Results 191 to 200 of about 31,926 (241)

Antigens of gastrointestinal nematodes

Transactions of the Royal Society of Tropical Medicine and Hygiene, 1986
Nematodes occupying the gastrointestinal (GI) tract of man shed an as yet undefined array of chemicals into their environment. To combat effectively the potentially debilitating disease caused by infection with these organisms we must (a) define the parasite products chemically, (b) determine their ability to induce protective immunity (or to counter a
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Gastrointestinal Nematodes, Diagnosis and Control

Veterinary Clinics of North America: Food Animal Practice, 2018
Disease caused by nematodes in the gastrointestinal tract of cattle is primarily economic and the effect of treatment is cattle grow larger faster because of increased feed intake. The disease, control measures, and drugs used must be focused on different ages and environments.
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Incidence of Gastrointestinal Nematodes in Kansas Cattle

American Journal of Veterinary Research, 1973
SUMMARY A survey of bovine gastrointestinal nematodes was conducted during 1969 to 1971 on herds totalling more than 10,000 cattle of which 10% were individually sampled. On the basis of egg counts and differentiation, cultured infective larvae, and cultivation of parasitic stages, the following results were obtained: Of 1,032 fecal samples 67.3% were ...
S E, Leland, H K, Caley, R K, Ridley
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Modelling of parasite populations: gastrointestinal nematode models

Veterinary Parasitology, 1994
This paper surveys models of nematode parasites of veterinary importance. A distinction is drawn between generic models which are usually simple formulations applicable to whole classes of parasite and specific models which are often more complex and designed to address questions concerning a particular species.
G, Smith, B T, Grenfell
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Acetylcholinesterases of Gastrointestinal Nematodes

2000
Vertebrate cholinesterases (ChEs) are broadly classified into two families based on their substrate specificity. Acetylcholinesterases (AChEs) terminate transmission of neuronal impulses by rapid hydrolysis of acetylcholine (ACh), and are therefore primarily associated with synaptic contacts in nerves and muscle (Fig. 1).
Murray E. Selkirk, Ayman S. Hussein
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Vaccines against gastrointestinal nematode parasites of ruminants

Parasitology Today, 1991
A consequence of intensive livestock production is an increase in the incidence and impact of gastrointestinal (GI) parasites. Farmers have sought to redress this shift in the natural host-parasite relationship by chemotherapy. However, with the widespread development of resistance to anthelmintics and the current impetus for sustainable agricultural ...
D L, Emery, B M, Wagland
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Doramectin efficacy against gastrointestinal nematodes in pigs

Veterinary Parasitology, 1996
Four controlled trials with growing pigs were performed to determine efficacy of doramectin against natural and induced populations of nematodes. In Trial 1 (T1), 20 pigs with natural infections were assigned to one of two like groups on the basis of weight, sex and worm egg counts.
T B, Stewart, M C, Fox, S E, Wiles
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Immunological control of gastrointestinal nematode infections

Veterinary Parasitology, 1997
Control of nematode parasitism by an active manipulation of the host immune response has been a goal of veterinary and medical parasitologists for decades. The reality of achieving this goal has been questioned vigorously and demonstrations of the feasibility of using immunological control under field conditions are minimal.
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Efficacy of Albendazole Against Gastrointestinal Nematodes of Cattle

American Journal of Veterinary Research, 1976
SUMMARY Forty-five calves with artificial and pasture-acquired nematode infections were medicated with albendazole at dose levels of 0, 2.5, 5.0, or 10 mg/kg of body weight. A dose level of 2.5 mg/kg removed at least 99% of adult Trichostrongylus axei, Trichostrongylus colubriformis, Cooperia oncophora, and Bunostomum phlebotomum. Burdens of Haemonchus
V J, Theodorides, T, Nawalinski, J F, Freeman, J R, Murphy   +3 more
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Gastrointestinal nematodes, trace elements, and immunity

The Journal of Trace Elements in Experimental Medicine, 2003
AbstractThe exploration of the scientific literature on the interrelationship among trace elements, gastrointestinal nematodes, and their requisite Th2 immunity demonstrates extensive literature but regrettably, research remains inadequate and sparse, with far fewer studies having investigated the interrelationship among trace elements and host ...
Kristine G. Koski, Marilyn E. Scott
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