 Enquête sur l'infestation du renard roux (Vulpes vulpes) par Echinococcus multilocularis en province de Luxembourg (Belgique); ; Losson, Bertrand  et alin Annales de Médecine Vétérinaire (1992), 136 Detailed reference viewed: 14 (0 ULg)Haematological and Immunological Response of Unrestrained Cattle to Psoroptes Ovis, the Sheep Scab MiteLosson, Bertrand ; ; in Research in Veterinary Science (1988), 44(2), 197-201 Cows were infected twice with 600 and 500 nymphs and adults of a bovine strain of Psoroptes ovis with a nine-week interval. The haematological response and the non-specific mitogen- and antigen-induced ... [more ▼] Cows were infected twice with 600 and 500 nymphs and adults of a bovine strain of Psoroptes ovis with a nine-week interval. The haematological response and the non-specific mitogen- and antigen-induced responsiveness of the peripheral blood lymphocytes of the animals was followed. Dermal reactivity to P ovis antigen injection was studied five weeks after reinfection. After the first infection with 600 mites none of the infected animals developed clinical psoroptic mange but a leucocytosis developed, contributed to primarily by an eosinophilia and by a slight lymphocytosis. Antigen-induced lymphocyte blastogenesis was used to measure the antigen-sensitive cell population in peripheral blood and this population showed a maximum increase 10 days after infection; however, antigen-sensitive cells remained above normal levels until reinfection. Upon challenge infection with 500 mites the infected animals showed an immediate hypersensitivity type reaction with a marked pruritus, scratching and exudation. Thereafter the lesions healed rapidly and none of the animals developed clinical mange. This clinical reaction was accompanied by a secondary eosinophilia but no change was apparent in the other blood elements. A marked increase in the blastogenic response of the peripheral blood lymphocytes was also apparent and this peaked three weeks after challenge. Following the intradermal injection of P ovis antigen there was an immediate swelling of the injection site in all infected and control animals and skin thickness was maximal one hour after injection. Thereafter there was a clear distinction in dermal reactions between P ovis infected and control animals; after 48 hours reactions were not seen in the control animals while marked dermal reactions were still present in the P ovis infected group. [less ▲] Detailed reference viewed: 7 (0 ULg) Efficacy of ivermectin and levamisole against immature Dictyocaulus viviparus in cattle; Lekeux, Pierre ; in Veterinary Record : Journal of the British Veterinary Association (1986), 118 Eighteen calves aged approximately three months were each infected with Dictyocaulus viviparus larvae at a rate of 30/kg bodyweight. Seven days later they were randomly allocated to three groups of six ... [more ▼] Eighteen calves aged approximately three months were each infected with Dictyocaulus viviparus larvae at a rate of 30/kg bodyweight. Seven days later they were randomly allocated to three groups of six animals. Calves of group 1 were controls. Calves of group 2 were given levamisole at a dose rate of 10 mg/kg and calves of group 3 were given ivermectin at a dose rate of 200 micrograms/kg. The anthelmintic activity of these two drugs was compared using clinical, functional, parasitological and pathological parameters. The results showed that the efficacy of ivermectin, given at a therapeutic dose, against immature D viviparus was higher than that of levamisole, given at double the recommended dose [less ▲] Detailed reference viewed: 39 (3 ULg)Studies on conditions necessary for Bovine herpesvirus 1 reactivationThiry, Etienne ; ; et alin Pastoret, Paul-Pierre; Thiry, Etienne; Saliki, J. (Eds.) Immunity to herpesvirus infections of domestic animals (1985) Detailed reference viewed: 4 (0 ULg) |
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