An Example for the 'Transit-Heterosis' in the Non-Return Rate of Upgraded Dairy Genotypes
Autor: | Zsolt Nemes, Radica Đedović, Vitomir Vidović, Ferenc Eszes, András Gáspárdy |
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Jazyk: | angličtina |
Rok vydání: | 2023 |
Předmět: | |
Zdroj: | Scientific Papers Animal Science and Biotechnologies, Vol 45, Iss 1, Pp 215-215 (2023) |
Druh dokumentu: | article |
ISSN: | 1841-9364 2344-4576 |
Popis: | The research aim of the authors was to evaluate the success of the heterosis manifested in the non-return rate regarding an upgrading breeding system in Serbia. The data base contains altogether 27,241 records of the initial purebred Simmental and Holstein-Friesian cows as well as of the six intermediate Holstein-Frisian crossed genotypes, from the last four decades (1971-2008). In the non-return rate calculated by pp day 70 and 210 the Simmentals, together with the F1-R3 genotypes, regularly reached higher values than the purebred Holsteins, together with the R4-R5 genotypes, to a significant degree (p |
Databáze: | Directory of Open Access Journals |
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