Now showing items 1-8 of 8
An investigation into hormonal regulation of ovine mammary gland growth during pregnancy
(Virginia Tech, 1985-05-05)
Prepartum, multiparous ewes were randomly assigned to experimental groups and sacrificed at 50(n=5), SO(n=4),115(n=5), and 140(n=4) days of gestation. Serum harvested the week prior to slaughter was assayed for progesterone ...
Effects of bodyweight and plane of nutrition on mitogenic capacity of mammary extracts in cell culture, mammary growth and development, and protein expression profiles of mammary tissue in Holstein heifers
(Virginia Tech, 2004-12-16)
Mammary gland samples from a large serial-slaughter Holstein heifer nutrition trial were used to determine the effects of stage of development and nutritional management on mitogenic activity of mammary extracts and mammary ...
In vitro milk protein secretion by explants of Holstein bull mammary tissue from two different genetic lines
(Virginia Tech, 1990-02-05)
<p>The ability of mammary tissue from mature Holstein bulls to respond to hormonal stimuli in organ culture to synthesize and secrete milk proteins was studied. Sixteen bulls from the genetic selection and control lines ...
Innate Immune Cells may be Involved in Prepubertal Bovine Mammary Development
(Virginia Tech, 2015-07-09)
Pre-pubertal bovine mammary development involves ductal and stromal tissue changes. In mice, this process is impacted by presence of innate immune cells. Whether or not such immune cells are present or involved in bovine ...
Histological evaluation of ovine mammary tissue xenografted into cyclosporine treated mice
(Virginia Tech, 1988-02-18)
Xenogeneic transplantation of immortalized bovine mammary epithelial cells
(Virginia Tech, 1994-12-05)
<p>The focus of this research was to investigate the use of an immortalized bovine mammary epithelial cell line as a starting material for xenogeneic transplantation into the mammary glands of immunocompetent recipients. ...
The Effects of Tamoxifen on Mammary Development in Prepubertal Heifers
(Virginia Tech, 2013-08-28)
Our purpose was to determine the effects on mammary gland development in prepubertal heifers given the anti-estrogen tamoxifen. Sixteen Holstein calves were randomly assigned to one of two treatment groups: tamoxifen-injected ...
Effects of varying energy intakes on mammary growth and development in prepubertal heifers
(Virginia Tech, 2003-05-16)
Rapid rearing of dairy heifers during late prepuberty has been linked to impairments in mammary development and reductions in milk yield. Our objective was to determine how varying energy intakes between 2 and 14 wk of ...