virologic findings in selected free-range mule duck farms at high risk for avian influenza infection.prevalence of avian influenza infection in free-range mule ducks (a cross between muscovy [cairina moschata domesticus] and pekin ducks [anas platyrhychos domesticus]) is a matter of concern and deserves particular attention. thus, cloacal swabs were collected blindly from 30 targeted mule flocks at 4, 8, and 12 wk of age between october 2004 and january 2005. they were stored until selection. on the basis of a positive h5 antibody detection at 12 wk of age with the use of four h5 antigens, the ...200717494595
evaluation of newcastle disease virus immunoassays for waterfowl using a monoclonal antibody specific for the duck immunoglobulin light the present study a monoclonal antibody (mab 14a3) was tested for its reactivity against serum immunoglobulin y (igy) of several waterfowl species, and subsequently for its applicability as anti-species antibody in common immunoassays. western blot analyses demonstrated its broad cross-reactivity with the serum igy light chain of different duck species: muscovy duck (cairina moschata), mallard (anas platyrhynchos), white-winged wood duck (asarcornis scutulatus), common pintail (dafila acuta). ...200818568660
evaluation of an indirect enzyme-linked immunosorbent assay to study the specific humoral immune response of muscovy ducks (cairina moschata) and domestic geese (anser anser var. domestica) after vaccination against newcastle disease this study, an indirect newcastle disease virus enzyme-linked immunosorbent assay (elisa) for waterfowl was evaluated concerning its efficiency and its suitability to monitor the antibody response in muscovy ducks (cairina moschata) and domestic geese (anser anser var. domestica) following vaccination with a commercial inactivated ndv vaccine for chickens. three weeks after vaccination seroconversion was already evident in the elisa. comparison of the elisa results with those of the haemagglu ...200919322707
genomic sequence of an avian paramyxovirus type 1 strain isolated from muscovy duck (cairina moschata) in china.the complete sequence of an avian paramyxovirus type 1 (apmv-1) strain, fp1/02, isolated from muscovy duck in china, was determined. sequence analysis indicated that the complete genome of strain fp1/02 contained 15,192 nucleotides (nt), following the rule of six. the genome contained an extra 6-nt insertion in the non-coding region of the np gene when compared with other apmv-1 strains, such as strains la sota and beaudette c. the cleavage site of the f protein was (112)r-r-q-k-r↓f(117), indica ...201021152939
characterization of velogenic newcastle disease viruses isolated from dead wild birds in serbia during 2007.avian paramyxoviruses type 1 or newcastle disease viruses (ndv) are frequently recovered from wild birds and such isolates are most frequently of low virulence. velogenic ndv are usually recovered from poultry and only occasionally from wild birds. five ndv isolates were obtained from carcasses of four wild bird species during 2007 in serbia: mallard (anas platyrhynchos), eurasian sparrowhawk (accipiter nisus), feral rock pigeon (columba livia), and eurasian collared dove (streptopelia decaocto) ...201121441197
immune responses and protection against h5n1 highly pathogenic avian influenza virus induced by the newcastle disease virus h5 vaccine in ducks.ducks play an important role in the epidemiology of avian influenza, and there is a need for new avian influenza vaccines that are suitable for mass vaccination in ducks. the immune responses as well as highly pathogenic avian influenza (hpai) h5n1 protection induced by a newcastle disease virus (ndv) vector expressing an h5n1 hemagglutinin (rndv-h5) were investigated in mule ducks, a hybrid between muscovy (cairina moschata domesticus) males and pekin (anas platyrhynchos domesticus) females. im ...201223402116
gexp analyzer-based multiplex reverse-transcription pcr assay for the simultaneous detection and differentiation of eleven duck viral pathogens primarily include the avian influenza virus (aiv) subtypes h5, h7, and h9; duck hepatitis virus (dhv); duck tembusu virus (dtmuv); egg drop syndrome virus (edsv); duck enteritis virus (dev); newcastle disease virus (ndv); duck circovirus (ducv); muscovy duck reovirus (mdrv); and muscovy duck parvovirus (mdpv). these pathogens cause great economic losses to china's duck breeding industry.201526518004
prime-boost vaccination with recombinant h5-fowlpox and newcastle disease virus vectors affords lasting protection in spf muscovy ducks against highly pathogenic h5n1 influenza virus.vaccination protocols were evaluated in one-day old muscovy ducklings, using an experimental newcastle disease recombinant vaccine (vndv-h5) encoding an optimized synthetic haemagglutinin gene from a clade 2.2.1 h5n1 highly pathogenic (hp) avian influenza virus (aiv), either as a single administration or as a boost following a prime inoculation with a fowlpox vectored vaccine (vfp89) encoding a different h5 hp haemagglutinin from an irish h5n8 strain. these vaccination schemes did not induce det ...201323845804
different duck species infected intramuscularly with duck-origin genotype ix apmv-1 show discrepant mortality and indicate another fatal genotype apmv-1 to ducks.isolations of genotype ix (gix) avian paramyxovirus type 1 (apmv-1) from various bird species have been more common recently, with isolates showing variable pathogenicity in different species of poultry. here we sequenced the genome of a muscovy duck origin gix virus strain xbt14 and characterized the virulence and pathogenicity of this isolate in chickens and ducks. the genome sequence of strain xbt14 is 15,192 nt in length, containing multiple basic amino acids at the fusion protein cleavage s ...201728301247
the response of ducks to v4 newcastle disease virus and its transmission to contact ducks and domestic chickens.experimental infection of muscovy ducks with v4 strain of newcastle disease virus was undertaken to determine the response of the ducks to the virus and the possibility of virus transmission to ducks and chickens in village like conditions. twelve ducks were randomly and equally divided into three groups of control, inoculated and in-contact. additionally, the chickens were placed into two groups of four animals each, namely in-contact and control. the inoculated and in-contact ducks and in-cont ...201425568709
phylogenetic analysis of newcastle disease viruses isolated from asymptomatic guinea fowls (numida meleagris) and muscovy ducks (cariana moscata) in nigeria.four newcastle disease virus isolates were recovered from asymptomatic guinea fowl (numida meleagris galeata) and muscovy ducks (cariana moscata). for the purpose of molecular identification and phylogeny, phylogenetic characterization was performed to identify the pathotypes. all four viruses had a cleavage motif (112)rrqkrf(117) which is characteristic of virulent strains. the isolates grouped with viruses previously reported as sub-lineage 5 g from chickens in nigeria. this study report for t ...201322618191
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