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The Evolution of mammary glands at different stages in Sarda dairy ewes: preliminary results

Pulina, Giuseppe and Colitti, Monica and Farinacci, Maura and Mazzette, Alessandro and Canu, Giuliana and Castañares Castro, Natalia and Nudda, Anna (2009) The Evolution of mammary glands at different stages in Sarda dairy ewes: preliminary results. Italian Journal of Animal Science, Vol. 8 (Suppl. 2), p. 652-654. ISSN 1828-051X. Article.

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Abstract

The significance of cytological evolution of alveolar cells explains differences in milk yield that resulted in a different shape of lactation curve. In this paper, investigation of cellular background for this pattern was studied morphometrically in mammary gland of dairy ewes prior to lambing to involution. The ratio of epithelial to the luminal area was greatest at 7 days from lambing, it diminished on day 30 and 60 of lactation and it increased thereafter on day 150 of lactation and on day 7 of involution. The evolution of mammary tissues shows a clear decrease in stromal mass from prepartum until 60 DIM. Structural changes of mammary tissues during late pregnancy, lactation and dry off, can be used as a basis to estimate the evolution of the number of secretory cells in dairy ewes.

Item Type:Article
ID Code:3031
Status:Published
Refereed:Yes
Uncontrolled Keywords:Mammary gland, tissue morphology, ewes, milk, Sardinia
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/19 Zootecnica speciale
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze zootecniche
002 Altri enti e centri di ricerca del Nord Sardegna > Istituto zooprofilattico sperimentale della Sardegna, Sassari
002 Altri enti e centri di ricerca del Nord Sardegna > AGRIS Sardegna, Olmedo
Publisher:Avenue media on behalf of Scientific Association of Animal Production (ASPA)
ISSN:1828-051X
Publisher Policy:Depositato per gentile concessione dell'ASPA
Additional Information:Relazione presentata al 18. Congresso nazionale ASPA, Palermo, 9-12 giugno 2009.
Deposited On:21 Sep 2009 09:05

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