Animal behavior: experimental behavioral ecology and sociobiology     

West-Eberhard MJ 《Science (New York, N.Y.)》1986,231(4733):64-65

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Thiokol had three concerns about shuttle launch     

Smith RJ 《Science (New York, N.Y.)》1986,231(4742):1064

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Scientific american sale to german publisher okayed     

Culliton BJ 《Science (New York, N.Y.)》1986,233(4762):416

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Shuttle Inquiry Focuses on Weather, Rubber Seals, and Unheeded Advice: Thiokol engineers warned against launching because of doubts about the performance of seals between segments of the booster rocket at low temperatures     

Smith RJ 《Science (New York, N.Y.)》1986,231(4741):909-911

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Equine laryngeal hemiplegia. Part III. A teased fibre study of peripheral nerves     

Cahill JI  Goulden BE 《New Zealand veterinary journal》1986,34(11):181-185

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Equine laryngeal hemiplegia. Part V. Central nervous system pathology     

Cahill JI  Goulden BE 《New Zealand veterinary journal》1986,34(11):191-193

Evidence of long central nerve fibre degeneration (axonal spheroids) in the lateral cuneate nuclei was found in all eight Thoroughbreds affected clinically and subclinically with equine laryngeal hemiplegia, but in only one of six control animals. It was considered that these spheroids may signify a central nervous component of the disease process of laryngeal hemiplegia although until further investigations are performed no firm conclusions regarding the relationship of these findings with laryngeal hemiplegia could be made. Examination of the left and right nucleus ambiguus of clinical and subclinical laryngeal hemiplegic horses revealed no pathological alterations.  相似文献   

Evaluation of an enzyme-linked immunosorbent assay (ELISA) for serodiagnosis of infectious bovine rhinotracheitis infection, with results of a preliminary survey     

Durham PJ  Sillars HM 《New Zealand veterinary journal》1986,34(3):27-30

An indirect enzyme linked immunosorbent assay (ELISA) procedure was evaluated against the serum neutralisation test (SNT) for the detection of antibodies to infectious bovine rhinotracheitis virus (bovine herpesvirus type l), using 2028 sera from 166 dairy and 172 beef cattle herds. The results showed the ELISA to give high levels of agreement with the SNT in classifying positive and negative sera (98% and 97% respectively). Such disagreements as did occur involved weakly reactive sera with SNT titres of % or less. A number of sera (n=123) with trace neutralising activity of doubtful diagnostic significance were found to give marginal reactivity with ELISA. ELISA absorbance values were found to be highly correlated with SNT titres (r=0.909) on an overall basis, though agreements were lower with individual sera. The ELISA procedure was quicker, cheaper, and detected more reactors than the SNT. It also allowed results to be obtained with a number of sera which were unsuitable for testing by SNT because of their cytotoxic nature. Analysis of ELISA results showed reactors to be present in 57% of tested sera, representing 81% of cattle herds. Reactor rates for sera and herds in the South Island, (37% and 58%), were significantly lower than for those in the North Island (64% and 88%). Antibody prevalence was also found to be significantly lower in districts having a low annual rainfall (<850 mm), and to be lower in beef cattle than in dairy cattle. A surprising exception to the latter occurred in low rainfall districts, where dairy cattle showed significantly lower reactor rates than local beef animals.  相似文献   

Elephants in war          下载免费PDF全文

Moore J 《The Canadian veterinary journal. La revue veterinaire canadienne》1986,27(8):312-313

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Leptospirosa pomona Abortion Storm in a Cattle Herd in Saskatchewan   总被引：2，自引：1，他引：1       下载免费PDF全文

Kingscote BF  Wilson D 《The Canadian veterinary journal. La revue veterinaire canadienne》1986,27(11):440-442

Abortions occurred in 18% of 131 beef cows and heifers during two months, on a farm in southern Saskatchewan. The losses began two weeks after acute febrile illness and agalactia in a dairy cow to which the beef herd had been exposed. A diagnosis of Leptospira interrogans serovar pomona infection was made on the basis of serology in cows and the finding of leptospires in fetal tissues by fluorescent antibody test. Tentative diagnosis of infectious bovine rhinotracheitis delayed treatment and prophylaxis until infection attained high intensity in the herd and severe losses to the farmer occurred. Abortions ceased after vaccination against pomona and oxytetracycline treatment of pregnant cows, although chronic debility followed the acute phase of the disease in some cows. Recrudescence of infection was suspected four months later, when acute agalactia occurred in one cow and debility in calves and cows was recurring. Pomona infection was not proven, but dihydrostreptomycin treatment and revaccination were applied to the whole herd. Seroconversion and IgM antibody continued to indicate a persistent source of infection and susceptibility in a minority of the population one year after onset. The source of the original infection is believed to have been a carrier beef cow, or a dairy cow which was leptospiruric at the time of contact with the beef herd. With the exception of one aborted calf, no evidence of pomona infection was found outside the farm, in cattle or wild mammals tested serologically within a radius of 30 km, during one year following the outbreak.  相似文献   

The management of epilepsy in dogs     

Evans JM  Croft P 《New Zealand veterinary journal》1986,34(1-2):16

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