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See detailNutritional markers course after oral supplementation with different forms of iodine in Holstein non-lactating cows
Guyot, Hugues ULg; VanParijs, Sandrine; Uyttenhoef, Aude et al

Poster (2009)

Iodine (I) deficiency is commonly reported in cattle around the world and is often associated with clinical or sub-clinical diseases. As most of clinical signs are not pathognomonic, diagnosis has to be ... [more ▼]

Iodine (I) deficiency is commonly reported in cattle around the world and is often associated with clinical or sub-clinical diseases. As most of clinical signs are not pathognomonic, diagnosis has to be confirmed by biochemical analyses such as plasmatic inorganic iodine (PII) or urinary I. Different oral mineral forms of I are available in Europe for cattle. The aim of the study was to compare the kinetic of I in blood and urine in non-lactating cows, following oral administration of different forms of I. Five groups of 6 non-lactating cows (aged 6 ± 2 years, weight 604 ± 89 kg), receiving the same ration (11 kg dry matter) and housed in the same conditions (tied-stall and straw) underwent a double-blinded trial during 2 months. Excepting in Group A (Control), all cows received a daily oral supplementation of I equal to 5 ppm, in the form of Ca(IO3)2 (Group B), KI (Group C), organic form of I 1 (Group D) and organic form of I 2 (Group E). Formulas of the organic forms of I are not public and coverable by patent. Supplementation was stopped at T45. Blood and urine samples were taken at T0, T15, T30 and T60. Thyroxine (T4) was measured at T0, T30 and T60 while PII and urinary I were measured at the 4 times of the trial. Student-t test and multiple comparisons of means (mix crossed model) were used to compare I and T4 concentrations between groups and times. All characteristics about the cows and I levels in blood or urine were not significantly different at T0 (p>0.1). There was no significant difference (p>0.1) between groups B, C, D, E at the different times of the trial. PII and urinary I in Group A were significantly lower than in other groups (p<0.01) at T15 and T30. Highest concentrations of I (PII up to 242 ± 30 µg/L and urinary I up to 2326 ± 439 µg/L) were reached at T15 for groups B, D and E. At T60, PII (19 ± 4 µg/L) and urinary I (110 ± 29 µg/L) of all groups reached the basal level. A good correlation was found between PII and urinary I (r² = 0.77). No significant differences were found about T4 (67 ± 10 nmol/L) in all groups and times (p>0.1). PII and urinary I are good markers to assess I nutritional status. No difference was found between either inorganic or organic forms of I, nor between them. Concerning the mineral forms of I, Ca(IO3)2 might be preferably used because of its higher stability in the mineral complexes. [less ▲]

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See detailEstimation préliminaire de l'impact économique induit par l'infection naturelle par le sérotype 8 du virus de la fièvre catarrhale ovine (FCO) en élevage ovin
Saegerman, Claude ULg; Raes, Marianne; Uyttenhoef, Aude et al

in Epidémiologie et Santé Animale (2008), 54

In Northern Europe, bluetongue caused by the bluetongue virus, serotype 8 (BTV-8), emerged in August 2006 and numerous ruminant herds were found to be affected in 2007. An epidemiological postal survey ... [more ▼]

In Northern Europe, bluetongue caused by the bluetongue virus, serotype 8 (BTV-8), emerged in August 2006 and numerous ruminant herds were found to be affected in 2007. An epidemiological postal survey was sent to 502 sheep holders with the help of the sheep and goats inter-professional federation (called FICOW). A total of 18% of holders responded (mainly meat holders). These holders market their animals on short circuit (direct sales). Despite morbidity and mortality, animal sterility (still not quantified) and lower growth, costs of animal treatment were important (sick animals and/or animals living with sick animals): minimum = 2€/animal treated; maximum = 135€/animal treated; mean = 26€/animal treated and median = 20€/animal treated. Except for rams, the price of animals (for reproduction and meat) has not varied significanthly while the survey was conducted. A second postal survey is programmed after the lambing period to assess reproductive and other economic losses that could not be quantified by the time this survey was run. [less ▲]

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See detailCombined spastic paresis of both gastrocnemius and femoral quadriceps muscles in Belgian blue calves
Janda, Jozef; Uyttenhoef, Aude; Vandeputte, Sébastien ULg et al

Conference (2006)

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See detailTools to assess iodine deficiency in calves born from deficient and non deficient dams
Guyot, Hugues ULg; Uyttenhoef, Aude; Lebreton, Pascal et al

Poster (2006)

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