Home Selection

Introduction

The selective goal for the Piemontese breed is to produce light animals at birth, with an high muscular growth potential in order to give an excellent dressing out both at slaughter and in processing. For the female the aim is to get cows with very good calving traits, good fertility and limbs.

Ereditability and genetic correlations

Hereditability (h2), is the trait variability due to genetic effects and is a very important parameter for the genetic selection. Traits with high hereditability can be easy selected while a low hereditability shows that the management sides have more influence than genetic on the differences among the animals.

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Selection plan

The young bulls undergo a pre-selection before getting to the Test Station based on their pedigree index (average value index between father and mother). This way 216 bull-calves are chosen every year to start the performance test.

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The selected traits and their economic importance

The selection concerns three type of traits: production, linked to the meat yield, breeding, linked to the calving and morphology linked to the somatic development and to the cows efficiency.

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The selection indices

The selection index is an output from the sum of the different traits indices. The weight of each trait depends on its genetic correlation with the other traits and on its economic importance. The index sets the rank of the sires proven to AI and the rank of the cows “mothers of sire”.

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Results

The efficacy of the selection is measured through the evolution of the animals performance. If the selection program works the new generations are supposed to be better than the former ones.

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