Exogenous estrogen boosts circulating estradiol concentrations and calcium uptake by duodenal tissue in heat-stressed hens

In the hen, heat stress (HS) disrupts shell calcification and reproductive processes, including hormone synthesis and egg production. Two studies were conducted to investigate palliative effects of exogenous estrogen or dietary vitamin D3 on Ca homeostasis and reproductive physiology during HS. Stud...

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Veröffentlicht in:	Poultry science 2004-06, Vol.83 (6), p.895-900
Hauptverfasser:	Hansen, K.K, Beck, M.M, Scheideler, S.E, Blankenship, E.E
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals Biological Transport calcium Calcium - metabolism Chickens - metabolism cholecalciferol Cholecalciferol - administration & dosage dosage Drug Implants duodenum Duodenum - metabolism Estradiol - administration & dosage Estradiol - blood estrogens Female heat stress Hot Temperature intestinal absorption ion transport laying hens Poultry Diseases - metabolism Stress, Physiological - metabolism Stress, Physiological - veterinary
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