Free Access
Ann. Zootech.
Volume 49, Number 5, September-October 2000
Page(s) 391 - 398


Amrane R., Michalet-Doreau B., Effect of maturity stage of Italian rye grass and lucerne on ruminal nitrogen degradability, Ann. Zootech. 42 (1993) 31-37.
AOAC, Official Methods of Analysis, 14th ed., Association of Official Analytical Chemists, Arlington, VA, 1984.
Caballero R., An experts' survey on the role of forage legumens in arable cropping systems of the Mediterranean area, J. Sust. Agric. 3 (1993) 133-154.
Caballero R., Castile-La Mancha: a once traditional and integrated cereal-sheep farming system under change, Amer. J. Alt. Agric. 14 (1999) 188-192.
Caballero R., Goicoechea E.L., Hernainz P.J., Forage yields and quality of common vetch and oat sown at varying seeding ratios and seeding rates of vetch, Field Crops Res. 41 (1995) 135-140.
Dhanoa M.S., Siddons R.C., France J., Gale D.L., A multicompartimental model to describe marker excretion patterns in ruminants, Br. J. Nutr. 53 (1985) 663-671.
González J., Rodríguez C.A., Andrés S.G., Alvir M.R., Rumen degradability and microbial contamination of fish meal and meat meal measured by the in situ technique, Anim. Feed Sci. Technol. 73 (1998) 71-84.
Grenet E., Demarquilly C., Rappels sur la digestion des fourrages dans le rumen (parois) et ses conséquences, in: Demarquilly C. (Ed.), Les Fourrages Secs : Récolte, Traitement, Utilisation, INRA, Paris, 1987, pp. 141-162.
Haj-Ayed M., González J., Caballero R., Alvir M.R., Nutritive value of on farm vetch-oat hays fed to sheep. I. Voluntary Intake and nutrient digestibility, Ann. Zootech. 49 (2000) 381-389.
Nocek J.E., Grant A.L., Characterization of in situ nitrogen and fiber digestion and bacterial nitrogen contamination of hay crop forages preserved at different dry matter percentages, J. Anim. Sci. 64 (1987) 552-564.
Ørskov E.R., McDonald I., The estimation of protein degradability in the rumen by incubation measurements weighed by rate of passage, J. Agric. Sci. Camb. 92 (1979) 499-503.
Rodríguez C.A., Estudio de la colonización microbiana de los alimentos en el rumen. Implicaciones sobre la estimación de la degradabilidad ruminal de las materias nitrogenadas mediante técnicas in situ, Ph.D. thesis, Universidad Politécnica de Madrid, Spain, 1996.
Rodríguez C.A., González J., Alvir M.R., Cajarville C., Underestimation of in situ effective degradability of N due to microbial contamination, in: VIIIth International Symposium on Protein Metabolism and Nutrition, Aberdeen, United Kingdon, 1999, p. 67.
Rubio J., Influencia de la relación veza avena sobre la utilización ruminal de estos henos en corderos, M.S. thesis, Instituto Agronómico Mediterráneo, Zaragoza, Spain, 1994.
Statistical Analysis Systems, SAS/STAT User's Guide Statistical Analysis Systems Institute Inc., North Carolina, 1990.
Udén P., Colucci P.E., Van Soest P.J., Investigation of chromium, cerium and cobalt as markers in digesta. Rate of passages studies, J. Sci. Food Agric. 31 (1980) 625-632.


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