Parasitic gastroenteritis and fasciolosis widely reported in sheep

2013 ◽  
Vol 172 (10) ◽  
pp. 260-263
Keyword(s):  
Parasitic Gastroenteritis

The ecology of the free-living stages of Ostertagia circumcincta

Parasitology ◽  
1972 ◽  
Vol 64 (3) ◽  
pp. 451-460 ◽  
Author(s):  
T. E. Gibson ◽  
G. Everett
Keyword(s):  
Development Time ◽  
Grazing Management ◽  
Free Living ◽  
Faecal Output ◽  
Parasitic Gastroenteritis ◽  
Eggs And Larvae

The development and survival of the eggs and larvae of O. circumcincta was studied by spreading the daily faecal output of a sheep over a 2 m square grass plot for 1 week. Observations were carried out for 3 years on material spread at 4-weekly intervals and broadly similar results were obtained in each year. Development time was long in eggs placed outside in January, February, March, November and December. Yields of larvae were small and all were dead within 5 months. During the rest of the year development time was about 2 weeks, yields of larvae were high and larvae survived until July or August of the following year. The significance of these findings in devising systems of grazing management to control parasitic gastroenteritis is discussed.

Ruminant behaviour in subclinical parasitic gastroenteritis

Livestock ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 78-85
Author(s):  
Andrew Forbes
Keyword(s):  
Parasite Control ◽  
Lower Growth ◽  
Sensing Technology ◽  
Helminth Infections ◽  
Feasible Option ◽  
Parasitic Gastroenteritis ◽  
Commercial Farms ◽  
Free Ranging ◽  
Grazing Livestock ◽  
Cattle And Sheep

Behavioural changes in cattle and sheep are used in clinical diagnosis to detect abnormalities and to help determine the aetiology. In many parasitic diseases, infections can be subclinical, but their impact on performance can still be of importance in a farming setting. A common feature of helminth infections is a reduction in feed intake, which can account for lower growth rates and milk yields, yet inappetence is difficult to detect in free-ranging, grazing livestock. Remote-sensing technology can facilitate data collection and is useful not only in research, but is a feasible option now on commercial farms. If inappetence in grazing sheep and cattle as a result of parasitic gastroenteritis can be easily monitored and assessed, then early interventions may be possible and these can ensure that animal performance is kept on target. Application of such approaches is consistent with the principles of responsible use of anthelmintics and targeted selective treatments, which can be further integrated into complementary elements of parasite control, including grazing management.

scholarly journals Concurrent helminthosis engendered gastroenteritis in a leopard Panthera pardus

2019 ◽  
Vol 56 (4) ◽  
pp. 323-328
Author(s):  
R. Kumar ◽  
A. D. Moudgil ◽  
A. Sharma ◽  
R. Sharma ◽  
R. Masand ◽  
...  
Keyword(s):  
Mononuclear Cells ◽  
Inflammatory Cells ◽  
Toxocara Canis ◽  
Intestinal Content ◽  
Detailed Examination ◽  
Pathological Examination ◽  
Polymorphonuclear Cells ◽  
Panthera Pardus ◽  
Parasitic Gastroenteritis ◽  
Present Case Study

SummaryThe necropsy of a leopard (Panthera pardus), succumbed to a chronic ailment exhibited a mixed parasitic gastroenteritis. Gross internal examination of carcass revealed the presence of round and tapeworms in the stomach and intestines with diffuse catarrhal and hemorrhagic gastroenteritis. The detailed examination of the intestinal content revealed the presence of Toxocara canis and Spirometra species eggs. Also, the gross morphological investigation of round and tapeworms approved the presence of both species. Histo-pathological examination showed sloughing of intestinal epithelium, hemorrhages, and ulcerative areas with the infiltration of polymorphonuclear cells admixed with mononuclear cells. Lungs revealed the accumulation of eosinophilic edematous fl uid in the alveolar spaces along with inflammatory cells. These parasites are pathogenic to precious wild felids and often pose a threat of zoonotic transmission due to spill-over infections. The present case study is an attempt to put on record a case of parasitic gastroenteritis in a captive leopard.

Parasitic gastro-enteritis and its effect on the blood and liver copper levels of dairy calves

1959 ◽  
Vol 10 (3) ◽  
pp. 471 ◽  
Author(s):  
KC Bremner
Keyword(s):  
Whole Blood ◽  
Copper Sulphate ◽  
Severe Anaemia ◽  
Dairy Calves ◽  
Liver Copper ◽  
Plasma Copper ◽  
Parasitic Gastroenteritis

Experiments were performed to determine the effect of parasitic gastroenteritis on copper levels in the blood and liver of Australian Illawarra Shorthorn dairy calves. In two trials with calves heavily infested with Haemonchus placeii (Place) Ransom, Bunostomum phlebotomum Railliet, Oesophagostomum radiatum (Rudolphi), and CooperiaA spp., severe anaemia and hypoproteinaemia resulted. Liver copper levels of the infested calves were depressed, n-hereas those of wormfree controls either rose or remained relatively constant. The degree of depression appeared to be related to the magnitude of infestations. While slight falls in liver copper levels of worm-free calves could be induced by daily withdrawal of large volumes of blood, these falls were not of the same magnitude as those produced by trichostrongyle parasites. In a third experiment calves were infested with B. phlebotomum only, and it was demonstrated that following the administration of a known amount of copper sulphate by ruminal injection, significantly less copper was taken up and stored in the liver by parasitized calves than by worm-free controls. Indications were obtained that whole blood and plasma copper levels mere depressed by infestations in which B. phlebotomum predominated, but plasma copper concentrations were unaffected by chronic phlebotomy or by heavy infestations in which H. placei predominated. It was found necessary to withdraw a total of 27.5 I. of blood over a period of 19 weeks from worm-free calves in order to produce changes in their haemoglobin levels similar to those shown by calves carrying heavy mixed infestations consisting of H. placei, B. phlebotomum, O. radiatum, and Cooperia spp.

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