Effect of an immunomodulatory feed additive on markers of immunity in pasture‐fed dairy cows     

MC Playford  K Dawson  SE Playford  AN Smith  SW Page  K Collins  N Forsberg 《Australian veterinary journal》2014,92(12):479-481

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Atlanto-axial approach for cervical myelography in a Thoroughbred horse with complete fusion of the atlanto-occipital bones     

Monica Aleman  Abigail N. Dimock  Erik R. Wisner  Jamie W. Prutton  John E. Madigan 《The Canadian veterinary journal. La revue veterinaire canadienne》2014,55(11):1069-1073

A 2-year-old Thoroughbred gelding with clinical signs localized to the first 6 spinal cord segments (C1 to C6) had complete fusion of the atlanto-occipital bones which precluded performing a routine myelogram. An ultrasound-assisted myelogram at the intervertebral space between the atlas and axis was successfully done and identified a marked extradural compressive myelopathy at the level of the atlas and axis, and axis and third cervical vertebrae.  相似文献   

Changes in Bull Sperm Kinematics after Single Layer Centrifugation     

Y Yulnawati  MC Abraham  D Laskowski  A Johannisson  JM Morrell 《Reproduction in domestic animals》2014,49(6):954-956

The objective of this study was to evaluate bull sperm kinematics after centrifugation through a single layer of a colloid [Single Layer Centrifugation (SLC)]. Ejaculates from 20 bulls were extended and stored at 4–6°C for 24 h during transport to the laboratory for SLC through Androcoll‐B, followed by measurement of sperm kinematics in all samples. Total motility (86% and 88% for uncentrifuged and SLC samples, respectively) and progressive motility (84% for both the groups) were similar (p > 0.05). In contrast, straightness (STR) (0.65 vs 0.69), linearity (LIN) (0.32 vs 0.35) and beat cross frequency (BCF) (22.3 vs 23.6 Hz) were significantly higher in the SLC‐selected samples than in the uncentrifuged samples, whereas velocity of the average path (VAP) (95 vs 90 μm/s), curvilinear velocity (VCL) (192 vs 180 μm/s), amplitude of lateral head deviation (ALH) (7 μm vs 6.5 μm) and hypermotility (49% vs 38%) were significantly decreased. The kinematics of the samples with the poorest motility was improved most by SLC. In conclusion, even though SLC had no direct effect on total and progressive motility, it appeared to have a positive influence on several other kinematic parameters that may be important for fertilization after artificial insemination.  相似文献   

Detection and Characterization of the Cumulene Carbenes H2C5 and H2C6     

MC McCarthy  MJ Travers  A Kovacs  W Chen  SE Novick  CA Gottlieb  P Thaddeus 《Science (New York, N.Y.)》1997,275(5299):518-520

Two cumulene carbenes, H2C5 and H2C6, were detected in a supersonic molecular beam by Fourier transform microwave spectroscopy. Their rotational and leading centrifugal distortion constants were determined with high accuracy, such that the entire radio spectrum can now be calculated. Like the known carbenes H2C3 and H2C4, both molecules have singlet electronic ground states and linear carbon-chain backbones. They can be produced in sufficiently high concentrations in the laboratory that their electronic spectra, expected to lie in the visible, should be readily detectable by laser spectroscopy. The microwave spectra of other, more exotic isomers may be detectable as well.  相似文献   

Laser Rapid Prototyping of Photonic Band-Gap Microstructures   总被引：1，自引：0，他引：1  

MC Wanke  O Lehmann  K Muller  Q Wen  M Stuke 《Science (New York, N.Y.)》1997,275(5304):1284-1286

Three-dimensional periodic microstructures of aluminum oxide, which are important for creating photonic band-gap structures (PBGs), were fabricated by laser rapid prototyping by means of laser-induced direct-write deposition from the gas phase. The structures consisted of layers of parallel rods forming a face-centered tetragonal lattice with lattice constants of 66 and 133 micrometers. These structures showed transmission minima centered around 4 terahertz (75 micrometers) and 2 terahertz (150 micrometers), respectively. PBGs will allow precise control of the optical properties of materials, including lasers without threshold.  相似文献   

Preliminary investigation of somatosensory evoked potentials in equine headshaking     

Pickles KJ  Gibson TJ  Johnson CB  Walsh V  Murrell JC  Madigan JE 《The Veterinary record》2011,168(19):511

The aim of this study was to develop a technique for recording electrical activity of the equine cerebral cortex following application of a noxious electrical stimulus to the maxillary branch of the trigeminal nerve in order to investigate trigeminal nerve neurophysiology in control and headshaking horses. Triphasic somatosensory evoked potentials (SEPs) were recorded using subcutaneous needle electrodes in four control and four headshaking horses under general anaesthesia. Dural electroencephalography electrodes were used to record SEPs in one further control and one further headshaking horse. Headshaking horses appeared to have decreased middle latency and inter-peak intervals following stimulation of the trigeminal nerve compared with control horses, supporting abnormal trigeminal nerve physiology in equine headshaking.  相似文献   

Cerebral oedema and cerebellar herniation in four equine neonates.     

G D Kortz  J E Madigan  J Lakritz  B W Goetzman 《Equine veterinary journal》1992,24(1):63-66

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Equine protozoal myeloencephalitis   总被引：1，自引：0，他引：1  

J E Madigan  R J Higgins 《Veterinary Clinics of North America: Equine Practice》1987,3(2):397-403

Equine protozoal myeloencephalitis (EPM) is a disease that produces neurologic signs of brain or spinal cord dysfunction. The causative organism is believed to be a Sarcocystis species of protozoa. A definitive diagnosis can only be made on histopathology of affected spinal cord or brain. No preventive measures or documented treatment is available at this time for suspected cases of EPM.  相似文献   

RADIOGRAPHIC AND PATHOLOGIC FEATURES OF OSTEOPETROSIS IN TWO PERUVIAN PASO FOALS     

Clifford R.  Berry  DVM  John K.  House  DVM  Paul P.  Poulos  DVM  PhD  John E.  Madigan  DVM  MS  J. Carroll  Woodard  DVM  PhD  Roy R.  Pool  DVM  PhD  Timothy R.  O'Brien  DVM  PhD  Norman  Ackerman  DVM 《Veterinary radiology & ultrasound》1994,35(5):355-361

The radiographic and pathologic findings of two Peruvian Paso foals with osteopetrosis are described. Both foals, one male and one female, presented with respiratory difficulty, brachygnathia and failure to rise after birth. Both foals were mildly anemic, hypogammaglobulinemic and had elevations in serum alkaline phosphatase. Increased medullary bone opacity was noted on radiographs of the extremities, spine and skull in both foals. A lack of normal cortical:medullary bone distinction was evident radiographically. The medullary primary spongiosa appeared to run in parallel columns away from the physes of all long bones and the vertebrae. This created a distinctive hour glass appearance to the osteopetrotic bones. One foal developed a bacterial pneumonia. Both foals were euthanized due to failure to thrive. Histopathology and electron microscopy documented these foals to have normal osteoclastic numbers but lack normal ruffled borders, lack of a clear zone and normal lysosomal numbers indicative of cellular dysfunction. These clinical, radiographic and pathologic findings are similar to the juvenile, lethal autosomal recessive form of osteopetrosis described in humans. Osteopetrosis has not been previously described in a female foal.  相似文献   

Successful treatment of hypereosinophilic syndrome in a dog     

MC PERKINS  ADJ WATSON 《Australian veterinary journal》2001,79(10):686-689

An 11-year-old crossbred dog was presented with a history of episodic vomiting, diarrhoea, abdominal discomfort and coughing. These signs had been present for several years. Marked peripheral eosinophilia (10.3 x 10(9)/L) was found. No underlying cause of reactive eosinophilia was apparent. Bone marrow aspiration biopsy showed hyperplasia of the eosinophilic cell line, with some increase in immaturity, although all cells were morphologically normal. There were numerous eosinophils in bronchial wash fluid and eosinophilic infiltrates were evident in biopsies of pancreas, liver, small intestine and colon but not stomach. Hypereosinophilic syndrome was diagnosed. The dog responded well to twice daily treatment with hydroxyurea and prednisolone. Clinical signs are well-controlled 16 months later.  相似文献