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Mammary histology and alveolar cell differentiation during late gestation and early lactation in mammary tissue of beef and dairy heifers

(2006) LIVESTOCK SCIENCE. 105(1-3). p.44-49
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Abstract
Quantitative histology of mammary parenchymal tissue from 16 Hereford and 16 Holstein heifers was determined for tissue obtained on day 150, 180, and 280 of gestation and on day 49 of lactation. Percent area occupied by stromal tissue was progressively decreased on each consecutive sample day during gestation in Herefords and was lower in both breeds during lactation. Overall, area occupied by stromal tissue elements was also greater in Herefords. Percent lumenal space and number of cells per alveolar cross section was consistently greater for Holsteins and increased across sample periods in both breeds. During lactation more than 40% of the alveolar cells in Herefords were characterized as poorly differentiated, but in Holstein heifers nearly all of the cells were classified as either intermediate or fully differentiated. These data provide additional evidence to support the idea that much of the difference in milk production between beef and dairy animals depends on increased mammary function. Whether differences in milk production within dairy breeds are also explained by altered cellular differentiation remains to be determined. Published by Elsevier B.V.
Keywords
MILK-PRODUCTION, GLAND, EPITHELIAL-CELLS, mammary histology, gestation, differentiation, udder, mammary gland, breed, COWS, GROWTH, PROLACTIN

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Citation

Please use this url to cite or link to this publication:

MLA
Akers, RM, Anthony Capuco, and JE Keys. “Mammary Histology and Alveolar Cell Differentiation During Late Gestation and Early Lactation in Mammary Tissue of Beef and Dairy Heifers.” LIVESTOCK SCIENCE 105.1-3 (2006): 44–49. Print.
APA
Akers, R., Capuco, A., & Keys, J. (2006). Mammary histology and alveolar cell differentiation during late gestation and early lactation in mammary tissue of beef and dairy heifers. LIVESTOCK SCIENCE, 105(1-3), 44–49.
Chicago author-date
Akers, RM, Anthony Capuco, and JE Keys. 2006. “Mammary Histology and Alveolar Cell Differentiation During Late Gestation and Early Lactation in Mammary Tissue of Beef and Dairy Heifers.” Livestock Science 105 (1-3): 44–49.
Chicago author-date (all authors)
Akers, RM, Anthony Capuco, and JE Keys. 2006. “Mammary Histology and Alveolar Cell Differentiation During Late Gestation and Early Lactation in Mammary Tissue of Beef and Dairy Heifers.” Livestock Science 105 (1-3): 44–49.
Vancouver
1.
Akers R, Capuco A, Keys J. Mammary histology and alveolar cell differentiation during late gestation and early lactation in mammary tissue of beef and dairy heifers. LIVESTOCK SCIENCE. AMSTERDAM, NETHERLANDS: ELSEVIER SCIENCE; 2006;105(1-3):44–9.
IEEE
[1]
R. Akers, A. Capuco, and J. Keys, “Mammary histology and alveolar cell differentiation during late gestation and early lactation in mammary tissue of beef and dairy heifers,” LIVESTOCK SCIENCE, vol. 105, no. 1–3, pp. 44–49, 2006.
@article{931840,
  abstract     = {Quantitative histology of mammary parenchymal tissue from 16 Hereford and 16 Holstein heifers was determined for tissue obtained on day 150, 180, and 280 of gestation and on day 49 of lactation. Percent area occupied by stromal tissue was progressively decreased on each consecutive sample day during gestation in Herefords and was lower in both breeds during lactation. Overall, area occupied by stromal tissue elements was also greater in Herefords. Percent lumenal space and number of cells per alveolar cross section was consistently greater for Holsteins and increased across sample periods in both breeds. During lactation more than 40% of the alveolar cells in Herefords were characterized as poorly differentiated, but in Holstein heifers nearly all of the cells were classified as either intermediate or fully differentiated. These data provide additional evidence to support the idea that much of the difference in milk production between beef and dairy animals depends on increased mammary function. Whether differences in milk production within dairy breeds are also explained by altered cellular differentiation remains to be determined. Published by Elsevier B.V.},
  author       = {Akers, RM and Capuco, Anthony and Keys, JE},
  issn         = {1871-1413},
  journal      = {LIVESTOCK SCIENCE},
  keywords     = {MILK-PRODUCTION,GLAND,EPITHELIAL-CELLS,mammary histology,gestation,differentiation,udder,mammary gland,breed,COWS,GROWTH,PROLACTIN},
  language     = {eng},
  number       = {1-3},
  pages        = {44--49},
  publisher    = {ELSEVIER SCIENCE},
  title        = {Mammary histology and alveolar cell differentiation during late gestation and early lactation in mammary tissue of beef and dairy heifers},
  url          = {http://dx.doi.org/10.1016/j.livsci.2006.04.026},
  volume       = {105},
  year         = {2006},
}

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