Very Virulent Infectious Bursal Disease Virus Produces More-Severe Disease and Lesions in Specific-Pathogen-Free (SPF) Leghorns Than in SPF Broiler Chickens [0.03%]
非常毒力的传染性法氏囊病病毒比无特定病原供菌（SPF）勒克洪鸡在无特定病原饲养（SPF）肉鸡中产生更严重的疾病和损伤
Mariana Sá e Silva,Daniel R Rissi,David E Swayne
Mariana Sá e Silva
Infectious bursal disease virus (IBDV) is an important pathogen of chickens causing negative economic impacts in poultry industries worldwide. IBDV has a variable range of virulence, with very virulent (vvIBDV) strains being responsible for...
Effects of T-2 Toxin on Turkey Herpesvirus-Induced Vaccinal Immunity Against Marek's Disease [0.03%]
T-2毒素对火鸡疱疹病毒疫苗免疫后的马立克氏病免疫力的影响
E Kufuor-Mensah,W M Reed,S Sleight et al.
E Kufuor-Mensah et al.
T-2 toxin, a very potent immunotoxic Type A trichothecene, is a secondary metabolite produced primarily by Fusarium spp., which grows on cereal grains and can lead to contaminated livestock feed. Repeated exposure to T-2 toxin has been show...
Heat Production and Energy Efficiency of Broilers Infected With Necrotic Enteritis [0.03%]
肉鸡感染坏死性肠炎的产热和能量效率研究
Shawkat A M&#x;Sadeq,Shu-Biao Wu,Mingan Choct et al.
Shawkat A M&#x;Sadeq et al.
Necrotic enteritis (NE) in poultry is the most important bacterial disease in terms of economic losses. The present study was conducted to evaluate the effect of an experimental challenge with necrotic enteritis on respiration and heat prod...
Association of Beta2-Positive Clostridium perfringens Type A With Focal Duodenal Necrosis in Egg-Laying Chickens in the United States [0.03%]
美国产蛋鸡A型芽胞梭菌β2亚群与肠道 focal duodenal necrosis的关联性研究
M França,M A Barrios,L Stabler et al.
M França et al.
Focal duodenal necrosis (FDN) is a poorly understood intestinal disease of egg layers, and has been associated with drops in egg production and decreased egg weights. The etiology of this disease is still unknown, but the condition has been...
Characterization of Seven Outbreaks of Hemorrhagic Hepatopathy Syndrome in Commercial Pullets Following the Administration of a Salmonella Enteritidis Bacterin in California [0.03%]
四川7起因使用沙门氏菌肠炎亚型疫苗后肉鸡出血性肝病综合症的爆发特征分析
S Carnaccini,H L Shivaprasad,G Cutler et al.
S Carnaccini et al.
Between April 2013 and April 2015, seven flocks belonging to three different major commercial egg producers inCalifornia experienced a mild increase in mortality 2 to 3 wk after administration of Salmonella Enteritidis bacterins. Strains of...
Efficacy of a Recombinant Turkey Herpesvirus H5 Vaccine Against Challenge With H5N1 Clades 1.1.2 and 2.3.2.1 Highly Pathogenic Avian Influenza Viruses in Domestic Ducks (Anas platyrhynchos domesticus) [0.03%]
一种重组火鸡疱疹病毒H5疫苗对家鸭(H5N1 1.1.2和2.3.2.1致病性禽流感病毒)的保护效力研究
Mary J Pantin-Jackwood,Darrell R Kapczynski,Eric DeJesus et al.
Mary J Pantin-Jackwood et al.
Domestic ducks are the second most abundant poultry species in many Asian countries and have played a critical role in the epizootiology of H5N1 highly pathogenic avian influenza (HPAI).In this study, the protective efficacy of a live recom...
A Real-Time Reverse-Transcription Polymerase Chain Reaction for Differentiation of Massachusetts Vaccine and Brazilian Field Genotypes of Avian Infectious Bronchitis Virus [0.03%]
一种用于区分马萨诸塞疫苗株和巴西野毒株的鸡传染性支气管炎病毒的实时反转录聚合酶链式反应方法
Aline Padilha de Fraga,Nilo Ikuta,André Salvador Kazantzi Fonseca et al.
Aline Padilha de Fraga et al.
The avian infectious bronchitis virus is classified into serotypes or genotypes (or both) in different poultry-producing countries of the world. In Brazil, Massachusetts type (Mass), used as a live vaccine, and local field Brazilian variant...
Incidence, Severity, and Welfare Implications of Lesions Observed Postmortem in Laying Hens from Commercial Noncage Farms in California and Iowa [0.03%]
加州和爱荷华州商用非笼养产蛋鸡的尸体解剖发现的发病率、严重程度及其福利影响
Anya S Kajlich,H L Shivaprasad,Darrell W Trampel et al.
Anya S Kajlich et al.
The egg industry is moving away from the use of conventional cages to enriched cage and noncage laying hen housing systems because of animal welfare concerns. In this study, the prevalence and severity of lesions in noncage laying hens from...
Pathology and Molecular Characterization of Escherichia Coli Associated With the Avian Salpingitis-Peritonitis Disease Syndrome [0.03%]
与鸟类输卵管炎腹膜炎疾病综合征相关的致病性大肠杆菌的病理和分子特征分析
Rikke Heidemann Olsen,Magne Bisgaard,Jens Peter Christensen et al.
Rikke Heidemann Olsen et al.
Outbreaks of salpingitis and peritonitis cause major economic losses due to high mortality, reduced egg-production, and culling. The aim of the present study was to characterize, in detail, lesions associated with increased mortality in lay...