Cysticercus Ovis Research Articles

Lesions in finished early born lambs in southwest England and their relationship with age at slaughter

During a 2 year prospective study of 4413 early born housed lambs, from three flocks in southwest England, 3910 (88.6%) lambs were finished and 3718 (95.1%) of these were observed at the abattoir. The identity, age, carcase and pluck abnormalities and dead weight, conformation and fat classification of each lamb were recorded. Up to 20% of lambs had at least one abnormality. Pneumonia was the most frequent lesion observed with 10–15% of the lung tissue affected in the majority of lambs. Pleurisy, pericarditis and Cysticercus ovis infection were also observed in thoracic organs. In the carcase bruising, pleurisy, arthritis and C. ovis were the most frequent causes of rejection. Livers with haemorrhagic tracts thought to be related to parasite migration were observed. Prevalent lesions at slaughter of arthritis, pleurisy and pneumonia were associated with an increase in days to slaughter. The rejections and reduced growth rate were estimated to have cost the farmers £600–1500 per annum.

Taenia oviscysts in lamb meat: The relationship between the number of cysts observed at meat inspection and the number of cysts found by fine slicing of tissue

Abstract Extract Madam;– The Cysticercus ovis survey of McNab and Robertson,(1 McNab, J.D. and Robertson, T.G. 1972. Cyslicerus avis survey: summary of three years' results. N.Z. vet. J., 20: 66–68. [Taylor & Francis Online] , [Google Scholar])conducted in New Zealand from 1967-70, concluded that meat inspection results seriously underestimated the incidence of C.ovis, and that the true incidence could be 5-10 times that based simply on routine inspection. This survey found that figures were 50% higher on average than the figures produced by the specific works on that day, indicating that an interested observer looking for only T.oviscysts, could find more cysts than the meat inspector. From 190 carcases that had no observable cysts at meat inspection, 50(26%) were found to contain cysts when finely sliced. The estimate of true incidence was therefore based on the combination of these two factors. No figures were available for the prevalence of cysts in sheep and lambs, and neither were the figures available to relate the number of cysts observed at meat inspection to the number of cysts actually present in the carcase. An estimate, based on figures supplied by Gemmell, (2) lead us to suspect that lambs that had five cysts observed on the carcase might have as many as 45 more cysts deep-seated in the musculature. Because the export criterion for lamb carcases is "no more than five observable cysts on the carcase, excluding head, heart and diaphragm", it is of interest to know the relationship between numbers of cysts on the carcase and numbers of deep-seated cysts within lamb carcases.

Prevalence of hydatidosis and cysticercosis in slaughtered livestock in Nigeria.

A survey was carried out at Kano abattoir in order to estimate the incidence of hydatidosis and cysticercosis in slaughtered livestock. Of the animal species examined, hydatid disease was found in sheep (11.4 per cent), goats (26.5 per cent), cattle (14.7 per cent) and camels (55.5 per cent). Cysticercus tenuicollis was found to be most prevalent in goats (34.2 per cent), followed by sheep (21.4 per cent) and cattle (0.1 per cent). Out of 4844 cattle examined, less than 2 per cent haboured Cysticercus bovis cysts; while Cysticercus ovis cysts were found in sheep (1 per cent) and goats (0.8 per cent).

INCIDENCE OF CYSTICERCUS OVIS IN SHEEP AND LAMBS AT ALBANY, WESTERN AUSTRALIA

A record was made of the prevalence of Cysticercus ovis in sheep and lambs killed at Albany, Waroona and Geraldton from 1970 until 1973. Detailed dissection of 292 carcases which had passed routine inspection revealed C. ovis in 60 (20.5%). A record of all C. ovis cysts found during routine boning of 102,262 carcases which passed normal inspection showed 10.4 cysts per 100 carcases, and in 6,863 carcases rejected for export because of the presence of C. ovis an average of 24.0 cysts per 100 carcases. An attempt was made to relate the incidence of carcases infected with C. ovis in a line of sheep with the incidence of undetected cysts in carcases from that line which had passed routine inspection. No relationship was established. The relative incidence of C. ovis and C. tenuicollis was recorded in 57,426 sheep to show C. ovis in 2,312 (4.0%) and C. tenuicollis in 15,123 (26.3%). Only 21 (0.1%) sheep in 26,774 were found with hydatid cysts. In 3,823 lambs from 40 farms 486 lambs from 6 farms did not show either C. ovis or C. tenuicollis and lambs from 9 farms did not show tenuicollis and lambs from 25 farms did not show C. ovis. In 604 C. ovis cysts from the hearts and diaphragms of lambs, 36 (6.0%) were considered to be alive.

Ovine cysticercosis in the Albany region of Western Australia. 2. Trial control program.

The effect of a program to control Teania ovis cysticercosis was investigated on 32 adjacent farms at Mt Manypeaks in Western Australia. Farmers were advised not to feed dogs any raw sheep meat or offal and they were supplied with sufficient cestocide to treat all their dogs every 2 months. Other aspects such as the need for control of the movement of dogs and the correct disposal of offal from home killing of sheep were discussed and recommendations made. The success of the program was determined by recording the incidence of Cysticercus ovis in lambs born on the farms and killed at a local abattoir, and the incidence of T. ovis in dogs on the farms. Before the trial 6.9% of lambs were infected with C. ovis and 11 of the 32 farms had a T. ovis infected dog. The C. ovis incidence figures fell to 2.8%, 0.5%, 1.8% and 0.3% for the four years of the trial, and only 1 dog, a recently introduced puppy, was found to be infected with T. ovis. The results are discussed and reasons for the success of the program as a whole and apparent individual farm failures are discussed.

Cysticercus ovis survey: summary of three years' results.

Abstract Extract A survey of the incidence of Cysticercus ovis in New Zealand was carried out in 14 selected meat works by officers of the Meat Division and Biometrics Section of the Department of Agriculture during the meat years commencing October 1, 1967, 1968, and 1969. It involved examination of some 778,000 lambs and 526,000 ewes. The detailed information from the 3 years of this survey has been summarized in the tables presented below.

Measles (Cysticercus Ovis) in Sheep in New South Wales

Australian Veterinary JournalVolume 10, Issue 2 p. 57-59 Measles (Cysticercus Ovis) in Sheep in New South Wales J. Drabble B.V.Sc., J. Drabble B.V.Sc. Veterinary Officer in Charge of Inspection, State Abattoir, Homebush Bay, New South Wales.Search for more papers by this author J. Drabble B.V.Sc., J. Drabble B.V.Sc. Veterinary Officer in Charge of Inspection, State Abattoir, Homebush Bay, New South Wales.Search for more papers by this author First published: April 1934 https://doi.org/10.1111/j.1751-0813.1934.tb01016.xCitations: 2AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Citing Literature Volume10, Issue2April 1934Pages 57-59 RelatedInformation