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C. Janis (1976)
THE EVOLUTIONARY STRATEGY OF THE EQUIDAE AND THE ORIGINS OF RUMEN AND CECAL DIGESTIONEvolution, 30
P. Soest (1994)
Nutritional Ecology of the Ruminant
(1987)
Morphological adaptation of the forestomach of small East African goats to seasonal changes of forage quality
P. Hoppe, W. Hoven, W. Engelhardt, R. Prins, A. Lankhorst, M. Gwynne (1983)
Pregastric and caecal fermentation in dikdik (Madoqua kirki) and suni (Nesotragus moschatus)Comparative Biochemistry and Physiology Part A: Physiology, 75
(1986)
An estimation of tooth volume and hypsodonty, indices in ungulate mammals and the correlation of these factors with dietary preference
C. Taylor, E. Weibel (1981)
Design of the mammalian respiratory system. I. Problem and strategy.Respiration physiology, 44 1
(1988)
Seasonal variations of food particle size in moose
(1988)
Morphophysiological evolutionary adaptations of the ruminant digestive system. In: Dobson A (ed) Comparative Aspects of Physiology of Digestion in Ruminants
F. Provenza, J. Malechek (1984)
Diet Selection by Domestic Goats in Relation to Blackbrush Twig ChemistryJournal of Applied Ecology, 21
R. Hofmann (1969)
Zur Topographie und Morphologie des Wiederkäuermagens im Hinblick auf seine Funktion : nach vergleichenden Untersuchungen an Material ostafrikanischer Wildarten
E. Orskov, D. Benzie, R. Kay (1970)
The effects of feeding procedure on closure of the oesophageal groove in young sheepBritish Journal of Nutrition, 24
(1984)
Feeding habits of mouflon (Ovis ammon musimon) and chamois (Rupicapra rupicapra) in relation to the morphophysiological adaptation of their digestive tract
P. Langer (1988)
The mammalian herbivore stomach : comparative anatomy, function, and evolution
(1987)
Adaptive strategies to seasonal changes of forage supply of the small east african goat in comparison to the somali blackhead sheep
(1985)
Niche separation among African ungulates
(1986)
Vergleichend-histologische und morphometrische Untersuchungen am Dickdarm von 30 Wiederk/iuer-Arten (Ruminantia SCOPOLI 1977)
By Engelhardt, D. Dellow, H. Hoeller (1985)
The potential of ruminants for the utilization of fibrous low-quality dietsProceedings of the Nutrition Society, 44
(1985)
Die Zunge der Wiederk~iuer (vergleicheud-ana
(1975)
Structure and function of the large intestine of ruminants
R. Hofmann, D. Stewart (1972)
GRAZER OR BROWSER: A CLASSIFICATION BASED ON THE STOMACH-STRUCTURE AND FEEDING HABITS OF EAST AFRICAN RUMINANTS, 36
(1982)
Zyklische Umbauvorg ~ inge am Verdauungs - apparat des Gamswildes ( Rupicapra rupicapra L . 1758 ) als Aus - druck evolution / irer Anpassung an extreme Lebensrfiume
Susan Cooper, N. Owen‐Smith (1985)
Condensed tannins deter feeding by browsing ruminants in a South African savannaOecologia, 67
R. Hofmann, P. Fennessy, K. Drew (1985)
Digestive physiology of the deer - their morphophysiological specialisation and adaptation.
(1986)
Ruman fermentation and gastro-intestinal absorption: carbohydrates. EUR 10054, Neimann-Sorensen A (ed) EEC Agricultural series, pp
S. Gould (1986)
Evolution and the Triumph of Homology, or Why History Matters, 74
R. Hofmann (1973)
The ruminant stomach. Stomach structure and feeding habits of East African game ruminants.
(1968)
Comparisons of rumen and omasum structure in east african game ruminants in relation to their feeding habits
R. Kay (1987)
Weights of salivary glands in some ruminant animalsJournal of Zoology, 211
(1987)
Interoral food transport and manipulation
(1985)
Symbosis between gut microbes and animals
F. Gilchrist, R. Mackie (1984)
Herbivore nutrition in the subtropics and tropics
(1986)
Differences in the shape of the mandibles of African Bovidae ( Mammalia ) in relation to food composition
R. Kay (1987)
Comparative Studies of Food Propulsion in Ruminants
A review is made of the ruminant digestive system in its morphophysiological variations and adaptations relating to foraging behaviour, digestive physiology, to interactions between plants and ruminants and to geographic and climatic diversity of ruminants' ecological niches. Evidence is provided for evolutionary trends from an extreme selectivity mainly for plant cell contents and dependence upon a fractionated fore- and hindgut fermentation, to an unselective intake of bulk roughage subjected to an efficient plant cell wall fermentation, mainly in the forestomachs. The review is based on detailed comparative morphological studies of all portions of the digestive system of 65 ruminant species from four continents. Their results are related to physiological evidence and to the classification of all extant ruminants into a flexible system of three overlapping morphophysiological feeding types: concentrate selectors (40%), grass and roughage eaters (25%) and intermediate, opportunistic, mixed feeders (35%). Several examples are discussed how ruminants of different feeding types are gaining ecological advantage and it is concluded that ruminants have achieved high levels of digestive efficiency at each evolutionary stage, (including well-documented seasonal adaptations of the digestive system) and that ruminant evolution is still going on. Deductions made from the few domesticated ruminant species may have, in the past, biased scientific evaluation of the free-ranging species' ecology. The main threat to a continuous ruminant evolution and diversity appears to be man's neglect for essential ecological interactions between wild ruminants and their specific habitats, which he alters or destroys.
Oecologia – Springer Journals
Published: Mar 1, 1989
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