Showing papers in "Veterinary Parasitology in 1983"

TL;DR: An excretory--secretory (ES) antigen was used in a serodiagnostic enzyme-linke immunosorbent assay (ELISA) for swine trichinosis and was effective in eliminating all false-positive reactivity in sera from farm-raised hogs.

TL;DR: By using the Pepsin digestion technique, or feeding tissues to Toxoplasmasmas-free cats, it was demonstrated that T. gondii encysted in bovine tissues as early as 11 DPI and persisted as late as 287 DPI.

TL;DR: Triclabendazole (Fasinex), a new fasciolicide of the benzimidazole group, was tested in sheep and goats and was well tolerated, whereas side effects occurred in one trial with niclofolan (Bilevon-M) (3 mg kg-1).

TL;DR: It is suggested that the most effective control of gastro-intestinal nematodes in domestic sheep and goats of the Sahelian zone of Senegal can be achieved by a critical treatment at the end of dry season when the EPG starts to increase, and when hypobiosis is supposed to be terminating.

TL;DR: Twenty-five known anthelmintic compounds were evaluated in vitro against the highly motile exsheathed non-feeding third-stage of Haemonchus contortus larvae, and the inactivity of the new benzimidazoles made this in vitro system unsuitable as a routine screening tool.

TL;DR: A standardised assay was developed to measure anti-F1 antibodies and was reproducible and able to detect antibodies by 3 weeks post-infection in experimentally-infected calves.

TL;DR: The interaction, in vitro, between bovine peripheral blood lymphocytes and sporozoites of Theileria annulata (Ankara) was studied by light and electron microscopy.

TL;DR: An indirect fluorescent antibody assay (IFA) was developed using Strongylus vulgaris third stage larvae (L3) as antigens and Observations using the IFA indicate that a species-specific antibody response to S. vulgaris L3 develops in S. Vulgaris-infected ponies and that some surface L3Antigens are shared by adult worms.

TL;DR: Theileria annulata was experimentally transmitted to cattle on two occasions by the two-host tick Hyalomma marginatum rufipes, but since the immature stages of this species normally feed on birds, this tick is unlikely to be an important vector in the field.

TL;DR: The efficacy of morantel tartrate when administered on a continuous basis directly into the rumen/reticulum of cattle, either by a cannula or from a specially designed device, was evaluated against gastrointestinal parasites under laboratory conditions.

TL;DR: Calves infested with Psoroptes ovis for the first time (naive) or previously infested calves were examined for serum antibody activity to P. ovis antigens by enzyme-linked immunosorbent assay (ELISA) to determine the temporal appearance of specific serum antibodies.

TL;DR: It was confirmed that fed ticks will be more suitable for sporozoite production for infection of cattle and production of stabilates.

TL;DR: There was little selective inhibition of surface shedding without a significant loss of motility in juvenile F. hepatica and antigens with high ELISA titres inhibited surface fluorescence of the parasite suggesting that the ELISA was detecting surfaceAntigens as well as other parasite metabolic products.

TL;DR: Pasture larval counts and worm counts demonstrated that the group grazed after the sheep acquired considerably smaller burdens of nematodes of the subfamilies Cyathostominae and Strongylinae, but considerably higher burdens of Trichostrongylus axei than the group which remained on the same pasture.

TL;DR: The seasonal pattern of C. bovis infestation in feral goats was similar to that seen in sheep and cattle and the prevalence of infestation reached 100% in July and August (winter) and declined to 27% in February and March (summer).

TL;DR: Pure strains of BabesIA bovis, Babesia bigemina and Anaplasma marginale were isolated from cattle infected with all 3 species as well as Theileria sp.

TL;DR: Temperature had a significant effect on the proportion of free-living females and infective larvae of Strongyloides papillosus developing from faecal culture, and the critical period by which the course of development has been fixed occurs between 4 and 5 h at 30 degrees C, butbetween 4 and 24 h at 20 degrees C.

TL;DR: The presence of the high toxoplasmosis IFA titers in the sera of dogs seems to be associated with other disease conditions, and stress such as joint dislocations, fractures, helminth parasitism, and concomitant bacterial and viral infections, etc.

TL;DR: Immunoprecipitates derived from crossed immunoelectrophoresis of Babesia bovis culture supernatant fluid against a polyspecific anti-B.

TL;DR: A hypothesis is propounded that Theileria parasites, consequent on interiorization, provoke the blastoid transformation and the formation of annulate lamellae through the influence of components of their genomic material on host cell deoxyribonucleic acid (DNA) and that the annulata represent a species of messenger ribonucleics acid (mRNA) and serve as a monitoring device for the schizont, facilitating the accurate timing of the host cell cyclical events.

TL;DR: Although morphological integrity was completely restored after anthelmintic treatment, the persistent low activity of brush border alkaline phosphatase coupled with the enzymological findings in untreated, infected animals suggests that recovery of the full functional capability of the intestinal mucosa may take longer.

TL;DR: It is hoped that the model presented will show the potential of formulating a system for predicting tick activity and could be used to enhance the control of tick-transmitted diseases.

TL;DR: Results demonstrated that administration of the bolus to calves at the time of turnout onto spring pastures was most effective both in controlling parasites within the cattle themselves and in reducing the level of parasite contamination.

TL;DR: The major helminth parasites found in wild, semi-wild and golden Sovereign stock guinea fowl were Heterakis gallinarum, Ascaridia galli, Capillaria caudinflata, Raillietina tetragona and R. echinobothrida, while Eimeria species was the most important gastro-intestinal protozoan parasite.

TL;DR: In this paper, immunoglobulins raised against Sarcocystis miescheriana (SMSM) antigens were incorporated into double-antibody sandwich immuno-enzymatic assays, which were firstly quantitated and then used to detect soluble SRS in the sera of experimentally infected pigs and mice.

TL;DR: The drug was found to be highly effective against T. vivax infection in sheep and cattle in which periods of protection ranging from 118 to 195 days were achieved.

TL;DR: It thus appears that the macrophage activator was induced from immune spleen cells in response to the stimulation by the antigen, and the parasiticidal activity of normal macrophages could not be enhanced.

TL;DR: It appears that mortality is independent of the age of the eggs and that there is a marked seasonality within the period of time considered.

TL;DR: The results indicate a high antiparasitic activity of closantel against larval stages of Gasterophilus intestinalis and S. vulgaris, as well as against adult S. edentatus, Anoplocephala perfoliata and Triodontophorus spp.

TL;DR: The efficacy of the morantel sustained release bolus system for the control of parasitic gastroenteritis in calves was evaluated in the Netherlands and all the tracer calves placed on the paddocks grazed by bolus-treated calves survived until the intended slaughter date.