摘要:

A theoretical analysis of the types of displacement of the abomasum in the abdomen is presented based on a stud of forty‐seven post‐mortem examinations of calves, cows, lambs and sheep showing right‐sided abomasal displacement and production of knots. These displacements are quantified following the introduction of a dual‐axial system. One system (XYZ) related to displacements of the abomasum on a pendulum model, the point of suspension being situated on the visceral surface of the liver and the arms consisting of parts of the digestive tract adjacent to the abomasum. The other system (x1y1z1) comprises axes centered on the abomasum, about which this organ was able to rotate without changing its position in the abdomen.

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693770

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

An outbreak of a coronavirus infection in a litter of 10‐week‐old poodle pups from a commercial kennel is described. Coronavirus‐like particles were demonstrated by electron microscopy in the intestinal contents and in the colonic mucosa. Treponemas and campylobacters were excreted in great numbers in the faeces. The gastrointestinal disturbances were complicated by hepatic and renal degeneration and severe bronchopneumonia.

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693771

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

Neutralizing antibodies to Vomiting and Wasting Disease virus were found in 95 per cent of the sera collected from Belgian sows at slaughter. Piglets suckled by immune sows and kept in isolation acquired maternal antibodies; these had disappeared in all the animals at the age of 15 weeks. Most pigs had lost their maternal antibodies at the age of 11 or 12 weeks (respectively 57 per cent or 86 per cent). A serologic study on two conventional breeding farms showed that this passive immunity was replaced by active immunity between the ages of 8 and 16 weeks. No clinical disturbances appeared to be associated with the infection. The present data indicate that Vomiting and Wasting Disease virus persists on the majority of the conventional breeding farms.

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693772

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

In a series of experiments the effect of administering KNO2was studied, during parturition, on the capability of oxygen transport of maternal blood and on oxygen transfer to foetal blood. The following blood parameters were analysed, MHb percentage, pO2, O2‐saturation, pH, pCO2, and (NO2) in maternal arterial blood (carotid art.) and venous blood (jugular vein) and in foetal arterial blood (umbilical art.) and venous blood (umbilical vein). The relative O2‐saturation was calculated from the estimated O2‐saturation by multiplying with the factor Hb (mmol/1) minus MHb (mmol/1), divided by Hb (mmol/1). In addition, blood pressure in the carotid artery, heart rate, and respiration rate in the dam were continuously recorded for some hours.

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693773

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

Two cases of genuine concurrent muscular subvalvular aortic and muscular infundibular pulmonary stenosis in pigs are reported. The character of this morphophy‐siological syndrome is discussed.

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693774

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

In this review article, some recent developments in the immunology of parasitic infections are presented. After an introduction in which the major human parasitic infectious diseases, including malaria, african and american trypanosomiasis, leishmaniasis, filariasis an schistosomiasis are mentioned, a description of the host / parasite relationship in malaria presented. The possibility for the development of vaccins against malaria are described. The close relation between the immunological responses and the inflammatory reactions present both inSchistosoma mansoniandTrichinella spiralisinfections is stressed. Particularly the recently recognized direct anti‐parasitic activity of eosinophils was emphasized.

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693775

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

Egg transmission of egg drop syndrome 1976 virus (BC14 virus) in fowl was demonstrated in the second and third week after experimental infection. Eggs of BC14 virus infected hens were incubated weekly after disinfection with formaline gas. After 18 days of incubation, eggs with live embryos were homogenized. This egg material was fed to adult hens, housed in isolators.

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693776

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

Twelve (12) heavy horses of the Shire breed imported into Nigeria in 1974 died within two months after importation. This was because of inclement weather and non‐availability of AHS vaccine.

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693777

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

ISSN:0165-2176    

DOI:10.1080/01652176.1980.9693769

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor