References of "Guyot, Hugues"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailRespiratory Distress Syndrome in full-term newborn calves: clinical, laboratory and post-mortem findings
Rollin, Frédéric ULg; Danlois, Fabien; Aliaoui, Hamani et al

in Proceedings of the 23rd ACVIM (2005)

Detailed reference viewed: 54 (15 ULg)
Full Text
Peer Reviewed
See detailEmergence of bovine Ehrlichiosis in Belgium
Guyot, Hugues ULg; Vandeputte, Sébastien ULg; Sandersen, Charlotte ULg et al

Conference (2005)

Detailed reference viewed: 19 (4 ULg)
Full Text
See detailLa maladie de Mortellaro : un défi de plus en race blanc-bleu belge
Guyot, Hugues ULg

Conference (2005)

Detailed reference viewed: 60 (8 ULg)
Full Text
Peer Reviewed
See detailCase report : A suspicion of cortico-cerebral necrosis in a Belgian Blue herd after ingestion of moulded silage
Guyot, Hugues ULg; Sandersen, Charlotte ULg; Aliaoui, Hamani et al

Poster (2004)

After ingestion of moulded beet pulp silage, cases of cortico-cerebral necrosis (CCN) and mortalities have been observed in a Belgian Blue (BB) herd. Contamination with Paecilomyces spp., a mould that ... [more ▼]

After ingestion of moulded beet pulp silage, cases of cortico-cerebral necrosis (CCN) and mortalities have been observed in a Belgian Blue (BB) herd. Contamination with Paecilomyces spp., a mould that produces byssochlamic acid, malformins and patulin, has been proven. Among these toxins, patulin is known to have cancerogenic, immunosuppressive and tremorgenic effects, but also acts on the respiratory and digestive systems. Twenty-five days after progressive introduction of beet pulp silage into the ration of a dual purpose BB herd, most of the animals showed diminished appetite, salivation and decreased milk production. All 35 cows were reluctant to consume the beet pulp silage, but continued to eat grass silage voluntarily. Seven of them showed anorexia and nervous symptoms, like head pressing and blindness. Four animals died within 1 week after onset of neurological symptoms. No necropsy has been performed, since legislation does not allow post-mortem examination of the central nervous system in the field. The three survivors had been treated successfully with thiamine (10 mg/kg, IV, TID) and recovered completely within five days. After the beet pulp silage had been identified as causative agent, it had been removed from the animals’ ration and no more clinical case has been observed. Four weeks later, the same beet pulp silage has been reintroduced into the animals’ ration and provoked again diminished appetite, salivation and a decrease in milk production in most of the animals. Clinical signs were also suggesting lead poisoning but any contact with lead containing material could have been excluded. Silage was obviously moulded and analysis revealed the presence of 1.6 million CFU Paecilomyces spp./g of silage. Although no further investigation has been made to identify the mycotoxins, an intoxication with patulin has been suspected, since other mycotoxins produced by these species are less toxic. Although it has not been described that CCN can be induced by ingestion of Paecilomyces spp., it seems that there is a close relation between ingestion of Paecilomyces-contaminated silage and observed clinical signs in this herd. [less ▲]

Detailed reference viewed: 37 (4 ULg)
Full Text
Peer Reviewed
See detailStudy of the role and origin of endotoxemia in the pathogenesis of respiratory distress syndrome in the newborn calf.
Aliaoui, Hamani; Danlois, Fabien; Guyot, Hugues ULg et al

Poster (2004)

Detailed reference viewed: 14 (2 ULg)
Full Text
Peer Reviewed
See detailTrace elements deficiencies in the pathogenesis of respiratory distress syndrome in the mature newborn calf
Guyot, Hugues ULg; Aliaoui, Hamani; Rollin, Frédéric ULg

Poster (2004)

In Belgium, respiratory distress syndrome (RDS) is one of the leading causes of neonatal death in the mature hypermuscled Belgian Blue calf (BB) but also occurs in other cattle breeds. Major clinical ... [more ▼]

In Belgium, respiratory distress syndrome (RDS) is one of the leading causes of neonatal death in the mature hypermuscled Belgian Blue calf (BB) but also occurs in other cattle breeds. Major clinical signs (tachypnea, tachycardia and sometimes depression) develop in the first hours after birth and are due to insufficiency of functional surfactant. Knowing that trace elements deficiencies can slow pulmonary maturation, the aim of this study was to investigate trace elements status in 10 RDS affected BB herds in comparison with 6 reference herds without any evidence of RDS. In each herd, blood was sampled from 10 pregnant or freshly calved healthy cows. In each blood sample, the plasmatic zinc (Zn) and copper (Cu) contents and erythrocytic glutathion peroxydase activity (GSH-pxe) were measured and considered normal when above 15 μmol/L, 14 μmol/L and 250 IU/gHb, respectively. A herd was deficient in one element if at least 30 % of sampled animals were out of normal range for this element. Milk was also sampled and pooled from 10 other cows or, when possible, bulk milk was taken. Milk iodine (I) content was considered normal when above 80 μg/L. Results were compared between groups by Chi-square test. All RDS affected herds had low Zn and Cu concentrations and low GSH-pxe activity. Eight out of 10 had low I in milk. In the non-RDS affected herds, only 1 herd was deficient in I, Zn, Cu and had low GSH-pxe activity, 2 herds were deficient in Zn and Cu and 1 herd was deficient in Cu. RDS affected herds were significantly more often deficient in I and GSH-pxe than non-affected herds. It seems that the trace elements selenium (Se), Zn and Cu play an essential role in the development of RDS. The same applies for I, although not deficient in all herds. The reason for this might be that milk samples were taken during lactation, when cows’ nutrition was different and, in any case, supplemented in I. In mature babies, the same RDS is observed but its etiology is still unclear, although I deficiency in the mother is suspected to play a major role in pathogenesis. Furthermore, it has been demonstrated that a Se-dependent deiodinase is responsible for transformation of thyroxine (T4) into tri-iodothyronine (T3), which is essential for effective surfactant production. In conclusion, results suggest an association between RDS in mature newborn calves and trace elements deficiencies, especially Se and I, that can be responsible for primary surfactant insufficiency. [less ▲]

Detailed reference viewed: 40 (15 ULg)
Full Text
Peer Reviewed
See detailStress echocardiography in horses: comparison of cardiac output during incremental dobutamine infusion in atropinised and non-atropinised ponies
Sandersen, Charlotte ULg; Detilleux, Johann ULg; Delguste, Catherine ULg et al

in Proceedings of the 42d Annual Congress of the British Equine Veterinairy Association (2003, September)

Detailed reference viewed: 11 (3 ULg)
Full Text
Peer Reviewed
See detailOvero lethal white syndrome - two case reports and a review of the litterature
Sandersen, Charlotte ULg; Delguste, Catherine ULg; Cassart, Dominique ULg et al

in Annales de Médecine Vétérinaire (2003), 147(5, OCT-NOV), 359-364

Detailed reference viewed: 93 (5 ULg)
Full Text
Peer Reviewed
See detailSpeed of sound measurements in the evaluation of bone properties in Holstein-Friesian cows: a preliminary study
Sandersen, Charlotte ULg; Guyot, Hugues ULg; Vandeputte, Sébastien ULg et al

in Acta Veterinaria Scandinavica. Supplementum (2003), (Suppl 97), 149

Detailed reference viewed: 13 (4 ULg)
Full Text
Peer Reviewed
See detailUse of atropine to inhibit vagally mediated baroreceptor reflex in horses undergoing dobutamine stress test
Sandersen, Charlotte ULg; Detilleux, Johann ULg; Delguste, Catherine ULg et al

in Pflügers Archiv : European Journal of Physiology (2003), 446(5), 4

Detailed reference viewed: 9 (3 ULg)
Full Text
See detailLe syndrome de détresse respiratoire chez le veau nouveau-né : la clé de l’énigme?
Rollin, Frédéric ULg; Danlois, Fabien; Aliaoui, Hamani et al

in Proceedings: De la recherche à la clinique, Société Française de Buiatrie (2003)

Detailed reference viewed: 246 (32 ULg)
Full Text
Peer Reviewed
See detailEchocardiographic evaluation of cardiac performance during stimulation with dobutamine in conscious horses: a preliminary study
Sandersen, Charlotte ULg; Delguste, Catherine ULg; Debrue, Marie et al

in Proceedings of the 41st Annual Congress of the British Equine Veterinairy Association (2002, September)

Detailed reference viewed: 12 (4 ULg)
Full Text
Peer Reviewed
See detailSpeed of sound measurements in the evaluation of bone properties in Holstein
Sandersen, Charlotte ULg; Guyot, Hugues ULg; Vandeputte, Sébastien ULg et al

in Proceedings of the XXII World Buiatrics Congress (2002)

Detailed reference viewed: 7 (2 ULg)
Full Text
Peer Reviewed
See detailEvolution of serum vitamine E concentration in horses living in a stable affected by equine motor neurone disease (EMND).
Delguste, Catherine ULg; de Moffarts, Brieuc; Sandersen, Charlotte ULg et al

in Proceedings of the 41st Annual Congress of the British Equine Veterinary Association (BEVA) (2002)

Detailed reference viewed: 12 (1 ULg)
Full Text
Peer Reviewed
See detailSerum vitamin E concentrations in a group of horses, with a high incidence of equine motor neurone disease
Delguste, Catherine ULg; de Moffarts, Brieuc; Sandersen, Charlotte ULg et al

in Pflügers Archiv : European Journal of Physiology (2002), 444(1-2), 3

Detailed reference viewed: 27 (6 ULg)
Full Text
Peer Reviewed
See detailEchocardiographic evaluation of cardiac performance during stimulation with dobutamine in conscious horses: a preliminary study.
Sandersen, Charlotte ULg; Delguste, Catherine ULg; Becker, Martine et al

in Pflügers Archiv : European Journal of Physiology (2002), 444(1-2), 4

Detailed reference viewed: 6 (2 ULg)
Full Text
Peer Reviewed
See detailTrace elements deficiencies in Belgian beef and dairy herds in 2000-2001
Rollin, Frédéric ULg; Lebreton, Pascal; Guyot, Hugues ULg

Conference (2002)

Detailed reference viewed: 25 (8 ULg)
Full Text
See detailMise en évidence de carences en oligo-éléments au sein de troupeaux bovins laitiers et viandeux en Wallonie
Guyot, Hugues ULg

Master of advanced studies dissertation (2002)

Basing on soil and forage analyses and on clinical signs, trace element deficiencies can be expected to occur in Wallonian dairy and beef cattle herds. The aim of this study was to evaluate the trace ... [more ▼]

Basing on soil and forage analyses and on clinical signs, trace element deficiencies can be expected to occur in Wallonian dairy and beef cattle herds. The aim of this study was to evaluate the trace element status of these herds and to determine whether differences could be demonstrated between dairy and beef herds. Thirty beef cattle herds and 26 dairy cattle herds that presented health problems or production disturbances underwent a close observation combined with blood samples taken from a sample of healthy animals in order to analyse zinc, copper, erythrocytes’ superoxyde dismutase and erythrocytes’ gluthathion peroxidase (selenium’s marker). Multiple deficiencies were detected in 84% of the herds. No significant difference was found between dairy and beef herds concerning the zinc and copper status, although a significant higher prevalence of selenium deficiency was shown in beef herds. Further studies are needed to demonstrate the impact of the deficiencies on animals’ health and production by re-evaluating these herds after trace element supplementation. [less ▲]

Detailed reference viewed: 67 (6 ULg)