Serogroups of Australian isolates of Serpulina hyodysenteriae     

DJ HAMPSON  CD MALTAS  CP STEPHENS  K. McKECHNIE  NB BULLER 《Australian veterinary journal》1994,71(10):347-347

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Clinical pathology of Australian bluetongue virus serotype 16 infection in Merino sheep     

M. FLANAGAN  SJ JOHNSON  D. HOFFMANN  IG POLKINGHORNE  DJ REID  MA SHEPHERD 《Australian veterinary journal》1993,70(3):101-104

SUMMARY Viraemic blood from an ox naturally infected with Australian bluetongue (BLU) virus serotype 16 was passaged twice in sheep. Twelve 2- to 4-years-old Merino ewes, negative in a bluetongue agar gel Immunodiffusion test, were Inoculated with viraemic blood from the second sheep passage. They were examined for 18 days and compared with a control group. Significant changes in haematological measurements, namely packed cell volume, total white cell count and lymphocyte count, and in plasma enzyme concentrations, namely aspartate transaminase and creatine kinase, occurred in the infected sheep. All Infected sheep became sick. The antibody response, and clinical and necropsy findings were consistent with other reports of mild to moderate disease with Australian BLU serotypes.  相似文献   

Congenital pericardial diaphragmitic hernia and multiple cardiac defects in a litter of collies     

G E Eyster  A T Evans  G L Blanchard  D J Krahwinkel  A Chaffee  D DeYoung  D R Karr  P O'Handley 《Journal of the American Veterinary Medical Association》1977,170(5):516-520

Four Collie littermates had multiple cardiac and diaphragmatic anomalies. Ventricular septal defect was found in 3, pulmonic stenosis in 2, atrial septal defect in 1, mitral regurgitaion in 1, and pericardial diaphragmatic hernia in 3. Five additional littermates died within 72 hours of birth but were not necropsied. On the basis of available evidence, it was believed that the defects were congenital but not hereditary.  相似文献   

Advancements in Large Animal Embryo Transfer and Related Biotechnologies   总被引：1，自引：0，他引：1  

J Scherzer  RA Fayrer-Hosken  L Ray  DJ Hurley  GL Heusner 《Reproduction in domestic animals》2008,43(3):371-376

Embryo transfer has been an inherent part of cattle breeding for more than 35 years and has also gained remarkable interest from the equine industry after several breeds allowed registration of more than one foal per year. In both large animal species, non‐surgical embryo recovery and transfer are well‐established techniques. However, success rates after superovulation and cryopreservation of embryos in horses are still lagging behind those of cattle, and more research is needed to address these areas. To address the problem of freezing large equine embryos, we offer a preliminary demonstration of a new cryopreservation method which involves reduction of the blastocoelic volume and microinjection of cryopreservative. Successful cryopreservation will improve the ability of practitioners to preserve and implant embryos in recipient mares. Recent advances in the use of equine FSH to induce superovulation in mares brings to the forefront the issue of how to best preserve the large number of embryos that are produced. Finally, the use of sexed semen after superovulation will provide the bovine and equine breeding industry the offspring of the desired sex.  相似文献   

Clinical haematology and biochemistry profiles of cattle naturally infected with Theileria orientalis Ikeda type in New Zealand     

KE Lawrence  SF Forsyth  BL Vaatstra  AMJ McFadden  DJ Pulford  K Govindaraju 《New Zealand veterinary journal》2018,66(1):21-29

AIMS: To present the haematology and biochemistry profiles for cattle in New Zealand naturally infected with Theileria orientalis Ikeda type and investigate if the results differed between adult dairy cattle and calves aged <6 months.

METHODS: Haematology and biochemistry results were obtained from blood samples from cattle which tested positive for T. orientalis Ikeda type by PCR, that were submitted to veterinary laboratories in New Zealand between October 2012 and November 2014. Data sets for haematology and biochemistry results were prepared for adult dairy cattle (n=62 and 28, respectively) and calves aged <6 months (n=62 and 28, respectively), which were matched on the basis of individual haematocrit (HCT). Results were compared between age groups when categorised by HCT. Selected variables were plotted against individual HCT, and locally weighted scatterplot smoothing (Loess) curves were fitted to the data for adult dairy cattle and calves <6 months old.

RESULTS: When categorised by HCT, the proportion of samples with HCT <0.15 L/L (severe anaemia) was greater for adult dairy cattle than for beef or dairy calves, for both haematology (p<0.002) and biochemistry (p<0.001) submissions. There were differences (p<0.05) between adult dairy cattle and calves aged <6 months in the relationships between HCT and red blood cell counts, mean corpuscular volume, mean corpuscular haemoglobin, mean corpuscular haemoglobin concentrations, lymphocyte and eosinophil counts, and activities of glutamate dehydrogenase and aspartate aminotransferase. In both age groups anisocytosis was frequently recorded. The proportion of blood smears showing mild and moderate macrocytosis was greater in adults than calves (p=0.01), and mild and moderate poikilocytosis was greater in calves than adults (p=0.005).

CONCLUSIONS AND CLINICAL RELEVANCE: The haematology and biochemistry changes observed in cattle infected with T. orientalis Ikeda type were consistent with extravascular haemolytic anaemia. Adult dairy cattle were more likely to be severely anaemic than calves. There were differences in haematology and biochemistry profiles between adult dairy cattle and calves, but most of these differences likely had a physiological rather than pathological basis. Overall, the haematological changes in calves aged <6 months appeared less severe than in adult dairy cattle.  相似文献   

Granuloma formation and suspected neuropathic pain in a domestic pigeon (Columba livia) secondary to an oil‐based,inactivated Newcastle disease vaccine administered for protection against pigeon paramyxovirus‐1     

ML Cowan  DJ Monks  SR Raidal 《Australian veterinary journal》2014,92(5):171-176

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Use of REP‐PCR and 16S rRNA gene sequencing for comparison of Mannheimia haemolytica isolates obtained from fatal cases of bovine respiratory disease in the USA and Australia     

JD Taylor  DJ Doyle  PJ Blackall  AW Confer 《Australian veterinary journal》2014,92(1-2):15-23

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Diffusing-Wave Spectroscopy of Dynamics in a Three-Dimensional Granular Flow   总被引：1，自引：0，他引：1  

N Menon  DJ Durian 《Science (New York, N.Y.)》1997,275(5308):1920-1922

Diffusing-wave spectroscopy was used to measure the microscopic dynamics of grains in the interior of a three-dimensional flow of sand. The correlation functions show that minutely separated grains fly from collision to collision with large random velocities. On a time scale 10(3) to 10(4) times longer than the average time between collisions, the grains displayed slow, collective rearrangements, which, at the long-time limit, produced diffusive dynamics.  相似文献