Autor: Czech, B. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Evaluation of the effect of centromeric heterochromatin polymorphism on pig fertility
Autorzy:: Kozubska-Sobocinska, A
Danielak-Czech, B
Slota, E
Rejduch, B
Powiązania:: https://bibliotekanauki.pl/articles/2047265.pdf
Data publikacji:: 1996
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: pig
polymorphism
constitutive heterochromatin
fertility
C-banding
centromeric heterochromatin
litter size
karyotype
Opis:: C-banding identified centromeric heterochromatin polymorphism, most often located in pair no. 16, was a basis for selecting animals for the experiment. The aim of the experiment was to assess the impact of centromeric heterochromatin polymorphism on pig fertility, expressed by litter size. The research included the first two litters obtained from 30 pairs of parents with different genotypes as regards the parameter under study. A statistical analysis of the number of offspring from different mating types showed no significant differences between the experimental groups of animals. The results obtained did not confirm suggested correlation between polymorphism of the centromeric heterochromatin regions and pig fertility, estimated by mean litter size. Thus the polymorphism cannot be regarded as a selection criterion.
Źródło:: Journal of Applied Genetics; 1996, 37, 3; 293-298
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Decrease in pig fertility as a result of reciprocal translocations and associated economic effects on the basis of rcp [7;13][q13;q46]
Autorzy:: Danielak-Czech, B
Kozubska-Sobocinska, A
Slota, E
Rejduch, B
Okularczyk, S
Powiązania:: https://bibliotekanauki.pl/articles/2047231.pdf
Data publikacji:: 1996
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: pig
fertility
simulation account
reciprocal translocation
litter size
karyotype
Opis:: Reciprocal translocations, very frequently identified in pigs, are the cause of fertitlity decrease. The aim of this work was to provide an objective assessment of the real effect of reciprocal translocation (7;13) on the fertility of carriers and associated economic effects. The experiment has shown that fertility, expressed as a mean litter size, decreased by 48% in comparison to that of the control group. On the basis of simulation account, financial losses incurred a translocation - as a result of using carrying boar in a commercial herd were estimated at about 8,000 USD for natural mating and at about 162,000 USD for artificial insemination. The results obtained show the need for introducing a system for cytogenetic control of boars producing small litters into the Polish swine improvement programme.
Źródło:: Journal of Applied Genetics; 1996, 37, 4; 373-384
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Artificial immune system in planning deliveries in a short time
Autorzy:: Mrówczyńska, B.
Król, A.
Czech, P.
Powiązania:: https://bibliotekanauki.pl/articles/200739.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: artificial immune system
genetic algorithm
simulated annealing
open vehicle routing problem
on-time delivery
Taguchi method
Opis:: In the calculations presented in the article, an artificial immune system (AIS) was used to plan the routes of the fleet of delivery vehicles supplying food products to customers waiting for the delivery within a specified, short time, in such a manner so as to avoid delays and minimize the number of delivery vehicles. This type of task is classified as an open vehicle routing problem with time windows (OVRPWT). It comes down to the task of a traveling salesman, which belongs to NP-hard problems. The use of the AIS to solve this problem proved effective. The paper compares the results of AIS with two other varieties of artificial intelligence: genetic algorithms (GA) and simulated annealing (SA). The presented methods are controlled by sets of parameters, which were adjusted using the Taguchi method. Finally, the results were compared, which allowed for the evaluation of all these methods. The results obtained using AIS proved to be the best.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 5; 969-980
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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