Pathogenic effects of the coccidium Eimeria ninakohlyakimovae in goats

文献类型： 外文期刊

第一作者： Dai, YB

作者： Dai, YB;Liu, XY;Liu, M;Tao, JP

作者机构：

关键词： blood biochemical analysis;coccidiosis;Eimeria ninakohlyakimovae;goat;pathogenic effect

期刊名称：VETERINARY RESEARCH COMMUNICATIONS （ 影响因子：2.459； 五年影响因子：2.352 ）

ISSN： 0165-7380

年卷期： 2006 年 30 卷 2 期

页码：

收录情况： SCI

摘要： Twenty-four coccidia-free goats were reared artificially in indoor cages and allocated to 6 groups of 4 animals each. At 20 days of age, goats in groups 1-3 received 10(4), 10(5) and 10(6) sporulated oocysts of Eimeria ninakohlyakimovae per goat, respectively, each as a single dose. Goats in group 4 received daily doses increasing over a 3-week period, starting with 100/day for the first week, followed by 1000, and 10 000/day in weeks 2, 3, respectively. Goats in group 5 received 10(4) oocysts following a challenge dose of 10(6) oocysts on day 32. Goats in group 6 were kept as uninoculated controls. Infected animals showed diarrhoea and weight loss. Goats in group 4 showed longer periods of diarrhoea and patency than other infected goats. Goats in group 5 showed the same severe clinical signs as those in group 3 but produced very low oocyst output after a challenge dose. The diarrhoea was associated with a reduction in alkaline phosphatase activity and increases in packed cell volume and haemoglobin. No significant differences were found in serum aspartate aminotransferase, alanine aminotransferase, total protein, albumin, globulin, Na+, K+, Cl between groups during 48 days after inoculation. There were no serum enzyme indications of damage to the liver. Histological examination performed 100 days after inoculation revealed that inoculated goats had mild subacute to chronic proliferative enteritis in the lower small intestine and the large intestine, and the mesenteric lymph nodes, gallbladders and livers also showed slight histological lesions. The results showed that E. ninakohlyakimovae was highly pathogenic.

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