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Experimental staphylococcal mastitis in bitches: Clinical, bacteriological, cytological, haematological and pathological features

Ververidis, H. N.; Mavrogianni, V. S.; Fragkou, I. A.; Orfanou, D. C.; Gougoulis, D. A.; Tzivara, A.; Gouletsou, P. G.; Athanasiou, L.; Boscos, C. M.; Fthenakis, G. C. (2007)

The objectives of the work were to study the features of experimentally induced canine mastitis and to present hypotheses regarding the pathogenesis of the disease. The tight caudal abdominal mammary gland of six bitches ...

The effect of experimentally induced subclinical mastitis on the milk yield of dairy ewes

Saratsis, P.; Alexopoulos, C.; Tzora, A.; Fthenakis, G. C. (1999)

In each of the two experiments, subclinical mastitis was induced by inoculating both mammary glands of Karagouniko and of Chios-cross ewes with a Staphylococcus epidermidis. After inoculation, the somatic cell counts of ...

Ultrasonographic findings in the ovine udder during lactogenesis in healthy ewes or ewes with pregnancy toxaemia

Barbagianni, M. S.; Gouletsou, P. G.; Valasi, I.; Petridis, I. G.; Giannenas, I.; Fthenakis, G. C. (2015)

Objective of the study was to record, by means of ultrasonographic examination, changes occurring during lactogenesis in the udder of healthy ewes and of ewes with pregnancy toxaemia. The work was carried out in 28 ewes, ...

Experimentally induced teat stenosis in dairy ewes: Clinical, pathological and ultrasonographic features

Mavrogianni, V. S.; Fthenakis, G. C.; Burriel, A. R.; Gouletsou, P.; Papaioannou, N.; Taitzoglou, I. A. (2004)

A strain of Staphylococcus chromogenes was introduced into the teat cistern of five ewes, teat inflammation and stenosis being the primary consequences. Initially, the inoculated teats were swollen and warm; later, a hard ...

Teat lesions predispose to invasion of the ovine mammary gland by Mannheimia haemolytica

Fragkou, I. A.; Papaioannou, N.; Cripps, P. J.; Boscos, C. M.; Fthenakis, G. C. (2007)

Teat lesions, produced in ewes by an experimental chapping procedure, were found to facilitate experimental infection with Mannheimia haemolytica, as assessed by observations on infection of the teat skin, teat duct and ...

Administration of antibiotics to ewes at the beginning of the dry- period

Petridis, I. G.; Fthenakis, G. C. (2014)

The objective of the present paper is to review the significance of administration of antibiotics at the end of a lactation period/beginning of the dry-period in ewes. During the stage of active involution, there is an ...

Subclinical mastitis changes the patterns of maternal-offspring behaviour in dairy sheep

Gougoulis, D. A.; Kyriazakis, I.; Papaioannou, N.; Papadopoulos, E.; Taitzoglou, I. A.; Fthenakis, G. C. (2008)

Subclinical mastitis was induced by inoculating one mammary gland in dairy ewes (n = 8) with a Staphylococcus simulans isolate; control ewes (n = 4) were included. The milk yield of inoculated glands decreased (P < 0.001), ...

Patterns of maternal-offspring behaviour of dairy sheep and potential association with mammary health

Gougoulis, D. A.; Kyriazakis, I.; Mavrogianni, V. S.; Fragkou, I. A.; Skoufos, J.; Tzora, A.; Taitzoglou, I. A.; Kokoli, A. N.; Fthenakis, G. C. (2007)

Behaviour during lactation and its relationship with mammary health was investigated in 12 dairy ewes (six with single lambs and six with twins) for 42 d after lambing. Behavioural recordings were made. Samples of teat ...

Ultrasonographic findings in the ovine udder during involution

Petridis, I. G.; Gouletsou, P. G.; Barbagianni, M. S.; Amiridis, G. S.; Brozos, C.; Valasi, I.; Fthenakis, G. C. (2014)

The objective of the study was to record, by means of ultrasonographic examination, changes occurring in the udder of ewes during involution and to compare differences between progressive or abrupt udder drying-off. In ...

The effects of inoculation of Mannheimia haemolytica into the teat of lactating ewes

Mavrogianni, V. S.; Fthenakis, G. C.; Brooks, H.; Papaioannou, N.; Cripps, P. J.; Taitzoglou, I.; Brellou, G.; Saratsis, P. (2005)

The objectives of the work described in this paper were: (i) to study the outcome of challenging ewes with Mannheimia haemolytica, at different sites of their teats, (ii) to compare the effects of two different isolates ...