value has to be considered according to reported increase in milk yield and lactation persistency when included in a daily diet in cows [88, 124, 129, 157] and sheep .
The growth-promoting activity of this hormone is believed to be important in regulating growth of the fetus, whereas the lactogenic
activity seems to be important in stimulating mammary gland activity in the mother.
Prolactin, the lactogenic
or luteotropic hormone (LTH), is vital for the proper development of lactation in horses.
Ha-ras and v-raf oncogenes, but not int-2 and c-myc, interfere with the lactogenic
hormone dependent activation of the mammary specific transcription factor.
And compared with progesterone, MPA is a more potent stimulator of lactogenic
hormones, has greater receptor affinity, and leads to greater proliferation in breast tissue.
Compared with progesterone, MPA is a more potent stimulator of lactogenic
hormones and leads to greater proliferation in breast tissue.
Markers in NAF and serum have been compared in the past, showing increases in both serum and breast fluid levels of lactogenic
hormones in women with cystic breast disease (34).
Science and industry have been interested in these properties since the 1920's, and researchers began experimenting with rBST's lactogenic
capabilities as early as the 1930's.
Epitope specificity of protective lactogenic
immunity against swine transmissible gastroenteritis virus.
The levels of blood lipids, notably of triglycerides, peak at gestational weeks 31-36 in response to such gestational hormones as progesterone, 17 [beta]E2 and placental lactogenic
hormone, which also increase during pregnancy (17,18).
immunity enhancement was initiated by deliberate reexposure of pregnant sows to infected piglet feces 6 weeks before farrowing.