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Effect of defoliation intensity of barley when grazed as green forage by sheep on grain production at harvest

Published online by Cambridge University Press:  23 November 2017

A. de Vega ,
G. Olmos ,
A. Keli  and
J. A. Guada
A. de Vega*
Affiliation:
Departamento de Producción Animal y Ciencia de los Alimentos, Universidad de Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain
G. Olmos
Affiliation:
Departamento de Producción Animal y Ciencia de los Alimentos, Universidad de Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain
A. Keli
Affiliation:
Departamento de Producción Animal y Ciencia de los Alimentos, Universidad de Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain
J. A. Guada
Affiliation:
Departamento de Producción Animal y Ciencia de los Alimentos, Universidad de Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain
*
Email: [email protected]
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Extract

Grazing of barley as green forage is a common practice in the Mediterranean area due to its active growth along autumn and winter, and its ability to recover after a mild grazing (Bonachela et al., 1995). However, grain production at harvest might be affected depending on the intensity of defoliation suffered by the plant (Yau, 2003). Those studies were carried out mainly by hand clipping or allowing only a few hours of grazing per day. Hence, the objective of this experiment was to establish the relationship between grazing intensity and grain production at harvest when animals are kept in the paddocks for the whole day. Moreover, the ability of barley height and/or residual biomass after grazing (kg dry matter/ha) to predict final grain production was also tested.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2005 , 2005 , pp. 151
Copyright
Copyright © The British Society of Animal Science 2005

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References

Bonachela, S., Orgaz, F. and Fereres, E. 1995. Winter cereals grown for grain and for the dual purpose of forage plus grain. Field Crops Research 44: 1–11.Google Scholar
Yau, S. K. 2003. Yields of early planted barley after clipping or grazing in a semiarid area. Agronomy Journal 95: 281–287.Google Scholar