Results of experimentation with ivermectin (Ivomec) on parasites of camels in Niger     

P Tager-Kagan  B Robin 《Revue d'élevage et de médecine vétérinaire des pays tropicaux》1986,39(3-4):333-340

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From the american horse Protection Association, Inc., Washington, DC     

Robin C. Lohnes  Executive Director 《Journal of Equine Veterinary Science》1993,13(12):673

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Diode laser transscleral cyclophotocoagulation for the treatment of primary glaucoma in 18 dogs: a retrospective study     

Chloe Hardman  Robin G. Stanley 《Veterinary ophthalmology》2001,4(3):209-215

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Cross-resistance to pyrethroids and other insecticides in Aedes aegypti     

Peter R. Chadwick  Robin Slatter  Marcus J. Bowron 《Pest management science》1984,15(2):112-120

Two substrains of Aedes aegypti, already resistant to DDT and pyrethroids, were further selected using either DDT or permethrin by mass exposure of the females only. DDT selection over 14 generations raised the resistance to DDT so far that no accurate LC₅₀ values could be determined. Selection with permethrin raised the tolerance to an irregular plateau 7–10 times the original. DDT selection in the adults raised the DDT resistance of the larvae, but this could be partly overcome using a dehydrochlorinase inhibitor. The resistance to pyrethroids was increased but tolerance of dieldrin, malathion and propoxur compounds was little changed. Permethrin selection of the adults raised resistance to pyrethroids more than DDT selection but also increased DDT resistance. Similar patterns were found for the larval insects. A strain from Demerara in Guyana showed both DDT and pyrethroid resistance, including strong resistance to pyrethrins together with dieldrin and propoxur. It was concluded that two major independent resistance mechanisms existed in the selected strains, a dehydrochlorinase affecting DDT alone, and an unknown mechanism, probably nerve insensitivity (kdr) affecting both DDT and pyrethroids.  相似文献   

Legg-Perthes Disease in the Dog: The Histological and Associated Radiological Changes     

Robin  Lee 《Veterinary radiology & ultrasound》1974,15(1):24-27

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Observations on the immunization against swine erysipelas. II. The value of various methods of infection for the exposure tests     

G Wellmann 《Berliner und Münchener tier?rztliche Wochenschrift》1966,79(24):474-477

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A case of extended necrosis of the skin, ear and tail in a pig after experimental erysipelas infection     

G Wellmann  H Liebke 《Berliner und Münchener tier?rztliche Wochenschrift》1967,80(16):308-309

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Occurrence and distribution of <Emphasis Type="Italic">Phytophthora</Emphasis> species in European chestnut stands,and their association with Ink Disease and crown decline     

A.?M.?Vettraino  O.?Morel  C.?Perlerou  C.?Robin  S.?Diamandis  A.?VanniniEmail author 《European journal of plant pathology / European Foundation for Plant Pathology》2005,111(2):169-180

The Phytophthora complex associated with Castanea sativa Mill. was investigated in five European countries in 35 regions and with respect to various domestication levels. Annual precipitation and length of drought season were the main parameters that regulated the presence of Phytophthora species in the chestnut stands. Seven species of Phytophthora were detected; three of these, P. megasperma, P. cryptogea and P. syringae had not been previously reported on sweet chestnut. P. cinnamomi. P. cambivora and P. citricola were most frequently isolated. P. cinnamomi and P. cambivora were the species significantly associated with declining trees with symptoms of Ink Disease. P. cinnamomirequired distinct ecological conditions compared to the other species. P. cinnamomi was never detected in sites characterized by minimum temperatures below 1.4 °C, maximum temperature above 28 °C, or soil pH below 5.4. The results obtained provide useful information for modeling the probability of Ink Disease, crown decline and associated Phytophthora species in chestnut groves in global climatic change scenarios.  相似文献   

A case study of capture-recapture methodology using scrapie surveillance data in Great Britain     

del Rio Vilas VJ  Sayers R  Sivam K  Pfeiffer D  Guitian J  Wilesmith JW 《Preventive veterinary medicine》2005,67(4):303-317

We applied capture–recapture methodology (CRC) to data from three surveillance sources (statutory notification, abattoir survey (AS) and fallen stock (FS) survey) to estimate the number of holdings infected with scrapie in Great Britain and to assess the sensitivity of the surveillance network. Between January 1, 2002 and March 31, 2003, 144 holdings were identified by the three sources. Using CRC modelling techniques, we estimated a minimum lower bound for the total number of holdings infected as 642. A biologically plausible positive dependence between the statutory reporting and the fallen stock survey was found statistically significant. The sensitivity of the three sources combined was very low. The integration of the three overlapping sources provided a better understanding of the interactions within the surveillance network. However, the scarcity of the data and reduced overlapping among sources only allowed for very cautious inferences to be drawn about the true proportion of scrapie affected holdings in the national population. Future surveys and surveillance activities should be planned such that the resulting data can be used more effectively as part of CRC modelling approaches.  相似文献   

Factors associated with time to neonatal diarrhoea in French beef calves     

Lorino T  Daudin JJ  Robin S  Sanaa M 《Preventive veterinary medicine》2005,68(2-4):91-102

A prospective study was carried out on 92 randomly selected beef herds in the Midi-Pyrénées region in France. The objective was to determine factors associated with time to neonatal gastroenteritis. By taking into account the “intra-herd” correlation in failure time (in the semiparametric Cox model), we identified 12 management risk factors associated with hazard of diarrhoea. Some previously have been identified, but “new” risk factors were feeding of corn silage and the incidence of diarrhoea in the last season. We used the two main approaches which are often reviewed: marginal and frailty Cox models. Our results show that these two models give different parameter estimates, so the choice of the model remains crucial.  相似文献