Use of a controlled-release albendazole capsule in goats     

NC SANGSTER  JM RICKARD  GH COLLINS  DR HENNESSY  JW STEEL 《Australian veterinary journal》1992,69(3):67-68

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Colour mutant alopecia in a Kelpie ×Border Collie dog     

JW FINNIE  VL THAM 《Australian veterinary journal》1993,70(10):388-389

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Reply     

SE RIDGE  JW GALVIN 《Australian veterinary journal》2005,83(12):767-767

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Perivascular wall tumour presenting as pastern mass in a Standardbred gelding     

M Stutsel  M Gimeno  A Young  JW Bell  N Horadagoda 《Australian veterinary journal》2023,101(11):445-448

A 2-year-old Standardbred gelding was referred for a mass on the palmaromedial right front pastern which was accompanied by progressively worsening lameness. The mass was firm to palpation and covered by normal skin. Ultrasonographically, a smooth encapsulated mass was present, medial to the flexor tendons and palmar to the neurovascular bundle. Because of a poor prognosis for future athletic performance without surgical or chemotherapeutic intervention and economic constraints preventing further diagnostics and treatment, the horse was euthanised. Post-mortem magnetic resonance imaging, histopathology and immunohistochemistry revealed the mass to be a perivascular wall tumour, the first record of such a neoplasia in the horse.  相似文献   

SMALL AERIALS AND THE STRENGTH OF WIRELESS SIGNALS     

Waggoner CW 《Science (New York, N.Y.)》1914,39(1004):463

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Impact of Endocrine‐Disrupting Chemicals on Reproductive Function in Zebrafish (Danio rerio)          下载免费PDF全文

Y Huang  XL Wang  JW Zhang  KS Wu 《Reproduction in domestic animals》2015,50(1):1-6

The prevalence of endocrine‐disrupting chemicals (EDCs) in the aquatic environment has been associated with the wide detection of alterations in the development and physiology of vertebrates. Zebrafish, as a model species, has been extensively used in toxicological research. In this review, we focus on recent published evidence of the harmful effects of EDCs on reproductive function in zebrafish, including skewed sex ratio, immature gonads, diminished sexual behaviour, decreased sperm count, reduced spawning and fertilization. These impairments mostly result from disruption to sex‐steroid hormones induced by endocrine disruptors. We also discuss other effects of exposure to EDCs. In EDC exposure research, despite incomplete assessments of altered gonad histopathology and sexual behaviour, these present potential effective biomarkers or pathways for evaluating the reproductive function in zebrafish on EDC exposure. To date, the pernicious effects of some EDCs on the reproductive performance in laboratory zebrafish are well understood; however, similar alterations remain for further determination in wild‐type fish and more kinds of EDCs. More studies should be performed under established scientific regulatory criteria to investigate the impact of EDCs on reproduction in zebrafish. Moreover, further research is required to explain the definite mechanism of sexual differentiation, which helps in understanding the shift of sexual phenotype with EDC exposure.  相似文献   

The prevalence of itchmite, Psorergates ovis, among sheep flocks with a history of fleece derangement     

PW JOHNSON  JW PLANT  JC BORAY  SC BLUNT  PJ NICHOLLS 《Australian veterinary journal》1990,67(4):117-120

An investigation of sheep flocks in the main sheep raising areas of New South Wales showed that the itchmite Psorergates ovis was frequently associated with fleece derangement. In 26 of the 41 flocks examined, P. ovis was the only ectoparasite detected. P. ovis and the sheep body louse Damalinia ovis, were found in 5 flocks. No external parasites were found on sheep examined from the 10 remaining flocks. The type of fleece derangement most frequently recorded was rubbing which in some cases was combined with areas of chewed fleece. Among flocks, there were positive relations between the prevalence of fleece derangement and prevalence of itchmite or scurf and between itchmite count and mean scurf score. Within flocks, itchmite infested sheep or sheep with scurf had higher prevalences of fleece derangement than sheep on which no mites or no scurf were found. Itchmite infested sheep had a higher prevalence of scurf than those with no detectable mite infestation. There were no significant differences in itchmite populations or fleece derangement between untreated flocks and flocks treated with synthetic pyrethroids, organophosphates or arsenic and rotenone.  相似文献   

Chlamydiosis in workers at a duck farm and processing plant   总被引：4，自引：0，他引：4  

DG HINTON  A. SHIPLEY†  JW GALVIN‡  JT HARKIN‡  RA BRUNTON† 《Australian veterinary journal》1993,70(5):174-176

SUMMARY An outbreak of chlamydiosis was Investigated in workers at a duck farm and processing plant during winter 1989. Chlamydia psittaci was isolated from ducks, but there was little evidence of clinical chlamydiosis in the ducks. Serological tests showed that 76% of workers had been exposed to Infection, 12% recently, 16% had not been exposed and 8% had inconclusive test results. There was a strong association (P < 0.05) between years of employment and exposure to Infection. Infection appeared to be contracted during the first year of employment. Measures were Implemented to reduce shed contamination and control rodents and wild birds. At the same time, ducks were medicated, the processing plant was modified, work practices were altered and workers were advised about chlamydiosis to reduce the risk of human infection.  相似文献   

The hatching of gypsy moth eggs,a phenological model     

Paul E Waggoner 《Agricultural and Forest Meteorology》1984,33(1):53-65

The skewed course of hatching of gypsy moth eggs is represented by a mathematical model embodying the conception that the eggs begin at location 0 in development space and progress at a rate that is the reciprocal of the time when the first eggs hatch because they reach location 1 in space. During their progress, a daily fraction is delayed for a period and then progresses again from the location in space from which it was delayed. Theoretically, the course of hatching is represented by a Poisson function, with the usual mean replaced by the product of the daily fraction delayed and the time of first hatch. A time referred to the time of first hatch and adjusted for the period of delay replaces the usual number whose frequency is calculated. Skewness significantly exceeded the expected 0 of the Normal curve in 79% of 91 experiments at steady temperature, whereas it exceeded the expected skewness of the Poisson in only 35%. The times of first hatch and of delay and the daily fraction delayed changed in an orderly fashion from 12 to 33°C. In 43 experiments with changing temperature in the laboratory, the course of hatching was predicted by numerical integration of the parameters observed at steady temperature. The standard deviation of the difference between observation and prediction was $\text{2}\text{3}$ day for the time of first hatch and the mean time of individual hatches; it was $\text{1}\text{2}\text{3}$ days-squared for the variance and $\text{1}\text{2}$ unit for the skewness. In six outdoor experiments from spring to autumn, the entire courses of hatching were predicted reasonably well, and the means were predicted more consistently than by a method of degree-days.  相似文献   

Ozone uptake by bean leaves   总被引：4，自引：0，他引：4  

S Rich  P E Waggoner  H Tomlinson 《Science (New York, N.Y.)》1970,169(940):79-80

The removal of ozone from the air by bean leaves is regulated by the same factors that control the exchange of water vapor between leaves and the atmosphere.  相似文献