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  • 1
    Electronic Resource
    Electronic Resource
    The disposition kinetics of albendazole following the administration of single and divided doses to cattle and buffalo (1998)
    Springer
    Veterinary research communications 22 (1998), S. 87-96 
    Details
    ISSN: 1573-7446
    Keywords: anthelmintic ; albendazole ; buffalo ; cattle ; pharmacokinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Concentrations of albendazole sulphoxide and its sulphone metabolite in plasma in cattle and buffalo were measured by high-performance liquid chromatography after single and divided intraruminal administration of albendazole at the recommended nematocidal and fasciolicidal dose rates of 7.5 and 15.0 mg/kg body weight, respectively. No significant differences in the plasma concentrations of the metabolites or their pharmacokinetic parameters were observed between cattle or buffalo at either dose rate. Pharmacokinetic analysis and the disposition curve of the metabolites indicated increased uptake of the drug in both cattle and buffalo when the same total amount of the drug was given in divided doses compared to a single dose (p〈0.05). The divided dose schedules of administration could possibly be exploited to extend the life of the available benzimidazole anthelmintics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006023328617
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The Pharmacokinetics and Efficacy of Long-Term Low-Level and Split-Dose Administration of Albendazole Through In-Feed Formulations against Ovine and Caprine Parasitic Gastroenteritis (1998)
    Springer
    Veterinary research communications 22 (1998), S. 467-477 
    Details
    ISSN: 1573-7446
    Keywords: albendazole ; anthelmintic ; goat ; in-feed ; metabolite ; pharmacokinetics ; sheep
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Two trials were conducted against natural and experimentally induced parasitic gastroenteritis in sheep and goats using an in-feed formulation of albendazole to evaluate its therapeutic and prophylactic efficacy. In the first trial, albendazole was incorporated in feed pellets to deliver an average daily dose of 0.7 mg/kg body weight in order to evaluate its prophylactic efficacy. In the second trial, feed pellets were offered to deliver an average total dose of 8.0 mg/kg body weight in two equal split doses in order to evaluate its curative efficacy. Sustained plasma concentrations of the active compound, albendazole sulphoxide, and its metabolite albendazole sulphone, sufficient to prevent establishment of infection, were achieved when the animals were allowed to feed on medicated pellets for 10 consecutive days. The bioavailability of the metabolites of albendazole following the administration of a therapeutic dose in two split doses of the in-feed formulation was sufficient to remove established adult nematodes. The concentrate feed pellets could be used for self-medicating small ruminants for therapeutic use as well as for prophylaxis based on their strategic use appropriate to the epidemiology of the parasitic disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006127132161
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Comparative Disposition Kinetics of Albendazole in Sheep Following Oral and Intraruminal Administration (1998)
    Springer
    Veterinary research communications 22 (1998), S. 545-551 
    Details
    ISSN: 1573-7446
    Keywords: albendazole ; metabolites ; pharmacokinetics ; route of administration ; sheep
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The pharmacokinetics of albendazole was studied in sheep following single oral and intraruminal administration at nematocidal dose rates. The disposition curves of its metabolites indicated increased uptake of the drug in sheep following intraruminal as compared to oral dosing (p〈0.05). The increased bioavailability of benzimidazole anthelmintics given by the intraruminal route could be exploited for optimizing the use of anthelmintic for sustained parasite control in small ruminants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006145820818
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Comparative Anthelmintic Activity of Strategic Sustained Low-level Administration of Albendazole in Feed Pellets Compared to Single Doses of Closantel and Tetramisole against Natural Ovine Parasitic Gastroenteritis (1999)
    Springer
    Tropical animal health and production 31 (1999), S. 193-204 
    Details
    ISSN: 1573-7438
    Keywords: albendazole ; anthelmintic ; closantel ; control ; delivery ; dosage ; Haemonchus contortus ; in-feed ; pharmacokinetics ; sheep ; tetramisole
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The strategic use of single therapeutic doses of closantel, tetramisole or sustained low-level administration of albendazole in feed pellets in controlling naturally acquired parasitic gastroenteritis in sheep was investigated on a farm in semi-arid Rajasthan, India. A total of 303 5- to 6-month-old sheep were divided into three groups. Two groups were dosed with single therapeutic doses of closantel and tetramisole and the third group was given a low-level medication with albendazole through feed pellets for 30 days. Faecal egg counts revealed significantly lower counts (p〈0.001) in the group treated with closantel compared to the other two groups. The faecal egg counts in the group receiving sustained low-level albendazole rose after withdrawal of the medication but remained significantly lower than those in the group treated with tetramisole up to 7 weeks after treatment (p〈0.05). On the other hand, in the group treated with tetramisole, the mean faecal egg count rose from 3 weeks after treatment and remained continuously higher than those in any other group up to 12 weeks after treatment. The closantel-treated group gained more body weight but the first six-monthly greasy fleece yield was greater in the group treated with medicated pellets. During the first 3 months of the experiment, three animals in the group treated with tetramisole died of parasitic gastroenteritis. Following sustained low-level administration of albendazole in feed pellets, the plasma disposition curve of both the sulphoxide and sulphone metabolites reached its plateau level by day 5 and remained almost constant thereafter. The comparative cost-effectiveness of the three treatment regimes during the first 3 months of treatment was best for the group treated with closantel followed by the group treated with medicated feed pellets.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005223025851
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  • 5
    Electronic Resource
    Electronic Resource
    Influence of Diet Type and Pretreatment Fasting on the Disposition Kinetics of Albendazole in Sheep (1999)
    Springer
    Veterinary research communications 23 (1999), S. 229-240 
    Details
    ISSN: 1573-7446
    Keywords: albendazole ; diet ; fasting ; green fodder ; pharmacokinetics ; sheep
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The influence of the quality and quantity of diets on the disposition kinetics of albendazole were studied in sheep in two different experiments. The plasma concentration profiles of albendazole sulphoxide and albendazole sulphone were measured following intraruminal administration of albendazole at 5.0 mg/kg body weight in weaner sheep offered three different diets: 100% green Sorghum spp., 100% dry mature Cenchrus ciliaris hay and a 50:50 mix of these two diets. The peak plasma concentrations and the availability of the albendazole metabolites, as measured by the area under the concentration–time curve, were significantly higher (p〈0.01) in the animals offered exclusively dry fodder compared to other diets. Changing the diet from dry to green fodder resulted in a significantly lower systemic availability of the drug metabolites. It is suggested that a decreased transit time of the digesta in the bowel on the green diet, with its high water content, limited the systemic availability of the drug by reducing the time available for gastrointestinal absorption. An experiment on the influence of different levels of pretreatment fasting on the pharmacokinetics of albendazole revealed significantly higher (p〈0.05) plasma concentrations of the anthelmintically active sulphoxide metabolite from 12 h onwards following administration of the drug in animals subjected to 24 h of pretreatment fasting compared to other groups with pretreatment fasting of 8, 12 or 18 h. The area under the concentration–time curve and the minimum residence time of the drug metabolites were significantly greater (p〈0.05) in animals that had been fasted for 24 h. It is suggested that fasting induces a decrease in the flow of digesta through the gastrointestinal tract of ruminants and prolongs the duration of dissolution of the drug, resulting in enhancement of the absorption of albendazole and of the systemic availability of its metabolites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006201226391
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Screening for Indian Isolates of Predacious Fungi for Use in Biological Control against Nematode Parasites of Ruminants (2000)
    Springer
    Veterinary research communications 24 (2000), S. 55-62 
    Details
    ISSN: 1573-7446
    Keywords: Arthrobotrys oligospora ; biological control ; Duddingtonia flagrans ; nematode larvae ; predacious fungi
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Four isolates of predacious fungi, two each of Arthrobotrys oligospora isolated from a sheep and a male crossbred calf and of Duddingtonia flagrans isolated from a sheep and a female buffalo in western India, were studied for their suitability as biocontrol agents against parasitic nematodes of ruminants, using growth assay, predatory activity, germination potential and ability to survive passing through the ruminants gut as criteria. The study showed that isolates of D. flagrans grew well in artificial media, had encouraging predatory activity, produced profuse chlamydospores that germinated easily at 25°C and could survive passage through the ruminant gut. The ovine isolate of D. flagrans was superior in all respects to the isolate from buffalo and was the most promising candidate for biological control of nematode parasites of ruminants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006377422078
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    Paper (German National Licenses)
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