Wyniki wyszukiwania

1

Współzależność między cechami osobniczymi buhajów ocenianymi w wieku 1 roku, 3 oraz 5 lat

100%

Niedzialek G., Piotrowska K.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

1990

|

tom 395

The analysis was performed on 754 Polish black-and-white sires bom in the period 1970 - 1980. Three age categories (1 year, 3 and 5 years) were considered. Hertability coefficients, genetic and phenotypic correlations were calculated according to the Harveys model Genetic and phenotypic correlations between body weight and the most commonly used body measurements were calculated between the sires aging 1 year and 3 years, 1 year and 5 years, 3 years and 5 years. Low heritability roefficiens occurred in case of body weight and in most body measurements at the age of 1 year, excluding sacrum height (h²=0,66) and width of forechest (h²=0,68). Value of heritability coefficients increased significantly at the age of 3 and 5 years. No significant correlation between body weight at the age of 1 year and 3 years and 1 year and 5 years has been found. Correlation between the same body measurements performed in these periods was also low. High genetic and phenotypic correlations of the body weight and the body measurements at the age of 3 and 5 years have been proved. Results of this study suggest that selection for performance traits should take place when sires reach the age of 3 years.

2

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Wplyw cech osobniczych cielat na wybrane parametry procesu ssania. Cz.II. Czas ssania i liczba zassan

100%

Juszka H.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

1992

|

tom 403

151-156

In the study the effect of some selected specific traits of the calves on the factors contributing on the generation hypotension of the suckling process, was determined.

3

Wplyw cech osobniczych cielat na wybrane parametry procesu ssania. cz.I. Maksymalna wartosc podcisnienia

100%

Juszka H.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

1992

|

tom 403

145-150

This study concerns hypotension as a basic parameter of the suckling process in the calf. A total of 696 calves were examined. Statistical calculations of the least sguares method according to W.P. Harvey (1987). In the cognitive aspect of this study the offect of some selected specific traits of the calves on the maximum walue of hypotension during sukling. However in the utilitarian aspect the study results were referred to the technique of mechanical milking.

4

Zmiany cech osobniczych w izolowanej populacji niepylaka apollo.

86%

Adamski P., Witkowski Z.

Działalność Naukowa PAN. Wybrane Zagadnienia

|

2000

|

tom 09

59-61

5

Stan odzywiania dzieci w wieku przedszkolnym okreslany wskaznikami antropometrycznymi a ich wydolnosc wysilkowa

86%

Hyzyk A., Stefanska M., Gawecki J.

Roczniki Akademii Rolniczej w Poznaniu. Technologia Żywności

|

1993

|

nr 18

63-70

6

Percepcja krajobrazu zamieszkiwania - obraz wyznawanych wartosci i cech osobowych

86%

Bohm M.

Architektura Krajobrazu. Studia i Prezentacje

|

2009

|

nr 2

73-83

7

Wpływ czynników pozagenetycznych na kształtowanie się cech osobniczych buhajków odchowanych w centralnych wychowalniach buhajków na Pomorzu Środkowym w latach 1973-1985

86%

Chmielnik H., Sawa A., Rohde A., Jaworski M.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

1990

|

tom 395

Growth and development of bull calves in two rearing stations in the middle Pomerania region was observed for over 13 years. Influence of such factors as year, season of birth, place of origin, breeding class, on the value of performance traits was studied. Essential influence of all above factors on the examined features has been proved.

8

Intraindividual seasonal decline of egg-volume in Common Tern Sterna hirundo

72%

Gonzalez-Solis J., Becker P. H., Jover L., Ruiz X.

Acta Ornithologica

|

1999

|

tom 34

|

nr 2

185-190

The seasonal decline in egg-volume on the basis of the individual changes in 35 known-age female Common Terns Sterna hirundo was studied with data available for 3-6 years. Interindividual differences were significant for both laying dates and egg-volume. Thus, to examine whether the decline was an effect of an assortment of females with the timing of breeding according to their individual egg-volume, the individual values of laying date were correlated with egg-volume. Correlation was not significant, suggesting that seasonal decline in egg-volume was not due to interindividual differences. Instead, egg- volume showed a gradual decrease with the progress of the season at intraindividual level i.e. the later an individual female laid in the season the smaller was the egg-volume. Moreover, the seasonal decline in egg-volume was not due to a simultaneous increase in egg-volume with an advancement of the timing of breeding with age, since the rate of seasonal decrease in egg- volume was similar for young and old birds. Individual average of laying date accounted for 22% of the individual average of fledgling production whereas egg-volume was not significantly correlated with fledging production. Thus, it is suggested that seasonal decline in egg-volume is a non-adaptive consequence of physiological effect of condition on both timing of breeding and egg-volume.

9

Przyczyny wystepowania zapalenia gruczolu mlekowego u krow

72%

Kupczynski R., Korczynski M.

Hodowca Bydła i Trzody Chlewnej

|

2003

|

nr 02

25-28

10

Ocena stanu zachowania wybranych populacji goryczki krzyżowej (Gentiana cruciata) na Pomorzu Zachodnim

72%

Piotrowska J.

Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica

|

2010

|

tom 14

11

Charakterystyka ekologiczna populacji Epipactis atrorubens (Hoffm.) Besser na Wybrzeżu Słowińskim

72%

Sobisz Z., Parzych A.

Słupskie Prace Biologiczne

|

2013

|

nr 10

12

Zmieniający się klimat i jego wpływ na awifaunę Polski

72%

Tryjanowski P., Sparks T. H., Skorka P.

Ptaki. Biuletyn Ogólnopolskiego Towarzystwa Ochrony Ptaków

|

2010

|

nr 1

13

Procesy kształtowania miasta innowacyjnego

72%

Zioło Z.

Studia. Polska Akademia Nauk. Komitet Przestrzennego Zagospodarowania Kraju

|

2012

|

tom 141

14

Charakterystyka wybranych cech jakosci osobniczej samcow saren [Capreolus capreolus L. 1758] z Wyzyny Lubelskiej

72%

Dziedzic R., Flis M.

Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica

|

2006

|

tom 24

415-422

15

Phenotypic selection on body size in the Great Tit Parus major [Niepolomice Forest, Poland]

58%

Zajac T.

Acta Ornithologica

|

1999

|

tom 34

|

nr 2

219-226

In 1991-1995 fourteen morphological traits of Great Tits breeding in nest boxes were measured. Their relation to fitness was checked in elements of a tifs biology: survival of young to first reproduction, competition for nesting places, first and second broods, lifetime survival and reproduction. Selection intensity (i) was calculated for principal components of body size. Phenotypic selection evidences were mainly singular. Comparison of body size of individuals recruited to the studied population revealed that males of larger body size were recruited to the population. An experiment showed that individuals with larger bills won competition for nest boxes (i for bill length ranged from 0.05 in males to 0.34 in females). Clutch size depended positively on the measurements of males (i = 0.07 and i = 0.11 respectively), and negatively on the body measurements of females during the first brood (i = -0.08 in 1995). During the second broods there was a positive trend in relation between body size of parents and young condition (for females i = 0.05 and i = 0.02 respectively, for males i = 0.08 in 1992). Intensive selection on body size (i = -0.34 for males, i = -0.61 for females), due to a catastrophic impact of bad weather was recorded as well. Analysis of lifetime data on the longevity and mean breeding success per year, revealed for 1991 cohort of individuals a strong negative selection on body size in females (i = -0.46 with regard to breeding success, i = -0.16, longevity) and positive selection on forearm length in males in 1993 (i = -0.128, longevity). For 8 cases of selection, its direction in males favoured larger body size (7 cases), whereas in females selection directions were differentiated (3 positive, 3 negative). This pattern was concordant with sexual size dimorphism in the studied population.

16

Ekologia populacji Veratrum lobelianum Bernh. w Sudetach

58%

Lukaszynska I.

Acta Universitatis Wratislaviensis. Prace Botaniczne

|

1998

|

tom 77

17

Ocena poziomu cech osobniczych i wskaźnika masywności u buhajów czarno-białych w zależności od dolewu krwi rasy holsztyńsko-fryzyjskiej

58%

Kawczynska M., Kamieniecki H.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

1990

|

tom 395

The most cases of statistically significant differences between bull calves of different were found in rearing stations where the traits formed at a more favourable level. The investigated traits for all genotype groups of bulls assumed significantly different values in particular years of rearing. Crosses (BW × HF) reached higher body weight and higher daily weight gains than the inland BW bulls. The height at withers depended on the genotype and the interaction: genotype x rearing year. The bulls were the taller the greater was the HF blood addition. The chest girth depended on the genotype and rearing year The smallest was recorded in the BW bulls. The measurement coefficient depended, first of all, on the genotype. The highest values of this index were found for BW bulls; the higher was the HF blood addition the lower was the massiveness index. To the A and B class the lowest number of BW bulls was assigned, whereas the highest number of bulls assigned to these classes was of bulls of the genotype of 50% and 75% HF.

18

Karol Robert Darwin. Wspomnienie pośmiertne

58%

Wrzesniowski A.

Wszechświat

|

1882

|

tom 1

|

nr 05

19

Charakterystyka populacji wielosiłu błękitnego Polemonium coeruleum L. z Zielonego Bagna znad rzeki Czarnej Hańczy

58%

Krawczyk A., Krawczyk J.

Acta Universitatis Wratislaviensis. Prace Botaniczne

|

1998

|

tom 77

20

Poszukiwanie możliwości wczesnej selekcji buhajów hodowlanych na podstawie badań zależności między wskaźnikami krwi buhajków w okresie odchowu a ich płodnością i niektórymi cechami osobniczymi

58%

Sawa A.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

1990

|

tom 395

Investigations were carried out in rearing station in Mrozowo on 92 bull calves. In the first year of life blood samples were collected every month and level of hemoglobin, red blood cells, white blood cells, hematocrits, total protein and its fractions, urea, nitrogen a-amine, AspAT, ALAT, AP, glucose, cholesterol and bilirubin were analysed. Usefulness for reproduction was defined by quantity and quality of semen obtained from bulls it 12-th month of life. Results were combined in correlative pairs and subjected to analysis of multiple regression. Occurence of great fluctuations of calculated correlation coeflicients (from positive to negative) and deficiency of longer periods with constant level of relationship suggest that examined blood indices are rather useless in prognosing semen quality.

Ograniczanie wyników

Współzależność między cechami osobniczymi buhajów ocenianymi w wieku 1 roku, 3 oraz 5 lat

Wplyw cech osobniczych cielat na wybrane parametry procesu ssania. Cz.II. Czas ssania i liczba zassan

Wplyw cech osobniczych cielat na wybrane parametry procesu ssania. cz.I. Maksymalna wartosc podcisnienia

Zmiany cech osobniczych w izolowanej populacji niepylaka apollo.

Stan odzywiania dzieci w wieku przedszkolnym okreslany wskaznikami antropometrycznymi a ich wydolnosc wysilkowa

Percepcja krajobrazu zamieszkiwania - obraz wyznawanych wartosci i cech osobowych

Wpływ czynników pozagenetycznych na kształtowanie się cech osobniczych buhajków odchowanych w centralnych wychowalniach buhajków na Pomorzu Środkowym w latach 1973-1985

Intraindividual seasonal decline of egg-volume in Common Tern Sterna hirundo

Przyczyny wystepowania zapalenia gruczolu mlekowego u krow

Ocena stanu zachowania wybranych populacji goryczki krzyżowej (Gentiana cruciata) na Pomorzu Zachodnim

Charakterystyka ekologiczna populacji Epipactis atrorubens (Hoffm.) Besser na Wybrzeżu Słowińskim

Zmieniający się klimat i jego wpływ na awifaunę Polski

Procesy kształtowania miasta innowacyjnego

Charakterystyka wybranych cech jakosci osobniczej samcow saren [Capreolus capreolus L. 1758] z Wyzyny Lubelskiej

Phenotypic selection on body size in the Great Tit Parus major [Niepolomice Forest, Poland]

Ekologia populacji Veratrum lobelianum Bernh. w Sudetach

Ocena poziomu cech osobniczych i wskaźnika masywności u buhajów czarno-białych w zależności od dolewu krwi rasy holsztyńsko-fryzyjskiej

Karol Robert Darwin. Wspomnienie pośmiertne

Charakterystyka populacji wielosiłu błękitnego Polemonium coeruleum L. z Zielonego Bagna znad rzeki Czarnej Hańczy

Poszukiwanie możliwości wczesnej selekcji buhajów hodowlanych na podstawie badań zależności między wskaźnikami krwi buhajków w okresie odchowu a ich płodnością i niektórymi cechami osobniczymi