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1.
Abstract Extract Recently, we reported on outbreaks of Leptospira interrogans serovar pomona infection in newly weaned lambs(1). It was suggested that wet environmental conditions played an important role in the pathogenesis of the disease in that class of sheep. This communication presents observations on another case of ovine leptospirosis, one that occurred under different circumstances, i.e. different season, age and environmental conditions. 相似文献
2.
Abstract Extract Sir, — We were interested to see the results of the trial conducted by Flint and Liardet (2) which showed that the antibodies produced by hamsters in response to a hardjo bacterin protects them against balcanica infection. Their results complement those from a passive hamster protection test conducted by ourselves. In this test 10 hamsters were each injected intraperitoneally with 0.5 ml of bovine anti-Pithardjo serum. This serum had been collected from a heifer which had received a 2 ml dose of a commercial hardjo/pomona bacterin* eight weeks previously and had a titre of 1:96 to hardjo. Twenty-four hours later these 10 hamsters were challenged: 5 received an intraperitoneal inoculation of approximately 2 x 107 bakanica organisms and 5 received a similar inoculum of hardjo organisms. At the same time, 2 control groups of 5 hamsters were challenged with balcanica and hardjo by the same route. Leptospires could not be isolated from any of the challenged hamsters which received anti-hardjo serum when their kidneys were cultured 18 days post-inoculation. However, leptospires were isolated from the kidneys of 5 out of 5 control hamsters inoculated with hardjo and 4 out of 5 control hamsters inoculated with balcanica. An analogous trial using bovine anti-balcanica serum, collected from cattle experimentally infected with balcanica, gave almost identical results to the above trial. 相似文献
3.
Abstract In the June 1998 issue of the New Zealand Veterinay Journal, a clinical review was published focusing on aspects of the protein nutrition of dairy cattle (Westwood et al., 1998). The authors wrote: “Most species of rumen bacteria can use ammonia for growth, but some, particularly bacteria which ferment cell wall carbohydrates, use or have obligate requirements for amino acids and peptides (Russel et al., 1992)”. 相似文献
4.
Abstract Extract Sir, — Correspondence in your journal has indicated that there is some divergence of opinion about the efficacy of the complement fixation (CF) test for the diagnosis of ovine brucellosis (Brucella ovis) (1) (2) (3) (4) . A number of letters which have recently been received at the Animal Health Reference Laboratory indicate that this issue is not yet fully resolved. We believe that part of the difficulty is due to misunderstanding about the use and interpretation of the test, and we would therefore like to comment. 相似文献
5.
Abstract Extract Sir:– Recently, caprine arthritis-encephalitis virus (CAEV) was isolated in New Zealand.(5) The virus induced syncytial cell formation in cell culture, budded from the cytoplasmic membrane of infected cells, was 80-100 nm in diameter, and reacted with both CAEV- and maedi/visna-positive antisera. We wish to present evidence that this isolate of CAEV has other biochemical characteristics of the Retroviridae. The two biochemical techniques used were the detection of 3H uridine-Iabelled virus and the assay for viral RNA-directed DNA polymerase (RDDP). 相似文献
6.
R.D. Jolly B.V.Sc. Ph.D. 《New Zealand veterinary journal》2013,61(5):87-89
Abstract Extract Ovine toxoplasmosis is of importance in New Zealand where it is recognized as the most common cause of intrauterine infection leading to abortion and stillbirths (Hartley and Boyes, 1964). Although clinical disease is rare in humans, serological evidence shows a high incidence of subclinical infection with 50% of New Zealand adults over 40 years of age showing positive titres (Manning and Reid, 1956). There is, however, a paucity of information on the disease incidence in other species in this country. Hartley (1956) has recorded toxoplasmosis in dogs and fowls. Pneumonia in a pig associated with Toxoplasma gondii was described by Shortridge and Smith (1964) while, more recently, Shortridge (1968) noted two cases of feline toxoplasmosis. This present communication concerns an outbreak of acute toxoplasmosis in several piglets. 相似文献
7.
D.R. Ris B.Sc. Dip.Agric. D.E. Lake B.V.M.S. M.R.C.V.S. J.T.S. Holland F.N.Z.I.M.L.T. 《New Zealand veterinary journal》2013,61(10):218-220
Abstract Extract Bovine Leptospirosis was first recognized in New Zealand in 1950 (Anon., 1951). Since then the infection has become widespread, particularly during wet spring and summer months (Anon., 1973). In calves, infection with serotype pomona frequently gives rise to haemoglobinuria and general malaise, while symptoms such as loss of condition and pendulous abdomens which appear suddenly and are followed by sudden death have been associated with copenhageni infections (Dodd and Brackenridge, 1960). 相似文献
8.
Abstract Extract Madam;–The results of field trials of a live parainfluenza virus type3(PI3)vaccine suggested that(PI3)might not be the only virus involved in the initiation of outbreaks of pneumonia in lambs in New Zealand,(5)The outbreaks that were not associated with infection with(PI3)could not be linked to infection with the other ovine respiratory viruses then known to be present in New Zealand (ovine adenovirus type 6 and the ovine variant of bovine adenovirus type 7)((1),(4),(5)suggesting that other unrecognised viruses might be involved. Respiratory syncytial virus (RSV) is a major cause of pneumonia in human infants and in cattle.(8)This virus has recently been isolated from a yearling ewe with mild rhinitis(6)and there is serological evidence of infection in adult sheep.(3),(6)However, there are no reports implicating this virus in outbreaks of pneumonia in lambs, although experimental infection of lambs with a bovine isolate of RSV resulted in reduced pulmonary bacterial clearance leading to secondary pneumonic pasteurellosis.(2) 相似文献
9.
P.B. Kuppuswamy 《New Zealand veterinary journal》2013,61(4):110-118
Abstract Extract Recognition that one infective agent could cause ram epididymitis and ewe abortion in New Zealand was due to McFarlane et al. (1952). The organism was not identified at that time, but Buddie and Boyes (1953) classified it in the genus Brucella—possibly a variant of Br. melitensis. This finding provided a basis for research on control and treatment of the disease. The present paper describes studies on one aspect of this problem, the chemotherapy of affected rams. 相似文献
10.
Isolation of leptospira hardjo from the opossum (trichosurus vulpecula) Extract Sir, — In 1971 and 1972 the Department of Health and the Ministry of Agriculture and Fisheries conducted surveys on the incidence of leptospirosis among fanners and their stock on the Hauraki Plains. As a result, Leptospira hardjo was identified for the first time in New Zealand, being isolated from humans (Christmas et al., 1974) and from dairy cattle (Lake, 1973). Evidence to date suggests that most human infections in New Zealand, whether of L. hardjo or of other serotypes, are contracted while milking. 相似文献
11.
J. Mullins 《New Zealand veterinary journal》2013,61(4)
Abstract Extract Robins and Shapcott (1954) recorded cases of presumed acorn poisoning in sheep. 相似文献
12.
13.
I.P. McCausland 《New Zealand veterinary journal》2013,61(9):160-166
Abstract Extract Information about diseases in domestic fowls in New Zealand is contained in two books (Anon., 1965; Anon., 1971). The following diseases have been the subject of separate reports: Salmonella newington infection (Flannery, 1954); lead poisoning (Salisbury et al, 1958); Ornithonyssus sylviarum infestation (Thomas and Watson, 1958); infectious laryngotracheitis (Webster, 1959); mycoplasmosis (Pohl, 1966); infectious bronchitis (Pohl, 1967); uraemia (Pohl, 1968); coccidiosis (Pohl, 1969); vibriosis (Pohl, et al, 1969) and capillariasis (Rickard and Pohl, 1969). 相似文献
14.
R.V. Brunsdon M.Sc Ph.D. 《New Zealand veterinary journal》2013,61(9):203-212
Abstract Extract The results of recent New Zealand studies (Brunsdon, 1968, 1969) have indicated the potential pathogenicity of trichostrongyle worm infection in calves reared on pasture underdairy-type management and have confirmed overseas findings regarding difficulties associated with- the- diagnosis of trichostrongyle disease in general and of the various syndromes of ostertagiasis in particular (Anderson et al., 1965; Michel, 1968). 相似文献
15.
Abstract Extract Sir:— In the recent letter from N. Inglis,(1) an infection by Leptospira icterohaemorrhagiae in deer is postulated on the basis of serological evidence. Results of antibody testing with other serovars of Leptospira would be most informative and would reveal cross-reactions, which are known to occur freyuently. Further, the strain of L. icterohaemorrhagiae antigen and the type of test used would be of great interest to readers. Seroconversion to L. icterohaemorrhagiae serovar copenhageni, has been well documented since 1951.(2) 相似文献
16.
Abstract Extract Drake et al. (1960) have shown that selenium will control outbreaks of lamb and hogget ill-thrift on the pumice soils of the Rotorua-Taupo area. As an ill-thrift problem also exists in calves on the newly-broken-in farms in the same area, it was decided to investigate the effect of oral selenium and other minerals in the control of this problem. 相似文献
17.
S.C. MacDiarmid 《New Zealand veterinary journal》2013,61(10):165-166
Abstract Extract Caprine arthritis encephalitis (CAE) is a disease of goats of any breed, sex and age, caused by a retrovirus related to, but distinct from, the maedi-visna virus which affects sheep.(4) (10) Both infections are included among the so-called slow virus diseases which are characterised by a long incubation period, protracted clinical course and persistent infection. Maedi-visna is not present in New Zealand but CAE has been detected in a number of goat flocks. 相似文献
18.
Abstract Extract Sir, — It appears that Drs Marshall et al.(1) have missed the cardinal point of our paper on an unusual serological response in calves after use of a leptospiral vaccine. (2) That point, of course, was that after use of one leptospiral vaccine, but not another, post-vaccination microscopic agglutination titres of calves were indistinguishable from post-infection titres, whatever the actual titres may have been. 相似文献
19.
Abstract Extract Madam:—I read with interest the letter Fu et al.(3in which they state that “Preliminary investigations on this stud have indicated that equine herpesvirus type 1 (EHV1) and type 2 (EHV2) were frequently isolated and might be the initiators of the respiratory disease observed”. Additional evidence that links EHV2 (equine cytomegalovirus or slowly growing equine herpesvirus) to equine respiratory disease will be important. There is some evidence and a very high level of suspicion that recurrent respiratory disease, malaise and poor performance are associated with EHV2 but providing definite evidence has been elusive and tends to be confounded by the fact that EHV2 can be isolated from more than 70% of horses, in some populations at least, but unassociated with recognisable disease. 相似文献
20.
F.J.A. Neilson K.T. Jagusch M.G. Gray K.S. Maclean 《New Zealand veterinary journal》2013,61(9):148-149
Abstract Extract Madam:– The administration of zinc salts to sheep at the time they are exposed to spores of Pithomyces chartarum will reduce the amount of liver damage from the mycotoxin contained in these spores.(7)(10)(11) It is a recommended practice in facial eczema susceptible areas of New Zealand.(9) We wish to report a suspected outbreak of salmonellosis that occurred only in a ZnO-dosed group of trial animals and suggest that there may be an association between ZnO administration and salmonellosis. 相似文献