English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/23078
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

Foraging strategies and grazing behaviour as constraints in sheep production systems at northern Spain

AutorMantecón, Ángel R. ; Revesado, P. R.; Iason, G. R.; González, Jesús Salvador ; Carro Travieso, Mª Dolores
Palabras claveSheep
Grazing
Foraging
Strategies
Fecha de publicación1994
EditorButterworth
CitaciónA. Gibon, C. Flamant, (Eds) The study of Livestock Farming Systems in a Research and Development Framework, pp.:106-110 (1994)
ResumenTopographical and climatic constraints mean that most of the upland and mountain areas of Europe are suited only to extensive systems of livestock production. Development of these less favoured regions must proceed in a way which provides a basis for the persistence of farming communities whilst simultaneously taking into account the increasingly important environmental aspects of land use. In mountain areas of Northern Spain the intensity of food selection during summer grazing season (June to October) was studied for the two main breeds of sheep (Churra and Merino). The seasonal variation in food selection is of importance when estimating intake in mountain sheep grazing systems. Seasonal differences were found between sheep breeds, with a significant decline in the proportion of leaf in the diet of the Merino during the dry period. An experiment was carried out with the aim of finding out how grazing behaviour varied in relation to food biomass availability in the presence and absence of an upper constraint of feeding time. For sward height of 3.5 cmtbe number of bouts and the total daily grazing time were lower than on a higher sward height of 5.5 cm. Ewes whose total daily feeding time was restricted experimentally compensated to some extent by taking fewer longer grazing bouts than unrestricted sheep. Both the intensity of food selection and grazing time are a consequence of seasonal quantity and quality variations in food availability, animal adaptation, traditional management imposed to counterac overnight predation and all these aspects must be considered in alternative sheep production systems.
Descripción5 pages, 6 tables.-- Contributed to: Proceedings of the Second International Symposium on Livestock Farming Systems (1992)
URIhttp://hdl.handle.net/10261/23078
ISBN978-9074134194
907413419X
Aparece en las colecciones: (IGM) Libros y partes de libros
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.