Genetic analysis of milk urea nitrogen and lactose and their relationships with other production traits in Canadian Holstein cattle.

doi:10.3168/jds.2006-487

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Article

Genetic analysis of milk urea nitrogen and lactose and their relationships with other production traits in Canadian Holstein cattle.

Journal of dairy science - 1 May 2007

Miglior F, Sewalem A, Jamrozik J, Bohmanova J, Lefebvre D M, Moore R K

Abstract excerpt

The objective of this research was to estimate heritabilities of milk urea nitrogen (MUN) and lactose in the first 3 parities and their genetic relationships with milk, fat, protein, and SCS in Canadian Holsteins. Data were a random sample of complete herds (60,645 test day records of 5,022 cows from 91 herds) extracted from the edited data set, which included 892,039 test-day records of 144,622 Holstein cows...

Topics

Animals
Breeding
Canada
Cattle
Dairying
Environment
Female
Lactation
Lactose
Milk
Nitrogen
Parity
Phenotype
Pregnancy
Time Factors
Urea

Source

Open in PubMed

Identifiers

PMID: 17430951
DOI: 10.3168/jds.2006-487

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