Lamb growth rate on annual and perennial ryegrasses

B.C. Thomson; P.D. Muir

doi:10.33584/jnzg.2009.71.2750

Lamb growth rate on annual and perennial ryegrasses

Authors

B.C. Thomson
P.D. Muir

DOI:

https://doi.org/10.33584/jnzg.2009.71.2750

Abstract

In autumn of 3 consecutive years, tetraploid annual and diploid perennial ryegrasses were sown, and over 6 weeks in each spring the growth rates of 11 month old Romney cross lambs grazing the different ryegrasses were compared. Lamb liveweight gains on annual ryegrasses (364 g/day) were lower (P<0.05) than on perennial ryegrasses (407 g/day). However, because growth rates of annual ryegrasses were greater than for perennials, they supported a higher stocking rate and produced an extra 95 kg of liveweight/ha over the grazing period. Keywords: annual ryegrass, perennial ryegrass, maize supplementation, lamb growth rates

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Published

2009-01-01

Issue

Volume 71, 2009, Waitangi

Section

Articles

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