Article
A comparison of three strains of Holstein-Friesian cows grazed on pasture: growth, development, and puberty.
Journal of dairy science - 1 Aug 2007
Macdonald K A, McNaughton L R, Verkerk G A, Penno J W, Burton L J, Berry D P, Gore P J S, Lancaster J A S, Holmes C W
Abstract excerpt
With the introduction of a protein milk payment system in New Zealand in 1988, there was an influx of North American (NA) Holstein-Friesian (HF) genetics into New Zealand (NZ) dairy herds, leading to an increase in the average percentage of NA genetics in NZ HF cows--from 2% in 1980 to 38% in 1999. Of interest has been the effect this change has had on farm profitability and on the management required for these...
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