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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.
显示更多 [+] 显示较少 [-]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.
显示更多 [+] 显示较少 [-]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
显示更多 [+] 显示较少 [-]The prevalence of helminth and arthropod parasites of warthog, Phacochoerus aethiopicus, in South West Africa/Namibia
1983
Horak, I.G. | Biggs, H.C. | Hanssen, T.S. | Hanssen, R.E.
helminths and arthropods collected from warthogs at monthly intervals, prevalence, rainfall and temperature data, clear patterns of seasonal abundance could be determined only for Physocephalus sexalatus and Haematopinus phacochoeri
显示更多 [+] 显示较少 [-]Efficacy of fenbendazole against tpaeworms in calves
1983
Ciordia, H. | Stuedemann, J.A. | McCampbell, H.C.
Moniezia sp. in naturally infected calves on pasture, fenbendazole efficacy at three dosage levels: Georgia
显示更多 [+] 显示较少 [-]Safety of fenbendazole in swine
1983
Hayes, R.H. | Oehme, F.W. | Leipold, H.
fenbendazole safety tested in pigs, significant gross or histopathologic lesions not found
显示更多 [+] 显示较少 [-]Protection against Pasteurella pneumotropica during infection with Angiostrongylus cantonensis
1983
Laubach, H.E. | Kocan, A.A.
Angiostrongylus cantonensis, infections in specific-pathogen-free rats (lung) provides cross-protective response to infections with Pasteurella pneumotropica
显示更多 [+] 显示较少 [-]Anthelmintic efficacy of ivermectin against gastrointestinal nematodes in calves
1983
Benz, G.W. | Ernst, J.V. | Crawley, R.R.
gastrointestinal nematodes, calves (exper.), efficacy of ivermectin given subcutaneously or given orally as drench or paste
显示更多 [+] 显示较少 [-]Flubendazole: Dose range and efficacy studies against common internal parasites of swine
1983
Bradley, R.E. | Guerrero, J. | Becker, H.N. | Michael, B.F. | Newcomb, K.
common internal helminths of swine, flubendazole, dose range and efficacy studies
显示更多 [+] 显示较少 [-]Transmission of equine cyathostomes (Strongylidae) in central Texas
1983
Craig, T.M. | Bowen, J.M. | Ludwig, K.G.
strongyles (predominantly cyathostomes), mares and their foals, dynamics of transmission studied on pastures previously free of parasites, fecal egg counts beginning day of parturition and based on time of year, relationship between weather conditions and pasture larval counts, necropsy findings in two foals: Texas
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