This session will include the second of two Aberystwyth University Research presentations.

Different pasture types offer varying opportunities for selective feeding by livestock. Agronomically improved, sown swards generally consist of a comparatively limited range of plant species whereas permanent grassland and rough grazing are characterised by a more diverse mixture of plants with a broader nutritional range. Body size, gut type (foregut vs hindgut fermentation), physiological status, metabolic status and environmental conditions all influence the nutrient requirements of a given animal and related diet selection. Grazing choices and behaviours also change in response to fluctuations in the availability of preferred food items and thus may vary across the growing season. By understanding and exploiting plant/animal interactions it is possible to improve the productive and environmental sustainability of upland livestock systems.

Key Learning Outcomes:

• Understand there are three core grassland types in the UK and recognise their key features.
• Identify ways in which grazing can deliver environmental benefits.
• Understand the factors influencing diet selection by different grazing species.
• Identify strategies to improve pasture use efficiency.