Animal evaluation of Aries HD perennial ryegrass selected for high digestibility

Autor:	S. J. Bluett, John G. Hodgson, T. N. Barry, Peter D. Kemp
Rok vydání:	1997
Předmět:	Stocking rate Animal science Perennial plant Grazing General Medicine Cultivar Biology biology.organism_classification Lolium perenne
Zdroj:	Proceedings of the New Zealand Grassland Association. :245-249
ISSN:	1179-4577 0369-3902
DOI:	10.33584/jnzg.1997.59.2244
Popis:	Aries HD perennial ryegrass (Lolium perenne L.) has been selected for increased digestibility in summer and early autumn. It is claimed to be the first commercial perennial ryegrass selected specifically for improved digestibility. The relative performance of weaned Romney lambs over summer was compared using Yatsyn 1 perennial ryegrass as a control cultivar. There were 3 replicates of each cultivar of 0.33 ha initially stocked with 8 lambs/plot (24 lambs/ha). Swards were continuously stocked with lambs with a variable stocking rate to maintain a mean sward surface height of 6 cm. Lambs grazing Aries HD plots consistently achieved higher liveweight gains over the experiment. Liveweight gain was higher on Aries HD than Yatsyn 1 during summer dry conditions 24/1/96 to 4/3/96 (50 vs. 31 ± 7.8 g/ day, P
Databáze:	OpenAIRE
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