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| Author | Kampmann, S.; Hampson, B.A.; Pollitt, C.C. | ||||
| Title | Population dynamics of feral horses (Equus caballus) following above-average rainfall in a semi-arid environment of Australia | Type | Journal Article | ||
| Year | 2013 | Publication | Australian Veterinary Journal | Abbreviated Journal | Aust Vet J |
| Volume | 91 | Issue | 11 | Pages | 482-487 |
| Keywords | animal welfare; ecology; horses; reproduction; wildlife | ||||
| Abstract | Background Recent record rainfall in much of semi-arid Central Australia is the most likely reason for a feral horse population increase in excess of normal. Uncontrolled numbers of feral horses have habitat degradation and animal welfare implications. Objectives The aims of this study were to investigate the social structure of feral horses and assess their population growth rate following unseasonably high rainfall. Methods The study area was 4000 km2 of unmanaged, semi-arid country in Central Australia (latitude 24.50°S, longitude 132.10°E). Horses were identified by descriptive features from ground searches, movement-activated cameras and ‘hides’ positioned at key water holes. Wherever possible, sex and age categories were documented. Population growth rate was estimated by the number of foals divided by the number of horses older than 1 year in the observed population. Results A total of 1424 horses were identified and categorised, of which 335 were foals born within the current year. Only 123 juveniles were identified. Of the adult horses, 53.4% were male and 46.6% were female and this differed from parity (P = 0.04). Of the mares, 71.9% had a foal at foot and the population growth rate was 29.5%. Conclusions With a sustained population growth rate of 29.5%, this population of feral horses will more than double within 3 years. The high population increase will likely have a detrimental effect on native fauna and flora and the fragile, semi-arid ecosystems of Central Australia. After a period of high rainfall and plentiful resources, ‘normal’ drought conditions will return and many feral horses will starve and die as they compete for limited resources. | ||||
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ISSN  |
1751-0813 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5747 | ||
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| Author | Hodgson, D.; Howe, S.; Jeffcott, L.; Reid, S.; Mellor, D.; Higgins, A. | ||||
| Title | Effect of prolonged use of altrenogest on behaviour in mares | Type | |||
| Year | 2005 | Publication | Veterinary journal (London, England : 1997) | Abbreviated Journal | Vet J |
| Volume | 169 | Issue | 1 | Pages | 113-115 |
| Keywords | Administration, Oral; Anabolic Agents/adverse effects/*pharmacology; Animals; Behavior, Animal/*drug effects; Body Constitution/drug effects; Body Weight/drug effects; *Doping in Sports; Female; Horses/*physiology; Social Behavior; Social Dominance; Time Factors; Trenbolone/adverse effects/*analogs & derivatives/*pharmacology | ||||
| Abstract | Erratum in: Vet J. 2005 May;169(3):321. Corrected and republished in: Vet J. 2005 May;169(3):322-5. Oral administration of altrenogest for oestrus suppression in competition horses is believed to be widespread in some equestrian disciplines, and can be administered continuously for several months during a competition season. To examine whether altrenogest has any anabolic or other potential performance enhancing properties that may give a horse an unfair advantage, we examined the effect of oral altrenogest (0.044 mg/kg), given daily for a period of eight weeks, on social hierarchy, activity budget, body-mass and body condition score of 12 sedentary mares. We concluded that prolonged oral administration of altrenogest at recommended dose rates to sedentary mares resulted in no effect on dominance hierarchies, body mass or condition score. |
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| Address | Faculty of Veterinary Science, University of Sydney, Private Mailbag 4, Narellan Delivery Centre, Narellan, NSW 2567, Australia. davidh@camden.usyd.edu.au | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN |
1090-0233 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:15683772 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 671 | ||
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| Author | Douglas Wilson, A. | ||||
| Title | The effects of diet on blood glucose, insulin, gastrin and the serum tryptophan: Large neutral amino acid ratio in foals | Type | Journal Article | ||
| Year | 2006 | Publication | The Veterinary Journal | Abbreviated Journal | Vet J |
| Volume | Issue | Pages | |||
| Keywords | Diet; Horse; Insulin; Gastrin; Tryptophan | ||||
| Abstract | High carbohydrate diets can affect the health and behaviour of foals, but the mechanisms are not always fully understood. The objective of this study was to compare the effects of feeding a starch and sugar (SS), or a fat (oil) and fibre (FF) rich diet to two groups of eight foals. Diets were fed from 4 to 42 weeks of age, alongside ad libitum forage. Faecal pH levels did not differ significantly between groups and endoscopic examination showed that the gastric mucosa was healthy in both groups at 25 and 42 weeks of age. At 40 weeks of age, SS foals had significantly higher total blood glucose and lower total blood gastrin than FF foals during the 6h period following ingestion of their respective diets, but insulin levels did not differ significantly. The ratio between serum tryptophan and other large neutral amino acids showed a trend towards an interaction between diet and sampling time. The results provide preliminary information about the effects of diet on the physiology of young horses. | ||||
| Address | School of Veterinary Science, University of Bristol, Langford House, Bristol BS40 5DU, UK | ||||
| Corporate Author | Amanda J. Badnell-Watersb, Rachel Biceb, Ailison Kellandb, Pat A. Harrisc and Christine J. Nicol | Thesis | |||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN |
1090-0233 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:16945560 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 63 | ||
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| Author | Bannasch, D.; Rinaldo, C.; Millon, L.; Latson, K.; Spangler, T.; Hubberty, S.; Galuppo, L.; Lowenstine, L. | ||||
| Title | SRY negative 64,XX intersex phenotype in an American saddlebred horse | Type | Journal Article | ||
| Year | 2007 | Publication | Veterinary Journal (London, England : 1997) | Abbreviated Journal | Vet J |
| Volume | 173 | Issue | 2 | Pages | 437-439 |
| Keywords | Animals; Female; Genitalia/abnormalities; Hermaphroditism/*veterinary; Horse Diseases/*diagnosis/genetics; Horses/*genetics/*physiology; Karyotyping; Phenotype; Sex Differentiation; Sex Differentiation Disorders/diagnosis/veterinary; Sex-Determining Region Y Protein/genetics/*metabolism | ||||
| Abstract | A female American saddlebred horse was presented for surgical correction of a possible pseudohermaphrodite condition. The horse had abnormal external genitalia and exhibited stallion-like behaviour. No evidence of uterine or ovarian tissue was identified on laparoscopic examination, but hypoplastic testicular-like tissue was removed, although this was found to contain no spermatogonia upon histopathological examination. A karyotype was performed and showed the normal chromosomal complement for a female horse (64,XX). Polymerase chain reaction to detect the SRY gene was negative in peripheral blood as well as the testicular-like tissue. This case represents the first report of an SRY negative XX-male sex reversal intersex phenotype, which is a potentially inherited condition, in an American saddlebred horse. | ||||
| Address | Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, CA 95616, USA. dlbannasch@ucdavis.edu | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN |
1090-0233 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:16386440 | Approved | no | ||
| Call Number | Serial | 1882 | |||
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| Author | McGreevy, P.D. | ||||
| Title | The advent of equitation science | Type | Journal Article | ||
| Year | 2006 | Publication | The Veterinary Journal | Abbreviated Journal | Vet J |
| Volume | 174 | Issue | 3 | Pages | 492-500 |
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| Abstract | The lengthy association of humans with horses has established traditional equestrian techniques that have served military and transport needs well. Although effective, these techniques have by-passed the research findings of modern psychologists, who developed the fundamentals of learning theory. That said, the pools of equestrian debate are far from stagnant. The latest wave of horse whisperers has offered some refinements and some novel interpretations of the motivation of horses undergoing training. Additionally, the Federation Equestre Internationale (FEI) has introduced the concept of the 'happy equine athlete' and, in the light of the hyperflexion (Rollkur) debate, recently examined the possible effects of some novel dressage modalities on equine 'happiness'. However, many still question the welfare of the ridden horse since it is largely trained using negative reinforcement, has to respond to pressure-based signals and is seldom asked to work for positive rewards. Science holds tremendous promise for removing emotiveness from the horse-riding welfare debate by establishing how much rein tension is too much; how much contact is neutral; how contact can be measured; how discomfort can be measured; how pain can be measured; and how learned helplessness manifests in horses. These are some of the topics addressed by equitation science, an emerging discipline that combines learning theory, physics and ethology to examine the salience and efficacy of horse-training techniques. | ||||
| Address | Faculty of Veterinary Science, Gunn Building (B19), University of Sydney, NSW 2006, Australia | ||||
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| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN |
1090-0233 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:17157542 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 3709 | ||
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| Author | Stock, K.F.; Hamann, H.; Distl, O. | ||||
| Title | Factors associated with the prevalence of osseous fragments in the limb joints of Hanoverian Warmblood horses | Type | Journal Article | ||
| Year | 2006 | Publication | Veterinary Journal (London, England : 1997) | Abbreviated Journal | Vet J |
| Volume | 171 | Issue | 1 | Pages | 147-156 |
| Keywords | Animals; Body Weight/physiology; Female; Horse Diseases/*epidemiology/genetics/*radiography; Horses; Joint Diseases/epidemiology/genetics/radiography/*veterinary; Male; Pedigree; Prevalence | ||||
| Abstract | Factors associated with the prevalence of osseous fragments (OF) in fetlock and hock joints were investigated in a population of young Hanoverian Warmblood horses selected for sale at auction from 1991 to 1998. The study was based on results of a standardized radiological examination of 3127 horses. The prevalences of OF in the two joints were significantly dependent on the date, type and quality of the auction, the region of origin and on the anticipated suitability of the horses for dressage and/or show-jumping. The probability of finding OF increased with wither-height. Furthermore, there was a significant association of the individual sire with the prevalence of OF in both fetlock and hock joints, and of the maternal grandsire with the prevalence of OF in the hock joints. Consequently, both non-genetic and genetic parameters should be taken into account in order to reduce the prevalence of OF in young Warmblood riding horses. | ||||
| Address | Institute of Animal Breeding and Genetics, School of Veterinary Medicine Hannover, 30559 Hannover, Germany. kathrin-friederike.stock@tiho-hannover.de | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN |
1090-0233 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:16427591 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 3712 | ||
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| Author | Singer, E.R.; Barnes, J.; Saxby, F.; Murray, J.K. | ||||
| Title | Injuries in the event horse: Training versus competition | Type | Journal Article | ||
| Year | 2007 | Publication | Abbreviated Journal | Vet J | |
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| Abstract | Two related studies on injuries sustained by event horses during competition and during training are reported. During the cross-country phase of competition, the most common injuries were lacerations and abrasions to the carpus and stifle. Superficial digital flexor tendonitis and exertional rhabdomyolysis were significantly more common during Cours Complete Internationale (CCI) competitions compared to one-day event (ODE) competitions. The difference in injury types at ODEs and CCI competitions probably relates to the increased athletic demands of the CCI and the closer veterinary observation at these competitions. The results of the training study indicate that 21% of horses intending to compete in a CCI did not start due to injury. Forty-three percent of these injuries involved soft tissue structures with injuries to the superficial digital flexor tendon and the suspensory ligament each accounting for 33%. The most important area for future research is investigation of the risk factors for these career-threatening soft tissue injuries. | ||||
| Address | Division of Equine Studies, University of Liverpool, Leahurst, Neston, South Wirral, CH64 7TE, UK | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN |
1090-0233 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:17204438 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 4025 | ||
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| Author | Verheyen, K.L.; Price, J.S.; Wood, J.L. | ||||
| Title | Fracture rate in Thoroughbred racehorses is affected by dam age and parity | Type | Journal Article | ||
| Year | 2006 | Publication | Abbreviated Journal | Vet J | |
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| Abstract | This study's aim was to determine the effects of dam age and parity on the rate of fracture in offspring in Thoroughbred racehorses in training for flat racing. It was hypothesised that first foals and those from older mares would have a higher fracture rate than subsequent foals and those from younger mares. A two-year observational cohort study collected data from eight trainers on 335 horses that were monitored since the start of their training as yearlings. Multivariable Poisson regression analyses showed that first foals had a significantly lower fracture rate than subsequent ones (RR=0.33; 95% CI=0.12, 0.89; P=0.02) and rate of fracture decreased with increasing dam age (RR=0.91 per year increase in dam age; 95% CI=0.83, 0.99; P=0.03). This study shows for the first time that the rate of equine injury may be influenced by factors that affect skeletal development. Further research on intra-uterine and peri-natal determinants of injury risk in later life in horses is needed. | ||||
| Address | Department of Veterinary Clinical Sciences, Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire AL9 7TA, UK | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN |
1090-0233 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:16996756 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 4027 | ||
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| Author | Golland, L.C.; Evans, D.L.; McGowan, C.M.; Hodgson, D.R.; Rose, R.J. | ||||
| Title | The effects of overtraining on blood volumes in standardbred racehorses | Type | Journal Article | ||
| Year | 2003 | Publication | Veterinary Journal (London, England : 1997) | Abbreviated Journal | Vet J |
| Volume | 165 | Issue | 3 | Pages | 228-233 |
| Keywords | Animals; *Blood Volume; Erythrocytes/*physiology; Hematocrit/veterinary; Horse Diseases/etiology/*physiopathology; Horses; Male; *Physical Conditioning, Animal; Physical Endurance | ||||
| Abstract | Red blood cell hypervolaemia has been used for diagnosis of overtraining in racehorses, and has been suggested as a mechanism of this cause of loss of racing performance. The effects of overload training (OLT) on the plasma, blood and red cell volumes were investigated in a prospective study in 12 Standardbred horses. Measurements of blood volumes were made after eight and 32 weeks of an exercise training study. Horses were randomly allocated to OLT and control groups (n=6) after 16 weeks of training. Training duration and intensity were increased more rapidly for the OLT group from week 16, until overtraining was diagnosed in week 32.There were no significant effects of OLT on plasma, blood or total red cell volumes between weeks eight and 32. These volumes significantly decreased with time. Maximal haematocrit after exercise was lower (P<0.05) in the OT group in week 32 (0.57+/-0.003% L/L) than in week eight (0.59+/-0.004 L/L). It was concluded that red cell hypervolaemia was not a mechanism for the decrease in capacity for exercise that occurs with overtraining. | ||||
| Address | Faculty of Veterinary Science, University of Sydney, Sydney, NSW 2006, Australia | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN |
1090-0233 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:12672368 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 4045 | ||
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| Author | Keeling, L.J.; Jonare, L.; Lanneborn, L. | ||||
| Title | Investigating horse–human interactions: The effect of a nervous human | Type | Journal Article | ||
| Year | 2009 | Publication | The Veterinary Journal | Abbreviated Journal | Vet J |
| Volume | 181 | Issue | 1 | Pages | 70-71 |
| Keywords | Behaviour; Reactivity; Heart rate; Accidents; Equitation | ||||
| Abstract | The heart rates (HR) of horses and the people leading them (10 horses, 20 people), and riding them (17 horses, 17 people), were recorded in an indoor arena. The horses were Swedish leisure horses of mixed ages, sex and breed. All except two of the people were female and all were of mixed age and riding experience. Each horse–human pair walked or rode between points A and B (30 m) four times on each test occasion. However, just before the fourth pass, participants were told that an umbrella would be opened as they rode, or led, the horse past the assistant. The umbrella was not opened, so this pass was no different to the previous control occasions, but nevertheless there was an increase in HR for both the person (leading, P = 0.06; riding, P < 0.05) and the horse (being led, P < 0.05; being ridden, P < 0.05). The findings indicate that analysis of HR recorded simultaneously from people and horses under different experimental handling or riding conditions presents a useful tool to investigate horse–human interactions. | ||||
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| Series Volume | Series Issue | Edition | |||
| ISSN |
1090-0233 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5908 | ||
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