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Experimental Toxocara canis infection in cynomolgus macaques (Macacafascicularis)
1983
Glickman, L.T. | Summers, B.A.
Toxocara canis, cynomolgus macaques (exper.), visceral larva migrans, hematologic and serologic changes, neurologic signs, diminished growth rates, diagnostic antibody titers in enzyme-linked immunosorbent assay, severe granulomatous hepatitis and encephalomyelitis, no ocular lesions, basis for clinical interpretation and diagnosis in humans
Показать больше [+] Меньше [-]Haemonchus contortus from the vaal ribbok, Pelea capreolus, and the bontebok, Damaliscus dorcas dorcas, in the Bontebok National Park
1983
Boomker, J. | Horak, I.G. | Gibbons, L.M. | De Vos, V.
Haemonchus contortus with exceptionally long spicules recovered from vaal ribbok and bontebok, measurements
Показать больше [+] Меньше [-]Studies on the parasites of zebras. 1. Nematodes of the Burchell's zebra in the Kruger National Park
1983
Scialdo-Krecek, R.C.
Nineteen species of gastro-intestinal nematodes were recovered from 10 Burchell's zebra. These include: Cyathostomum alveatum, C. montgomeryi and C. tetracanthum; Cylicocyclus auriculatus, C. gyalocephaloides, C. insigne and C. triramosus; Cylicodontophorus schürmanni and Cylicodontophorus n.sp., Cylicostephanus bidentatus, C. calicatus and C. minutus; Poteriostomum ratzii, Craterostomum acuticaudatum, Triodontophorus minor, Habronema majus, H. muscae, H. zebrae, and Draschia megastoma, as well as Cylindropharynx spp. The highest burdens encountered were those of Cylicocyclus triramosus (159 491), Cylindropharynx (19 875), Cylicocyclus auriculatus (15 792), Cylicostephanus calicatus (16 658) and Cyathostomum tetracanthum (13 723). The nematodes consistently present in all zebras were: Cylicostephanus calicatus, Cylindropharynx spp. and Draschia megastoma.
Показать больше [+] Меньше [-]A bioassay technique for the pheromone emitted by Amblyomma hebraeum males
1983
Rechav, Y.
Amblyomma hebraeum, percentage and rate of female attachment to rabbits was higher (except shortly after release of females) around feeding males than in areas previously treated with extract of fed males, effect of elapsed time and of number of males vs. equivalent extract on attachment values, results prove bioassays to be valid for component and extract-equivalent assessment
Показать больше [+] Меньше [-]Demonstration of Anaplasma marginale in hemolymph of Dermacentor andersoni by animal inoculation and by fluorescent-antibody technique
1983
Kocan, K.M. | Oberst, R.D. | Ewing, S.A. | Hair, J.A. | Barron, S.J.
Dermacentor andersoni, demonstration of Anaplasma marginale in hemolymph by animal inoculation and fluorescent antibody technique
Показать больше [+] Меньше [-]Pathogenesis of Trypanosoma brucei infection in deer mice (Peromyscus maniculatus): Light and electron microscopic studies on erythrocyte pathologic changes and phagocytosis
1983
Anosa, V.O. | Kaneko, J.J.
Trypanosoma brucei in Peromyscus maniculatus, erythrocyte pathologic changes and phagocytosis, light and electron microscopic studies
Показать больше [+] Меньше [-]Effect of gastrointestinal parasite infection in calves on the preparation of carrier erythrocyte ghosts and on erythrocyte survival
1983
DeLoach, J.R. | Fincher, G.T.
gastrointestinal nematodes in calves (exper.) causing severe anemia, effect on preparation of carrier erythrocyte ghosts and erythrocyte survival
Показать больше [+] Меньше [-]Fate of aflatoxins in tissues, fluids, and excrements from cows dosed orally with aflatoxin B1
1983
Stubblefield, R.D. | Pier, A.C. | Richard, J.L. | Shotwell, O.L.
A study was conducted to determine aflatoxins in tissues and non-tissues of 2 Holstein cows given oral doses of 0.35 mg of purified aflatoxin B1/kg of body weight/day for 3 consecutive days. Cow 1 was slaughtered 24 hours after the 3rd dose, and cow 2, after day 3, was fed aflatoxin-free rations for 7 additional days before slaughter. Tissue samples of brain, gallbladder and bile, heart, intestine, kidney, liver, lung, mammary gland, skeletal muscle, spleen, supramammary lymph nodes, thymus, and tongue, and nontissue samples of blood, feces, milk, rumen content, and urine were examined. Aflatoxins B1 and M1 were found in all samples of cow 1, except the thymus. Kidney, liver, and mammary gland had the highest concentrations of total aflatoxins (57.9, 13.2, and 25.1 ng/g, respectively), with the aflatoxin M1 concentration 40 times more than the aflatoxin B1 level in kidney. Aflatoxin residues were present (0.02 to 0.11 ng/g) only in kidney, liver, and intestine of the tissues from cow 2 (fed aflatoxin-free feed for 7 additional days). Aflatoxin B1 was not present in nontissue samples, but aflatoxin M1 (0.10 and 1.5 ng/ml) was found in the last milk and urine samples from the same cow. Urine assays are a possible way to monitor the presence of aflatoxin residues in meat tissues.
Показать больше [+] Меньше [-]Notes on African Haemaphysalis ticks. XV. H. (Rhipistoma) norvali sp. n., a hedgehog parasite of the H. (R.) spinulosa group in Zimbabwe (Acarina: Ixodidae)
1983
Hoogstraal, H. | Wassef, H.Y.
The male, female, nymph, and larva of Haemaphysalis (Rhipistoma) norvali sp. n., are described and compared with other members of the H. (R.) spinulosa group. Adult H. (R.) norvali parasitize the southern African hedgehog, Erinaceus frontalis Smith, in Matabeleland, Zimbabwe. Immatures were reared on a laboratory rabbit.
Показать больше [+] Меньше [-]Further tests of activity of levamisole on Ostertagia ostertagi in dairy calves with notes on overwinter survival of gastrointestinal helminths on pasture
1983
Lyons, E.T. | Drudge, J.H. | Tolliver, S.C. | Hemken, R.W. | Button, F.S.,jr
mature Ostertagia ostertagi and immature Ostertagia spp. in naturally infected dairy calves, activity of levamisole; overwinter survival on pasture of gastrointestinal helminth free-living stages as found in necropsy of previously helminth free calves placed on pasture in April: Kentucky
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