Influence of different calcium supplies and a single vitamin D injection on vitamin D receptor and calbindin D9k immunoreactivities in the gastrointestinal tract of goat kids

Journal of Animal Science
K Sidler-LauffAnnette Liesegang

Abstract

The purpose of this study was to investigate whether diets differing in Ca concentration would have an influence on vitamin D (VitD) receptor (VDR) and calbindin D9k (Calb9k) immunoreactivities in the gastrointestinal tract of growing goats. In addition, the effect of a single VitD injection was studied, to clarify whether exogenous VitD would further increase the active Ca absorption mechanisms. The hypothesis of the study was that reduced Ca intake would lead to greater active Ca absorption, and with that, to greater amounts of VDR and Calb9k immunoreactivities. The normal Ca kid group (according to age requirements) received 2.5 to 6 g of Ca/d, whereas the lesser Ca kid group (less than requirements) received 1.5 to 4 g of Ca/d from wk 6 (weaning) to 15 (slaughter). In addition, 5 and 6 goat kids, respectively, of each group (normal Ca kid group, lesser Ca kid group), were injected with VitD (0.05 mg of cholecalciferol/kg of BW) in wk 14 of life. Blood samples were taken in wk 14 and 15. Calcium and VitD (25-hydroxyvitamin D and 1,25-dihydroxyvitamin D) concentrations were determined in serum. Immediately after slaughter, the duodenum (DD) and rumen (RU) were mounted in conventional Ussing chambers. Unidirectional flux rates...Continue Reading

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Citations

Nov 22, 2011·Nutrition Research Reviews·Javier Martín-Tereso, Martin W A Verstegen
Sep 24, 2014·The Veterinary Clinics of North America. Food Animal Practice·Javier Martín-Tereso, Holger Martens
Apr 14, 2015·Journal of Animal Physiology and Animal Nutrition·S KovácsA Liesegang
Jul 11, 2012·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Mirja R WilkensBernd Schröder
Dec 3, 2010·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Mirja R WilkensBernd Schröder
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Jul 7, 2020·American Journal of Physiology. Gastrointestinal and Liver Physiology·Carmen J ReynoldsJesse P Goff
May 3, 2016·Journal of Animal Science·D SchwallerA Liesegang

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