Grounding the economic selection index for evaluation and selection of dairy cattle
| Autor: | S. Ruban, V. Danshyn, M. Matvieiev, I. Lastovska, O. O. Borshch, O. V. Borshch, V. Bilkevych, M. Fedorchenko, V. Lykhach |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Journal of the Indonesian Tropical Animal Agriculture, Vol 48, Iss 4, Pp 258-268 (2023) |
| Druh dokumentu: | article |
| ISSN: | 2087-8273 2460-6278 |
| DOI: | 10.14710/jitaa.48.4.258-268 |
| Popis: | The aim of the research was to develop a selection index for the evaluation and selection of dairy cattle for increasing milk production and reproductive traits. Materials of the research were data on milk production and reproduction of cows of the Ukrainian Black-and-White dairy breed in commercial farm in Kharkiv region. Studies showed that there was a certain antagonism between milk productivity and reproduction of the Ukrainian Black-and-White dairy cow. The coefficients of phenotypic correlation between milk yield, fat and protein yield and the days open ranged from +0.284 to +0.293. Selection indexes were built, which included protein, fat yield, and days open. The developed selection indexes were characterized by a high relationship with the protein yield (α |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
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