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Addressing The Challenges Of Conducting Observational Studies In Sheep Abattoirs, Elyssa Payne, Melissa Starling, Paul Mcgreevy
Addressing The Challenges Of Conducting Observational Studies In Sheep Abattoirs, Elyssa Payne, Melissa Starling, Paul Mcgreevy
Paul McGreevy, PhD
The competing needs of maintaining productivity within abattoirs, and maintaining high standards of animal welfare, provide fertile grounds for applied research in animal behavior. However, there are challenges involved in capturing useful behavioral data from the supply chain (from paddock to processing plant). The challenges identified in this report are based on a review of the scientific literature as well as field study observations. This article describes those challenges as they relate to collecting behavioral data on livestock-herding dogs, humans and livestock as they interact in abattoirs, and provides insights and recommendations for others embarking on animal studies in confined …
Valuable Behavioural Phenotypes In Australian Farm Dogs, P. D. Mcgreevy, C. M. Wade, E. R. Arnott, J. B. Early
Valuable Behavioural Phenotypes In Australian Farm Dogs, P. D. Mcgreevy, C. M. Wade, E. R. Arnott, J. B. Early
Paul McGreevy, PhD
This report presents findings regarding the ways to optimise the performance of livestock working dogs in Australia. The methods available to optimise dog performance include both environmental and genetic factors. The objectives of this study were to identify objective measures of desirable behavioural phenotypes in Australian livestock working dogs and explore genetic parameters of these 'quality of working life' traits within the Kelpie breed. The document reports on genotyping that reveals gene-behaviour associations and describes heritability estimates that underpin a database for potential estimated breeding value (EBV) calculations.
Whip Use By Jockeys In A Sample Of Australian Thoroughbred Races—An Observational Study, Paul D. Mcgreevy, Robert A. Corken, Hannah Salvin, Celeste M. Black
Whip Use By Jockeys In A Sample Of Australian Thoroughbred Races—An Observational Study, Paul D. Mcgreevy, Robert A. Corken, Hannah Salvin, Celeste M. Black
Paul McGreevy, PhD
The use of whips by jockeys is an issue. The current study viewed opportunistic high-speed footage of 15 race finishes frame-by-frame to examine the outcomes of arm and wrist actions (n = 350) on 40 horses viewed from the left of the field. Any actions fully or partially obscured by infrastructure or other horses were removed from the database, leaving a total of 104 non-contact sweeps and 134 strikes. For all instances of arm actions that resulted in fully visible whip strikes behind the saddle (n = 109), the outcomes noted were area struck, percentage of unpadded section making contact, …
Environmental Factors Associated With Success Rates Of Australian Stock Herding Dogs, Elizabeth R. Arnott, Jonathan B. Early, Claire M. Wade, Paul D. Mcgreevy
Environmental Factors Associated With Success Rates Of Australian Stock Herding Dogs, Elizabeth R. Arnott, Jonathan B. Early, Claire M. Wade, Paul D. Mcgreevy
Paul McGreevy, PhD
This study investigated the current management practices associated with stock herding dogs on Australian farms. A parallel goal was to determine whether these practices and the characteristics of the dog handlers were associated with success rates. Success rate refers to the proportion of dogs acquired by the farmer that were retained as working dogs. Data on a total of 4,027 dogs were obtained through The Farm Dog Survey which gathered information from 812 herding dog owners around Australia. Using logistic regression, significant associations were identified between success rate and seven variables: dog breed, housing method, trial participation, age of the …
Strong Selection For Behavioural Resilience In Australian Stock Working Dogs Identified By Selective Sweep Analysis, Elizabeth R. Arnott, Lincoln Peek, Jonathan B. Early, Annie Y. H. Pan, Bianca Haase, Tracy Chew, Paul D. Mcgreevy, Claire M. Wade
Strong Selection For Behavioural Resilience In Australian Stock Working Dogs Identified By Selective Sweep Analysis, Elizabeth R. Arnott, Lincoln Peek, Jonathan B. Early, Annie Y. H. Pan, Bianca Haase, Tracy Chew, Paul D. Mcgreevy, Claire M. Wade
Paul McGreevy, PhD
Background: Working dog handlers and breeders have strong opinions on characteristics that are desirable in the breeds that they use to handle stock. Most of these characteristics are related to conformation or behaviour. This study explored whether the genetics underlying desirable working behaviour traits might be identified by selective sweep analysis; a method that identifies long regions of strong homozygosity combined with allelic divergence from a comparison group. For this analysis, we compared genomic haplotype architecture in two breeds derived from common founder stock but subjected to divergent selective pressures. The breeds studied were the Australian Kelpie, which is registered …
Human Induced Rotation And Reorganization Of The Brain Of Domestic Dogs, Taryn Roberts, Paul Mcgreevy, Michael Valenzuela
Human Induced Rotation And Reorganization Of The Brain Of Domestic Dogs, Taryn Roberts, Paul Mcgreevy, Michael Valenzuela
Paul McGreevy, PhD
Domestic dogs exhibit an extraordinary degree of morphological diversity. Such breed-to-breed variability applies equally to the canine skull, however little is known about whether this translates to systematic differences in cerebral organization. By looking at the paramedian sagittal magnetic resonance image slice of canine brains across a range of animals with different skull shapes (N = 13), we found that the relative reduction in skull length compared to width (measured by Cephalic Index) was significantly correlated to a progressive ventral pitching of the primary longitudinal brain axis (r = 0.83), as well as with a ventral shift in the position …
The Effect Of Noseband Tightening On Horses’ Behavior, Eye Temperature, And Cardiac Responses, Kate Fenner, Samuel Yoon, Peter White, Melissa Starling, Paul Mcgreevy
The Effect Of Noseband Tightening On Horses’ Behavior, Eye Temperature, And Cardiac Responses, Kate Fenner, Samuel Yoon, Peter White, Melissa Starling, Paul Mcgreevy
Paul McGreevy, PhD
Restrictive nosebands are common in equestrian sport. This is concerning, as recent evidence suggests that very tight nosebands can cause a physiological stress response, and may compromise welfare. The objective of the current study was to investigate relationships that noseband tightness has with oral behavior and with physiological changes that indicate a stress response, such as increases in eye temperature (measured with infrared thermography) and heart rate and decreases in heart rate variability (HRV). Horses (n = 12) wearing a double bridle and crank noseband, as is common in dressage at elite levels, were randomly assigned to four treatments: unfastened …
Dog Behavior Co-Varies With Height, Bodyweight And Skull Shape, Paul D. Mcgreevy, Dana Georgevsky, Johanna Carrasco, Michael Valenzuela, Deborah L. Duffy, James A. Serpell
Dog Behavior Co-Varies With Height, Bodyweight And Skull Shape, Paul D. Mcgreevy, Dana Georgevsky, Johanna Carrasco, Michael Valenzuela, Deborah L. Duffy, James A. Serpell
Paul McGreevy, PhD
Dogs offer unique opportunities to study correlations between morphology and behavior because skull shapes and body shape are so diverse among breeds. Several studies have shown relationships between canine cephalic index (CI: the ratio of skull width to skull length) and neural architecture. Data on the CI of adult, show-quality dogs (six males and six females) were sourced in Australia along with existing data on the breeds’ height, bodyweight and related to data on 36 behavioral traits of companion dogs (n = 8,301) of various common breeds (n = 49) collected internationally using the Canine Behavioral Assessment and Research Questionnaire …