An outbreak of contagious pustular dermatitis associated with Dermatophilus congolensis infection

Extract

Professional opinion was sought by a Taupo district farmer when he noticed what he took to be advanced cases of scabby mouth amongst one group of 3- to 4-month-old Romney lambs. These affected animals, and other groups of clinically normal lambs, had a 1 been “inoculated” with scab-by mouth vaccine by the farmer, at docking time 11 weeks previously. Most grazing on the farm was improved and in good condition after a wet and warm spring. Only the affected group of lambs and their ewes had been grazing on an unusually fibrous pasture.     

A case of congenital hyperostosis in a newborn piglet

One female newborn piglet showed prominent thickening of both forelimbs and died soon after birth. Histopathologically, thin and woven trabeculae of bone was extending out from the edge of cortical bone in the affected forelimbs, and diagnosed as congenital hyperostosis. The extent of radially proliferated trabeculae was most prominent in radioulna. Many round- to spindle-shaped cells were observed in periosteum, which were considered to be osteoblasts. Around the periosteum, the mesenchymal proliferation was extensive with abundant mucus, and cartilaginous metaplastic changes were observed mainly around the radioulna and humerus. Dilatation of vessels with fibrin deposition in vessel walls was often observed, which were considered to reflect the localized circulatory disturbance.     

山羊传染性脓疱病毒的鉴定

上海某养羊场羔羊唇部及哺乳母羊乳房和大腿内侧无毛部发生血红色小丘疹。从形成的痂皮中分离到1株病毒, 经电镜观察和动物接种试验, 证实该病毒为山羊传染性脓疱病毒。     

中西医结合治疗羊传染性脓疱

2004年10月27日,我县王甫乡一养羊户的羊只发生以唇部皮肤呈菜花样增生、出血、溃烂为特征的疫病,畜主称之为"烂嘴病",该病传播快,发病率高,给养羊户造成严重的经济损失.笔者根据流行病学调查、临床症状诊断为羊传染性脓疱,采用中西医结合治疗,收到了较好的疗效.     

Immunohistopathologic demonstration of pleuropneumonia associated with Morganella morganii in a piglet

Serofibrinous pleuropneumonia in a piglet was examined microbiologically and immunohistopathologically. Large numbers of Morganella morganii were isolated from the pneumonic lesion, but no other pathogens were identified. A large amount of M. morganii antigen was demonstrated, and its distribution was closely associated with the histologic lesion. This finding suggests that pleuropneumonia in piglets might be caused by M. morganii.     

仔猪渗出性皮炎的诊治

仔猪渗出性皮炎是由金黄葡萄球菌引发的疾病,该菌能产生大量凝固酶,这种凝固酶能引起皮肤炎症为主征的组织溶解性变化.该病多发于温暖潮湿的季节.7～30日龄哺乳仔猪多发,发病率为5%～13%,死亡率为20%～50%.发病时往往是同窝仔猪相继发病,同时有可能波及全群.该病对哺乳仔猪危害较大,病情严重的仔猪,治愈后通常发育不良.     

一例山羊传染性脓疱的诊疗报告

羊传染性脓疱是由痘病毒科副痘病毒属的羊传染性脓疱病毒引起的一种人畜共患传染病,主要危害羔羊,表现急性接触性传染.     

Interferon induction with polyinosinic:polycytidylic acid in the newborn piglet.

Newborn piglets were treated with various doses of polyinosinic:polycytidylic acid intravenously and their serum interferon responses determined by a plaque reduction assay with vesicular stomatitis virus in Madin-Darby bovine kidney cells. A single dose of 5 mg of polyinosinic:polycytidylic acid was found consistently to induce detectable levels of interferon in serum, while the response to lower doses was inconsistent and higher doses produced clinical signs of toxicity. Piglets receiving 5 mg of polyinosinic:polycytidylic acid had maximum serum interferon titers between four and eight hours after treatment, and interferon was no longer detected at 72 hours after treatment. Following treatment with polyinosinic:polycytidylic acid leukopenia was observed, coincident with peak serum interferon titers. Elevated levels of serum glutamic oxaloacetic transaminase and blood urea, indicative of hepatic and renal dysfunction respectively, were also observed following interferon induction with polyinosinic:polycytidylic acid. Piglets treated with polyinosinic:polycytidylic acid also demonstrated antiviral activity in their intestinal mucosal tissues and intestinal washes, but the antiviral activity in the intestinal wash was not characterizable as interferon. A factor in the intestinal washes from newborn piglets was found to antagonize the antiviral effects of interferon by enhancing the plaque forming ability of vesicular stomatitis virus.     

Factors associated with suckling piglet average daily gain

Low piglet weight at weaning implies a loss of income for the farmer and might influence the welfare of the affected animals negatively. The objective of our cohort study was to identify risk factors in the farrowing section associated with average daily weight gain (ADG) of piglets from birth to weaning. The study was done in 3 Danish farrow-to-finish herds and included 581 sows, 277 pens, 814 farrowings, and 8241 piglets. The data were analysed with a linear mixed model where the response was ADG, and sow and litter were random effects. Piglet treatments for arthritis (-38 g per day), diarrhoea (-8 g per day) and other infections (-21 g per day) were the major infectious contributors to lower ADG. Forelimb-skin abrasions on a piglet (-5 g per day), weak pasterns of sows on concrete slats (-34 g per day), suckling a sow with poor milking 3 weeks after farrowing (-14 g per day), low birth weight (-8.4 g per day per 100 g), male compared to female (-4 g per day) also were associated with lower ADG in the suckling period.     

Characterization of herpesviruses isolated from lactating dairy cows with mammary pustular dermatitis.

Herpesviruses serologically indistinguishable from the DN599 strain of bovine herpesvirus were isolated from 2 separate enzootics of mammary pustular dermatitis in lactating Holstein-Friesian cows.