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SOMATOTROPIN RESPONSE TO CORTICOSTERONE AND THE THYROID HORMONE T3 DURING CHICK EMBRYONIC DEVELOPMENT: INVOLVEMENT OF TYPE I AND TYPE II GLUCOCORTICOID RECEPTORS
(2004-05-17)
Corticosterone (CORT) can stimulate growth hormone (GH) cell (somatotroph) differentiation and GH secretion on embryonic day (e) 12 but not e20 in the chicken. GH induction involves both glucocorticoid receptors (GR) and ...
The effect of sperm mobility phenotype on fertility persistence in layer and broiler hens
(2008)
Domestic fowl (Gallus gallus domesticus) were studied to identify accurate predictors of potential fertility in two lines of broiler breeder males along with fertility persistency in layer and broiler hens. Sixty-four ...
Priming with Oral Progestin Before Ovulation Induction Facilitates Ovarian Function in the Cat (Felis catus)
(2007-11-21)
Artificial insemination (AI) has been developed in multiple felid species as a tool for retaining gene diversity in threatened or endangered populations. Yet, pregnancy success remains low (< 5%) following AI in most ...
Characterization of Glucocorticoid-Induced Changes in Gene Expression in the Embryonic Pituitary Gland
(2006-04-27)
We have previously shown that corticosterone (CORT) can induce premature differentiation of somatotrophs in the chicken embryo. CORT induction of GH mRNA is indirect, in that protein synthesis inhibition blocks its inducing ...
Effects of embryonic exposure to androgen-active endocrine disrupting chemicals in Japanese quail
(2005-04-18)
Endocrine disrupting chemicals (EDCs) are compounds that alter the production, secretion, action, and elimination of endogenous hormones. EDCs have been shown to be responsible for disrupting development, reproduction, ...
Effects of Aging and Moderate Calorie Restriction on the Reproductive Axis of the Male Rhesus Macaque (Macaca mulatta)
(2007-04-25)
Calorie restriction (CR) has been established as the only non-genetic method of altering longevity and attenuating biological changes associated with aging. This nutritional paradigm has been effective in nematodes, flies, ...
IDENTIFICATION OF A NON-CLASSICAL GLUCOCORTICOID-RESPONSIVE ELEMENT IN THE 5'-FLANKING REGION OF THE CHICKEN GROWTH HORMONE GENE
(2010)
Growth hormone (GH) effects growth and contributes to a lean phenotype in broiler chickens. GH secretion by the anterior pituitary begins on embryonic day (e) 14, concomitantly with a rise in adrenal glucocorticoids (GC) ...
COMPARATIVE STUDY OF LIPOPROTEIN METABOLISM IN MAREK'S DISEASE SUSCEPTIBLE AND RESISTANT LINES
(2010)
Marek's disease virus (MDV) infection causes atherosclerosis, and prior vaccination prevented the development of this disease. Two main strategies to resist Marek's disease (MD) have been demonstrated: vaccination and ...
Effects of Moderate Calorie Restriction on Ovarian Function and Decline in Rhesus Monkeys
(2006-04-27)
Calorie restriction (CR) has long been heralded as the only proven nutritional intervention for life extension. Recent data demonstrated that moderate CR also extended reproductive lifespan in female rats. The objectives ...
CAN CHOLINE SPARE METHIOININE FROM CATABOLISM IN LACTATING MICE AND DAIRY COWS?
(2009)
Several studies have demonstrated that supplementation of rumen-protected choline (RPC) improves milk production in the lactating dairy cow; however, there are an equal number of studies failing to observe production ...