engleski

Genetic parameters for milk traits using fixed regression models for Istrian sheep in Croatia

The objective of the study was to estimate genetic parameters for daily milk, fat and protein yield and fat and protein content using test-day records of the Istrian sheep in Croatia. Fixed class effects in the model were: parity, litter size, lambing season and flock. Days in milk and age at lambing were treated as covariates. Direct additive genetic effect, flock-test-day and permanent-environmental effects were treated as random. Results provide genetic parameters for the application of genetic evaluation for milk traits evaluation of the Istrian sheep in Croatia.

fixed regression models ; milk traits ; Istrian sheep

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