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At least 505 records · Page 28Linked to original sources
PubMed1979

Study of gastro-intestinal stronglyosis in a sheep flock on permanent pasture. 1. Sheep parasitism in 1977.

An epidemiological study aimed at defining gastro-intestinal parasitism in sheep qualitatively and quantitatively was carried out in the Limousin area in France. Five lambs were sacrificed regularly every 4 weeks from May till January of the following year. Complete parasite counts were performed on these animals as well as measurements of the plasma level of pepsinogen. In order to define the influence of parasitism on the growth of the animals, the weight gains of lambs treated regularly and untreated lambs were compared. The results of post-mortem examination show that parasitism is mainly linked to the incidence of strongyles. Other observations in the flock have shown that Moniezosis may also play a non-negligeable part. The parasitic level, already high after one month at pasture, reached its maximum in July-August 1977 and was marked by a very high level of parasitism. Among these species found, two played an essential part: Ostertagia circumcincta and Haemonchus contortus. A study of the growth of the lambs showed that within 6 months, the weight gain of the treated animals was twice that of the untreated animals. The effects of parasitism were worsened by the low fodder value of the pasture and the occurrence of overgrazing. The blood pepsinogen measurements confirmed the usefulness of this technique in establishing the mean level of infestation of a flock by parasites of the abomasum. It seems that in some cases it could help to define the succession of peaks of infestation by different species.

Animal Nutritional Physiological Phenomena↗
PubMed1977

[Cyathostominosis: a form of severe strongylidosis (author's transl)].

A form of strongyle infection in young horses and ponies, observed during the period from November to May, is described. Large numbers of larvae of Cyathostominae in the fourth or early fifth stage of development are found to be present in the (often watery) faeces. This excretion of larvae is not affected by treatment with anthelmintics. A large number of these patients die from the sequelae of verminous enteritis.

Animals↗
PubMed1978

[Studying the faeces for the presence of parasites in horses and ponies (author's transl)].

In 3,791 horses and ponies submitted to the Department of Internal Disease of Farm Animals of the Faculty of Veterinary Medicine, Utrecht, the faeces were studied for the presence of parasites. The results were classified by age groups and months of arrival. Eggs of the Strongylus type were found to be present in 57.3 per cent of the faecal samples, eggs of Parascaris equorum were present in 6.1 per cent, eggs of Oxyuris equi in 1.2 per cent, eggs or larvae of Dictyocaulus arnfieldi in 0.2 per cent, eggs of Anoplocephala in 2.5 per cent and oocysts of Eimeria leuckarti in 0.3 per cent. Eggs of Strongyloides westeri were found to be present in 56.4 per cent of the foals under six months and in 12.3 per cent of those in the 6-12 month range. Eggs of Fasciola hepatica were observed in 0.6 per cent of the faecal samples of horses and ponies over twelve months of age (3,340). The highest proportion of faecal samples containing eggs of the Strongylus type was recorded in Augusts (65.2 per cent), whereas this proportion was 52.4 and 50.7 per cent respectively in April and October. Eggs of O. equi, eggs or larvae of D. arnfieldi and oocysts of E. leucarkti were not observed in horses and ponies over ten years of age. On the other hand, eggs of P. equorum were still found to be present in animals up to fifteen years of age.

Animals↗
PubMed1978

Parasites of domestic and wild animals in South Africa. X. Helminths in impala.

Two to four impala in the Nylsvley Nature Reserve were culled each month from February 1975-February 1976. Two trematode species, 1 cestode species and 13 species of nematodes were recovered from these antelope. Of these, Fasciola gigantica, Gongylonema pulchrum, Haemonchus placei and Trichostrongylus falculatus are new records for impala. In general, H. placei, Longistrongylus sabie and Impalaia tuberculata exhibited a similar pattern of seasonal occurrence. Adult worms were present during November-February, while marked inhibition in the development of large numbers of 4th stage larvae occurred from April-September or October. Cooperia hungi, Cooperioides hamiltoni and Cooperloides hepaticae followed a similar pattern, but inhibition in the 4th larval stage was not as marked and lasted from June-September. No seasonal pattern of prevalence could be determined for Trichostrongylus spp. The worm burdens of young impala increased with the age of the animals and reached a peak when the impala were 1 year old.

Animals↗
PubMedDate not supplied

[Critical test of the activity of tetramisole phosphate on gastrointestinal helminths of sheep].

The phosphate sale of tetramizol assayed in naturally infested sheep by subcutaneous infection at the dosis of 8,66 mg/kg revealed very high efficiency against strongylid gastro-intestinal nematodes; its efficiency was comparable that found by several authors for the hydrochloride and cyclamate salts of the same drug, also by subcutaneious injection, at the dosis of 10 mg/kg. In what concerns helminths belonging to the genera Strongyloides and Capillaria our results were not conclusive enough.

Animals↗
PubMed1977

[Development of Angiostrongylus cantonensis in the lung of Achatina fulica (author's transl)].

Twenty-four Achatina fulica from Pai-sha of the Pescardores Islands, where no Angiostrogylus cantonensis has been found in A. fulica(4), were inoculated with the first stage larvae of A cantonensis. One snail was killed every day after 24 days following inoculation. The lung of each snail was separated and examined for larvae under microscope. The same lung was then digested with pepsin. The larvae recovered after pepsin digestion were examined for more detailed morphology. This study confirmed that the first stage larvae of A. cantonensis passed through the respiratory pore to the lung of A. fulica and developed into infectious form (3rd stage larvae) in the lung. The second and third stage larvae were found in the lung on the 7th and 17th day respectively after inoculation. Worm capsules were found in the lung on the 12th day after inoculation and the size of capsule was in proportion to the duration of the infection.

Animals↗