Reference : Effect of a combined iodine and selenium supplementation on I and Se status of cows and ...
Scientific journals : Article
Life sciences : Veterinary medicine & animal health
http://hdl.handle.net/2268/89582
Effect of a combined iodine and selenium supplementation on I and Se status of cows and their calves
English
[fr] Effets d'une supplémentation combinée en I et Se sur le statut en I et Se de vaches et de leurs veaux
Guyot, Hugues mailto [Université de Liège - ULg > Département clinique des animaux de production (DCP) > Médecine interne des équidés, des ruminants et des porcs >]
Alves de Oliveira, Laurent [ > > ]
Ramery, Eve mailto [Université de Liège - ULg > Département de sciences fonctionnelles > Biochimie >]
Beckers, Jean-François mailto [Université de Liège - ULg > Département de sciences fonctionnelles > Physiologie de la reproduction >]
Rollin, Frédéric mailto [Université de Liège - ULg > Département clinique des animaux de production (DCP) > Médecine interne des équidés, des ruminants et des porcs >]
Apr-2011
Journal of Trace Elements in Medicine and Biology
Gustav Fischer Verlag
25
2
118-124
Yes (verified by ORBi)
International
0946-672X
Stuttgart
Germany
[en] Cattle ; Iodine ; Selenium ; Thyroid hormones ; TSH ; TRH
[en] Iodine (I) and selenium (Se) deficiencies are commonly reported in cattle, however, there are also studies regarding a very high iodine supply. The aim of the study was to determine the long-term effect of I and Se supplementation on non-pregnant cows, pregnant cows and their calves. The hypothalamus pituitary axis was investigated (TSH, T4, T3 assays) during a TRH challenge on non-pregnant cows. Twenty-four cows, half of them pregnant, were assigned into 2 diet-groups, one group with a low I (0.45 ppm) and Se (0.15 ppm) diet (LISe), the other with a high I (5.45 ppm) and Se (0.45 ppm) diet (HISe), for a period of 120 days. Nutritional (plasma iodide, urinary I, plasma Se, I content in colostrum and foetal fluids) and functional (thyrotropin, thyroid hormones, glutathione-peroxidase activity in erythrocytes) markers of
I and Se status were assayed in dams at regular intervals for 120 days and in their calves at birth. A TRH challenge was performed on 8 non-pregnant cows at day 110 of the trial. At the end of the study, I and Se nutritional markers were higher in dams in the HISe group, compared to the LISe group, except for plasma Se. At birth, I nutritional markers in calves in the HISe group were higher compared to the LISe group. Reactivity of the pituitary–thyroid-axis was not influenced by I and Se supplementation. I and Se supplementation is efficient in improving newborn status.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/89582
10.1016/j.jtemb.2011.02.003

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