Listar por tema "SUBCLINICAL MASTITIS"
Mostrando ítems 1-17 de 17
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Administration of antibiotics to ewes at the beginning of the dry- period
(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 ... -
Bacterial flora and risk of infection of the ovine teat duct and mammary gland throughout lactation
(2007)We collected samples of teat duct material and mammary secretion from ewes in three farms (flock A, polyparous n = 7; flock B, polyparous n = 6, primiparous n = 4; flock C, polyparous n = 4): 14 samples immediately after ... -
Clinical, bacteriological, cytological and pathological features of teat disorders in ewes
(2007)We describe the features of 13 cases of teat disorders in ewes, as follows: lengthy teats (one case), papilloma infection (two), staphylococcal dermatitis (one), nodules and abscesses (two), teat bites (three), stenosis ... -
Description and validation of a novel technique to study the bacterial flora of the teat duct of ewes
(2006)We describe a new technique that may be used for studying the bacterial flora of the teat duct in live ewes, and we present evidence regarding its accuracy, safety and repeatability. A sterile, plastic, 20 G catheter is ... -
Effects of drying-off procedure of ewes' udder in subsequent mammary infection and development of mastitis
(2013)Objective of the study was to evaluate effects of the procedure followed for udder drying-off (i.e., progressive or abrupt cessation of lactation) in subsequent mammary infection and development of mastitis. In ewes of ... -
The effects of inoculation of Mannheimia haemolytica into the teat of lactating ewes
(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 ... -
Effects of lamb sucking on the bacterial flora of teat duct and mammary gland of ewes
(2008)We aimed (i) to determine differences in bacterial flora of teat duct and mammary gland of ewes before and after suckling, (ii) to evaluate factors potentially affecting those. We collected samples of teat duct material ... -
Experimentally induced teat stenosis in dairy ewes: Clinical, pathological and ultrasonographic features
(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 ... -
Incidence risk and aetiology of mammary abnormalities in dry ewes in 10 flocks in Southern Greece
(1998)In a field investigation of 10 flocks in Southern Greece, 3367 dairy ewes were examined twice, in order to estimate the incidence risk and the aetiology of mammary abnormalities during the dry-period. Abnormal secretion, ... -
The induction of lymphoid follicle-like structures in the ovine teat duct following experimental infection with Mannheimia haemolytica
(2010)The objectives of this study were to investigate the early stages of experimental infection of the ovine mammary gland with Mannheimia haemolytica and to identify the lymphocyte subsets accumulating at the teat duct. M. ... -
Teat disorders predispose ewes to clinical mastitis after challenge with Mannheimia haemolytica
(2006)In order to study the effects of sheep teat disorders on the protection of the mammary gland, we used a Mannheimia haemolytica isolate, which did not cause clinical mastitis when deposited into intact teats. In the first ... -
Teat lesions predispose to invasion of the ovine mammary gland by Mannheimia haemolytica
(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 ... -
Transmission of Mannheimia haemolytica from the tonsils of lambs to the teat of ewes during sucking
(2011)Objective of the work was to study whether Mannheimia haemolytica may be transmitted from the mouth of the lambs into the teat of the dam during sucking. We compared bacterial populations within the teat duct and milk of ... -
Trematode infections in pregnant ewes can predispose to mastitis during the subsequent lactation period
(2014)Objective was to investigate if trematode infections predispose ewes to mastitis and/or metritis. We used 80 trematode-infected ewes: primigravidae in group P-A and multigravidae in M-A remained untreated, primigravidae ... -
Ultrasonographic findings in the ovine udder during involution
(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 ... -
Ultrasonographic findings in the ovine udder during lactogenesis in healthy ewes or ewes with pregnancy toxaemia
(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, ...