Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Helminthiasis”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 1,009 records · Page 56Linked to original sources
PubMed1992

Gastrointestinal helminths and lungworms of French dairy goats: prevalence and geographical distribution in Poitou-Charentes.

A study was conducted on 81 dairy-goat farms in western France. Faecal samples were collected once and 31 culled goats were necropsied in order to assess their gastrointestinal and respiratory helminth species, their prevalences and the intensities of infection as well as their geographical distribution in six subregions of the surveyed area. Fifteen species of helminth were recovered. The most frequent were Muellerius capillaris, Trichostrongylus colubriformis and Teladorsagia circumcincta with a prevalence more than 90%. The two latter species represented respectively 50.9% and 30.2% of the total worm burden of the digestive tract. Other prevalent species were Haemonchus contortus, Strongyloides papillosus, Trichuris spp., Moniezia spp. and Dicrocoelium lanceolatum. The occurrence of Dicrocoelium lanceolatum was related to the presence of calcareous or alkaline soils and restricted to the south of the surveyed area. No area at particular risk was defined for the other helminth infections, probably because of the relative homogeneity in climatic and topographic conditions of the six agricultural regions.

Animals↗
PubMed1992

Selection for class II Mhc heterozygosity by parasites in subterranean mole rats.

Mhc organization and polymorphism have previously been studied in the four chromosomal species of the Spalax ehrenbergi superspecies in Israel, serologically, and at the DNA, RFLP and sequence levels of class I and class II genes. Here we demonstrate that the observed heterozygosity of Mhc class II genes P alpha 1 with 11 alleles, and Q beta, with at least 14 alleles, is positively and significantly correlated with infectivities of ectoparasites (gamasid mites) and endoparasites (helminths). Mhc heterozygosity is highest in the most infected area, which is in the most humid-warm region of the superspecies range, or where two zoogeographic regions overlap. We conclude that the evolutionary forces responsible for the Mhc class II two-gene polymorphisms include selection for increased heterozygosity as a defense strategy against ecto- and endoparasite infections.

Animals↗
PubMed1986

Intestinal helminths of cats in the Kainji Lake area, Nigeria.

Six parasitic helminths detected were Ancylostoma sp., Opisthorchis felineus, Toxocara mystrax, Hepaticola hepatica, Taenia sp. and Hydatigera taeniaeformis. The prevalence of H. hepatica, T. mystrax and H. taeniaeformis is associated with rodents hunted by cats, and that of O. felineus with fish fed to cats. The role of cats as primary host and reservoir for these helminths, which could be of zoonotic importance, is briefly mentioned.

Ancylostomiasis↗
PubMed1982

A study of parasitic infections in mammals and birds at the Dublin Zoological Gardens.

The present report deals with the parasitic infections detected on examination of fresh faecal samples of 48 mammals and 4 birds at the Zoological Gardens, Dublin during 1978-79. 1,822 faecal samples were received over the two year period and 171 of these samples contained helminth eggs. Ninety-five percent of these positive findings were confined to the Carnivore and Herbivore groups with the Primates, Marsupials and Avians showing a low level of intestinal parasites.

Animals↗
PubMed1995

Effect of stocking rates and anthelminthic treatments on weight gains in weaned Nellore cattle on improved pasture in the Brazilian cerrado.

The results are presented of 6 years of field trials with weaned Nellore cattle on improved pasture in the midwest of Brazil, using 2 stocking rates and 4 anthelminthic treatment regimes. The most profitable regime included treatments in May, June and September, which yielded an additional 41 and 42 kg of liveweight on the 2 stocking rates. No significant additional gains were obtained by treating during the rainy season, or by treating animals more than 24 months of age. The higher stocking rate (1.8 AU/ha) proved excessive on the improved pasture which deteriorated during the 6 year experimental period, yielding suboptimal liveweight gains.

Animal Husbandry↗
PubMed1979

Effect of anthelmintic treatment on the performance of Awassi sheep in Iraq.

Studies are reported on the effect of anthelmintic treatment on the body weight gain and wool growth of ewes with subclinical helminth infections. The parasites involved were Fasciola gigantica and Ostertagia spp., together with some Haemonchus contortus, Trichostrongylus spp., and Dictyocaulus filaria. In 1 group, 5 sheep, which were treated twice with tetramisole at an interval of 4 weeks to remove gastro-intestinal nematodes and lungworms, showed an increase of 41% in weight gain and 3.2% in wool growth compared with an untreated group. Another group, which was treated with both tetramisole and rafoxanide to remove nematode and fluke infections, had a 143% increase in weight gain and 81% in wool growth compared with the control.

Animals↗
PubMed1981

Haemoglobin polymorphism and resistance to helminths in Red Sokoto goats.

Haemoglobin variants were studied in a population of 104 Red Sokoto goats of over 1 year of age and in 49 kids. Three haemoglobin variants and 5 phenotypes were detected. The observed proportions of haemoglobin phenotypes in animals over 1 year of age differed from the expected numbers calculated on the basis of genetic equilibrium, while in kids there was good agreement between observed and expected values. There were significant differences in helminth egg counts among haemoglobin phenotypes. The heterozygotes had significantly lower egg counts than homozygotes. It is postulated that the discrepancy in the observed ratios of haemoglobin phenotypes of the older group was probably due to the differential susceptibility to helminth infection.

Animals↗
PubMed1983

Gastro-intestinal parasites in calves in Colombia.

This study was conducted at Carimagua Research Centre in a high savanna area in the eastern plains of Colombia. The objectives were to identify the pathogenic parasites prevalent in the area and to study their seasonal variations and ecological conditions for use in planning control measures. The calves from two groups of 50 cows each (zebu crossbred) were used. Group I calves were born at the beginning of the rainy season and Group II calves later in the same period. The highest faecal egg counts observed were of trichostrongylid eggs. In necropsied animals Cooperia had high populations followed by Haemonchus. Throughout the rainy season there were favourable conditions for development and transmission of calf nematodes; animals born towards the end of the rainy season developed a lower infestation level which is probably easier to control. The animals were particularly susceptible to infestation with gastro-intestinal parasites at weaning. From these observations and in view of the relatively low stocking rate and the sequential burning of the savanna it is suggested that deworming be done at eight and 18 months of age.

Animals↗
PubMed1987

Productivity of sheep and goats under three management systems at Bamenda, Cameroon.

The productivity of sheep and goats was examined under three management systems. A regime by which each animal received five doses of fenbendazole in a year gave similar results in terms of survival and liveweight gain to monthly dosing. Sheep kept by traditional methods without anthelmintic treatment survived and grew less well than goats. In contrast goats grew better and produced more young under traditional management although they were in general lighter than sheep.

Animal Husbandry↗
PubMed1982

Prevalence of helminth parasites of domestic fowl (Gallus domesticus) in Uganda.

A survey of helminth parasites of domestic fowl carried out in Uganda between 1977 and 1980 showed a high prevalence in both broiler and local poultry. Nematodes especially Ascaridia galli and Heterakis spp. were most prevalent in both groups of birds. Syngamus trachea and Capillaria spp. also occurred in both groups. Strongyloides avium was found only in broiler birds and Gangylonema ingluvicola only in local birds. Railletina spp. were the only cestodes found and their prevalence was high in both groups. The only trematode found, Postharmostomum commutatum, occurred only rarely and in local birds.

Animals↗
PubMed1988

Effects of management system, legume feeding and anthelmintic treatment on the performance of lambs in north Sumatra.

Sixty-four lambs in North Sumatra were used in a factorial experiment comprising two systems of management (grazing and stall-feeding), four levels of legume supplementation (0, 250, 500 and 1,000 g/d Pueraria javanica) and two anthelmintic treatments (none and albendazole every four weeks). The experiment lasted five months. The mortality rate for lambs not given anthelmintic was 28%, significantly higher (P less than 0.05) than for animals given anthelmintic which had zero mortality. Anthelmintic treatment increased growth rate from only 2 g/d to 29 g/d (P less than 0.05) and reduced faecal egg count from 1,700 epg to 270 epg. When not given anthelmintic grazing lambs had a higher mortality rate (38%) than stall-fed lambs (19%) but this difference was not significant. When given anthelmintic grazing lambs has a slightly higher growth rate (32 g/d) than stall-fed lambs (26 g/d). System of management had no apparent effect on egg count. Legume supplementation reduced the egg count of lambs not given anthelmintic but had no significant effect on mortality or growth rate.

Albendazole↗
PubMed1990

Helminthosis in goats in southern Tanzania: investigations on epidemiology and control.

Investigations were conducted in naturally infected goats to determine the main epidemiological factors related to gastro-intestinal nematode infections in southern Tanzania with a view to making appropriate recommendations for control. Faecal worm egg counts rose during the single rainy season and then fell to remain low during the dry season. The beneficial effect of an anthelmintic treatment after the rains was demonstrated in weaner goats under traditional management and this should form the basis of rational control.

Animals↗
PubMed1996

Studies on helminthosis at the Centre for Tropical Veterinary Medicine (CTVM).

The research work relating to helminths, which has been conducted within the Helminthology Section of the CTVM, often in collaboration with colleagues from the tropics is reviewed and placed into a historical perspective. The research has, in the main, concentrated on the trematodes Fasciola hepatica and Fasciola gigantica and the cestodes Taenia saginata and Taenia solium, but work on other parasites including gastro-intestinal nematodes is also considered. All of these parasites are of obvious veterinary/economic importance particularly in the tropics and subtropics. While the zoonotic importance of T. saginata and T. solium has been recognised for many years, it is only more recently that the zoonotic impact of Fasciola spp. has been generally acknowledged.

Animals↗
PubMed1989

An abattoir survey of the prevalence of gastro-intestinal helminths and Stephanurus dentatus in pigs in Belize.

In an abattoir survey in Belize 137 pigs were examined for gastro-intestinal helminths and Stephanurus dentatus. Hyostrongylus rubidus, Physocephalus sexalatus, Globocephalus species and Trichostrongylus colubriformis were recorded for the first time. Ascarops strongylina, Ascaris suum, Macracanthorynchus hirudinaceus, Strongyloides ransomi, Trichuris suis, Oesophagostomum species and S. dentatus were also found. Oesophagostomum species (45%) and S. dentatus (42%) were the most prevalent. The prevalence of infection with different species was compared between pigs of different origin, breed and management. Differences were apparently due to management; most species were more common in poorly managed pigs. M. hirudinaceus and S. dentatus were used as "markers" to indicate poor management. The usual methods of faecal egg counting were found to be unreliable for the diagnosis of M. hirudinaceus infection.

Abattoirs↗