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1

An analysis of the genetic relationships and inbreeding in Tatra Shepherd Dogs depending on the type of breeding

100%
Sweklej E., Horoszewicz E., Niedziolka R.
Folia Biologica
|
2020
|
tom 68
|
nr 4
2
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Analysis of the inbreeding level in the active population of pigs of different breeds in Poland

86%
Zak G., Szyndler-Nedza M., Eckert R.
Annals of Warsaw University of Life Sciences - SGGW. Animal Science
|
2016
|
tom 55[2]
Analysis of the inbreeding level in the active population of pigs of different breeds in Poland. Pig breeders in Poland have made extensive use of the BLUP-AM method since 1999. The application of this method for evaluating the breeding value of pigs improves their breeding value in nucleus herds and in the general population. On the other hand, the use of many sources of information (including pedigree information) in the calculations considerably increases the risk of inbreeding. The objective of the study* was to estimate the level of inbreeding in sows and boars from the domestic pig population, which have been selected for more than ten years based on the BLUP-AM estimated breeding value. The study involved Polish Large White, Polish Landrace, Hampshire, Duroc, Pietrain and Puławska sows and boars born between 2007 and 2011. Data on a total of 16 842 sows and 977 boars representing the 6 breeds raised in Poland were collected for the pedigree analyses. During the analyzed period, the coefficient of inbreeding in sows ranged from F = 0 to F = 0.25 (14 animals). Most of the animals were non-inbred (70% in the PLW and Puławska, over 80% in the PL, Duroc and Pietrain and 100% in the Hampshire). For the boars, the coefficient of inbreeding varied from 0 to 0.1875 (1 animal). The proportion of non-inbred boars was 77% in the PLW, 91% in the PL, 63% in the Puławska, and about 80% in the Duroc and Pietrain breeds. The results point to the appropriate structure of the pig population in terms of inbreeding, which shows that the selection of animals for mating has been correct and there have been no negative consequences of using the BLUP method.
3

Mating and selection in national Arabian horse breeding: inbreeding coefficients analysis

86%
Glazewska I.
Electronic Journal of Polish Agricultural Universities. Series Animal Husbandry
|
2004
|
tom 07
|
nr 1
The matings and selection of horses for the breeding stock in national Arabian horse studs from the 1947-1948 to 1996-1997 seasons were analysed. The data were examined taking into account the average values of the inbreeding coefficient (F). It was stated that breeders constantly avoided mating highly-related horses. Matings which concluded in abortion exhibited a higher level of inbreeding, while those which were either barren or ended in the death of the foal were characterised by lower average values of the inbreeding coefficient. In the selection of horses for the breeding stock, breeders preferred stallions with lower inbreeding coefficients. Moreover, among the stallions of the same father those with F values below the average were selected (statistically significant regularity). This tendency, however, was not observed in the selection of mares.
4

A study on efficiency of recursive algorithm for estimating relationship coefficients

58%
Gierdziewicz M., Kania-Gierdziewicz J.
Acta Scientiarum Polonorum. Zootechnica
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2007
|
tom 06
|
nr 4
29-35
5

Gurgul's line - inexactness in pedigree of Cukor-Gurgul-5 stallion

58%
Kwiecinska K.
Electronic Journal of Polish Agricultural Universities. Series Animal Husbandry
|
2005
|
tom 08
|
nr 2
The breed of Hucul horses is valued for its strongly consolidated features. In a small closed animal population such as Hucul horses is, the knowledge of inbred level and its constant monitoring are very important. The base of inbreeding coefficient calculation is animal´s pedigree. One of the most important sire lines of hucul horses is the Gurgul´s line. Its first specimen in Poland was Cukor-Gurgul-5 stallion. For years, his mother´s pedigree remained unknown in Poland. This work confirms the existence of missing documents in Czech, and their connection to the said specimen.
6

Analiza depresji wsobnej wybranych cech zyta

51%
Kolasinska I.
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
|
1996
|
tom 200
109-118
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