Sichuan Provincial Center for Animal Disease Prevention and Control

Chengdu, China

Sichuan Provincial Center for Animal Disease Prevention and Control

Chengdu, China
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Du Z.-J.,Sichuan Agricultural University | Huang X.-L.,Sichuan Agricultural University | Chen D.-F.,Sichuan Agricultural University | Wang K.-Y.,Sichuan Agricultural University | Deng Y.-Q.,Sichuan Provincial Center for Animal Disease Prevention and Control
Journal of Animal and Veterinary Advances | Year: 2011

Skin Ulcer Disease (SUD) is a new disease in Schizothorax prenati. The purpose of this study was to elucidate the etiology of SUD in recent outbreaks in Sichuan province, China. One dominant bacteria (D060501) was isolated from the diseased Schizothorax prenanti with typical skin ulcer. It was identified as Aeromonas hydrophilaby morphological features, physiological and biochemical characteristics and 16S rDNA sequence. The bacterium was very sensitive to chloramphenicol and gentamicin and resistant to tetracycline, SMZ, doxycychne and carbemcillin. The virulence of the bacteria to Schizothorax prenanti was checked by challenged experiment. © 2011 Medwell Journals.

Du Z.,Sichuan Agricultural University | Huang X.,Sichuan Agricultural University | Wang K.,Sichuan Agricultural University | Deng Y.,Sichuan Provincial center for Animal Disease Prevention and Control | And 3 more authors.
African Journal of Biotechnology | Year: 2011

A pthogenic bacterium Stenotrophomonas maltophilia was isolated from channel catfish (Ictalunes punctatus). We studied the pathogenicity of the extra cellular protease (ECPase) of S. maltophilia. The extra cellular protease was purified by 70% ammonium sulfate fractionation and DEAE-Sephadex A 50 and injected intraperitoneally to mice. The pathological changes of injected mice were observed. The injected mice showed different lethal rate and their typical symptoms include the demonstration of tachypnea and downcast, with mucous stool on their anuses. The tested animals showed visible lesions in livers, spleens, stomachs and intestines. They had serious gastroenteritis and flatulence. Mural stomach and intestines became thin with pallide-flavens mucus. The spleen was tumescent and hemorrhaging. The hepar was seriously tumid and had necrotic regions. The color of the kidney became light and the lung had no obvious change. The LD50 of the ECPase was 4.33 ug/g. © 2011 Academic Journals.

Huang X.-L.,Sichuan Agricultural University | Wang K.-Y.,Sichuan Agricultural University | Zong-Jun D.,Sichuan Agricultural University | Geng Y.,Sichuan Agricultural University | Deng Y.-Q.,Sichuan Provincial center for Animal Disease Prevention and Control
African Journal of Biotechnology | Year: 2010

Aeromonas veronii is a common pathogen in both humans and animals. It exists in the environment we live. Many reports showed it could lead to human infection but few demonstrated its effect on aquatic animals, especially Channel Catfish (Ictalurus lunetaus). Here, A. veronii was isolated from an acute death case of Channel Catfish in Southwestern China. This Gram-negative bacillus was identified by 16S rRNA sequencing. Antimicrobial susceptibility was also conducted to guide the treatment of the disease. © 2010 Academic Journals.

Huang X.,Sichuan Agricultural University | Duan J.,Sichuan Agricultural University | Fan W.,Sichuan Agricultural University | Duan Y.,Sichuan Agricultural University | And 6 more authors.
Israeli Journal of Aquaculture - Bamidgeh | Year: 2016

Chromatophoromas, cutaneous pigment cell tumors that originate from skin dermochromatophores of fish, amphibians, and reptiles are rarely reported. The four basic pigment cell types found in poikilothermic vertebrates are melanomas (melanophoromas), iridophoromas, xanthophoroma, and erythrophoromas. In the present study, we diagnosed spontaneous lesions in the skin of a group of ornamental colored crucian carp, Carassius auratus, from an artificial ornamental fish pond located in Southeastern China. Necropsy, paraffin section, and hematoxylin-eosin staining methods were used to evaluate the neoplasm. Histological changes were observed and photographed using a Nikon microscope image system. The results showed oval nodular masses observed on the various parts of the body including flank, caudal peduncle, and tail. Histologically, neoplastic stromata were composed of bundles of compact parallel arrays cells. Dendric or spindle-shaped erythrophoroma cells were arranged as sheets or clusters with interlacing connective tissue. Congested capillaries and focal areas of hemorrhage were interspersed through the tissue. The tumor foci were infiltrated with neoplastic cells, inflammation cells, and necrotic tissue cells. Some olive to red intracytoplasmic pigment with polarized light could be seen on many parts of the erythrophoroma tissue. From the gross and histological pathology, we could conclude that the colored crucian carp suffered erythrophoromas. Further study is needed to confirm the etiology of this case. © 2015, Israeli Journal of Aquaculture - Bamidgeh. All rights reserved.

Li M.-W.,Guangdong Ocean University | Song H.-Q.,Lanzhou Veterinary Research Institute | Li C.,Sichuan Provincial Center for Animal Disease Prevention and Control | Lin H.-Y.,Guangdong Ocean University | And 3 more authors.
International Journal of Infectious Diseases | Year: 2011

Sparganosis is an infection of humans and animals caused by the plerocercoid larvae (spargana) of various diphyllobothroid tapeworms belonging to the genus Spirometra. Sparganosis has been reported sporadically around the world, and a higher prevalence of the disease occurs in several Asian countries, including South Korea, Japan, Thailand, and China. To date, a total of more than 1000 cases of human sparganosis have been reported in 25 provinces in mainland China. Sparganosis is emerging in mainland China because of food consumption habits and the unusual practice of treating wounds or other lesions with poultices of frog or snake flesh. This article reviews the current status of sparganosis in mainland China. Increased public awareness about the risks associated with eating raw food and strengthened food safety measures are needed. © 2010 International Society for Infectious Diseases.

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