Section 4
Chapter 3,488

Lactation curves for milk traits, live weight and body condition score for heavy and light Holstein-Friesian cows

Lopez Villalobos, N.; Lemus Ramirez, V.; Holmes, C.W.; Garrick, D.J.

Proceedings of the New Zealand Society of Animal Production 61: 217-220


Accession: 003487588

Two genetic lines of Holstein-Friesian cows divergently selected for heavy and light live weight but with similar genetic merit for farm profitability have been developed at Massey University since 1989. The objective of this experimental project was to evaluate differences in production, fertility and feed efficiency between the 2 lines when they are managed on grazed pasture and submitted to a seasonal system of reproduction.

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