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Effects of time spent on pasture and the characteristics of the concentrate on milk yield, milk composition and body reserves in the Latxa dairy ewe

Published online by Cambridge University Press:  20 November 2017

A. Garcia-Rodriguez  and
L. M. Oregui
A. Garcia-Rodriguez
Affiliation:
NEIKER, A.B. - Granja Modelo de Arkaute, Apartado 46, 01080 Vitoria-Gasteiz, Spain.
L. M. Oregui
Affiliation:
NEIKER, A.B. - Granja Modelo de Arkaute, Apartado 46, 01080 Vitoria-Gasteiz, Spain.
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Extract

In the basque country, in the spring, dairy ewes can spend a limited number of hours between 4 and 8 hours on pasture (Oregui et al., 1997). Besides grazing, ewes receive a supplementation of concentrates and forages in parlour. Therefore the characteristics of this supplementation are very important. In this sense, there is evidence that an increase in rumen undegradable protein could lead to an increase in milk production (Santos et al., 1998). In recent years, it has been shown the potential of tannins to decrease protein degradation in the rumen (Hervas. 2001). However, there is a lack of knowledge concerning the effect of increasing the content of rumen undegradable protein of the concentrate in a production system like the one in the basque country.

Type
Sheep Nutrition
Information
Proceedings of the British Society of Animal Science , Volume 2003 , 2003 , pp. 187
Copyright
Copyright © The British Society of Animal Science 2003

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References

Hervas, G. 2001. Los taninos condensados de quebracho en la nutricion de ovjejas. Efecto sobre la fermentacion en el rumen y la digestibilidad, toxicidad y utilizacion como protectores frente a la degradacion ruminal. Ph.D.Thesis. Universidad de Leon, Leon. Spain Google Scholar
Oregui, L. M., Garro, J., Vicente, M. S. and Bravo, M. V. 1997. Estudio del sistema de alimentación en las razas ovinas Latxa y Carranzana: utilización de los pastos comunales y suplementación en pesebre. Información Técnica Económica Agraria 93: 173–182 Google Scholar
Santos, F. A. P., Santos, J. E. P., Theurer, C. B. and Huber, J. T. 1998. Effects of rumen-undegradable protein on dairy cow performance: a 12-year literature review. Journal of Dairy Science 81: 3182–3213 Google Scholar