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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Petridis, Ioannis G. Gouletsou, Pagona G. Barbagianni, Marianna S. Amiridis, George S. Brozos, Christos Valasi, Irene Fthenakis, George C. |
| Description | Country affiliation: Greece Author Affiliation: Petridis IG ( Veterinary Faculty,University of Thessaly,43100 Karditsa,Greece.); Gouletsou PG ( Veterinary Faculty,University of Thessaly,43100 Karditsa,Greece.); Barbagianni MS ( Veterinary Faculty,University of Thessaly,43100 Karditsa,Greece.); Amiridis GS ( Veterinary Faculty,University of Thessaly,43100 Karditsa,Greece.); Brozos C ( Faculty of Veterinary Medicine,Aristotle University of Thessaloniki,54124 Thessaloniki,Greece.); Valasi I ( Veterinary Faculty,University of Thessaly,43100 Karditsa,Greece.); Fthenakis GC ( Veterinary Faculty,University of Thessaly,43100 Karditsa,Greece.) |
| Abstract | 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 group A ewes, udder drying-off took place progressively during a period of 22 d; ewes were milked twice daily for the last time on day(D) 0; then, they were hand-milked once daily for a week (D1-D7), which was followed by another week during which ewes were hand-milked once every 2 d (D9, D11, D13), followed by a third week during which ewes were hand-milked once every 3 d (D16, D19, D22). In group B ewes, the procedure took place abruptly; ewes were milked twice daily for the last time on D0 and no milking was carried out after that. B-mode and Doppler ultrasonographic examination of the udder of all ewes was performed throughout the drying-off procedure. Appropriate data management and analysis were performed. Progressive changes of the various parameters evaluated throughout the study period were significant in both groups (P<0.005). Gray-scale results of mammary parenchyma progressively decreased during the study and differed significantly between group A and group B (P=0.049). A temporary increase in cistern volume was evident after cessation of lactation, but differences were not significant between the two groups (P>0.3). Diameter of the external pudendal artery progressively decreased during the study and differed significantly between the two groups (P=0.037). Both resistance index and pulsatility index progressively increased throughout the study period in both groups; for both parameters, differences between the two groups were significant (P<0.0005). B-mode ultrasonographic examination indicated differences in remodelling of the extracellular matrix in relation to the procedure for udder drying-off. Volume of the gland cistern did not appear to be affected by the procedure for udder drying-off. Doppler ultrasonographic examination confirmed that blood flow during initiated involution was lower than during a progressive procedure for drying-off. |
| File Format | HTM / HTML |
| ISSN | 00220299 |
| Issue Number | 3 |
| Volume Number | 81 |
| e-ISSN | 14697629 |
| Journal | Journal of Dairy Research |
| Language | English |
| Publisher | Cambridge University Press |
| Publisher Date | 2014-08-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Veterinary Medicine Lactation Physiology Mammary Glands, Animal Mastitis Veterinary Sheep Diseases Animals Dairying Female Sheep Ultrasonography Journal Article |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Animal Science and Zoology Food Science |
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