+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Corona- and rotavirus enteritis in newborn calves in Bulgaria

Corona- and rotavirus enteritis in newborn calves in Bulgaria

Veterinarno-Meditsinski Nauki 15(9): 102-113

In the course of investigations into enteritis enzootics in newly-born calves, 55 fecal samples have been studied through direct electron microscopy by the negative contrast method. Rota viruses were found in eight of them, corona viruses in 38.2 per cent of the cases, and both rota- and corona viruses in 49.1 per cent of the cases. Two types of rota-viral particles were observed: with and without supercapsids. Also two types of corona-viral particles were established. The first type was relatively monomorphic, having an average diameter of 120 nm, and length of the surface spikes of 20 nm. The second type was pleomorphic with length of the spikes of 11 nm. Most of the fecal samples, containing corona viruses, agglutinate mice, rat and hamster erythrocytes. On studying the physical and chemical properties of the hemagglutinine, ist gradient density and antigenic patterns it was shown that it is related to the intact corona-virions. With the hemagglutination-inhibition test developed, antibodies against corona-viruses in the sera of a considerable number of the cows have been demonstrated. A precipitating antigen has been shown in a part of the fecal samples, containing rota-viruses. By studying the physical and chemical properties, its gradient density and its comparison with a refernce antigen, it has been shown that the antigen was conditioned by degraded fragments of rota-viruses. With the aid of the immunodiffusion method with a fecal antigen evolved, precipitating antibodies have been shown in 18 to 46 per cent of the cows and calves.

Please choose payment method:

(PDF emailed within 1 workday: $29.90)

Accession: 039689389

Download citation: RISBibTeXText

PMID: 223276

Related references

Coronavirus and rotavirus enteritis among newborn calves in Bulgaria. Veterinarnomeditsinski Nauki 15(9): 102-113, 1978

Diagnosis of corona- and rotaviral enteritis of calves in Bulgaria. Trudy Vsesoiuznogo instituta eksperimental'noi veterinarii3(53): 55-59, 1981

Aetiology of enteritis in newborn calves in the Vrachan region of Bulgaria. Veterinarna Sbirka 79(9): 19-23, 1981

Canine viral enteritis: prevalence of parvo-, corona- and rotavirus infections in dogs in the Netherlands. Tijdschrift Voor Diergeneeskunde 105(20): 181-190, 1980

Canine viral enteritis: Prevalence of parvo-, corona- and rotavirus infections in dogs in the Netherlands. Veterinary Quarterly 2(4): 181-190, 1980

Attenuated vaccines against rotavirus and coronavirus enteritis in calves. Veterinarnomeditsinski Nauki 23(10): 26-31, 1986

PCR characterization of strains of rotavirus isolated from calves with enteritis. 1998

Correlation of rotavirus infection of newborn calves with the content of total immunoglobulins and specific antibodies in dams and calves. Wiener Tierarztliche Monatsschrift 76(5): 143-149, 1989

An attenuated vaccine against rotavirus and coronavirus induced enteritis in calves. Veterinarno Meditsinski Nauki 23(10): 26-31, 1986

The efficacy of counter immunoelectrophoresis in diagnosis of rotavirus enteritis in calves. Gyvulininkyste ir Veterinarija Mokslo Darbai (24): 100-105, 1991

Studies on the aetiology of enteritis in new-born calves in Bulgaria. VetMed. Nauki, Sof, 4: 5, 43-56, 1967

Results of using RoKo 81 coronavirus and rotavirus vaccine against viral enteritis of calves. Veterinarna Sbirka 86(5): 40, 1988

Infectious enteritis diseases of new-born calves of the rotavirus and coronavirus eitology. Biulleten' Vsesoiuznogo instituta eksperimental'noi veterinarii: 7) 9-12, 1982

A study of cytopathic rotavirus strains isolated from calves with acute enteritis. Comparative Immunology, Microbiology and Infectious Diseases 6(3): 253-264, 1983

The pathology of neonatal enteritis in calves with observations on E. coli, rotavirus and Cryptosporidium. Annales de Recherches Veterinaires. Annals of Veterinary Research 14(4): 422-426, 1983