Genetic and phenotypic trends for female fertility traits derived from service records of South African Holstein cattle

The objective of this study was to estimate breeding values (EBV) and genetic and phenotypic trends for female fertility traits derived from artificial insemination (AI) records. Data were collected from automated milk recording systems: 64464 records from 18 South African (SA) Holstein herds. Breed...

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Vydané v:	South African journal of animal science Ročník 53; číslo 4; s. 598 - 606
Hlavní autori:	Kgari, R.D., Muller, C.J.C., Dzama, K., Makgahlela, M.L.
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	South African Society for Animal Science (SASAS) 01.01.2023
Predmet:	breeding values genetic improvement phenotypic means THRGIBBSF90
ISSN:	0375-1589, 2221-4062
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