 publications

A Metataxonomic Approach Could Be Considered for Cattle Clinical Mastitis Diagnostics

A Metataxonomic Approach Could Be Considered for Cattle Clinical Mastitis Diagnostics

Structural Consideration of the Formation of the Activation Complex between the Staphylokinase-Like Streptococcal Plasminogen Activator PadA and Bovine Plasminogen

Immunohistochemical and Ultrastructural Identification of Fusobacterium necrophorum subsp. necrophorum in Bovine Fatal Necrotizing Glossitis.

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