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Tuyển tập các báo cáo nghiên cứu về bệnh thú y được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành thú y đề tài: Cryptosporidium parvum and Giardia intestinalis in Calf Diarrhoea in Sweden. | Acta vet. scand. 2003 44 145-152. Cryptosporidium parvum and Giardia intestinalis in Calf Diarrhoea in Sweden By C. Bjorkman1 C. Svensson2 B. Christensson3 and K. de Verdier4 department of Ruminant Medicine and Veterinary Epidemiology Swedish University of Agricultural Sciences Uppsala department of Animal Environment and Health Swedish University of Agricultural Sciences Skara department of Parasitology National Veterinary Institute and Swedish University of Agricultural Sciences Uppsala and department of Ruminant and Porcine Diseases National Veterinary Institute Uppsala Sweden. Bjorkman C Svensson C Christensson B de Verdier K Cryptosporidium parvum and Giardia intestinalis in calf diarrhoea in Sweden. Acta vet. scand. 2003 44 145152. - The objective of this study conducted in 75 herds was to investigate the presence and significance of Cryptosporidium parvum and Giardia intestinalis in Swedish dairy calves in comparison with rotavirus coronavirus and Escherichia coli K99 . The farmers were asked to collect faecal samples from each heifer calf that had diarrhoea between birth and 90 days of age and also from a healthy calf of the same age. In total 270 samples were collected and analysed. C. parvum either alone or together with G. intestinalis and or rotavirus was detected in 16 11 and 6 5 of the samples from diarrhoeic and healthy calves respectively. Even though a higher proportion of diarrhoeic calves shed C. parvum the difference between the groups was not statistically significant p 0.067 possibly due to the low number of positive samples. G. intestinalis was found in 42 29 of the diarrhoea samples and in 29 23 of the samples from healthy calves. Rotavirus and coronavirus were demonstrated in 24 and 3 of the diarrhoea samples respectively whereas E. coli K99 was only found in samples from 2 healthy calves. C. parvum and G. intestinalis were found in samples from calves 7 to 84 days of age and during all seasons. The results confirm that C. parvum is present
