Prevalence and risk factors for medical events following exercise at Australian Greyhound race meetings          下载免费PDF全文

SL Karamatic  GA Anderson  BW Parry  RF Slocombe  CS Mansfield 《Australian veterinary journal》2018,96(4):120-126

Aim

A prospective, observational study to determine the prevalence of post‐exercise conditions at Australian Greyhound race meetings and to assess association with race performance and other environmental, race‐ and dog‐related factors was undertaken.

Methods

A total of 4020 starters were observed (2813 Greyhounds, 1009 trainers, 536 races, 52 race meets, 48 race dates and 11 race tracks) following a race. The presence of diaphragmatic flutter (DF), ataxia, seizure, collapse or sudden death was recorded. Risk factors were screened by univariable logistic regression prior to multivariable backward stepwise model building.

Results

In this study, 962 starters (n = 768 dogs) had DF (23.9%), 16 starters were ataxic (0.4%) and there were no observed cases of collapse, seizure or sudden death. Race track location, increasing race distance, race grade based on increasing 1st place prize value, lower (earlier) race number at the meeting, age, a previous observation of DF at the last start, females, colour (white) and better finishing position were all associated with an increased risk of a Greyhound being observed with DF. However, when logistic regression assessing the random effect of dog was performed, the presence of previous DF was not significant. In this cohort, DF was common following strenuous exercise in Greyhounds and on its own does not appear to result in reduced performance or distress to the animal.

Conclusion

The incidence of ataxia was low and collapse, seizure and sudden death were not observed. However, even though uncommon, ataxia has welfare concerns for racing Greyhounds that warrants further investigation.  相似文献   

A model for risk‐based assessment of Phelipanche mutelii (branched broomrape) eradication in fields     

J PRIDER  R CORRELL  P WARREN 《Weed Research》2012,52(6):526-534

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Development of Procedures for Sex-sorting Frozen–Thawed Bovine Spermatozoa     

SL Underwood  R Bathgate  WMC Maxwell  G Evans 《Reproduction in domestic animals》2009,44(3):460-466

Dairy bull sperm may be sex‐sorted, frozen and used to artificially inseminate heifers with acceptable fertility if the herd is well‐managed. One drawback to the technology is that donor bulls must be located within a short distance of the sorting facility in order to collect semen, which limits the number of bulls from which sorted sperm are available. A successful method used to overcome this limitation in sheep is sex‐sorting from frozen–thawed semen and refreezing for artificial insemination. This technique is attractive to the dairy industry, and therefore a series of three experiments was designed to investigate the optimal methods to prepare, sex‐sort and re‐freeze frozen–thawed bovine sperm. Sperm were prepared for sorting by density gradient separation in either PureSperm^® or BoviPure?, followed by staining in one of three diluents (Androhep^®, Bovine Sheath Fluid + 0.3% BSA or TALP buffer). Sperm were sorted and collected into Test yolk buffer, and frozen in an extender containing 0, 0.25, 0.375 or 0.5% Equex STM Paste. Frozen–thawed sperm were better orientated (p = 0.006) and had fewer damaged membranes (8.7 ± 0.6% vs 19.5 ± 2.4%; p = 0.003) after centrifugation in PureSperm^® rather than BoviPure? gradients. Sperm orientation (p < 0.05) and motility (69.9 ± 3.0 vs 55.6 ± 4.0; p < 0.001) were highest after staining in Androhep^® rather than in TALP buffer. Sperm were more motile (58.2 ± 4.7 vs 38.7 ± 3.5; p < 0.001) and had better acrosome integrity (74.3 ± 2.9 vs 66.8 ± 2.0; p < 0.001) after freezing in an extender containing 0.375% Equex STM Paste than in extender without Equex. Hence, a protocol has been developed to allow frozen–thawed bull sperm to be sex‐sorted with high resolution between the sexes, then re‐frozen and thawed with retention of motility and acrosome integrity.  相似文献   

Repair of a type IV Monteggia fracture in a foal   总被引：1，自引：1，他引：0  

SL Jalim  AO McKinnon  TM Russell 《Australian veterinary journal》2009,87(11):463-466

A Monteggia fracture is a humero-radial luxation combined with a fracture of the ulna. It is a rare injury, infrequently reported in the horse. This case report describes the surgical repair of such a fracture in a 4-month-old filly.  相似文献   

A morphometric analysis of the changes with age in the skin surface wax and the sebaceous gland area of Merino sheep     

G. H. WARREN  P. J. JAMES†  A. M. NEVILLE 《Australian veterinary journal》1983,60(8):238-240

SUMMARY Skin samples were collected from the midside of Merino ewes at 6 weeks, one year, and 3 years of age. The thickness of the surface wax and the number and area of sebaceous glands per unit length of skin were measured with an image analyser. Three-year-old sheep had a significantly (P < .05) thicker skin surface wax layer, (14.4μ± 1.45), than they did as lambs, (7.85μ± 0.88). Both the number (2.91 ± 0.15 per mm) and area (24.27 μ²/μ± 1.54) of sebaceous glands per unit length of skin of 3-year-old sheep were significantly less than in lambs, which measured 4.10 ± 0.15 per mm and 39.30 ± 4.14 μ²/μ respectively and one-year-old sheep, which measured 3.99 ± 0.21 per mm and 35.43 μ²/μ 3.65 respectively.  相似文献   

Growth and regression in chickens of a duck variant of the Rous sarcoma     

WALLER EF  WARREN GH  FAGAN R 《American journal of veterinary research》1958,19(70):204

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Fibrinous pericarditis and pericardial effusion in three neonatal foals     

SK Armstrong  SL Raidal  KJ Hughes 《Australian veterinary journal》2014,92(10):392-399

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INDEPTH Wide-Angle Reflection Observation of P-Wave-to-S-Wave Conversion from Crustal Bright Spots in Tibet     

Y Makovsky  SL Klemperer  L Ratschbacher  LD Brown  M Li  W Zhao  F Meng 《Science (New York, N.Y.)》1996,274(5293):1690-1691

Three-component wide-angle seismic data acquired in southern Tibet during Project INDEPTH show strong P-to-S converted reflections from reflectors that are aligned at a depth of approximately 15 kilometers beneath the northern Yadong-Gulu rift. These converted reflections are locally higher in amplitude than the corresponding P-wave reflections. Modeling of reflection mode conversion as a function of incidence angle indicates that this condition obtains for a reflector that is a solid over fluid interface; it is not typical of a solid-solid interface. The likely candidates for a fluid trapped within the crystalline crust of southern Tibet are granitic magma and water (brine).  相似文献   

Survival time and relapse in dogs with meningoencephalomyelitis of unknown origin treated with prednisolone and ciclosporin: a retrospective study     

SL Brady  AP Woodward  MAR le Chevoir 《Australian veterinary journal》2020,98(10):491-498

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Pharmacokinetics of carprofen and firocoxib for medication control in racing greyhounds     

TH Morris  SW Paine  PW Zahra  EC Li  SA Colgan  SL Karamatic 《Australian veterinary journal》2020,98(12):578-585

Animals used in sport should be treated as required to ensure animal welfare but any such use of medication should also be controlled to ensure integrity. Pharmacokinetic studies on groups of six greyhounds were performed to measure plasma and urine levels of carprofen and firocoxib to inform medication control advice. Using the standard methodology for medication control the Irrelevant Plasma Concentration was determined as 20 and 2 ng/mL for carprofen and firocoxib, respectively. The Irrelevant Urine Concentration was also determined as 0.3 and 2 ng/mL for carprofen and firocoxib, respectively. These Irrelevant Plasma and Urine Concentrations will allow laboratory Screening Limits, Detection Times and Withdrawal Time advice to be determined and publicised by regulators of greyhound racing. The Screening Limits will also inform Recommended Limits of Detection if meat-containing residues of these medications are fed to greyhounds.  相似文献