Wyniki wyszukiwania - Biblioteka Nauki

1

Obstetrical problems and stillbirth in beef cattle

100%

Citek J. , Hradecka E. , Rehout V. , Hanusova L.

Animal Science Papers and Reports

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2011

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tom 29

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nr 2

EN

Out of 5970 calvings, 4.29% had an abnormal course (dystocia). The occurrence of stillbirths was 6.98% of all births and 4.15% of normal course births. Stillbirths occurred in 70.31% of dystocias. The highest frequency of stillbirths was in Blonde d´Aquitaine (8.59%) and the lowest in Gasconne (3.96%) cows. A narrow pelvis and an oversized foetus were the causes of more than 50% cases of dystocia. In Charolaise, an extremely high occurrence of oversized foetus, while in Blonde d´Aquitaine uterine inertia were found. A narrow pelvis was especially frequent as the cause of dystocia in the Aberdeen Angus and Limousine breeds. On analysis of stillbirths the most important effect was of the calving course with 24.47% impact on variability. Difficult calving increased the odds of stillbirth by 76 compared to normal calving. The heritability of stillbirth was estimated as 7.80%. It is recommended to restrict the use of sires with a higher incidence of dystocia or stillbirth in the offspring. As genetically determined variability is very low, other systematic measures are necessary to control stillbirth and dystocia. These are: supervision of the herd, obstetrical assistance, appropriate heifer rearing, mating cows at the proper live weight and proper nutrition during the pregnancy.

2

Regenerace ceske cervinky - masna uzitkovost krizencu F1 generace

100%

Rehout V. , Citek J. , Kosvanec K.

Zeszyty Naukowe. Przegląd Hodowlany

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1999

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tom 40

3

Comparison of growth hormone and kappa-casein gene polymorphism in Polish Red and German Red cattle breeds

100%

Citek J. , Filistowicz A. , Rehout V. , Neubauerova V.

Journal of Applied Genetics

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2000

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tom 41

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nr 3

4

Microsatellite R03 in PRNP gene as a marker of BSE in cattle

100%

Pubalova M. , Rehout V. , Citek J. , Blahova B.

Animal Science Papers and Reports. Supplement

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2004

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tom 22

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nr 2

5

Peri-natal mortality in the Czech population of dairy cattle

100%

Hradecka E. , Citek J. , Rehout V.

Animal Science Papers and Reports. Supplement

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2004

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tom 22

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nr 2

6

Genetic distance between the Polish Red, Czech Red and German Red cattle estimated based on selected loci of protein coding genes and DNA microsatellite sequences

88%

Zaton-Dobrowolska M. , Citek J. , Filistowicz A. , Rehout V. , Szulc T.

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nr 1

EN

The investigations covered the representatives of three red cattle breeds: Polish Red (PR, n = 65),Czech Red (CR, n = 54) and German Red (GR, n = 28). The allele frequency was analysed for five protein genes: CSN3, LGB, GH, PRL and Pit-1 as well as 13 microsatellite sequences. In the populations of PR and GR cattle the frequencies of protein loci were similar, with a clearly marked domination of one allele. Only in the CR cattle, allele frequencies were similar for all the protein loci analysed (with the exception of Pit-1) with no clear dominance of any one allele. Out of the 13 microsatellite sequences analysed six showed a similar distribution of the allele frequencies in all three breeds, while the remaining ones were characterized by a wide variation. On the basis of the results obtained the genetic distance was estimated between breeds. The smallest genetic distance was observed between the PR and GR population. In turn, between the PR and CR as well as CR and GR populations, the genetic distance proved to be similar, the most similar being obtained on the basis of Nei method.

PL

Badania obejmowały trzy rasy bydła czerwonego − polską czerwoną (PR, n = 65), czeską czerwoną (CR, n = 54) i niemiecką czerwoną (GR, n = 28). Przeanalizowano frekwencje alleli dla pięciu genów białek: CSN3, LGB, GH, PRL i Pit-1 oraz 13 sekwencji mikrosatelitranych. W populacjach PR i GR frekwencje w loci białek układały się podobnie, z wyraźnie zaznaczoną przewagą jednego z alleli. Jedynie w rasie CR we wszystkich analizowanych loci białek, oprócz Pit-1, frekwencje alleli były zbliżone i nie zaznaczała się wyraźna dominacja częstości występowania jednego z nich. Sześć z 13 sekwencji mikrosatelitarnych miało podobny rozkład frekwencji alleli we wszystkich trzech rasach, natomiast pozostałe charakteryzowały się znacznym zróżnicowaniem. Na podstawie uzyskanych wyników oszacowano dystans genetyczny między rasami. Najmniejszy stwierdzono między populacją PR a GR.Natomiast między populacjami PR a CR oraz CR a GR wielkości dystansu kształtowały się podobnie, a najbardziej wyrównane wyniki uzyskano metodą Nei’a.

7

An estimation of the genetic distance between Polish Red and other Red Cattle breeds on the basis of selected milk protein loci

88%

Zaton-Dobrowolska M. , Citek J. , Filistowicz A. , Rehout V. , Szulc T.

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nr 2

EN

The material for the study were six populations of Red Cattle, including three samples of the Polish Red cattle population (PC’69, n = 203, PC’82, n = 261 and PC’96, n = 313) and one each of the Danish Red (DC, n = 169), German Red (NC, n = 510) and Czech Red (CC, n = 14). DNA was isolated from blood, according to the method by Gemmell and Akiyama (1996). All individuals were genotyping for the following proteins: a S1-casein, b-casein, k-casein and b-lactoglobulin. The frequency of alleles was estimate and was used for the estimation of the genetic distance between populations. Using the PHYLIP ver. 3.5c software the genetic distance was determined according to 1) Nei, 2) Cavali-Sforza and 3) Reynolds. All the populations demonstrated a similar distribution of allele frequencies at individual loci. Only the Czech Red showed different tendencies as regards b- and k-casein and b -lactoglobulin. This may have been the effect of the smaller population size as compared to the remaining breeds. Genetic distances estimated by these three using methods were similar. The smallest genetic distance was observed between populations PC96 and NC (0.0007). In turn, the highest value was obtained between population DC and CC (0.0776). In the case of the genetic distance calculated according to the formulas by Cavalli-Sforza and Reynolds, the values obtained were higher then value of genetic distance estimated by Nei. The comparatively low values for the genetic distance obtained in the present studies may indicate that the breeds analysed originate from a common ancestor or lived on neighbouring geographical regions, what could lead to a frequent exchange of genes. The considerable similarity between those breeds could also be caused by a similarly conducted selection, based on similar assumptions (similar type of production). Those populations demonstrate similar gene pools what may be used for common preserve breeding programmes, which would decrease the danger of inbreeding. An analysis of the data collected over 30 years for the three populations of the Polish Red cattle, renders it possible to conclude that the frequency of individual alleles of the proteins examined are subjected to a small but continuous change.

8

The polymorphism of prion protein gene in contemporaries of BSE-positive cows

88%

Rehout V. , Citek J. , Dvorak J. , Pubalova M. , Blahova B.

Animal Science Papers and Reports. Supplement

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2004

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tom 22

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nr 2

9

Genetic variation of milk proteins in cattle maintained as gene reserve

88%

Blahova B. , Rehout V. , Kubek A. , Citek J. , Pubalova M.

Animal Science Papers and Reports. Supplement

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2004

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tom 22

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nr 2

10

Report on restitution and breeding of Czech Red cattle in the Czech Republic

88%

Rehout V. , Kosvanec K. , Citek J. , Filistowicz A. , Hradecka E.

Animal Science Papers and Reports. Supplement

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2004

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tom 22

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nr 2

11

The DGAT1 polymorphism and breeding value of Holstein sires

88%

Citek J. , Panicke L. , Rehout V. , Blahova B. , Pavkova J.

Animal Science Papers and Reports. Supplement

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2004

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tom 22

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nr 2

12

Prediction of pork belly composition using the computer vision method on transverse cross-sections

75%

Citek J. , Stupka R. , Okrouhla M. , Vehovsky K. , Stadnik L. , Nemeckova D. , Sprysl M.

Annals of Animal Science

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2015

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tom 15

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nr 4

13

Screening genetic disorder in cattle

75%

Citek J. , Rehout V. , Pavkova J. , Blahova B. , Hala K. , Strapak P.

Animal Science Papers and Reports. Supplement

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2004

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tom 22

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nr 2

14

The influence of genetically modified Bt maize MON 810 in feed mixtures on slaughter, haematological and biochemical indices of broiler chickens

63%

Rehout V. , Kadlec J. , Citek J. , Hradecka E. , Hanusova L. , Hosnedlova B. , Hosnedlova B. , Lad F.

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2009

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tom 18

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nr 3