摘要:

Sera from 683 pigs of 41 swine herds with clinical atrophic rhinitis (A R), from 477 pigs of 37 herds with no A R history, from 267 breeding sows and breeding boars for slaughtering, from 22 boars at an artifical insemination centre, and from 103 SPF pigs were tested for the presence of antibodies to porcine cytomegalo virus (PCMV).

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693760

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

Feline mammary tumours and dysplasias were studied by various methods: morphological, electron‐microscopical, immunological and virological.

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693761

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

The value of a skin test for the diagnosis of Aujeszky's disease (pseudorabies) in swine was examined. Semipurified and concentrated antigens, obtained by ether/tween 80 inactivation of Aujeszky's disease virus, were inoculated intradermally into seronegative, experimentally infected and vaccinated swine and into pigs with maternal antibodies. A specific skin reaction, characterized by a visible indurated swelling, was observed within 24 hours in animals with active immunity, No reaction was seen in pigs with maternal immunity or in seronegative uninfected and unvaccinated animals. In the infected and vaccinated groups, 89% and 58% respectively of the animals with seroneutralizing antibodies were positive by the skin test response. Positive reactions were observed as early as 8 days after the infection. All but one seronegative animals remained free of antibodies after 2 consecutive skin tests and the course of decline of maternal antibodies was not changed. An earlier skin test did not lead to sensitization for a later application. The present results, together with field experience on 8 farms, revealed that the skin test could be considered a reliable method for diagnosis of Aujeszky's disease in swine on a herd basis.

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693762

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

During a 98‐day trial, eight groups of eight male weanling Texel x Friesian milk sheep lambs were fed the same hay and concentrates, the latter differing only in the contents of Cu, Zn, and Mo.

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693763

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

The study reported in the present paper discusses the clinical and histological picture of bovine demodecosis and the morphology of Demodex mites as seen in four cows suffering from generalized demodecosis. There were no clinical signs of other skin affections.

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693764

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

Both clinical and pathological features of seven horses suffering from a squamous cell carcinoma of the stomach are presented. The main complaints in the horses, aged six years or more, were loss both of weight and of condition. Metastases had often developed.

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693765

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

Cyanide is a potent and rapidly‐acting asphyxiant which prevents tissue utilization of oxygen by inhibition of the cellular respiratory enzyme, cytochrome oxidase. Inhalation or ingestion of cyanide produces reactions within a few seconds and death within minutes. Cyanide toxicity of dietary origin has been implicated in acute animal deaths and as major etiologic factors in toxic ataxic neuropathy in man and as a cause of vision failure in humans suffering from tobacco amblyopia and leber's hereditary optic atrophy. Diagnosis of cyanide toxicity may be confirmed by a variety of laboratory procedures, but accurate assay is essential for proper conclusions from analysis of animal tissues several hours after death or from human samples in instances of chronic dietary exposure. Biological detoxification of cyanide is available through several routes, and the application of sodium nitrite with sodium thiosulfate or administration of methylene blue are effective treatment procedure. The environmental availability of cyanide in its various forms necessitates an understanding of its pathophysiology and responsible management of hazardous situations.

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693766

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

The output of first stage Protostrongvlid larvae of sheep was studied in natural infections. Three sets of observations were obtained from October 1977 to December 1978 in three regions.

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693767

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

Milk samples from 3 machine milked herds with 185 goats were examined for mastitis.

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693768

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693759

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor