Giardia infection in budgerigars     

LJ FILIPPICH  PA McDONNELL  E. MUNOZ  JA UPCROFT 《Australian veterinary journal》1998,76(4):246-249

Budgerigars ( Melopsittacus undulatus ) from two different breeding colonies were found to have Giardia infection. Light microscopy, scanning electron microscopy and in-vitro and in-vivo studies confirmed the species was G psittaci . Chicks were clinically affected and showed signs of retarded growth, dehydration and diarrhoea. The faeces of adult birds treated with metronidazole in drinking water were negative for Giardia 5 days after treatment. Megabacteria were also found in adult birds but were not treated. This study extends the known host range for Giardia in Australia to include budgerigars.  相似文献   

注射用头孢呋辛钠的安全性试验研究   总被引：1，自引：0，他引：1  

陈立江 《中国兽药杂志》2008,42(4):23-25

通过试验研究对注射用头孢呋辛钠的安全性进行评价。采用豚鼠和家兔分别进行本品的全身用药过敏性、血管和肌肉局部刺激性及家兔红细胞体外溶血性试验研究。结果显示本品对豚鼠无明显全身过敏性、静脉注射对家兔耳缘静脉无明显局部刺激性、对家兔肌肉注射给药无明显局部刺激性、对家兔红细胞无明显体外溶血性。表明本品的各项安全性均良好,为实际应用提供了有力依据。  相似文献   

Development and validation of a 3ABC antibody ELISA in Australia for foot and mouth disease     

A Colling  C Morrissy  J Barr  G Meehan  L Wright  W Goff  LJ Gleeson  B van der Heide  S Riddell  M Yu  D Eagles  R Lunt  S Khounsy  Ngo Than Long  Pham Phong Vu  Nguyen Than Phuong  Nguyen Tung  W Linchongsubongkoch  J Hammond  M Johnson  WO Johnson  H Unger  P Daniels  JR Crowther 《Australian veterinary journal》2014,92(6):192-199

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Pairing and phase separation in a polarized Fermi gas     

Partridge GB  Li W  Kamar RI  Liao YA  Hulet RG 《Science (New York, N.Y.)》2006,311(5760):503-505

We report the observation of pairing in a gas of atomic fermions with unequal numbers of two components. Beyond a critical polarization, the gas separates into a phase that is consistent with a superfluid paired core surrounded by a shell of normal unpaired fermions. The critical polarization diminishes with decreasing attractive interaction. For near-zero polarization, we measured the parameter beta = -0.54 +/- 0.05, describing the universal energy of a strongly interacting paired Fermi gas, and found good agreement with recent theory. These results are relevant to predictions of exotic new phases of quark matter and of strongly magnetized superconductors.  相似文献   

Dermatoses caused by infestations of immature Ixodes spp. on dogs and cats in Sydney, Australia   总被引：1，自引：1，他引：0  

CG Baxter  LJ Vogelnest  SL Doggett 《Australian veterinary journal》2009,87(5):182-187

Infestations of larval and nymphal Ixodes spp. were identified in 16 dogs and 16 cats from several small animal clinics in Sydney. Cases occurred in late summer or autumn, peaking in February, and were seasonally recurrent in some individuals. Clinical signs of infestation included a papular dermatitis and irritation or pruritus that ranged from severe to mild or absent. The distribution of tick attachment tended to be cranial and ventral, with the face, legs, axillae and ventrum the most commonly affected sites. The estimated number of ticks in each infestation varied from less than 10 to more than 100. Basic morphological examination of ticks collected from affected animals was performed by attending veterinarians using light microscopy, and larvae and nymphs belonging to the Ixodes genus were identified. Ticks collected from 17 animals and submitted to the Department of Medical Entomology, Westmead Hospital were putatively identified as I. trichosuri (57%) and I. holocyclus (25%) larvae. Histopathological samples of attachment sites collected from three dogs and one cat were characterised by ticks attached in well-demarcated invaginations of the skin ('tick craters') associated with variable epidermal and/or dermal necrosis, focal eosinophilic intraspinous pustules, mild to marked eosinophilic and neutrophilic, superficial to deep, dermal perivascular to interstitial inflammation, and moderate to marked superficial dermal oedema and red cell extravasation. A range of topical acaricidal preparations, including fipronil and synthetic pyrethroids, were used for treatment.  相似文献   

在猪日粮中充分利用植物蛋白质     

宋国麟  Gary Partridge  Milan Hruby 《国外畜牧学(猪与禽)》2003,23(3):17-19

欧盟委员会 2 0 0 0年底关于在饲料中禁用某些动物蛋白质制品的决定 ,从技术上和经济上对进行猪、禽饲料配合的商业营养师提出了相当严峻的挑战。有些欧洲国家还已经自主决定将鱼粉包括在禁用之列 ,或者因靠近反刍畜饲料生产场地而担心其储存问题故将其剔除出生产多畜种饲料的饲料厂。与此同时 ,许多饲料生产商还往往不用动物脂肪而改用植物油脂以图在越来越严格的监督下增强行业的自信。这些措施的结果是增强了在日粮中对各种植物蛋白质的依赖 ,而究竟选用哪些原料就取决于相对成本和其供应量充足与否。这些原料的纤维含量较高 ,其中蛋白质…  相似文献   

甜菜中的甜菜碱可提高日粮能量的能量供应     

陆湘文  Gary Partridge 《国外畜牧学(猪与禽)》2002,(3):26-26

德国今年的试验证实 ,在生长肥育猪日粮中添加提取自甜菜的一种天然物质对于猪肉生产十分有利。猪的饲料加工商可由此而降低饲料成本 ,饲养者可因猪生产性能的改善和猪胴体的优价而获利 ,猪肉加工商可因胴体的优质 (比如猪肉滴水损失的减少 )减少损失。甜菜中的这种提取物常被称为“甜菜碱” ,也称为“三甲基甘氨酸” ,这种提取物近 1 0年来已经在人类营养中起着重要作用 ,据称将其添加于膳食之中可以预防心血管系统疾病。如今 ,甜菜碱正在迅速为家禽饲料业所接受 ,其已经证实的对鸡的有利作用包括抵抗炎热和疾病带来的应激 ,从而使鸡的生长…  相似文献   

饲料酶制剂对防治动物结肠炎的作用     

韩彦明  潘启欢  Gary Partridge 《中国饲料》2000,(12)

在饲料中使用酶制剂能有效地改善动物的生产水平(如日增重和饲料利用率),提高动物生产的经济效益.酶制剂对猪生产水平的提高,可能归因于营养和防病治病的交互作用.近期有关资料证实,饲料中酶对维持动物健康有重要作用,如在日粮中使用木聚糖酶是防止和治疗动物结肠炎的一个有效方法.  相似文献   

Requirement of heterochromatin for cohesion at centromeres   总被引：1，自引：0，他引：1  

Bernard P  Maure JF  Partridge JF  Genier S  Javerzat JP  Allshire RC 《Science (New York, N.Y.)》2001,294(5551):2539-2542

Centromeres are heterochromatic in many organisms, but the mitotic function of this silent chromatin remains unknown. During cell division, newly replicated sister chromatids must cohere until anaphase when Scc1/Rad21-mediated cohesion is destroyed. In metazoans, chromosome arm cohesins dissociate during prophase, leaving centromeres as the only linkage before anaphase. It is not known what distinguishes centromere cohesion from arm cohesion. Fission yeast Swi6 (a Heterochromatin protein 1 counterpart) is a component of silent heterochromatin. Here we show that this heterochromatin is specifically required for cohesion between sister centromeres. Swi6 is required for association of Rad21-cohesin with centromeres but not along chromosome arms and, thus, acts to distinguish centromere from arm cohesion. Therefore, one function of centromeric heterochromatin is to attract cohesin, thereby ensuring sister centromere cohesion and proper chromosome segregation.  相似文献   

A delayed wave of death from reproduction in Drosophila     

Sgrò CM  Partridge L 《Science (New York, N.Y.)》1999,286(5449):2521-2524

Mortality rates typically increase rapidly at the onset of aging but can decelerate at later ages. Reproduction increases the death rate in many organisms. To test the idea that a delayed impact of earlier reproduction contributes to both an increase in death rates and a later deceleration in mortality, the timing of the surplus mortality produced by an increased level of egg production was measured in female Drosophila. Reproduction produced a delayed wave of mortality, coincident with the sharp increase in death rates at the onset of aging and the subsequent deceleration of mortality. These results suggest that aging has evolved primarily because of the damaging effects of reproduction earlier in life, rather than because of mutations that have detrimental effects only at late ages.  相似文献