Wyniki wyszukiwania - Biblioteka Nauki

1

Biosynteza melanin i jej wplyw na umaszczenie zwierzat

100%

Wierzbicki H.

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nr 11

695-699

2

Dziedziczenie stopnia pigmentacji niebieskiego umaszczenia oraz parametry genetyczne rozmiaru i jakosci skory lisa polarnego [Alopex lagopus L.]

100%

Wierzbicki H.

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tom 45

227-242

PL

Celem pracy była próba określenia zasad dziedziczenia intensywności pigmentacji okrywy włosowej lisów polarnych niebieskich oraz oszacowanie parametrów genetycznych [współczynników odziedziczalności oraz współczynników korelacji fenotypowych, genetycznych i środowiskowych] cech skór, mających największy wpływ na cenę uzyskiwaną przez skórę futerkową w systemie sprzedaży aukcyjnej. Badaniami objęto 1553 zwierzęta, hodowane w latach 1997-1998 na Fermie Lisów Polarnych i Pospolitych w Śniatach. Parametry genetyczne oszacowane zostały metodą REML, a zasady dziedziczenia odcienia niebieskiego umaszczenia ustalone zostały w oparciu o analizę frekwencji odcieni umaszczenia zasadniczego wśród rodziców i ich potomstwa. Uzyskane wyniki sugerują, że odcień niebieskiego umaszczenia lisów polarnych determinowany jest poligenicznie i dziedziczy się zgodnie z zasadami przekazywania cech ilościowych, a wielkości oszacowanych parametrów genetycznych wskazują na możliwość prowadzenia skutecznej pracy hodowlanej, wykorzystującej zmienność genetyczną populacji i zależności występujące między cechami.

EN

The aim of the study was the attempt of determination of principles of blue coat colour intensity inheritance in Arctic foxes. Moreover, genetic parameters [coefficients of heritability, phenotypic, genetic and environmental correlations] of skin characteristics affecting its price at the auction-house were estimated. The animals taken for the study consisted of 1553 foxes bred on the Śniaty Fox Farm in the years 1997-1998. Genetic parameters were estimated with the use of REML method. Analysis of coat colour intensity among parents and progeny was performed in order to explain the rules of inheritance of fur coloration. The results obtained suggest that coat colour intensity is determined by polygenes and is inherited like a quantitative character. The genetic parameters of the skin traits indicate that effective breeding programmes based on population genetic variability and correlations between skin traits can be applied.

3

Genetyczne uwarunkowanie typu barwnego oraz pokroju i okrywy włosowej lisa polarnego

63%

Wierzbicki H. , Filistowicz A.

Zeszyty Naukowe. Przegląd Hodowlany

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1999

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tom 42

4

Dobrostan na fermach lisow

63%

Wierzbicki H.

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tom 65

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nr 04

25-26

5

Genetic parameters and factors affecting body size and fur traits in arctic foxes (Vulpes lagopus)

51%

Zaton-Dobrowolska M. , Mucha A. , Wierzbicki H. , Przysiecki P.

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2011

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tom 14

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nr 4

6

Dobrostan miesozernych zwierzat futerkowych a przyszlosc ich hodowli i uzytkowania

51%

Filistowicz A. , Wierzbicki H. , Zajaczkowska A.

Prace i Materiały Zootechniczne

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1999

|

tom 55

7-15

7

Ocena odpornosci posiarowej zrebiat we wczesnym okresie neonatalnym

51%

Wlodarczyk-Szydlowska A. , Nowacki W. , Wierzbicki H.

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nr 09

1071-1073

8

Wplyw wybranych czynnikow na jakosc siary klaczy i poziom immunoglobulin siarowych u zrebiat

51%

Wlodarczyk-Szydlowska A. , Nowacki W. , Wierzbicki H.

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tom 61

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nr 08

923-926

9

Total merit index to estimate the breeding value of Polish arctic foxes

51%

Wierzbicki H. , Zuk B. , Chudoba K.

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nr 2

10

Parametry genetyczne cech pokrojowych krow pierwiastek rasy czarno-bialej i czerwono-bialej

51%

Kruszynski W. , Pawlina E. , Wierzbicki H.

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nr 02

196-200

EN

The aim of the study was to estimate genetic parameters (heritability, genetic and phenotypic correlations) of conformation traits in primiparous cows of Black and White and Red and White breeds. Records of conformation scores of 7,814 cows born between 19931996 were analyzed in order to estimate genetic parameters for 11 traits of conformation. The cows of Black and White (n = 2240) and Red and White (n = 4574) breeds were kept in 139 herds in the Śląsk Opolski region. Genetic parameters were estimated using an animal model and DFREML computer package. Estimated heritability ranged from 0.58 (capacity) to 0.06 (chest circumference). The highest genetic correlations were found between the total score and udder (0.81), capacity (0.91), and type and conformation (0.91). High genetic correlations were also found between linear traits of udder (fore udder attachment, udder depth) and the udder score (0.78 and 0.45, respectively). The results obtained indicated considerable differences between the analyzed breeds as far as correlations between traits are concerned.

11

A comparison of inbreeding effect on litter size and fur coat traits in Polish and Finnish blue fox populations

51%

Wierzbicki H. , Peura J. , Zuk B. , Stranden I.

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nr 2

12

Genetic, phenotypic and environmental trends of conformation traits in arctic fox Alopex lagopus [L.]

51%

Wierzbicki H. , Filistowicz A. , Przysiecki P.

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2000

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tom 41

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nr 2

13

Estimation of variance components for performance traits in Ukrainian pig populations

51%

Getya A. , Chub O. , Willeke H. , Wierzbicki H.

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nr 2

14

High-frequency marker haplotypes in the genomic selection of dairy cattle

45%

Mucha A. , Wierzbicki H. , Kaminski S. , Olenski K. , Hering D.

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2019

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tom 60

|

nr 2

15

Behawior i uzytkowosc lisow polarnych w zaleznosci od sposobu grupowania odsadzonych szczeniat. Czesc I. Behawior pokarmowy odsadzonych szczeniat

45%

Filistowicz A. , Kiecon D. , Przysiecki P. , Tokarska M. , Wierzbicki H.

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tom 41

39-47

PL

Zbadano związek między stosunkiem liczbowym płci i spokrewnieniem w grupie na behawior pokarmowy odsadzonych szczeniąt w pierwszym tygodniu po odłączeniu od matek. Szczenięta przydzielono do 9 grup (po 4 w klatce) na zasadach analogów (termin urodzenia, masa ciała, płeć i spokrewnienie). Optymalną obsadę klatki stanowiły szczenięta jednakowo wyrośnięte, obojga płci, zwłaszcza pochodzące z różnych miotów. W tak zestawionych grupach najwcześniej ustalała się hierarchia, sprzyjająca spokojnemu i dłuższemu żerowaniu.

EN

The relation between sex composition and family connection in the group and its influence on the behaviour of weaned kits in the first week of separation from the mothers was studied. Thirty six 7-week old kits from 8 litters, born in the first decade of June from one-year old dams, were divided into 9 groups (4 kits each) by the criteria of birth time, body weight, sex and family connection. Three male groups, three female groups and three mixed (2x2) groups were formed. The groups were composed of kits of the same litter (groups 1, 2, 7), two kits from different litters (groups 2, 5, 8) and kits of different litters (groups 3, 6, 9). Observation of the kits' behaviour were conducted for the first five days after weaning, two times a day (8 a.m. - 11 a.m. and 4 p.m. -7 p.m.). Observations covered the time of feeding, consuming and resting, and were focused on the time of active consuming and on the amount of fodder. Kits were fed with homogenized fodder, which was given at libitum twice a day (1/3 ration in the morning and 2/3 in the afternoon). As a rule, kits of the mixed groups consumed fodder easily and stopped fighting and pushing one another already on the second day of observation. Male groups fought often, until a hierarchy was established. The time of setting a hierarchy was longest in the female group. Kits of mixed groups consumed fodder longer and usually easier than others. Female groups took the biggest amount of fodder. Optimal occupants of a cage were kits equally grown, both male and female and from different litters. In groups of such composition the hierarchy got established most early, resulting in quieter and longer feeding.

16

A microsatellite study in the Łęgucki Młyn/Popielno hybrid zone reveals no genetic differentiation between two chromosome races of the common shrew (Sorex araneus)

38%

Moska M. , Wierzbicki H. , Macierzynska A. , Strzala T. , Maslak R. , Warchalowski M.

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2011

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tom 56

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nr 2

EN

This study investigated a chromosome hybrid zone between two chromosomal races of the common shrew (Sorex araneus). Gene flow and genetic structure of the hybrid zone, located in the northeast of Poland, were studied using seven polymorphic autosomal microsatellite loci (L9, L14, L33, L45, L67, L68, L97) and a Y-linked microsatellite locus (L8Y). Seventy-five animals (46 of the Łęgucki Młyn race and 29 of the Popielno race) from nine different localities were examined and the data were analyzed using hierarchical AMOVA and F-statistic. The studied microsatellite loci and races (divided into nine geographical populations) were characterized by observed heterozygosity (H O), expected heterozygosities within (H S), and between (H T) populations, inbreeding coefficient (F IS), fixation index (F ST), and average allelic richness (A). We found that genetic structuring within and between the two chromosome races were weak and non-significant. This finding and unconstrained gene flow between the races indicates a high level of migration within the Łęgucki Młyn/Popielno hybrid zone, suggesting that evolutionarily important genetic structuring does not occur in interracial zones where races which are not genetically distinct come into contact.

17

Przydatnosc wybranych parametrow krwi w monitorowaniu prawidlowosci treningu koni dyscypliny skokow przez przeszkody

38%

Jawor P. , Stefaniak T. , Borkowski J. , Przewozny M. , Wierzbicki H. , Swagemakers J.

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nr 02

213-218

EN

The aim of the study was to evaluate whether any differences can occur in the reactions of selected horse blood parameters to training in relation to the length of show jumping horse training and horse achievements. The research material consisted of blood and serum collected from 20 horses (aged 4-11 years). The animals were divided into 4 groups of 5 horses each depending on their number of years in show jumping training, their achievements in show jumping contests, and their sport potential. The following parameters were examined in the blood and serum: hematocrit, hemoglobin concentration, red and white blood cells count, granulocytes, platelets, fibrinogen, total plasma proteins, lactate, and creatine kinase activity. Blood samples were collected four times from each horse: before show jumping training, 5 and 30 minutes after training, and 24 hours after training. The training was followed by an increase of monitored hematological indicators, which was a physiology reaction to physical effort; no abnormalities were noticed. Horses with outstanding sport potential from both age groups were characterized by higher initial values of parameters associated with erythrocyte system, i.e., Hb, Ht. At the same time, changes caused by physical effort (an increase of Ht, Hb, and RBC) proceeded more steadily in the case of horses with outstanding sport potential than others. Physical effort caused a short-term increase of granulocytes and platelets. The marked initial concentration of lactate acid was higher than stated in the literature, and in individual cases reached concentrations of 1.1 to 2.2 mmol/l. Creatine kinase increased in activity following the training process but did not increase any further, which indicated that there were no significant injuries in the muscular system. Despite the existing tendencies, the differences between horses with outstanding sport potential and average animals were not statistically significant and therefore did not facilitate predicting the sport potential of horses, but they may be useful in evaluating the appropriateness of the training process.