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      Barriers to entering race training before 4 years of age for Thoroughbred horses born in the 2014 Australian foal crop

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          Abstract

          Currently, there is a paucity of data on the barriers for Australian Thoroughbred horses transitioning from stud farm to racetrack. This paper reports the reasons why horses failed to enter race training and documents their exit destinations. Biographical records of Australian Thoroughbred horses born in 2014 were investigated to determine the number of horses that had not officially entered race training by the start of the 4-year old racing season (1 August 2018). Of the 13,677 foals born in 2014, 66% had commenced training and 51% had raced before the beginning of their 4-year-old season in Australia. A sampling frame based on the post code of the premises where foals were born and records from Racing Australia were used to select a geographically representative sample of the 2014 Australian Thoroughbred foal crop ( n = 4,124). From the population eligible for sampling 1,275 horses that had not entered training were enrolled in the survey and their breeders were sent an online questionnaire with follow-up phone calls for those who had not responded. Of the 633 responses (50% of 1275) the most frequent outcomes for horses were: death (38%, n = 239), participation in the racing industry in their 4-year old racing season (24%, n = 154) and retirement (16%, n = 100) either as Australian Stud Book (ASB) bloodstock ( n = 17), or as horses rehomed outside the Thoroughbred industry ( n = 83). Illness or injury was the most frequent reason for horses not entering race training that were ASB bloodstock, rehomed or deceased. There was a loss of traceability at the point of sale with most horses sold at 1 year of age. This study provides important information on the reasons, alternative outcomes and gaps in traceability for horses not entering training prior to the 4-year-old racing season.

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          An assessment of wastage in thoroughbred racing from conception to 4 years of age.

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            Causes of and farm management factors associated with disease and death in foals.

            A prospective study was conducted to describe the causes of and farm management factors associated with disease and death in a population of foals in Texas. Data from 2,468 foals at 167 farms were provided by veterinarians for all 12 months during 1991. Among 2,468 foals, 116 deaths were reported (4.7%). Pneumonia was the most commonly reported cause of death, followed by septicemia. When considered as a group, musculoskeletal disorders (traumatic, infectious, or deforming problems) represented the most common cause of all reported deaths. Daily risk of death was greatest during the first 7 days of life, and decreased with age. Risk and frequency of causes of death varied by age. Crude incident morbidity during the year was 27.4% (677/2,468). Respiratory disease was the most common cause of incident disease in the study population, followed by diarrhea. Risk of disease was greatest among < or = 7 days old, and decreased with age. Crude rate of incident of diarrhea was significantly lower among farms where foals were born on pasture, compared with that at farms where foals were born in stalls. The practice of assessing passive immunity was significantly associated with decreased morbidity from septicemia and pneumonia.
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              The association of age at first start with career length in the Australian Thoroughbred racehorse population

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                Author and article information

                Contributors
                Role: ConceptualizationRole: Data curationRole: Formal analysisRole: Funding acquisitionRole: InvestigationRole: MethodologyRole: Project administrationRole: ResourcesRole: SoftwareRole: ValidationRole: VisualizationRole: Writing – original draftRole: Writing – review & editing
                Role: Data curationRole: Formal analysisRole: InvestigationRole: Writing – original draftRole: Writing – review & editing
                Role: ConceptualizationRole: Funding acquisitionRole: InvestigationRole: MethodologyRole: SupervisionRole: Writing – review & editing
                Role: ConceptualizationRole: InvestigationRole: Project administrationRole: SupervisionRole: Writing – review & editing
                Role: Editor
                Journal
                PLoS One
                PLoS ONE
                plos
                plosone
                PLoS ONE
                Public Library of Science (San Francisco, CA USA )
                1932-6203
                5 August 2020
                2020
                : 15
                : 8
                : e0237003
                Affiliations
                [1 ] Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria, Australia
                [2 ] Equine Centre, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Werribee, Victoria, Australia
                Massey University, NEW ZEALAND
                Author notes

                Competing Interests: The authors have read the journal’s policy and have the following competing interests to declare: Racing Victoria Ltd. provided support for MLF in the form of a thesis stipend. However, the stipend is part of a research contract for a separate project (Racing Vic 045083 15/16) and not associated with this study. Racing Victoria Ltd. also provided support to ASMW to work on an unrelated project with a separate research group in the Melbourne Veterinary School. This does not alter our adherence to PLOS ONE policies on sharing data and materials. There are no patents, products in development or marketed products associated with this research to declare.

                Author information
                http://orcid.org/0000-0002-5120-8632
                Article
                PONE-D-20-03805
                10.1371/journal.pone.0237003
                7406052
                32756576
                014f1cb4-a5e4-40e8-99aa-2c60f0cbd2bf
                © 2020 Flash et al

                This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                History
                : 9 February 2020
                : 17 July 2020
                Page count
                Figures: 2, Tables: 6, Pages: 15
                Funding
                Funded by: funder-id http://dx.doi.org/10.13039/501100009207, Agrifutures Australia;
                Award ID: PRJ- 011251
                Award Recipient :
                This study was supported by AgriFutures Australia, as part of the AgriFutures™ Thoroughbred Horses Program ( https://www.agrifutures.com.au), in the form of a grant awarded to MLF, JRG and MAS (PRJ-011251). The funders had no role in study design, data collection and analysis or preparation of the manuscript.
                Categories
                Research Article
                Biology and Life Sciences
                Organisms
                Eukaryota
                Animals
                Vertebrates
                Amniotes
                Mammals
                Equines
                Horses
                Biology and Life Sciences
                Zoology
                Animals
                Vertebrates
                Amniotes
                Mammals
                Equines
                Horses
                Biology and Life Sciences
                Agriculture
                Crop Science
                Crops
                Research and Analysis Methods
                Research Design
                Survey Research
                Surveys
                Biology and Life Sciences
                Agriculture
                Animal Management
                Animal Husbandry
                People and Places
                Geographical Locations
                Oceania
                Australia
                Biology and Life Sciences
                Agriculture
                Farms
                Medicine and Health Sciences
                Medical Conditions
                Congenital Disorders
                Congenital Anomalies
                Medicine and Health Sciences
                Critical Care and Emergency Medicine
                Trauma Medicine
                Traumatic Injury
                Custom metadata
                All relevant data are within the manuscript and its Supporting Information files.

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                Uncategorized

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