摘要:

A serological survey of 213 randomly chosen dairy farm residents in the Manawatu showed that 66 (34%) of the people who milked cows had leptospiral titres ≤ 1:24 by the Microscopic Agglutination Test. Forty-eight (72.7%) of these people had titres tohardjo, while 29 (43.9%) had titres topomona. Dualhardjo/pomonatitres occurred in 12 people.BallumandCopenhageniaccounted for 8% of the titres found. Women milkers and farm residents who did not milk were all serologically negative. A third of the seropositive milkers had a history of clinical leptospirosis. Other factors which significantly correlated with leptospiral titres included the time spent in the dairy shed during milking, the wearing of shorts, the keeping of pigs for sale, and the number of years the individual had been working on a dairy farm. The type of milking shed and the size of the herd were interrelated and both showed strong trends towards a correlation with serological prevalence.

ISSN:0048-0169    

DOI:10.1080/00480169.1980.34769

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

From a study of approximately 1000 New Zealand Romney ewes from different areas of New Zealand it was found that the mean packed cell volume of sheep of haemoglobin type B Hb B was significantly lower than for haemoglobin type A (Hb A) sheep. The mean Hb A gene frequency was 0.60.

ISSN:0048-0169    

DOI:10.1080/00480169.1980.34770

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

摘要:

A trivalent leptospiral vaccine prepared by incorporating servovarhardjoin an existingpomona, copenhageniproduct has been evaluated in both hamsters and cattle.

ISSN:0048-0169    

DOI:10.1080/00480169.1980.34771

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

ISSN:0048-0169    

DOI:10.1080/00480169.1980.34773

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor

ISSN:0048-0169    

DOI:10.1080/00480169.1980.34774

出版商:Taylor & Francis Group    

年代:1980

数据来源: Taylor