In Japan, no influenza epidemics have been recognized in domestic fowls since the last fowl plague outbreak caused by H7N7 influenza virus in chickens in 1924-1926. On the other hand, influenza viruses of different subtypes have been isolated from wild ducks, geese, and swans. Antigenic and genetic analyses of H3 influenza viruses isolated from migratory ducks captured on the Pacific flyway in ...

Mottled ducks Anas fulvigula are nonmigratory and primarily depend on habitats associated with coastal marshes of the Gulf Coast for their entire life cycle. Much of remaining available coastal marsh habitats of the Texas Gulf Coast are managed by state and federal agencies. The Texas Gulf Coast breeding population of mottled ducks has recently declined dramatically. To aid in development of ma...

<p><strong>Objective:</strong> To determine the association of GH gene diversity with growth traits and to obtain morphometric characteristics in Kerinci ducks.</p><p><strong>Methods:</strong> The research method is an experiment using 96 blood samples duck blood. methods included data collection on quantitative (body weight, body weight gain, measureme...

We investigated liver protease activity in force-fed and non-force-fed ducks using zymography gels to better understand mechanisms underlying liver steatosis in palmipeds. Male Muscovy and Pekin ducks were slaughtered before and after a short period (13 d) while they were conventionally fed or force fed. The force-fed regimen contained a high level of carbohydrates and was delivered in large do...

Cowbirds (Molothrus ater) and grackles (Cassidix mexicanus) infected with muscle cysts of Sarcocystis were fed to opposums (Didelphis virginiana) and fecal sporocysts from the latter were given to sparrows (Passer domesticus, Family Ploceidae), canaries (Serinus canarius, Family Fringillidae) and ducks (Anas platyrhynchos, Family Anatidae). Asexual parasites were found in the endothelium of spa...

Two velogenic Newcastle disease viruses (NDV) obtained from outbreaks in domestic ducks in China were characterized in this study. Phylogenetic analysis revealed that both strains clustered with the class II viruses, with one phylogenetically close to the genotype VII NDVs and the other closer to genotype IX. The deduced amino acid sequence of the cleavage site of the fusion (F) protein confirm...

Duck beak atrophy and dwarfism syndrome (BADS) is a newly emerged disease in China since 2015. In October 2017, an unidentified disease occurred in Cherry Valley ducks, Chongqing municipality, the southwest of China. The affected birds showed short beak and growth retardation clinical signs. The disease caused approximately 20.00% morbidity and serious weight loss due to retarded growth. In ord...

--We constructed a phylogeny for the dabbling ducks (tribe Anatini) based on cytochrome-b and ND2 mitochondrial gene DNA sequences. This phylogeny differed in several important respects from a morphological phylogeny developed by Livezey (1991), including the distinctiveness ofthe blue-winged ucks from other dabbling ducks, the inclusion of the genus Tachyeres and exclusion of Callonetta from t...