Journal article

Changes in nutritive characteristics associated with plant height, and nutrient selection by dairy cows grazing four perennial pasture grasses

BR Cullen, D Bullen, C Hutcheson, JL Jacobs, MH Deighton

ANIMAL PRODUCTION SCIENCE | CSIRO PUBLISHING | Published : 2017

Abstract

Previous research has documented nutritive characteristics of perennial ryegrass-based pastures and subsequent nutrient-selection differentials when dairy cows graze such pastures, but there has been little comparable research on alternative pasture grasses. The aim of the present study was to compare the pre-grazing nutritive characteristics of four perennial grasses, how nutrients vary with plant height, and selection differentials achieved by dairy cows grazing these grasses in late winter and late spring. The study utilised an established field experiment, with four replicates of monoculture swards of perennial ryegrass (Lolium perenne L.), tall fescue (Festuca arundinacea Schreb.), cock..

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Grants

Funding Acknowledgements

This research was funded by Dairy Australia Limited and The State of Victoria through its Department of Economic Development, Jobs, Transport and Resources (Agriculture Victoria). We acknowledge the technical staff at Agriculture Victoria, Ellinbank Centre, for maintaining the experimental site and assistance with sample preparation.