Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"mammary growth"”.
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Effects of varying energy intakes on mammary growth and development in prepubertal heifers
… 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 age affect mammary parenchymal development. At 2 wk of age, Holstein calves were assigned to 1 of 4 treatments (HH, …
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Ovarian and Growth Hormone Regulation of Mammary Growth and Transcript Abundance in Prepubertal Dairy Heifers
Ovarian secretions and growth hormone (GH) are major endocrine regulators of mammary growth and development in bovine mammary gland; but information on endocrine regulation during early prepubertal period is limited. Our overall objective was to study the regulation of mammary growth and …
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Effects of feeding level and diet composition on mammary growth in prepubertal lambs and mice
… fed from approximately seven to 22 weeks of age. Growth rates differed in the order S>A = G> R, although final weights did not differ among ad libitum fed groups. Lambs in group S had heavier mammary glands, with greater amounts of parenchyma and fat pad and higher content of dry, fat-free …
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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
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 parenchymal composition. Stage of development and nutritional management of …
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Intramammary infection in rapidly growing, non-lactating mammary glands
Intramammary infections (IMI) are common in non-lactating heifer and dry cow mammary glands and occur during periods of appreciable mammary growth and development. The presence of these infections is expected to negatively impact mammary growth and development but has yet to be investigated. The …
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Abundance and Localization of (Yes-associated protein) YAP in Prepubertal Bovine Mammary Tissue
Most mammary development is postnatal. Mammary growth that occurs before puberty is diminutive in amount but consequential for future milk production, especially in dairy heifers. With advanced knowledge on fundamental aspects that govern prepubertal mammary development, scientists and farmers …
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Effects of Dietary Arginine Deficiency on the Reproductive Function of the Rat
… was demonstrated to be required for optimal mammary growth induced by gestation or steroid hormone administration. Maternal arginine deficiency interfered with the prenatal and postnatal development of the offspring. The defects produced in utero persisted when the pups continued to be nursed …
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The Role of Insulin-like Growth Factor-I and IGF-binding Proteins in Mammary Gland Development
Development of the mammary gland is likely mediated by locally produced growth factors acting in concert with circulating mitogens. To investigate the importance of mammary synthesis of insulin-like growth factor-I (IGF-I) and IGF-binding proteins (IGFBP), the initial objective was to evaluate the …
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Epithelial and immune cell dynamics in non-traditional models of mammary postnatal development
Mammary terminal duct lobular units comprise an epithelial bilayer of luminal and myoepithelial cells. The specific contribution of each distinct epithelial compartment to mammary postnatal development and the mammary microenvironment remains to be elucidated. The present study aims to exploit the …