Krisztina Nagy
Szent István University
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Krisztina Nagy.
Acta Veterinaria Hungarica | 2010
Péter Tóth; Csaba Horváth; Viktória Ferencz; Krisztina Nagy; Noémi Gligor; O. Szenci; Gábor Bodó
In the first part of this methodological study eleven metacarpi of 9 skeletally normal horses were examined from 4 directions by dual energy x-ray absorptiometry (DXA). The differences between the dorsopalmar-palmarodorsal and lateromedial-mediolateral (opposite sites) bone mineral density (BMD) values were found to be nonsignificant. In the second part of the study the precision of the Norland XR-26 densitometer was tested by measuring 34 metacarpal bones and 34 proximal phalanges, each of them three times, from a single direction. The difference between the individual measurements of the first phalanges and of the metacarpal bones originating from the right or the left side of the same horse were not significant, nor did the age or breed have a significant effect on BMD or bone mineral content (BMC). However, both BMD and BMC are greater in the metacarpal bones than in the proximal phalanges and are higher in geldings than in mares or to stallions, while the BMD or BMC values of mares and stallions did not differ from each other significantly. These data point to the necessity of further BMD studies in a higher number of patients.
Central European Journal of Biology | 2012
Szilvia Kovács; Péter Fehérvári; Krisztina Nagy; Andrea Harnos; Tibor Csörgő
Global environmental processes like climate change could severely affect population level migratory behaviour of long range migrant birds. We analyzed changes in migration phenology and biometrics of three closely-related long-distance migrant Acrocephalus species. We used the records of 12 063 Sedge, 12 913 Reed, and 5 409 Marsh Warblers caught and ringed between 1989–2009, at a Hungarian stopover site. Quantile regressions were used to analyse the changes in spring and autumn migration phenology. Median spring arrival date of Sedge and Reed Warblers shifted 6.5 and 7.5 days earlier, respectively. Autumn arrival of all species shifted one (Reed and Marsh Warblers) or two (Sedge Warbler) weeks later. Mean body mass of adult Reed and Marsh Warblers decreased in spring (by 0.3 and 0.2 grams, respectively) and in autumn (by 0.8 and 0.2 grams, respectively) while body mass of adult Sedge Warblers decreased only in autumn (by 0.4 grams). Mean wing length of all species increased significantly (range of change: 0.6–1 mm). Despite the fact that the studied species are closely related, all three have remarkably different migration strategies. However, similar patterns can be observed in the studied parameters, indicating that global processes may have general effects on these species, albeit through markedly different mechanisms.
Annals of Animal Science | 2015
Andrea Szentléleki; Krisztina Nagy; Kálmán Széplaki; Károly Kékesi; János Tőzsér
Abstract The objective of this study was to examine associations between milking temperament, parity and milk production traits in primiparous and multiparous dairy cows. Twenty-one primiparous and nineteen multiparous Holstein Friesian cows were involved in the investigation on a Hungarian dairy farm. Cows’ stepping behaviour, milk yield and average milking speed were recorded once a month over an entire lactation, during morning milking. Milking temperament was scored by direct human observation on a 5-point-scale (1=very nervous, 5=very quiet) during udder preparation and milking. Multiparous cows showed a little more excitable behaviour at milking than during udder preparation (Mann-Whitney U=14165.00, P=0.032), and they were calmer at premilking preparation than primiparous cows (Mann-Whitney U=14046.00, P=0.001). Milking temperament of multiparous cows during udder preparation was associated with milking speed: nervous cows let down their milk slower (F=9.102, df= 1, P=0.003). Further experiments are needed to repeat the milking temperament test along with sensors measuring heart rate variability of cows in order to better understand the milking behaviour of cows.
Applied Animal Behaviour Science | 2009
Krisztina Nagy; Gábor Bodó; György Bárdos; Andrea Harnos; Peter Kabai
Veterinary Radiology & Ultrasound | 2009
Michael Schramme; Zoltan Kerekes; Stuart Hunter; Krisztina Nagy; Anthony Pease
Applied Animal Behaviour Science | 2010
Krisztina Nagy; Gábor Bodó; György Bárdos; Noémi Bánszky; Peter Kabai
Applied Animal Behaviour Science | 2008
Krisztina Nagy; Anikó Schrott; Peter Kabai
Journal of Equine Veterinary Science | 2010
Krisztina Nagy; Jenő Reiczigel; Andrea Harnos; Anikó Schrott; Peter Kabai
Applied Animal Behaviour Science | 2015
Veronika Konok; Krisztina Nagy; Ádám Miklósi
Journal of Equine Veterinary Science | 2011
Orsolya Kutasi; Nándor Balogh; Zoltan Lajos; Krisztina Nagy; O. Szenci