Estimation of genetic parameters for milk yield using a random regression test-day model in first parity dairy cows under pasture-based systems of Los Ríos region in Chile

Estimation of genetic parameters for milk yield using a random regression test-day model in first parity dairy cows under pasture-based systems of Los Ríos region in Chile

Abstract In dairy cattle, genetic selection for milk yield was generally based on 305 days lactation records that were calculated from available monthly test-day milk yield records. A test-day milk yield record, multiplied by the number of days between the current and following test-day, was the mon...

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Autores principales: Uribe,Héctor, Lembeye,Felipe
Lenguaje:English
Publicado: Universidad Austral de Chile. Facultad de Ciencias Veterinarias 2020
Materias:
milk
test day
random regression
genetic parameters
Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-81322020000300103
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