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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, ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...