Development of an udder health index for sire selection based on somatic cell score, udder conformation, and milking speed.

doi:10.3168/jds.S0022-0302(98)75678-4

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Article

Development of an udder health index for sire selection based on somatic cell score, udder conformation, and milking speed.

Journal of dairy science - 1 Apr 1998

Boettcher P J, Dekkers J C, Kolstad B W

Abstract excerpt

Genetic parameters of subjectively scored milking speed and somatic cell score were estimated using REML and a sire model. Approximately 250,000 records were used. Heritabilities were 0.15 for milking speed and 0.14 and 0.16 for lactation mean somatic cell score (SCS) for first and second lactati...

Topics

Animals
Breeding
Cattle
Cell Count
Female
Genotype
Lactation
Male
Mammary Glands, Animal
Mastitis, Bovine
Milk
Time Factors

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