1. Internal and external markers to estimate the apparent digestibility of nutrients in horses diets;Almeida,2001
2. Official methods of analysis,2004
3. Bergero D, Peiretti PG 2009. Intake and apparent digestibility of the first cut meadow hay or haylage diets fed to ponies. Proceedings of the 13th Congress of the European Society of Veterinary and Comparative Nutrition, Oristano, Italy, p. 139.
4. Intake and apparent digestibility of perennial ryegrass haylages fed to ponies either at maintenance or at work;Bergero;Livestock Production Science,2002
5. Apparent digestibility of Mediterranean forages determined by total collection of faeces and acid-insoluble ash as internal marker;Bergero;Livestock Production Science,2004