摘要:

Aims.To determine temporal and spatial patterns of bovine tuberculosis (Tb) in a population of brushtail possums (Trichosurus vulpeculu) free from commercial and recreational hunting and living contiguously with livestock, and to relate these patterns to measures of possum health and density.

ISSN:0048-0169    

DOI:10.1080/00480169.1999.36127

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

Aim.To obtain information on serum and liver vitamin B12and urinary methylmalonic acid concentrations as diagnostic tests to predict a weight gain response to supplementation with vitamin B12in young dairy cattle when grazing pasture of low cobalt content.

ISSN:0048-0169    

DOI:10.1080/00480169.1999.36128

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

Aims.To determine the effects of the intra-articular injection of surface-active phospholipid in a propylene glycol carrier on synovial fluid composition and joint function of horses, and to compare these effects with those observed after the intra-articular administration of prilocaine, hyaluronan and propylene glycol alone.

ISSN:0048-0169    

DOI:10.1080/00480169.1999.36129

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

Aims.To examine the effect of reducing the abundance of brushtail possums (Eichosurus vulpecula) on the distribution and prevalence of bovine tuberculosis (Mycobacterium bovis,Tb) in possums and the incidence of Tb in domestic cattle on a group of farms in the central North Island, New Zealand.

ISSN:0048-0169    

DOI:10.1080/00480169.1999.36130

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

Aim.To determine the prevalence of clinical mastitis in spring-calving dairy herds in the Waikato Region of New Zealand and to identify factors associated with variation in the prevalence of clinical mastitis between herds.

ISSN:0048-0169    

DOI:10.1080/00480169.1999.36131

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

Lithium chloride is used as a compliance indicator in nutritional research with humans. At least 95% of ingested lithium is recovered in urine (Heijnenet al., 1996). Lithium may be added to foodstuffs in amounts much higher than those naturally occurring. The human subjects consuming those foodstuffs may be asked to collect their urine, and lithium determination can then serve to check dietary compliance. We speculated that lithium would be a suitable external urine marker in ruminants. Total urine collection from ruminants often is not feasible, and the possibility of calculating total urine production on the basis of lithium determination in a spot sample is attractive.

ISSN:0048-0169    

DOI:10.1080/00480169.1999.36133

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

Although the cause of most bovine mastitis can be attributed to the major pathogens of the udder (Staphylococcusspp.,Streptococcusspp. andEscherichia coli), occasional cases occur that are caused by more unusual organisms. The mastitis caused by a number of these organisms may be characterised by a very marked degree of tissue damage and, consequently, grossly abnormal mammary secretions. Notable amongst such organisms isBacillus cereus, for which a number of cases have been reported from many countries with significant dairy industries (Scheiferet al., 1976; Jones and Turnbull, 1981). In a British survey,B. cereusmastitis accounted for 0.3% of cases (Johnson, 1986), whilst in the Sydney region of Australia, 119 cows were diagnosed withB. cereusmastitis between 1960 and 1985 (Johnson, 1986). However, no previous case reports have been found for cattle in New Zealand, although it is isolated from time to time in routine culture of milk from cows with inexplicably high somatic cell counts (Anon, 1982; Graham, 1998). Only a very few cases have been reported from pastoral cattle anywhere in the world.

ISSN:0048-0169    

DOI:10.1080/00480169.1999.36134

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor