Mammary Gland Histological Structure in Relation with Milk Production in Sheep
Keywords:
histology, mammary gland, milk production, Ţurcana breed sheepAbstract
There were collected samples of mammary gland tissue from Ţurcana breed sheep, nearly aged, in lactation stage and with similar mammary gland volume/conformation. By histological and stereological evaluation were determined the relative areas of glandular parenchyma (mammary alveoli, excretion canaliculli system) and stroma (connective tissue, blood vessels, nerves). Before histological sample collecting was determined the average milk production resulted from three successive milking days.
The results revealed positive correlations between average milk production and glandular parenchyma area and negative correlations between average milk production and connective stroma area from mammary gland.
References
Hovey, C. Russell, Josephine E., Trott and Barbara K. Vonderhaar, Establishing a Framework for the Functional Mammary Gland: From Endocrinology to Morphology. Journal of Mammary Gland Biology and Neoplasia, 2002, Vol. 7, No. 1, pp. 17-38.
Martinet, L., Embryologie de la mamelle chez le mouton. Ann. Biol. Anim. Biochim. Biophys., 1962, 2, 175-184.
Marinescu I., Morfostructură şi capacitate productivă la animale. Ed. Ceres, Bucureşti, 1978, pp. 18-132, 152-167.
Seiciu, F., Voicescu S., Glanda mamară, morfofiziologie şi patologie. Ed. Fundaţiei de Mâine, Bucureşti, 1997, 73-89.
Cadar, Mirela, Gaboreanu M., Analiza stereologică a preparatelor microscopice cu metoda planimetrică şi cu cea a ţintelor. Simpozion naţional Cluj, 1998, vol. XXIV, pp. 316-319.
Bancroft, J.D., Stevens A., Theory and Practice of Histological Techniques, fourth ed., Churchill-Livingstone, New York, 1996, pp.35-36, 332-333.
Weibell, E.R., Structure in Space and its Appearance on Sections in Stereology. Proc.2nd Internat. Congr. For Stereology, Chicago, 1967, 28-46.
Hanzen, C., Lactation. Ann. Vet. Med., 1979, pp.123.
Martinet, J., Houbedine L.M., Biologie de la lactation, Ed. Inserm-Inra, Paris, 1993, pp. 124-131.
Akers, R.M., Lactational physiology: A ruminant animal perspective. Protoplasma, 1990, 159, 96-111.
Dulbecco, R., Henahan M. and Armstrong B., Cell types and morphogenesis in the mammary gland. Proc. Natl. Acad. Sci. USA 1982, 79, 7346-7350.
Anderson, R.R., Mammary gland growth in sheep. J. Anim. Sci., 1975, 41, 118-123.
Hovey, R.C., McFadden T.B. and. Akers R.M., Regulation of mammary gland growth and morphogenesis by the mammary fat pad: A species comparison. J. Mammary Gland Biol. Neoplasia, 1999, 4, 53-68.
Robinson, G.W., Karpf, A.B.C. and Kratochwil, G., Regulation of mammary gland development by tissue interaction. J. Mammary Gland Biol. Neoplasia, 1999, 4, 9-19.
Popovici, Gh.D., Fiziologia producţiei de lapte, Ed. Agro-Silvică, Bucureşti, 1964, 51-86.
