Article
Phenotypic evaluation of fertility traits and their association with milk production of Italian Friesian cattle.
Journal of dairy science - 1 Mar 1994
Bagnato A, Oltenacu P A
Abstract excerpt
The effect of environmental factors on first service conception rate, days from calving to first service, weeks from calving to conception, days from first to second service, and number of services per conception and the relationship of production with reproductive performance were estimated using 1.42 million records. The production trait was 305-d mature equivalent milk production. Season and age affected...
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