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1.
雏鹅实验性缺硒病及高锌对缺硒影响的病理学研究 总被引：7，自引：1，他引：6
１００只一日龄雅安本地白鹅随机分三组，分别喂给低Ｓｅ（含Ｓｅ０．０３１６ｐｐｍ）、低Ｓｅ高Ｚｎ（含Ｓｅ０．３１６ｐｐｍ，Ｚｎ１５００ｐｐｍ）和补Ｓｅ（含Ｓｅ０．０３１６ｐｐｍ＋０．３ｐｐｍ）饲粮，饲喂８周。低Ｓｅ组和低Ｓｅ高Ｚｎ组于第３周至第６周发病、死亡高峰。临诊症状表现为精神沉郁、食欲降低、腹泻、脱水和生长缓慢。特征性的损害为肌胃和骨骼肌变性、坏死和钙化；胰腺萎缩、变性、坏死和纤维化；淋巴免疫 相似文献
2.
A pathological study was conducted on 32 turkeys that died of sudden death with perirenal hemorrhage syndrome. Turkeys were selected from routine necropsy cases in a diagnostic laboratory. A higher incidence was observed in heavy tom turkeys. In addition to the characteristic gross lesions of perirenal hemorrhage, splenomegaly, and pulmonary congestion, turkeys in most cases had a hypertrophic cardiopathy. Microscopic lesions included moderate-to-marked acute passive congestion of all tissues examined (32/32), severe perirenal hemorrhage (32/32), and splenic lymphoid depletion (25/32). Changes in the thyroid follicular epithelium of most birds suggested an increased glandular activity. No lesions suggestive of arterial hypertension were observed. Adenoviral infection was detected in only four of 32 birds. Bacteriological cultures revealed no significant pathogen. Results suggest that sudden death in turkeys with perirenal hemorrhage is caused by an acute congestive heart failure consecutive to a hypertrophic cardiopathy. The perirenal hemorrhage would be a consequence of a severe passive congestion in kidneys. 相似文献
3.
Glávits R Zolnai A Szabó E Ivanics E Zarka P Mató T Palya V 《Acta veterinaria Hungarica》2005,53(1):73-89
Parvovirus infection of Muscovy ducks caused by a genetically and antigenically distinct virus has been reported from Germany, France, Israel, Hungary, some Asian countries and the USA. The pathological changes include those of degenerative skeletal muscle myopathy and myocarditis, hepatitis, sciatic neuritis and polioencephalomyelitis. In the study presented here, day-old and 3-week-old goslings and Muscovy ducks were infected experimentally with three different parvovirus strains (isolates of D-216/4 from the classical form of Derzsy's disease, D-190/3 from the enteric form of Derzsy's disease, and strain FM from the parvovirus disease of Muscovy ducks). All three parvovirus strains caused severe disease in both day-old and 3-week-old Muscovy ducks but in the goslings only the two strains of goose origin (D-216/4 and D-190/3) caused disease with high (90-100%) mortality when infection was performed at day old. Strain FM (of Muscovy duck origin) did not cause any clinical signs or pathological lesions in the goslings. In the day-old goslings and Muscovy ducks the principal pathological lesions were severe enteritis with necrosis of the epithelial cells (enterocytes) of the mucous membrane and the crypts of Lieberkühn, and the formation of intranuclear inclusion bodies. Other prominent lesions included hepatitis and atrophy (lymphocyte depletion) of the lymphoid organs (bursa of Fabricius, thymus, spleen). In goslings infected with the strain originating from the classical form of Derzsy's disease mild myocarditis was also detected. After infection at three weeks of age, growth retardation, feathering disorders, myocardial lesions (degeneration of cardiac muscle cells, lympho-histiocytic infiltration) and hepatitis were the most prominent lesions in both geese and Muscovy ducks. In addition to the lesions observed in the geese, muscle fibre degeneration, mild sciatic neuritis and polioencephalomyelitis were also observed in the Muscovy ducks infected with any of the three parvovirus strains. 相似文献
4.
M. C. Pressanto F. Beccati V. Stefanetti F. Passamonti N. Pilati M. Pepe 《Equine Veterinary Education》2020,32(2):78-78
Multiple septic osteomyelitis, septic thrombi and septic arthritis are recognised as possible complications of sepsis; however, there are few reports of localised pyomyositis in association with septic arterial thrombosis in foals. A 1-month Thoroughbred colt was presented for investigation of acute and progressive left hindlimb lameness. Physical and laboratory examinations were performed. Ultrasonographic, radiographic and computed tomographic examinations revealed the presence of multiple abscesses and areas of osteomyelitis localised to the gluteal muscles, coxal bone and lumbar spine respectively. Considering the poor prognosis, the foal was subjected to euthanasia. Necropsy confirmed the diagnostic imaging findings and revealed the presence of an extensive septic thrombus, affecting the internal iliac artery, and a single pulmonary abscess. Streptococcus equi subsp. zooepidemicus was isolated from all lesions. 相似文献
5.
Outbreaks of influenza were diagnosed in two turkey breeder flocks on the same premises in eastern North Carolina during the "dark-out" period of recycling for a second lay. Clinical history included increased mortality from acute death with no apparent predisposing illness. Mortality attributed to the disease was 4.5% in one flock and 3.3% in the other. Necropsy findings included severe diffuse congestion and edema of both lungs, with little or no pleural exudate. Spleens were moderately to markedly enlarged and mottled, and kidneys were swollen and congested. Microscopic lesions included moderate to severe serofibrinous pneumonia with severe pulmonary congestion. Splenic changes included fibrin deposition and severe congestion, and severe congestion was noted in kidneys. Influenza virus (H1N1) was isolated from pools of tissues including lung, spleen, liver, and kidney, and both flocks seroconverted to influenza (H1N1) virus. 相似文献
6.
L-精氨酸对脂多糖刺激仔鹅生长发育的影响 总被引：1，自引：0，他引：1
本试验旨在研究脂多糖(LPS)刺激所产生的免疫应激对仔鹅早期生长发育的影响及L-精氨酸对免疫应激的缓解作用.选取128只14日龄健康扬州鹅公鹅,随机分为A、B、C、D 4个组,每组4个重复,每个重复8只鹅.A组饲喂基础饲粮,并静脉注射生理盐水;B组饲喂基础饲粮,并注射细菌LPS;C组饲喂添加0.5%L-精氨酸的基础饲粮,并注射LPS;D组饲喂添加1.0%L-精氨酸的基础饲粮,并注射LPS.14日龄逐一称重,并分别于15、17、19日龄进行注射,21日龄时屠宰采样,称量试验鹅活重以及心脏、肝脏、肌胃、脾脏、胸腺、腔上囊的重量.结果表明:1)LPs刺激导致3周龄仔鹅体增重显著下降(P<0.05),而0.5%精氨酸可在一定程度上缓解LPS刺激导致的3周龄仔鹅体增重的下降(P>0.05);2)LPS刺激导致3周龄仔鹅腔上囊重量显著降低(P<0.05),而0.5%精氨酸可在一定程度上缓解LPS刺激导致的腔上囊重量的降低(P>0.05);LPS刺激导致3周龄仔鹅腔上囊指数显著降低(P<0.05);0.5%或1.0%精氨酸使LPS刺激3周龄仔鹅的脾脏指数显著增加(P<0.05);3)LPS刺激导致3周龄仔鹅肠道长度显著减小(P<0.05),而0.5%精氨酸町在一定程度上缓解LPS刺激导致的肠道长度的减小(P>0.05).本试验以仔鹅生长发育为衡量指标,表明适当的精氨酸添加量可以缓解鹅由LPS刺激所产生的免疫应激. 相似文献
7.
1. The study was conducted to evaluate the effects of a dried Bacillus subtilis culture (DBSC) on growth performance and nutrient retention of goslings. 2. A total of 240 goslings were randomly divided into 4 dietary treatments with 6 replicates of 10 goslings per pen from 0 to 4 weeks of age. The 4 treatments consisted of a basal diet containing neither antibiotics nor DBSC (control), basal diet supplemented 5 mg Flavomycin/kg, and basal diet supplemented with 250 or 500 mg DBSC/kg. 3. Body weight and feed consumption were measured with pen as the experimental unit at 14 and 28 d of age, and excreta collections from each pen were carried out to determine nutrient retention ratio during the 4th week. 4. The results showed that the diet supplemented with 250 mg DBSC/kg increased average daily gain (ADG) by 6.9%, reduced average daily feed intake (ADFI) by 3.9%, and improved feed conversion ratio (FCR) by 10.3% in a 0-28 d feeding period, compared with the control diet. However, the diet containing 500 mg DBSC/kg did not effect these performance of goslings. 5. The goslings given the diet with 250 mg DBSC/kg had similar ADG, lower ADFI and significantly lower FCR to or than the goslings fed on the Flavomycin diet. 6. The results also showed that dietary DBSC supplementation improved dry matter and energy retention of goslings. 7. This study indicated that the diet containing a dried B. subtilis culture at 250 mg/kg offered large benefits to the growth performance of goslings, and these benefits could equal or exceed those from Flavomycin. It is suggested that the growth promoting effect of DBSC may be attributed to the improvement in the availability of dietary nutrients. 相似文献
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9.
"Marble spleen disease" of chickens was diagnosed in 22-week-old chickens. Total mortality was 8.9%. Deaths occurred over a period of 2 months. Gross lesions included pulmonary congestion, splenomegaly, hepatomegaly, and congestion of egg follicles. Microscopic lesions included pulmonary congestion and edema, and reticuloendothelial cell hyperplasia of the spleen with concurrent white-pulp necrosis and lymphocyte depletion. The pulmonary lesions were of sufficient intensity to have caused the death of fatally affected birds. Many of the hyperplastic reticuloendothelial cells contained basophilic intranuclear inclusions similar to those that characterize hemorrhagic enteritis of turkeys, marble spleen disease of pheasants, and adenovirus group II splenomegaly of chickens. These characteristic lesions, plus serologic identification of the causal virus, indicate that "marble spleen disease" caused by avian group II adenovirus was affecting the flock under study. This appears to be the first report of death of chickens due to pulmonary congestion and edema caused by spontaneous infection with avian group II adenovirus. 相似文献
10.
R. G. Stevenson 《Canadian journal of veterinary research》1974,38(3):243-250
Fibrinous pericarditis, fibrinous pleuritis and pneumonia associated with Streptococcus zooepidemicus were observed in two lambs in a small flock of sheep. These lesions were reproduced in lambs inoculated intratracheally with Streptococcus zooepidemicus. Clinical signs included pyrexia, serous to mucopurulent nasal discharge, dyspnea and depression followed by death in six to seven days. Histologically the tissue changes were characterized by an acute inflammatory response involving bronchioles and alveoli, fibrinous pleuritis and fibrinous pericarditis. 相似文献
11.
选用35日龄、体重相近的扬州鹅200只,随机分成4组,每组5个重复,每个重复10只(公、母各半),分别饲喂4个代谢能水平的日粮(A组10.11、B组11.19、C组12.37和D组13.45 MJ/kg),研究其对扬州鹅脂肪代谢及肝脂酶(HL)基因表达的影响。结果表明:与A组相比,D组扬州鹅的屠宰率显著提高(P<0.05),腹脂率极显著提高(P<0.01);随着能量水平的提高,血清极低密度脂蛋白和甘油三酯显著降低,低密度脂蛋白、高密度脂蛋白、脂蛋白脂酶、肝脂酶活性及其表达量均显著增加(P<0.05)。本研究结果表明,日粮能量水平显著影响扬州鹅机体脂肪代谢和HL基因mRNA的表达。 相似文献
12.
日粮中添加丁酸钠对扬州鹅生长性能和消化道发育的影响 总被引：1，自引：0，他引：1
试验旨在研究包膜丁酸钠对0~4周龄扬州鹅生长性能和消化道发育的影响。选用90只1日龄健康、体重一致的扬州鹅公鹅,随机分为3组,每组3个重复,每个重复10只。3种试验日粮分别是在基础日粮中添加0、500、750mg/kg的包膜丁酸钠配制而成。试验期4周,于第29天从每个重复随机取2只,测定肌胃腺胃pH值及不同肠段pH值、长度和重量。结果表明:日粮中添加包膜丁酸钠显著提高了14日龄、28日龄扬州鹅体重(P<0.05);极显著降低了14日龄料重比(P<0.01)。日粮中添加包膜丁酸钠显著增加了28日龄扬州鹅肠道的相对重量(P<0.05),降低了腺胃pH值。日粮中添加包膜丁酸钠促进了小肠的发育和营养物质的吸收,扬州鹅仔鹅日粮中包膜丁酸钠的适宜添加量为500mg/kg。 相似文献
13.
小鹅瘟病原学与检测方法的研究 总被引：4，自引：0，他引：4
从患病雏鹅的病料样本中分离鉴定出一株小鹅瘟野生强毒.采用鹅胚增殖病毒,以琼脂扩散试验从感染鹅胚尿囊液中检出小鹅瘟病毒抗原;以感染鹅胚尿囊液人工接种5日龄健康雏鹅,复制出与自然感染病例相类似的病变; 通过电镜观察到典型的小鹅瘟病毒粒子.该分离毒株核酸分子量为5 000 bp.制备的小鹅瘟沉淀抗原可以检测患病雏鹅血清中的抗体,监测治疗血清的滴度和疫苗接种的效果.标记的小鹅瘟荧光抗体能直接检测患病雏鹅组织中的病毒抗原.针对编码主要结构蛋白VP3的基因设计合成一对引物,扩增出与预期长度相符的特异性DNA片段. 相似文献
14.
猪链球菌2型与麦氏弧菌的分离鉴定及动物致病性试验 总被引：3，自引：0，他引：3
从 1 999年夏江苏省某地暴发的猪急性败血型病死猪脏器中 ,分离到RGR990 1、RGR990 2、RGM990 3、RGM990 4 4株细菌。经病原学鉴定 ,RGR990 1、RGR990 2为猪链球菌 2型 ,RGM990 3、RGM990 4为麦氏弧菌。对其进行致病性研究发现 ,所分离的 2株猪链球菌 2型在实验室条件下对猪仅产生一过性体温升高 ,不致死 ;麦氏弧菌对猪无致病性。将二株猪链球菌 2型及麦氏弧菌混合培养物分别同时接种猪 ,则可使猪体温迅速升高 ,并于 2 3h内死亡 ,二者表现出明显的协同致病作用 相似文献
15.
Somvanshi R Pathania S Nagarajan N Pangty K Kumar P 《Tropical animal health and production》2012,44(4):855-861
A total of 236 urinary bladders (94 cattle and 142 buffaloes) collected from Bareilly, Uttar Pradesh, India, were studied
for spontaneous lesions. These adult animals belonged to Institute’s organized dairy farm and rural areas in the Rohilkhand
region of Uttar Pradesh. Grossly, congestion, hemorrhages, and cystoliths in urinary bladders were diagnosed. Histopathologically,
the major conditions diagnosed were acute cystitis, 44 (18.64%), including, congestion, hemorrhages, sub-acute cystitis; chronic
cystitis, 74 (31.35%), including chronic cystitis un-complicated type, lymphocytic cystitis, plasmolymphocytic cystitis, follicular
cystitis, hyperplasia, nodular/acinar hyperplasia, and cystolithiasis; and nothing unusual diagnosed, 118 (50.00%). Similar
types of pathological conditions were diagnosed in both species of animals with exception of follicular cystitis and nodular/acinar
hyperplasia which was diagnosed respectively only in buffaloes and cystoliths in cows. In addition, a good number of 17/25
(68%) urinary bladder samples tested were found positive for presence of bovine papillomavirus type-2 (BPV-2) by polymerase
chain reaction. These included eight cases of acute cystitis, an equal number of cases of chronic cystitis, and one normal
bladder. BPV-2 is known as potential source of enzootic bovine hematuria along with other co-factors in enzootic areas. Lesions
of zoonotic significance, like tuberculosis, etc., were not diagnosed. None of the observed lesions represented conditions,
which, by themselves, would warrant carcass condemnation in buffaloes. 相似文献
16.
Six cases of fowl cholera in growing turkeys and 3 in adult breeder chickens of the broiler type as well as one case each of a Pasteurella (P.) multocida-associated disease in ducklings and goslings were described in consideration of own laboratory findings and available informations of the case history. Furthermore a report is given on a treatment strategy successfully used in turkeys with highly acute fowl cholera. All the P. multocida strains isolated culturally could be assigned to the subspecies multocida. In one case Bordetella avium, Salmonella (S.) arizonae and S. hadar were additionally cultured form part of turkeys submitted. P. multocida and Moraxella (Pasteurella) anatipestifer could be determined as the causative agents of the disease of ducklings and goslings. P. multocida strains from turkeys were identified serologically as serovars A:3.4 (3x), F:3.4 (2x) and A:3 (1x); those from the breeder chickens as A:3 (3x); and one each from ducklings and goslings as F:3.4 and -:3. (uncapsulated). No death occurred in turkeys with clinical signs of a highly acute fowl cholera if the treatment of the affected birds was started with an intravenous injection of sulfadimethoxine and continued with a combination of sulfachlorpyridazine (SCP) and trimethoprim (TMP) given in the drinking water for 5 days. However relapse occurred 2-3 days after withdrawal of the drug, although the therapy was clinically highly effective. The recurrence of the disease could be prevented reliably if the turkeys were vaccinated with an effective oil-based bacterin and subsequently treated with the SCP-TMP combination given in drinking water over a 12 day period. 相似文献
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18.
为确定导致通辽某鹅场雏鹅败血症的病原,本研究将从病鹅心、肝、淋巴结和脑组织液中分离的革兰氏阳性球菌纯化培养,进行形态学和生长耐受性观察,菌属区别、分群和菌种鉴定试验,16S rDNA检测、系统进化分析和致病性试验。结果表明,分离菌株(HQ831431)为中等致病力粪肠球菌,具有β型溶血特性,可致小鼠急性败血症。分离菌株与参考菌株ATCC29212及国内外分离的其他15株粪肠球菌16S rDNA的同源性均在99.0%以上,位于系统发育树的同一分支。 相似文献
19.
Thirty pigeons were experimentally infected with Streptococcus bovis using an intravenous infection model. Ninety percent of the inoculated pigeons developed clinical disease. Disease signs included acute death, inability to fly, lameness, inappetence, emaciation, polyuria, and the production of slimy, green droppings. At necropsy, the septicemic character of the disease was evident. Typical lesions included extensive well-circumscribed areas of necrosis in the pectoral muscle, tenosynovitis of the tendon of the Musculus pectoralis profundus, and arthritis of the stifle, tibiotarsal, or shoulder joints. Focal myocardial necrosis also was seen. Meningitis and encephalitis occurred in the cerebrum and the cerebellum. Disease signs and lesions described here after experimental infection were similar to those in naturally occurring cases of S. bovis septicemia. 相似文献
20.
Jepson PD Baker JR Kuiken T Simpson VR Kennedy S Bennett PM 《The Veterinary record》2000,146(25):721-728
The pathological changes observed in the lungs of 197 freshly dead to moderately decomposed harbour porpoises (Phocoenaphocoena) stranded in England and Wales between October 1990 and December 1996 were reviewed. In 135 (69 per cent of the cases) macroscopic nematode infections of the bronchial tract with Pseudalius inflexus and Torynurus convolutus, either singly or in combination, were recorded, and 106 (54 per cent) also had P inflexus within the pulmonary blood vessels. All the macroscopically parasitised porpoises were adults or juveniles although two neonates had histological evidence of nematode infection. There were 62 cases of mild to severe, subacute to chronic bronchitis and bronchiolitis, 113 cases of mild to severe chronic granulomatous interstitial pneumonia, and 34 cases of mild to severe vasculitis or thrombovasculitis of pulmonary blood vessels attributable to these nematode infections. In 35 cases necropurulent or purulent (broncho)pneumonias were attributed either to secondary bacterial infections of the lungs or to septicaemias associated in seven cases with Streptococcus canis, in two cases with group B Salmonella species, in one case with Escherichia coli and in one case with Streptococcus lactis. The pulmonary lesions in 67 animals known or diagnosed to have been entrapped in fishing gear were non-specific and included persistent foam in the airways in 45 cases, diffuse congestion in 53, oedema in 50, and multifocal intra-alveolar haemorrhage in 33 cases. Seven cases of acute fibrinous or chronic fibrous pleuritis, seven cases of chronic necropurulent pneumonia associated with mycotic infections, four porpoises with traumatic lesions of the thorax and other parts of the body consistent with fatal attack from bottlenose dolphins (Tursiops truncatus), and one case of diffuse bronchointerstitial pneumonia associated with generalised morbillivirus infection were also recorded. 相似文献