Risk factors for nuisance barking in dogs

Objective   To determine the key variables related to the environment, animal and owner that influence nuisance barking by dogs in a city with a subtropical climate.
Design and Population   A case–control survey of dog owners in Brisbane, Queensland, was conducted using a questionnaire investigating key variables connected to nuisance barking. Owners of dogs exhibiting nuisance barking were obtained from a list of dogs being treated in a Brisbane behaviour clinic, and those of control dogs were selected from a telephone directory.
Results   Univariate analysis showed that animal, owner and environmental factors all potentially influence the occurrence of nuisance barking. Multivariate analysis identified the following factors, with the relevant odds ratios (OR) as significant: age of the dog (young dog vs old dog, OR 11.2); multiple dogs in the household vs single (OR 5.6); origin of the dog (home bred vs obtained from breeder or friend, OR 4.0); type of dog, (herding vs other types, OR 3.2) and dog with access to the home vs dog without access (OR 2.5).
Conclusion   The greatest risk for nuisance barking occurs with a young dog of the herding type that is home bred and with access to the house in a multiple dog household.     

The origin and foot condition of horses slaughtered in Australia for the human consumption market

Reasons for performing study: There are ethical concerns regarding the loss of horses from various equine industries and their corresponding slaughter. However, to date, no empirical evidence regarding the extent of this loss, nor of the condition of horses involved, exists within Australia. Objectives: To determine the approximate ages, brand type and condition of feet of horses relinquished to an export abattoir in Australia. Method: Data were collected from 340 horses processed at an Australian abattoir from November 2007‐January 2008. Foot abnormalities, injuries and hoof indicators of overgrown and untrimmed hooves were assessed together with a dental inspection. Observations of brand were used to determine horse origin. Results: The dental age of 60% of horses was ≤7 years, and 53% originated from the racing industry (40% Thoroughbred and 13% Standardbred). A total of 81% of the horses had overgrown or untrimmed hooves. Standardbred horses had fewer grass cracks and more injuries to the coronary band than Thoroughbreds, probably due to pacing and trotting activities. Conclusions: Just over half of the horses slaughtered at an Australian abattoir on 3 working days were aged ≤7 years and emanated from the racing industry. Foot problems were common. Potential relevance: Future research should identify means of reducing the number of horses slaughtered and preventative measures for foot disorders.     

Change in tibial plateau angle after tibial plateau leveling osteotomy in dogs

OBJECTIVE: To determine the change in tibial plateau angle (TPA) during healing after tibial plateau leveling osteotomy (TPLO) performed for cranial cruciate ligament insufficiency in dogs and to examine factors that may be associated with the change. STUDY DESIGN: Retrospective study. STUDY POPULATION: One hundred and forty-nine canine stifles after TPLO procedure. METHODS: Records of dogs that had TPLO were reviewed. Patient age, weight, sex, breed, pre- and postoperative TPA, recheck TPA, time to recheck, type of implant used, and radiographic evidence of healing were analyzed. RESULTS: Mean time to recheck evaluation was 46 days (range, 28-65 days). Mean difference between immediate postoperative and recheck TPA measurements was 1.5 degrees (range, -3 to 9 degrees). Recheck TPA was a significantly greater (numerically higher) than immediate postoperative TPA (P<.0001). There was no significant effect of patient weight, type of plate used, or healing status of the osteotomy at the time of recheck. No correlation between pre- or postoperative TPA angles and change in TPA angle was detected. CONCLUSIONS: TPA changes during osteotomy healing after TPLO, but factors influencing this change were not identified. CLINICAL RELEVANCE: TPA may increase during healing after TPLO despite apparently adequate osteotomy fixation. The clinical relevance of this increase is unknown but is likely minimal.     

Environmental risk from the development of PFA fill earthwork structures and an improved code of practice to mitigate potential impacts

Leaching tests have demonstrated that metals and other inorganic contaminants are released from pulverised fuel ash (PFA) under laboratory conditions. Consequently, it is necessary to review the potential risks posed by large earthwork structures constructed of PFA. In this study, the findings of the recently completed risk assessment for unbound PFA in the Waste Protocols Project are compared to the results of equivalent risk assessments carried out using leachate data for PFA samples collected from the Barlow PFA storage mound at Drax Power Station. Current recommendations for an environmental code of practice for the construction of earthworks using PFA are considered in relation to the results of the generic risk assessments. A tiered methodology for the impact assessment, investigation and risk assessment to be adopted for the placement of PFA fill in large construction projects or within above ground storage mounds is presented. This methodology is intended to provide a framework for earthwork design engineers to use in order to ensure that a thorough assessment is made of the possible effects of PFA bulk fill earthworks or above ground storage mounds on the environment. Copyright © 2010 John Wiley & Sons, Ltd.