{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,15]],"date-time":"2026-05-15T05:38:37Z","timestamp":1778823517716,"version":"3.51.4"},"reference-count":55,"publisher":"MDPI AG","issue":"22","license":[{"start":{"date-parts":[[2025,11,13]],"date-time":"2025-11-13T00:00:00Z","timestamp":1762992000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Animals"],"abstract":"<jats:p>Breeding value estimations of Warmblood horses in Poland are based on field performance, but the amount of stallions\u2019 data is still insufficient (334 horses). The first study\u2019s aim is to compare stallions\u2019 results in different stages and evaluate the overall ability using both stages. The effects on preselection (first stage free movement) and performance tests (second stage under rider) were analyzed separately and together as the overall ability. Spearman correlations were evaluated. The second aim was to evaluate the training period on the results. Due to the pandemic and lack of tests, horses had different training periods during the six years studied. The combined year-place effect, horse specialization group, and birth country had effects on four of twelve traits. The regression on age influenced only the preselection jumping trait (p = 0.04), while the training period influenced canter (p = 0.04) and \u201csuccess\u201d (passed\/or not) in the performance test (p = 0.04). It seems that the training period and horse age are more significant for young horses\u2019 performance. The correlations between stages for the same traits are moderate for gaits (&lt;0.53) and low for jumping (&lt;0.3). Thus, at least on a basic phenotypical level, results do not correspond strongly with each other.<\/jats:p>","DOI":"10.3390\/ani15223289","type":"journal-article","created":{"date-parts":[[2025,11,14]],"date-time":"2025-11-14T10:07:03Z","timestamp":1763114823000},"page":"3289","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Comparative Analysis of the Stallion Field Performance Test at Different Training Stages and Horse Age"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7892-7995","authenticated-orcid":false,"given":"Dorota","family":"Lewczuk","sequence":"first","affiliation":[{"name":"Institute of Genetic and Animal Biotechnology PASN Jastrz\u0119biec, Postepu 36A, 05-552 Magdalenka, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2366-4531","authenticated-orcid":false,"given":"Alicja","family":"Borowska","sequence":"additional","affiliation":[{"name":"Faculty of Veterinary Medicine and Animal Science, University of Live Sciences, Pozna\u0144, Wojska Polskiego 28, 60-637 Pozna\u0144, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Julia","family":"Andruszkiewicz","sequence":"additional","affiliation":[{"name":"Faculty of Veterinary Medicine and Animal Science, University of Live Sciences, Pozna\u0144, Wojska Polskiego 28, 60-637 Pozna\u0144, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7193-2006","authenticated-orcid":false,"given":"Emilia","family":"Bagnicka","sequence":"additional","affiliation":[{"name":"Institute of Genetic and Animal Biotechnology PASN Jastrz\u0119biec, Postepu 36A, 05-552 Magdalenka, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,11,13]]},"reference":[{"key":"ref_1","unstructured":"Ducro, B. 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