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Nederlands

70 (5) 405-407

Titel: 
A case of fatal pleuritis caused by an esophageal diverticulum in a cow
Auteur(s): 
S. De Vliegher, J. Laureyns, G. Hoflack, D. Beeckman, G. Opsomer, A. de Kruif
Samenvatting: 
This article describes a Belgian White-Blue heifer getting ill five days after a caesarean section. It died of a severe pleuritis caused by a leaking esophageal diverticulum. The presumptive diagnosis was made after passing a stomach tube and was confirmed by an autopsy. Keywords: Cow - Esophageal Diverticulum - Pleuritis
Volledige tekst: 
pp 405-407
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70 (5) 389-404

Titel: 
A retrospective study of surgically treated horses suffering from colic due to lesions located in different parts of the intestines
Auteur(s): 
M. Steenhaut, A. Martens, L. Vlaminck, P. Desmet, F. Gasthuys, A. De Moor, T. Mariën, P. Deprez
Samenvatting: 
In the period 1986-1994 a retrospective study was performed on 2,264 horses with colic at the Faculty of Veterinary Medicine of the Ghent University/Belgium. An exploratory laparotomy was performed in 1,069 horses. In this study the observed pathological conditions in the different parts of the gastrointestinal tract are thoroughly discussed in depth. The origin of colic symptoms was determined by rectal examination or exploratory laparotomy: it was localized in the ascending colon in 31% of the horses and in the small intestine in 25% of them. Less frequently observed localizations were the caecum (8%), the descending colon (3%), the stomach (3%) and the rectum (1%). The localization of colic pathology could not or not exactly be determined in 28% of the cases. Short time survival rates were used. The overall survival rate of conservative and surgical treatment of horses with pathology of the descending colon and pathology of the caecum and/or ascending colon was respectively 80% and 75%. The survival rate of horses with pathology of the small intestine, the rectum and the stomach was less favorable: 54%, 35% and 32% respectively. The risk of developing colic was statistically analyzed according to breed, gender and age. Foals less than 1 year old ran a significantly higher risk of small intestinal volvulus. Geldings and Warmblood horses had a higher incidence of incarceration through the foramen omentale (epiploicon), whereas females and foals had a lower incidence. An inguinal hernia was significantly more often observed in foals and stallions, and significantly less in mares and geldings. Horses aged 9-12 years showed a higher risk of caecal tympany, whereas ponies, males, foals and horses aged 1-4 years ran an increased risk of (ileo)caecal intussusception. Mares and horses aged 1-4 and 5-8 years had a higher incidence of pelvic flexure impaction. The incidence of right colonic displacement was lower in males and foals. Older horses and mares were at significantly greater risk of developing colonic torsion. A higher incidence of left dorsal displacement was observed in geldings and a lower incidence in females.
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pp 389-404
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70 (5) 382-388

Titel: 
Improvement of the efficacy of IB spray vaccinations in layers: a field experiment
Auteur(s): 
M.G.R. Matthijs, R.M. Dwars, J.H.H. van Eck
Samenvatting: 
The efficacy of spray vaccination against Infectious Bronchitis (IB) in rearing layers, was examined in 12 flocks housed on 2 farms. For this purpose the vaccine was prepared with substantially more water than is commonly used in practice and was carefully sprayed in the direction of the animals. Single vaccination at 2 weeks of age resulted in mean 2log HI titres of only 3 to 4 at the end of the rearing period (16 weeks), whereas two vaccinations yielded titres of 6 to 7. Upon a third vaccination, titres increased up to 7 to 9, individually even reaching 11. These titres are distinctly higher than the mean level in the Netherlands. None of the flocks showed clinical symptoms of IB, neither during rearing, nor in the laying period, except one. For unknown reasons, this flock showed a poor serological response after three vaccinations and subsequently experienced clinical IB at the start of the laying period. It is concluded that administration of live IB vaccines as described in this study, deserves large scale practice, because it will then become clear whether this procedure contributes to a better IB prevention or not.
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pp 382-388
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70 (5) 371-381

Titel: 
TREATMENT OF OBESITY – INEVITABLE FRUSTRATION A REVIEW ILLUSTRATED WITH A COMPLEX CASE
Auteur(s): 
M. Hesta, J. Debraekeleer, G.P.J. Janssens, R. De Wilde
Samenvatting: 
The treatment of obesity involves dealing with the psychological aspects, manipulating the diet and increasing the activity level. The objectives of the nutritional management are to decrease energy intake, to stimulate satiety and to provide a balanced nutritional intake that is appropriate for the stage of life and/or concomitant disease. The assessment of a diet for weight reduction should take into account the daily nutrient intake in order to avoid underfeeding of essential nutrients. The treatment of obesity will be illustrated with a complicated case of obesity and renal insufficiency in a dog.
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pp 371-381
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70 (6) 475-480

Titel: 
CERVICAL INSEMINATION IN SHEEP
Auteur(s): 
S. Verberckmoes, I. De Pauw, A. Van Soom, G. Vanroose, H. Laevens, A. de Kruif
Samenvatting: 
In this study, the effect of the insemination dose (250 or 500 x 106 fresh spermatozoa) on pregnancy rate at 35 days post-insemination (PI) in synchronized ewes was analyzed. The 30 days non-return rate was determined by the introduction of an intact ram harnessed with a crayon at 10 days PI. At 35 ± 2 days PI, the ewes were scanned for pregnancy by means of transrectal ultrasonography (7 MHz). Five months PI, the lambing rate and fecundity were recorded. No significant differences (p<0.05) were found in non-return rate, pregnancy or fecundity between 250 and 500 x 106 fresh spermatozoa per insemination dose. Increasing the number of spermatozoa from 250 x 106 to 500 x 106 per insemination dose did however improve the lambing rate (p<0.1). Pregnancy control by transrectal ultrasound (7 MHz) at 35 ± 2 days was at least as reliable as a teaser ram.
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pp 475-480
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71 (1) 63-67

Titel: 
ISOSPOROSIS IN SUCKLING PIGLETS IN FLANDERS
Auteur(s): 
J. Leten, K. Smets, E. Claerebout, H.-C. Mundt, H.C. Heesen, J. Vercruysse
Samenvatting: 
Isospora suis causes neonatal coccidiosis in piglets. Clinical signs include diarrhoea in 5 to 14-days-old piglets. The morbidity is high and the mortality low to moderate. Up until now, no I. suis prevalence data have been available in Belgium. Therefore, 30 swine herds (10 litters/farm) were sampled in Flanders during the summer of 2000 to determine the prevalence and the importance of I. suis. On 24 of the 30 examined farms (80%) oocysts were present, with an average of 33% of the litters infected. On 4 of the 5 farms with obvious problems of diarrhoea an average of 47 % of the litters was infected. However, diarrhoea was not significantly correlated with the presence of I. suis infection or with the percentage of infected litters. The cleaning of the farrowing crate and the treatment of the sows (at parturition) with sulfonamids had no apparent effect on the occurrence of the infection, but the disinfection of the farrowing crates however had a significant effect on the percentage of infected litters.
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pp 63-67
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71 (4) 268-273

Titel: 
SAMPLING OF THE OVINE BRAIN STEM FOR TSE-TESTING
Auteur(s): 
C. Jacobs, A. Gabriel, P. Simoens
Samenvatting: 
Since April 1, 2002, the European Union has extended the TSE testing in ruminants by including sheep and goats in the survey studies. Like for the bovine species, the diagnostic protocol is performed on a tissue sample of the brain stem collected at the level of the obex. Morphological differences of the brain stem of sheep and goats, in comparison with the bovine species, have required some adjustments to the sampling method and equipment. In this study, the technical aspects of sampling and a number of morphometrical parameters of the ovine brain stem are described. The essential differences, compared to the bovine species, concern the dimensions and the more pronounced caudal narrowing of the brain stem.
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pp 268-273
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71 (4) 256-267

Titel: 
A NEW NEUROLOGICAL EXAMINATION METHOD IN THE HORSE: MAGNETIC TRANSCRANIAL STIMULATION
Auteur(s): 
H. Nollet, P. Deprez, K. Vanschandevijl, L. Lefere, F. Verschooten, L. Van Ham, R. Ducatelle, G. Vanderstraeten
Samenvatting: 
In this paper we report the application of a new, non-invasive, objective, painless and sensitive neurological test method in the horse. After transcranial stimulation of the motor cortex of the brain, using a changing magnetic field, the evoked potentials are registered electromyographically and measured. The technique was first applied in eightteen normal horses in order to obtain reference values. Thereafter, the usefulness of transcranial magnetic stimulation was investigated in eight neurological cases, as a complementary and objective diagnostic method in the neurological examination of the horse.We conclude that magnetic transcranial stimulation can put the diagnostic examination of horses with abnormal gait into a new perspective. The method is complementary the clinical neurological examination. In cases of severe ataxia the magnetic potentials determined in the present study correlated well with the clinical signs. In horses with subtle signs of ataxia, or when the nature of the affection as a purely orthopedic problem is not clearly evident, the lesions along the motor tracts can be assessed adequately, even in acute cases. In these cases the neurological lesions can be located with certainty, thus allowing the use of more specific ancillary tests (radiography, serum biochemistry, etc.). A supplementary advantage is that by measuring the onset latency and amplitude, an evolution in time can be followed objectively.
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pp 256-267
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71 (4) 249-255

Titel: 
WINDSUCKING IN THE HORSE: RESULTS OF SURGICAL TREATMENT: A RETROSPECTIVE STUDY (1990-2000)
Auteur(s): 
K. Brouckaert, M. Steenhaut, A. Martens, L. Vlaminck, F. Pille, L. Arnaerts, F. Gasthuys
Samenvatting: 
Thirty windsucking horses were admitted in the last eleven years (1990–2000) for a surgical intervention at the Department of Surgery and Anesthesiology of Domestic Animals of the Faculty of Veterinary Medicine in Ghent. Twenty-one horse owners answered the follow-up questionary. The results after surgery (modified operation of Forssell) were good in 71.4% of the cases, with little postoperative complications. There was no predisposition for a certain age or sex although thoroughbreds were more often referred for surgical treatment. The etiology of this stereotypy and its treatments are discussed.
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pp 249-255
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71 (5) 348-355

Titel: 
BOVINE ENZOOTIC BRONCHOPNEUMONIA
Auteur(s): 
B. Catry, J.L.J. Govaere, L. Devriese, H. Laevens, F. Haesebrouck, A. de Kruif
Samenvatting: 
Eighty tracheal washings were collected from 80 untreated calves of 28 herds in Flanders, suffering from acute respiratory distress. Thirty-five (44%) of the samples were bacteriologically positive. Identification of the strains resulted mainly in Pasteurella multocida (68%). Other bacteria were Mycoplasma bovirhinis (14%), Mannheimia haemolytica (11%), Mycoplasma bovis (11%), Haemophilus somnus (3%), and α-hemolytic streptococci (3%). In 14 % of the positive samples more than one pathogen was isolated. Mostly Mycoplasma spp. were involved. Antimicrobial resistance patterns of the strains identified as Pasteurella multocida (n = 24; 14 farms) revealed 100% susceptibility for amoxicillin+clavulanate, enrofloxacine, ceftiofur and florfenicol, 96% susceptibility for tetracycline and ampicillin, and 92 % susceptibility for the combination trimethoprim/sulphonamides. In one strain only (4%) resistance against two antimicrobials was found. In contrast with surveys in neighbouring countries, the prevalence of Pasteurella multocida in bovine respiratory disease was high in Belgium and antimicrobial resistance was low. Possibly, these differences can be explained partially by the fact that in the neighbouring countries necropsy strains prevailed in the collections studied.
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pp 348-355
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