Ráðunautafundur - 15.02.1989, Page 48
-40-
Maynard, L. A. & J. K. Loosli, 1969. Animal Nutrition. McGraw-Hill, Inc. N. Y. 613.
Nedkvitne, J. J. & T. H. Garmo, 1986. Conifer woodland as summer grazing for
sheep. í Grazing Research at Northern Lalitude (ritstj. Ó. Guðmundsson): 121-128.
Osuji, P. O., 1974. The physiology of eating and the energy expenditure of the
ruminant at pasture. J. Range Manage. 27: 437-444.
Penning, P. D., 1986. Some effect of sward conditions on grazing behaviour and
intake by sheep. í Grazing Research at Norhern Latitudes (ritstj. Ó. Guðmundsson):
219-226.
Provenza, F. D. & D. F. Balph, 1987. Diet learning by domestic ruminants: Theory,
evidence, and practical implications. App. Anim. Behav. Sci. 18: 211-232.
Rhoades, D. F., 1979. Evolution of plant chemical defense against herbivores. í
Herbivores: Their Interaction with Secondary Plant Metabolites. Academic Press.
N.Y.: 3-54.
Rhoades, D. F., 1985. Offensive-defensive interactions between herbivores and plants:
Their relevance in herbivore population dynamics and ecological theory. Amer. Nat.
125: 205-238.
Robbins, C. T., T. A. Hanley., A. E. Hagerman., O. Hjeljord., D. L. Baker., C. C.
Schwartz & W. W. Mantz, 1987. The role of soluble phenolics in defending plants
against ruminants: Reduction in protein availability due to tannins. Ecology 68: 98-
107.
Squibb, R. C., F. D. Provenza & D. F. Balph, 1987. Effect of age of exposure to
Cercocarpus montanus on feeding response of sheep. Abstracts of 40th Annual
Meeting, Society of Range Management. Boise, Idaho.
Syrjala-Qvist, L., 1986. Improvement of natural pasture utilization by sheep. í
Grazing Research at Northern Latitudes (ritstj. Ó. Guðmundsson): 157-166.
Vallentine, J. F., 1971. Range Developement and Improvements. B. Y. U. Press, Provo
UT: 516 bls.
Van Soest, P. J., 1982. Nutritional Ecology of the Ruminant. O & B Books Inc.,
Oregon: 374.
Warren, L. E., D. N. Ueckert & J. M. Shelton, 1984. Comparative diets of
Rambouillet, Barbado and Karakul sheep and Spanish and Angora goats. J. Range
Manage. 37: 172-180.