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| Author | Momozawa, Y.; Takeuchi, Y.; Tozaki, T.; Kikusui, T.; Hasegawa, T.; Raudsepp, T.; Chowdhary, B.P.; Kusunose, R.; Mori, Y. | ||||
| Title | SNP detection and radiation hybrid mapping in horses of nine candidate genes for temperament | Type | Journal Article | ||
| Year | 2007 | Publication | Animal Genetics | Abbreviated Journal | Anim Genet |
| Volume | 38 | Issue  |
1 | Pages | 81-83 |
| Keywords | Animals; *Behavior, Animal; Breeding; Horses/*genetics/physiology; *Polymorphism, Single Nucleotide; Radiation Hybrid Mapping; *Temperament | ||||
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| Address | Laboratory of Veterinary Ethology, The University of Tokyo, Tokyo 113-8657, Japan | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0268-9146 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:17257195 | Approved | no | ||
| Call Number | Serial | 1834 | |||
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| Author | Stock, K.F.; Distl, O. | ||||
| Title | Prediction of breeding values for osseous fragments in fetlock and hock joints, deforming arthropathy in hock joints, and pathologic changes in the navicular bones of Hanoverian Warmblood horses | Type | Journal Article | ||
| Year | 2005 | Publication | Livestock Production Science | Abbreviated Journal | |
| Volume | 92 | Issue |
1 | Pages | 77-94 |
| Keywords | Hanoverian Warmblood horse; Radiological status; Breeding values; Response to selection | ||||
| Abstract | The results of a standardised radiological examination of 5928 Hanoverian Warmblood horses selected for sale at auction were used to predict relative breeding values (RBV) in the 23,662 horses included in the last four generations of the probands' pedigrees. The distribution of the RBV was investigated in the whole four-generation pedigree, in the probands and in those stallions that contributed at least three offspring to the probands. The RBV of the probands' sires were further compared with the officially published performance-based relative breeding values, i.e., total indices dressage (TID) and jumping (TIJ). The sires' level of dressage indices was considerably higher (mean TID=110) than of the jumping indices (mean TIJ=98). Total indices radiographic findings (TIR) were calculated for the sires with varying weighting given to the individual RBV. In each case, this resulted in a mean TIR of 99. Finally, total indices were derived from TIR and TID and/or TIJ in order to develop different selection schemes for all-purpose breeding and for breeding focused on dressage and show jumping. All breeding values under consideration increased by between 1% and 19% when radiographic findings were weighted with between 30% and 60% complementary to the corresponding performance parameters, and when only sires were selected with above average total indices. At the same time, the prevalences of the radiographic findings investigated here were lowered by up to 10% each. When only one radiographic finding was considered at a time, the maximum attainable response to selection was a 16-23% increase in the relative breeding values and a relative decrease in prevalences of radiographic findings of between 31% and 52%. The results of this study indicate that it is possible in horse breeding to consider simultaneously health and performance traits. Medical data should be included in the prediction of breeding values in order to improve the radiological status of today's riding horses. | ||||
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| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 3953 | ||
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| Author | Dubois, C.; Manfredi, E.; Ricard, A. | ||||
| Title | Optimization of breeding schemes for sport horses | Type | Journal Article | ||
| Year | 2008 | Publication | Livestock Science | Abbreviated Journal | |
| Volume | 118 | Issue |
1-2 | Pages | 99-112 |
| Keywords | Breeding scheme; Horse; Jumping; Optimization; Genetic trend, Multistage selection | ||||
| Abstract | A selection scheme for jumping sport horses is modelled with four stages of selection for males and one stage for females. The selection objective included three traits: conformation and gaits (CG, weighted 20%), competition jumping (CJ, weighted 60%) and a third trait (TT, weighted 20%) such as sperm quality or orthopaedic status. The first selection stage is based on knowledge of the pedigree with the aim of selecting horses suitable for CG test (at 3Â years old) and CJ test (at 5Â years old). The second stage includes the horse's own performance with respect to CG and CJ with the aim of selecting horses suitable for the TT test. The third stage is the selection of a limited number of males who are allowed to reproduce. The fourth stage (at 12Â years old) takes into account the results of the horse's progeny. Females are selected in one step, whatever the number of performances measured at 5Â years old. The annual genetic response was 9.4% genetic standard deviation of the objective, 2.6% for CG, 9.0% for CJ and 1.5% for TT. Results showed that selection by progeny testing did not contribute much to genetic response (12% of progeny issued from proven sires), the female pathway represented 26% of genetic response, TT was difficult to improve when the genetic correlation was unfavourable (-Â 0.6% genetic standard deviation for -Â 0.20 genetic correlation), and should consequently be directed towards the use of molecular markers. When compared with a selection scheme involving a station test, genetic response was the same if the breeding values used for selection before entering the station test took into account the results of the relatives for CJ and CG. This revealed the importance of an extensive performance test (like for competition performance) when designing breeding schemes for sport horses. | ||||
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| ISSN | 1871-1413 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 4759 | ||
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| Author | Koenen, E.P.C.; Aldridge, L.I.; Philipsson, J. | ||||
| Title | An overview of breeding objectives for warmblood sport horses | Type | Journal Article | ||
| Year | 2004 | Publication | Livestock Production Science | Abbreviated Journal | |
| Volume | 88 | Issue |
1-2 | Pages | 77-84 |
| Keywords | Breeding objective; Sport horse; Sport performance; Conformation; Specialisation | ||||
| Abstract | The aim of this paper is to review the current breeding objectives of organisations that run a selection programme for warmblood riding horses in the light of an increasing trend in trade of semen across countries. In a questionnaire, 19 horse breeding organisations provided information on breeding objective traits. Variation both in length and amount of details used to define individual breeding objectives was large, reflecting that many traits in sport horse breeding are not easy to measure, and therefore, have to be defined in a subjective way. The majority of the breeding objectives included conformation, gaits and performance in show jumping and dressage. Some breeding objectives also included behaviour, soundness, health and fertility. However, several organisations did not specify the sport discipline and the level of competition (amateur, national or international level) in the breeding objective. In general, relative weightings of the traits within the verbally presented breeding objectives were not given, but were assessed by the organisations in response to this study. The relevance of more information on expected future production circumstances and on the genetic parameters of the traits of interest are discussed. A further review of the consistency, completeness and the number of traits of the present breeding objectives for sport horses is recommended to optimise the efficiency of selection decisions. | ||||
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| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 3954 | ||
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| Author | Benhajali, H.; Richard-Yris, M.-A.; Ezzaouia, M.; Charfi, F.; Hausberger, M. | ||||
| Title | Reproductive status and stereotypies in breeding mares: A brief report | Type | Journal Article | ||
| Year | 2010 | Publication | Applied Animal Behaviour Science | Abbreviated Journal | Appl. Anim. Behav. Sci. |
| Volume | 128 | Issue |
1-4 | Pages | 64-68 |
| Keywords | Stereotypies; Breeding mare; Sire; Reproductive-status | ||||
| Abstract | The aim of this study was to investigate the relationship between age, reproductive status and sire of the mare and the tendency to perform stereotypies. One hundred and fourteen purebred Arab mares, offspring of 39 sires ( offspring per sire) and aged 4-21 years () were observed from the 30th March to the 15th of May 2005 using instantaneous scan sampling. We used a multivariate logistic regression in order to study the relationship between age, reproductive status and sire of the mare and the tendency to perform stereotypies. 28% of the observed mares showed stereotypic behaviour, mostly weaving (22%). Neither age (χ2 Wald = 9.36, p = 0.89) nor sire (χ2 Wald = 4.34, p = 1.0) affected the occurrence of stereotypies whilst the reproductive status of the mare influenced significantly the occurrence (χ2 Wald = 10.75, p = 0.001) but also the type (χ2 = 12.1, p < 0.001) of stereotypic behaviour. Weaving was more frequent in non foaling mares (41.4%) than in foaling mares (1.8%) that performed mostly stall-walking. | ||||
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| ISSN | 0168-1591 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5279 | ||
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| Author | Pell, S.M.; McGreevy, P.D. | ||||
| Title | Prevalence of stereotypic and other problem behaviours in thoroughbred horses | Type | Journal Article | ||
| Year | 1999 | Publication | Australian Veterinary Journal | Abbreviated Journal | Aust Vet J |
| Volume | 77 | Issue |
10 | Pages | 678-679 |
| Keywords | Animals; *Behavior, Animal; Breeding; Horse Diseases/*epidemiology; Horses/*psychology; New South Wales/epidemiology; Odds Ratio; Prevalence; *Stereotyped Behavior | ||||
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| Address | Department of Animal Science, University of Sydney, New South Wales | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0005-0423 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:10590799 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 1927 | ||
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| Author | Valone; Thomas J.; Templeton, Jennifer J. | ||||
| Title | Public information for the assessment of quality: a widespread social phenomenon | Type | Journal Article | ||
| Year | 2002 | Publication | Philosophical Transactions of the Royal Society B: Biological Sciences | Abbreviated Journal | Phil. Trans. Biol. Sci. |
| Volume | 357 | Issue |
1427 | Pages | 1549-1557 |
| Keywords | Breeding Patch Assessment Eavesdropping Fighting Mate Choice Copying Sociality Vicarious Sampling | ||||
| Abstract | We propose that the use of public information about the quality of environmental resources, obtained by monitoring the sampling behaviour of others, may be a widespread social phenomenon allowing individuals to make faster, more accurate assessments of their environment. To demonstrate this (i) we define public information and distinguish it from other kinds of social information; (ii) we review empirical work demonstrating the benefits and costs of using public information to estimate food patch quality; (iii) we examine recent work showing that individuals may also be using public information to improve their estimates of the quality of such disparate environmental parameters as breeding patches, opponents and mates; and finally (iv) we suggest avenues of future work to better understand the nature of public information use and when it might be used or ignored. Such work should lead to a more complete understanding of the behaviour of individuals in social aggregations. | ||||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 4273 | ||
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| Author | Drent, P.J.; van Oers, K.; van Noordwijk, A.J. | ||||
| Title | Realized heritability of personalities in the great tit (Parus major) | Type | Journal Article | ||
| Year | 2003 | Publication | Proceedings. Biological sciences / The Royal Society | Abbreviated Journal | Proc Biol Sci |
| Volume | 270 | Issue |
1510 | Pages | 45-51 |
| Keywords | Aggression; Animals; Animals, Domestic; Animals, Wild; *Behavior, Animal; Breeding; Exploratory Behavior; Female; *Heredity; Male; Selection (Genetics); Songbirds/*genetics/*physiology; Variation (Genetics) | ||||
| Abstract | Behaviour under conditions of mild stress shows consistent patterns in all vertebrates: exploratory behaviour, boldness, aggressiveness covary in the same way. The existence of highly consistent individual variation in these behavioural strategies, also referred to as personalities or coping styles, allows us to measure the behaviour under standardized conditions on birds bred in captivity, link the standardized measurements to the behaviour under natural conditions and measure natural selection in the field. We have bred the great tit (Parus major), a classical model species for the study of behaviour under natural conditions, in captivity. Here, we report a realized heritability of 54 +/- 5% for early exploratory behaviour, based on four generations of bi-directional artificial selection. In addition to this, we measured hand-reared juveniles and their wild-caught parents in the laboratory. The heritability found in the mid-offspring-mid-parent regression was significantly different from zero. We have thus established the presence of considerable amounts of genetic variation for personality types in a wild bird. | ||||
| Address | Netherlands Institute of Ecology, PO Box 40, 6666 ZG Heteren, The Netherlands. drent@cto.nioo.knaw.nl | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0962-8452 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:12590770 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 591 | ||
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| Author | Nocera, J.J.; Forbes, G.J.; Giraldeau, L.-A. | ||||
| Title | Inadvertent social information in breeding site selection of natal dispersing birds | Type | Journal Article | ||
| Year | 2006 | Publication | Proceedings. Biological Sciences / The Royal Society | Abbreviated Journal | Proc Biol Sci |
| Volume | 273 | Issue |
1584 | Pages | 349-355 |
| Keywords | Animals; *Behavior, Animal; *Breeding; *Environment; Female; Logistic Models; Male; Songbirds/growth & development/*physiology | ||||
| Abstract | Several species use the number of young produced as public information (PI) to assess breeding site quality. PI is inaccessible for synchronously breeding birds because nests are empty by the time the young can collect this information. We investigate if location cues are the next best source of inadvertent social information (ISI) used by young prospectors during breeding site choice. We experimentally deployed ISI as decoys and song playbacks of breeding males in suitable and sub-optimal habitats during pre- and post-breeding periods, and monitored territory establishment during the subsequent breeding season for a social, bobolink (Dolichonyx oryzivorus), and a more solitary species, Nelson's sharp-tailed sparrow (Ammodramus nelsoni). The sparrows did not respond to treatments, but bobolinks responded strongly to post-breeding location cues, irrespective of habitat quality. The following year, 17/20 sub-optimal plots to which bobolink males were recruited were defended for at least two weeks, indicating that song heard the previous year could exert a “carry-over attraction” effect on conspecifics the following year. Sixteen recruited males were natal dispersers, as expected when animals have little opportunity to directly sample their natal habitat quality. We suggest that differences in breeding synchronicity may induce an equivalent clinal distribution of ISI use. | ||||
| Address | Department of Biology, University of New Brunswick, Bag Service #45111, Fredericton, NB E3B 6E1, Canada. j.nocera@unb.ca | ||||
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| ISSN | 0962-8452 | ISBN | Medium | ||
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| Notes | PMID:16543178 | Approved | no | ||
| Call Number | Serial | 2129 | |||
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| Author | Hamilton, W.D. | ||||
| Title | Geometry for the selfish herd | Type | Journal Article | ||
| Year | 1971 | Publication | Journal of theoretical biology | Abbreviated Journal | J. Theor. Biol. |
| Volume | 31 | Issue |
2 | Pages | 295-311 |
| Keywords | Animals; Anura; *Behavior, Animal; Breeding; Communication; Evolution; Fear; Metallurgy; *Models, Biological; Probability; Snakes; *Spatial Behavior | ||||
| Abstract | This paper presents an antithesis to the view that gregarious behaviour is evolved through benefits to the population or species. Following Galton (1871) and Williams (1964) gregarious behaviour is considered as a form of cover-seeking in which each animal tries to reduce its chance of being caught by a predator. It is easy to see how pruning of marginal individuals can maintain centripetal instincts in already gregarious species; some evidence that marginal pruning actually occurs is summarized. Besides this, simply defined models are used to show that even in non-gregarious species selection is likely to favour individuals who stay close to others. Although not universal or unipotent, cover-seeking is a widespread and important element in animal aggregation, as the literature shows. Neglect of the idea has probably followed from a general disbelief that evolution can be dysgenic for a species. Nevertheless, selection theory provides no support for such disbelief in the case of species with outbreeding or unsubdivided populations. The model for two dimensions involves a complex problem in geometrical probability which has relevance also in metallurgy and communication science. Some empirical data on this, gathered from random number plots, is presented as of possible heuristic value. |
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| ISSN | 0022-5193 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:5104951 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 771 | ||
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