摘要:

The onset of insensibility during slaughter was studied in five, 31-day-old pigs. The state of sensibility was determined from the study of electroencephalograms (EEC) which were of a bipolar transhemispheric derivation. In 3 pigs slaughtered by bilateral severance of both common carotid arteries and jugular veins, it was judged that insensibility occurred within 25s and there was no resurgence of cerebrocortical activity following subsequent respiratory gasps. The EEGs became isoelectric within 115s. These results are compared with previous findings by the authors that adult sheep and lambs slaughtered by similar techniques became insensible within 7s whereas, in calves, the onset of insensibility was delayed for up to 85s and there were resurgences of cerebrocortical activity, following a respiratory gasp, for more than 300s.

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34850

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Serum gamma glutamyl transpeptidase (GGT) levels in blood samples taken from normal calves which bad suckled colostrum were much higher than those found in healthy adult cattle. Levels of over 60 times the normal adult level were observed. These high levels of GGT took approximately 5 weeks to decline to adult values. Calves which appeared to have not received or absorbed colostrum had GGT levels which would be considered normal in adult cattle. A calf with serum gamma globulin levels which indicated an intermediate amount of colostrum absorption had a level of GGT which was intermediate between that expected for normal adult cattle and that found in calves which had more fully absorbed colostrum. The mean GGT level observed in colostrum from 6 newly-calved cows was over 800 times the mean serum GGT level of the same 6 cows. It therefore appears most likely that GGT is concurrently absorbed with colostrum by calves and this gives rise to the very high levels seen in normal calves.

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34851

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Extract

ISSN:0048-0169    

DOI:10.1080/00480169.1981.36673

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Related to its potential vulnerability the respiratory tract has a very complex and effective defence apparatus. The interaction between these defence mechanisms and certain characteristics of aetiological agents results in a pattern in which initial infections by these agents tend to occur at specific sites in the tract.

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34852

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

For laboratory diagnosis of respiratory disease it is of overwhelming importance that the specimens taken are adequate, taken from the correct site and at the correct time. The lower regions of the respiratory tract are particularly difficult to sample but are more likely to yield the causative agent of a pneumonia. Infections involving the upper respiratory tract are much easier to sample and appropriate aspiration apparatus can be used. Consideration must be given to the timing of sample collection in relation to the life cycle of the causative micro-organism. Sampling of several animals is recommended.

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34853

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Sir, — I recently examined a masked lovebird, (Agupornis personura), housed in the Wellington Zoological Gardens. The bird was a young female which had not been obviously ill, but died overnight. On autopsy, I removed ten Ascaridiu plutyceri (Hartwich and Tscherner 1979), and three Capillaria sp. from the intestine.

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34855

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Sir, — The explanatory note3on the nomenclature of Campylobacter SP in the June 1981 issue is incorrect.

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34856

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor