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In a retrospective study on 265 cases of sporadic bovine abortions, stillbirths, and neonatal deaths in Atlantic Canada (1990 to 2001), an etiological diagnosis was made in 117 cases (44.2%). The cases were divided into 2 groups: 234 abortions, and 31 stillbirths and neonatal deaths. Identified caus...
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Three calves from a herd of beef cattle were examined because of disproportionate dwarfism and excessive extension of metacarpophalangeal and metatarsophalangeal joints. Abnormalities had been noticed at birth, 1 to 6 days earlier. A thorough herd investigation revealed that 16 calves born to 70 mul...
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The effect of infection with Trypanosoma vivax on pregnancy and post-partum cyclicity in ewes was investigated. Of the 5 ewes infected in the first trimester, 3 died without aborting and 2 after aborting. Intrauterine infection occurred in 2 of the foetuses removed at post mortem. Of the 5 infected ...
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Ten West African Dwarf ewes were inoculated with Trypanosoma vivax and, at varying intervals, treated subcuratively with diminazene aceturate to maintain the infection. Soon after infection all ewes had anoestrus for 40 to 96 days and 5 died by day 110 post infection. Compared to control animals, in...
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This study was designed to evaluate and compare the humoral immune response of broilers to Newcastle disease vaccine and virus challenge following day old and/or day 21 vaccination with the Nigerian (Vom)-produced attenuated infectious bursal disease vaccine. The study showed that 2 doses of infecti...
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Local skin reactions (chancres) developed in goats at the sites of deposition, by tsetse flies, of metacyclics of Trypanosoma congolense. The chancres developed much faster and were more pronounced when ten infected tsetse were allowed to feed on a spot as compared to only one fly per spot. The init...
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The patterns of humoral immune response, measured by enzyme-linked immunosorbent assay and the development of clinical signs, pulmonary lesions and mortality patterns were studied in goats experimentally infected with peste des petits ruminants virus (PPRV) or Kata virus. It was possible to classify...
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The changes in plasma volume, blood volume, erythrocyte indices, leucocyte indices and serum biochemical values during experimental pestes des petits ruminants (PPR) virus infection of West African dwarf goats (Fouta djallon) were investigated. There was a progressive decline of the plasma volume an...
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Reproductive disorders are frequently seen in human beings and in animals infected with tsetse-transmitted (African)trypanosomiasis. The disorders include irregular menstrual (or oestrus) cycle, infertility, abortion and impotence. Intrauterine infections occasionally occur, resulting in still birth...
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Herds of mainly zebu cattle were examined in the Ogun, Oyo, Ondo, Bendel and Kwara states of Nigeria between February 1986 and March 1987. A total of 757 animals were bled in the rainy season, and 768 during the dry season. Infection rates were as follows: Ogun, 2.7%; Bendel, 6.7%; Kwara, 17.3%; Oyo...
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The effect of Trypanosoma brucei and T vivax on the ejaculate of sheep and the rate of recovery with diminazene aceturate treatment was investigated. Animals were made to ejaculate once a week before infection, during infection and after treatment. Parameters studied were semen volume, semen colour,...
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Current knowledge of trypanosomiasis in Africa is briefly discussed and it is concluded that further research on the parasite must give prominence to the application of existing knowledge in solving immediate and long-term problems in livestock production..
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The author describes the effects on the prevalence of cattle trypanosomiasis of increasing cattle production in the sub-humid regions of southern Nigeria, and compares the results with infection levels in 1984 in northern Nigeria where Glossina and trypanosomiasis were being actively controlled. Inf...
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Newcastle disease virus was isolated from outbreaks of the disease in vaccinated and unvaccinated poultry flocks representing commercial and backyard farms in different parts of Nigeria. On characterization, all 12 isolates were found to be velogenic.
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Between 1967 and 1983, 328 animals (whole carcasses or frozen heads) were examined specifically for rabies in the Diagnostic Pathology Laboratory, University of Ibadan; 232 (70.7%), comprising 218 dogs, 6 cats, 2 caracals (Felis caracal), 2 cattle, 3 sheep and 1 goat, were positive. In 56% of the ca...
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The pathological effects of Trypanosoma vivax, T. congolense and T. brucei in fully susceptible ruminants are reviewed. The diagnosis of trypanosomiasis of ruminants in enzootic areas such as Nigeria is discussed with reference to clinical and parasitological methods..
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This new quarterly journal is published to satisfy "the urgent need for an international journal whose editorial base is in the tropics while it obtains advice from colleagues elsewhere in the world". It follows hard on the heels of Tropical Veterinary and Animal Science Research, a new jo...
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A Bitis gabonica which died in the University of Ibadan Zoo, Nigeria, was found to have severe degenerative and inflammatory lesions of the respiratory epithelium with consequent excessive production of mucus, infiltration by inflammatory cells and accumulation of exudate in the alveolar and infundi...