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Query: UMLS:C0851341 (infestation)
 10,121 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A survey of warble-infested 'fat' cattle in 57 selected livestock markets in Great Britain was carried out during June 1972 and during May each year from 1973 to 1984. The annual total number of cattle inspected varied from 41,587 to 60,481. The level of infestation increased from 22.3 per cent in 1972 to 38.0 per cent in 1976 and then declined slightly to 34.3 per cent in 1978. Following the introduction of legislation and the warble fly eradication campaign in 1978 there was a rapid decrease to 8.6 per cent infestation by 1979 and by 1984 the level was less than 0.02 per cent.
Vet Rec 1985 Sep 14
PMID:Survey of the prevalence of warble fly larvae in market cattle in Great Britain. 406 May 22

Twenty-two calves between one and 20 days old were infected orally or by contact with cryptosporidia. Calves were maintained as either specific pathogen free, colostrum fed or sucking and were inoculated with either a bacteria free or a contaminated cryptosporidium preparation. Enteritis was characterised by depression, anorexia and diarrhoea and cryptosporidium oocysts were excreted during the clinical course of the illness. In the initial stages of the disease, cryptosporidium infestation was found throughout the small intestine; in the later stage the large intestine was also affected. Villous atrophy and fusion was present at small intestinal sites infected with cryptosporidia and lactase levels were depressed. No lesions were seen in infected large intestinal mucosa. Although the incubation period was longest (five to seven days) in calves infected by contact, there were few differences in the clinical course of disease or the pathological findings between any of the infected calves.
Vet Rec 1983 Feb 05
PMID:Experimental cryptosporidiosis in calves: clinical manifestations and pathological findings. 622 May 9

Histopathology on portions of lung collected from 34 red deer (Cervus elaphus) and 15 roe deer (Capreolus capreolus) between 1977 and 1981 revealed evidence of lungworm infestation in 16 red and 14 roe deer. In the red deer, Dictyocaulus species, and the developmental stages of another parasite, believed to be Elaphostrongylus cervi, were involved. Dictyocaulus also affected the roe deer, but in them the major lesions were associated with protostrongylids. Exudative bronchopneumonia, including two cases of fungal infection, was predominantly a problem of red deer under seven months of age. Between the age of four and seven months, parasites frequently accompanied this change. Other conditions encountered were pulmonary congestion, tuberculosis and granulomata of unknown cause.
Vet Rec 1983 Feb 26
PMID:Histopathological findings in the lungs of Scottish red and roe deer. 622 May 10

A severe outbreak of psoroptic mange in beef cattle is described. Up to half the animals in some groups were extensively affected and debilitated. Performance was poor with days to slaughter weight increased. Ivermectin was the most effective form of treatment. The possible origin of the infestation and the ways of controlling the condition are discussed.
Vet Rec 1984 Sep 01
PMID:Outbreak of psoroptic mange in cattle. 654 26

The sheep body louse Damalinia ovis is a potentially serious problem affecting the value of the fleece and possibly causing reduced weight gains. Control has been based on the dipping or showering of sheep using insecticidal oil in water emulsions. The results using a pour-on formulation of the synthetic pyrethroid cypermethrin to control louse infestation are reported. Application rates of 5 mg/kg or more gave 99 to 100 per cent control.
Vet Rec 1983 Sep 17
PMID:Cypermethrin pour-on for control of the sheep body louse (Damalinia ovis). 663 84

Fenbendazole was used to treat nematode infestations (Ascaridia species and Capillaria species) in 230 birds of six orders and 38 different species. Using a single dose of 100 mg/kg bodyweight initial treatment eliminated parasitic nematodes from 221 birds. A further course of treatment at a dose rate of 30 mg/kg daily for seven days eliminated the infestation from the remaining nine birds.
Vet Rec 1983 Apr 30
PMID:Efficacy of fenbendazole against nematodes of captive birds. 686 6

A nationwide survey was conducted of the relative distribution and life cycles of the two cattle warble fly species Hypoderma bovis and H lineatum to complement information derived from examining livestock at markets and hide damage at slaughter. Warble fly larvae were collected from cattle at abattoirs in 59 counties in England, Wales and Scotland from February 1 to June 30, 1979. H bovis was commonest in all areas except the Western isles of Scotland. There was no evidence of cross-infestation between cow and deer warble species.
Vet Rec 1981 Jan 24
PMID:Distribution of cattle warble flies in Britain: a larval survey. 719 11

Eighty-five pigs were artificially infected with Hyostrongylus rubidus, Oesophagostomum species and Ascaris suum. On days 2, 10, 20 or 51 after infection groups of six were treated with oxfendazole premix in food at various dose rates. Subsequently the pigs were slaughtered for comparative worm counts to be made in treated and control animals. The efficacy of treatment against hyostrongylus worms of increasing age was 68, 57, 99.8 and 100 per cent after a 3 mg per kg dose, 75, 75, 99.8 and 100 per cent after a 4.5 mg per kg dose and 81, 83, 99.8 and 100 per cent after a 6 mg per kg dose. In the case of Oesophagostomum species the corresponding figures were 78, 100, 100 and 100 per cent efficacy after a 3 mg dose, 93, 100, 100 and 100 per cent after a 4.5 mg per kg dose and 91, 99, 100 and 100 per cent after a 6 mg per kg dose. Ascaris infestation established too poorly for significant results to be obtained. It is concluded that a dose rate of 4.5 mg oxfendazole per kg body-weight should give practical control of Hyostrongylus and Oesophagostomum species in pigs.
Vet Rec 1981 Jan 03
PMID:Anthelmintic activity of oxfendazole in pigs. 723 74

Permethrin, applied by knapsack sprayer or spray arch, was used to control flies on cattle in two dairy herds in the United Kingdom. The spray washes were applied at nominal rates of 0.5 litre of 0.1 per cent permethrin per animal and 1.0 litre of 0.05 per cent permethrin per animal respectively. The individual milk yields of two groups of cows were recorded before and after treatment. In both cases there was a significant increase in milk yield after treatment. The mean yield per cow per day during the trial period rose by 0.8 kg in one group and by 1.0 kg in the other group, after treatment. Assessments were made throughout the trial of the level of infestation of Stomoxys calcitrans, Haematobia irritans and non-biting flies.
Vet Rec 1980 Feb 09
PMID:A field trial to determine the effect of fly control using permethrin on milk yields in dairy cattle in the UK. 744 28

The transmission of Oesophagostomum species in sows kept on pastureland on a commercial farm was studied over a period of almost two years. Worm eggs were excreted on to the pasture continuously but they gave rise to infective larvae during the summer and autumn only when climatic conditions were conducive to development. The output of worm eggs was maintained at a moderate level and the numbers of adult worms in culled sows rarely exceeded more than a few thousand but some sows carried heavy infestations of immature worms. No direct relationship between the level of the herbage infestation and the numbers of adult worms and the output of worm eggs was apparent. The use of anthelmintics had only a transitory effect on the level of infection and an alternative system of anthelmintic treatment is suggested.
Vet Rec 1980 Sep 06
PMID:Transmission of Oesophagostomum spp among sows at pasture. 744 35


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