Wyniki wyszukiwania - Biblioteka Nauki

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Breed differences in behaviour-related characteristics of stallions evaluated in performance tests

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Gorecka-Bruzda A. , Jezierski T.

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nr 1

EN

Present study was aimed at testing the possible breed differences in behaviour-related traits evaluated in performance tests of stallions. The results as regards the traits labelled “character”,“temperament”, “trainability” and “rideability” were examined. The results of 326 three-years old stallions submitted to the 100-days training at two training stations in the period 2004-2007 were used. Breeds tested were Polish Halfbred Horse (PH), Małopolska (M), Wielkopolska (W) and horses of foreign origin (F). Horses of F breeds scored highest on all behavioural characteristics.The M horses scored the lowest on “character”, differing significantly from other breeds. PH and W horses did not differ in regards to this trait. There were no differences in “temperament” between the breeds, except for the F horses. “Trainability” was rated the lowest in M horses, increasing successively in W, PH and F horses. The “rideability” within PH, M and W horses was similar but was significantly lower than in F breeds. Expectations of raters as per horses’ mental characteristics were met best by the F horses; the M horses met them at the lowest level. It may be concluded that F horses are best fit to fulfil the breeding objectives in terms of their behavioural characteristics. It should be noted that the breeding objective seems to favour behavioural characteristics enabling horses to perform well in sport rather than in leisure. It should be also emphasized that the metod of evaluation of behaviour-related traits of stallions in performance tests may not be valid enough to detect real differences between individuals and breeds.

PL

Podjęte badanie miało na celu zbadanie różnic w cechach związanych z zachowaniem, ocenianych podczas prób dzielności ogierów zgodnie z programami hodowlanymi koni ras półkrwi. Przeanalizowano oceny „charakteru”, „temperamentu”, „przydatności do treningu” i „jezdności” 326-ściu trzyletnich ogierów półkrwi, poddanych treningowi 100-dniowemu w dwóch zakładach treningowych, w latach 2004-2007. Ocenianymi rasami były: polski koń szlachetnej półkrwi (PH), małopolska (M), wielkopolska (W) oraz ogiery ras zagranicznych (F). Najwyższe oceny we wszystkich badanych cechach uzyskały konie należące do grupy F. Konie M miały najniższe noty za „charakter”, różniąc się istotnie od wszystkich badanych ras. Poza istotną przewagą koni F, nie stwierdzono różnic w „temperamencie” pomiędzy końmi pozostałych ras. Najniższa „przydatność do treningu” cechowała konie M, a w rosnącej kolejności uplasowały się ogiery W, PH i F. „Jezdność” koni w obrębie M, W i PH nie była zróżnicowana, natomiast była istotnie niższa niż u koni F. Wyniki badań wskazują, że oczekiwania oceniających co do zachowania najlepiej spełniają konie F, a konie M najsłabiej, co pozwala na wyciągnięcie wniosku, że pod względem cech zachowania konie F rokują najlepiej co do realizacji celów hodowlanych, jakim jest raczej koń wierzchowy o wyższej przydatności do sportu niż do rekreacji. Należy jednak podkreślić, że metody oceny zachowania, stosowane podczas prób dzielności, mogą nie spełniać wymogu trafności oceny faktycznych różnic międzyosobniczych i rasowych.

2

Uczyc zgodnie z przeznaczeniem

100%

Gorecka-Bruzda A.

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nr 1

36-39

3

Current situation and prospects for the horse meat market in Poland and the world

80%

Jastrzebska E. , Daszkiewicz T. , Gorecka-Bruzda A. , Felis D.

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nr 04

EN

Humans have developed strong emotional connections with horses throughout the centuries, and horses continue to occupy a special place among other livestock animals. For this reason, horses are reared industrially for slaughter only in some countries. Horse meat is characterized by a high content of protein of high biological value and low levels of fat with a desirable fatty acid profile. Aged horse meat has a long shelf life, and it is an attractive food and raw material for further processing. The high demand for high quality raw horse meat creates new opportunities for breeders, and it could become an alternative or supplementary source of income for traditional livestock farms.

4

Długość życia i reprodukcji klaczy koników polskich z rezerwatu PAN w Popielnie

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Jaworski Z. , Jastrzebska E. , Gorecka-Bruzda A. , Wolinska K.

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nr 5

5

Wypas koników polskich na terenach cennych przyrodniczo - kształtowanie krajobrazu i zachowanie bioróżnorodności

80%

Jaworski Z. , Jastrzebska E. , Gorecka-Bruzda A.

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tom 86

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nr 5

6

Profiles of oestradiol, testosterone and androstenedione in stable vs. forest born young Konik Polski horses

71%

Gorecka-Bruzda A. , Suwala M. , Kaminska B. , Jaworski Z. , Jezierski T.

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nr 2

EN

Blood plasma profiles of equine sex steroids are useful in diagnose and for different scientific purposes. The aim of this study was to monitor oestradiol, testosterone and androstenedione blood plasma profiles in foals of age between 6 and 18 months, in order to establish the reference levels for male and female of young Konik Polski horses. The effects of birth place (stable vs. forest), age and season. Fifty two Konik Polski horses, born in the forest reserve (n=26) and in the stable (n=27)were studied.Level of oestradiol differed between sexes at the age of 12 months, whilst androgens were higher in males of every age group. At all ages the level of oestradiol, testosterone and androstenedione did not differ between stable and forest born colts and fillies, except for fillies at 18 months of age. The highest level of oestradiol in both colts and fillies was found at the age of 15 months, i.e. at the late summer. In colts, testosterone and androstenedione concentrations were at their nadir at 6 and 9 months of age, then they rose abruptly at month 12 of age and remained significantly elevated until month 18. In fillies, the highest concentrations of these androgens were found in August-September,when the females were 15 months old. The profiles and the role of sex steroid hormones in social and reproductive behaviours are discussed.