Allometry and ecology of feeding behavior and digestive capacity in herbivores: A review

Zoo Biology

Volumn 15, Issue 5, 1996, Pages 455-479

  Van Soest, Peter J ^a  

^a Cornell University ^*  (United States)

Author keywords

Digestion; Feeding behavior; Herbivores

Indexed keywords

BOVIDAE;

EID: 0040155415     PISSN: 07333188     EISSN: None     Source Type: Journal    
DOI: 10.1002/(SICI)1098-2361(1996)15:5<455::AID-ZOO3>3.0.CO;2-A     Document Type: Review

References (106)

1. Allo, A.A.; Oh, J.H.; Longhurst, W.M.; Connelly, G.E. VFA production in the digestive systems of deer and sheep. JOURNAL OF WILDLIFE MANAGEMENT 37:202-211, 1973.
2. Anderson, J.W. Physiological and metabolic effects of dietary fiber. FEDERATION PROCEEDINGS 44:2902-2905, 1985.
3. Arman, P.; Hopcraft, D. Nutritional studies on East African herbivores. I. Digestibilities of dry matter, crude fibre and crude protein in antelope, cattle and sheep. BRITISH JOURNAL OF NUTRITION 33:255-264, 1975.
4. Bae, D.H. STUDY OF EFFICIENCY OF MASTICATION AND RUMINATION IN RELATION TO AMOUNT OF HAY INTAKE AND BODY SIZE IN CATTLE. Ph.D. thesis. Burlington, University of Vermont, 1978.
5. Bakker, R. THE DINOSAUR HERESIES. Harlow Essex, England, Longman Scientific & Technical, 1986.
6. Banta, C.C.; Warner, R.G.; Robertson, J.B. Protein nutrition of the golden hamster. JOURNAL OF NUTRITION 105:38-45, 1975.
7. Bauchop, T.; Martucci, R.W. Ruminant-like digestion of the Langur monkey. SCIENCE 161: 698-699, 1968.
8. Bjornhag, G. Separation and delay of contents in the rabbit colon. SWEDISH JOURNAL OF AGRICULTURE RESEARCH 2:125-136, 1972.
9. Bodmer, R.E. Ungulate frugivores and the browser-grazer continuum. IOKOS 57:319-325, 1990.
10. Brosh, A.; Choshniak, I.; Tadmor, A.; Shkolnik, A. Physico-chemical conditions in the rumens of Bedouin goats: Effect of drinking, food quality and feeding time. JOURNAL OF THE AGRICULTURE SOCIETY CAMBRIDGE 111:147-152, 1988.
11. Burrows, C.F.; Kronfeld, D.S.; Banta, C.A.; Merritt, A.M. Effects of fiber on digestibility and transit time in dogs. JOURNAL OF NUTRITION 112:1726-1732, 1982.
12. Cincotta, R.P.; Van Soest, P.J.; Robertson, J.B.; Beall, C.M.; Goldstein, M.C. Foraging ecology of livestock on the Tibetan Changtang: A comparison of three adjacent grazing areas. ARCTIC AND ALPINE RESEARCH 23:149-161, 1991.
13. Conklin, N.L.; Dierenfeld, E.S. Digestibility and passage of standard zoo diet fed to greater Asian mouse deer (Tragulus napu). MALAYAN NATURE JOURNAL 48:41-51, 1994.
14. Conklin-Brittain, N.L.; Dierenfeld, E.S.; McLaughlin, K. Small ruminants: Digestive capacity among four species weighing less than 20 kg. ZOO BIOLOGY 15 (in press).
15. Conrad, H.R.; Weiss, W.P.; Odwongo, W.O.; Shockey, W.L. Estimating net energy of lactation from components of cell solubles and cell walls. JOURNAL OF DAIRY SCIENCE 67: 427-436, 1984.
16. Cowan, R.L. Application of fundamental principles of nutrition in feeding captive wild animals. PROCEEDINGS OF THE SECOND ANNUAL DR. SCHOLL CONFERENCE ON THE NUTRITION OF CAPTIVE WILD ANIMALS. M.E. Allen, ed. Lincoln Park Zoo, Chicago, IL, 1982.
17. Deinum, B. Effect of age, leaf number and temperature on cell wall digestibility of maize. P. 29 in CARBOHYDRATE RESEARCH IN PLANTS AND ANIMALS. P.W. van Adrichem, ed. Miscellaneous Papers 12, Landbouwhoge-school Wageningen, The Netherlands, 1976.
18. Deinum, B.; Dirven, J.G.P. Climate, nitrogen and grass. Comparison of yield and chemical composition of some temperate and tropical grass species grown at different temperatures. NETHERLAND JOURNAL OF AGRICULTURE SCIENCE 23:69-82, 1975.
19. Deinum, B.; Dirven, J.G.P. Climate, nitrogen and grass. Comparison of production and chemical composition of Brachiaria ruziziensis and Setaria sphacelata grown at different temperatures. NETHERLAND JOURNAL OF AGRICULTURE SCIENCE 24:67-78, 1976.
20. Deinum, B.; Van Es, A.J.H.; Van Soest, P.J. Climate, nitrogen and grass. 2. The influence of light intensity, temperature and nitrogen on in vivo digestibility of grass and the prediction of these effects from some chemical procedures. NETHERLAND JOURNAL OF AGRICULTURE SCIENCE 16:217-233, 1968.
21. Demment, M.W.; Van Soest, P.J. A nutritional explanation for body-size patterns of ruminant and nonruminant herbivores. AMERICAN NATURALIST 125:641-672, 1985.
22. Devendra, C. The digestive efficiency of goats. WORLD REVIEW OF ANIMAL PRODUCTION 14:9-22, 1978.
23. Dierenfeld, E.S.; Hintz, H.F.; Robertson, J.B.; Van Soest, P.J.; Oftedal, O.T. Utilization of bamboo by the giant panda. JOURNAL OF NUTRITION 112:636-641, 1982.
24. Duke, G.E.; Eccleston, E.; Kirkwood, S.; Louis, C.F.; Bedbury, H.P. Cellulose digestion by domestic turkeys fed low or high fiber diets. JOURNAL OF NUTRITION 114:95-102, 1984.
25. Ehle, F.R.; Warner, R.G. Nutritional implications of the hamster forestomach. JOURNAL OF NUTRITION 108:1047-1053, 1978.
26. Ehle, F.R.; Jeraci, J.L.; Robertson, J.B.; Van Soest, P.J. The influence of dietary fiber on digestibility, rate of passage and gastrointestinal fermentation in pigs. JOURNAL OF ANIMAL SCIENCE 55:1071-1081, 1982.
27. Fahey, G.C., Jr.; Miller, B.L.; Hadfield, H.W. Metabolic parameters affected by feeding various types of fiber to guinea pigs. JOURNAL OF NUTRITION 109:77-83, 1979.
28. Farlow, J.O. Speculations about the diet and digestive physiology of herbivorous dinosaurs. PALEOBIOLOGY 13:60-72, 1987.
29. Fonnesbeck, P.V. Digestion of soluble and fibrous carbohydrate of forage by horses. JOURNAL OF ANIMAL SCIENCE 27:1336-1344, 1968.
30. Foose, T. TROPHIC STRATEGIES OF RUMINANT VERSUS NONRUMINANT UNGULATES. Ph.D. thesis. Chicago, IL, University Chicago, 1982.
31. Giesecke, D.; Van Gylswyck, N.O. A study of feeding types and certain rumen functions in six species of South African wild ruminants. JOURNAL OF AGRICULTURAL SCIENCE 85:75-83, 1975.
32. Grajal, A.; Strahl, S.D.; Parra, R.; Dominguez, M.G.; Neher, A. Foregut fermentation in the hoatzin, a neotropical leaf-eating bird. SCIENCE 245:1236-1238, 1989.
33. Hackenberger, M.K. DIET DIGESTIBILITIES AND INGESTA TRANSIT TIMES OF CAPTIVE ASIAN [ELEPHAS MAXIMUS] AND AFRICAN [LOXODONTA AFRICANA] ELEPHANTS. M.Sc. thesis. Guelph, Ontario, Canada, University of Guelph, 1987
34. Heller, S.N.; Hackler, L.R.; Rivers, J.M.; Van Soest, P.J.; Roe, D.A.; Lewis, B.A.; Robertson, J.B. Dietary fiber: The effect of particle size of wheat bran on colonic function in young adult men. AMERICAN JOURNAL OF CLINICAL NUTRITION 33:1734-1744, 1980.
35. Hintz, H.F.; Argenzio, R.A.; Schryver, H.F. Digestion coefficients, blood glucose levels and molar percentage of volatile acids in intestinal fluid of ponies fed varying forage-grain ratios. JOURNAL OF ANIMAL SCIENCE 33:992-995, 1971.
36. Hintz, H.F.; Schryver, H.F.; Halbert, M. A note on the comparison of digestion by new world camels, sheep and ponies. ANIMAL PRODUCTION 16:303-305, 1973.
37. Hintz, H.F.; Sedgewick, C.J.; Schryver, H.F. Some observations on digestion of a pelleted diet by ruminants and nonruminants. INTERNATIONAL ZOO YEARBOOK 16:54-57, 1976.
38. Hobson, P.N. THE RUMEN MICROBIAL ECOSYSTEM. New York, Elsevier Applied Science Publishers Ltd., 1988.
39. Hofmann, R.R. THE RUMINANT STOMACH: STOMACH STRUCTURE AND FEEDING HABITS OF EAST AFRICAN GAME RUMINANTS. Nairobi, Kenya, East African Literature Bureau, 1973.
40. Hofmann, R.R. Anatomy of the gastrointestinal tract. P. 14-43 in THE RUMINANT ANIMAL. D.C. Church, ed. Englewood Cliffs, NJ, Prentice-Hall, 1988.
41. Hofmann, R.R. Evolutionary steps of ecophysiological adaptation and diversification of ruminants: A comparative view of their digestive system. OECOLOGIA 78:443-457, 1989.
42. Hofmann, R.R.; Nygren, K. Morphophysiological specialization and adaptation of the moose digestive system. ALCES 28(Suppl. 1):91-100, 1992.
43. Hooper, A.P.; Welch, J.G. Chewing efficiency and body size of kid goats. JOURNAL OF DAIRY SCIENCE 66:2551-2556, 1983.
44. Hoover, W.H.; Clarke, S.D. Fiber digestion in the beaver. JOURNAL OF NUTRITION 102:9-15, 1972.
45. Hoppe, P.P. Rumen fermentation and body weight in African ruminants. Pp. 141-150 in PROCEEDINGS, 13TH INTERNATIONAL CONGRESS OF GAME BIOLOGISTS. T.J. Peterle, ed. Washington, DC, Wildlife Society, 1977.
46. Hsu, J.C.; Penner, M.H. Influence of cellulose structure on its digestibility in the rat. JOURNAL OF NUTRITION 119:872-878, 1989.
47. Hume, I.D. Nitrogen and sulphur retention and fibre digestion by euros, red kangaroos and sheep. AUSTRALIAN JOURNAL OF ZOOLOGY 22:13-23, 1974.
48. Hume, I.D. DIGESTIVE PHYSIOLOGY AND NUTRITION OF MARSUPIALS. Monographs on Marsupial Biology. New York: Cambridge University Press, 1982.
49. Hungate, R.E.; Phillips, G.D.; McGregor, A.; Hungate, D.P.; Beuchner, H.K. Microbial fermentation in certain mammals. SCIENCE 130: 1192-1194, 1959.
50. Hungate, R.E.; Mah, R.A.; Simesen, M. Rates of production of individual volatile fatty acids in the rumen of lactating cows. APPLIED MICROBIOLOGY 9:554-561, 1961.
51. Huston, J.E.; Rector, B.S.; Ellis, W.C.; Allen, M.L. Dynamics of digestion in cattle, sheep, goats, and deer. JOURNAL OF ANIMAL SCIENCE 62:208-215, 1986.
52. Janis, C.M. The evolutionary strategy of the Equidae and the origins of rumen and cecal digestion. EVOLUTION 30:757-774, 1976.
53. Janis, C.M.; Ehrhardt, D. Correlation of relative muzzle width and relative incisor width with dietary preference in ungulates. ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY 92: 267-284, 1988.
54. Janis, C.M.; Fortelius, M. On the means whereby mammals achieve increased functional durability of their dentitions, with special reference to limiting factors. BIOLOGICAL REVIEW 63:197-230, 1988.
55. Kass, M.; Van Soest, P.J.; Pond, W.G.; Lewis, B.L.; McDowell, R.E. Utilization of dietary fiber from alfalfa by growing swine. I. Apparent digestibility of diet components in specific segments of the gastrointestinal tract. JOURNAL OF ANIMAL SCIENCE 50:175-197, 1980.
56. Kautz, J.E.; Van Dyne, G.M. Comparative analyses of diets of bison, cattle, sheep, and pronghorn antelope on shortgrass prairie in northeastern Colorado, U.S.A. P. 438-443 in PROCEEDINGS, FIRST INTERNATIONAL RANGELAND CONGRESS. D.N. Hyder, ed. Denver, CO, Society of Range Management, 1978.
57. Keys, J.E., Jr.; Van Soest, P.J. Digestibility of forages by the meadow vole (Microtus pennsylvanicus). JOURNAL OF DAIRY SCIENCE 53: 1502-1508, 1970.
58. Keys, J.E., Jr.; Van Soest, P.J.; Young, E.P. Comparative study of the digestibility of forage cellulose and hemicellulose in ruminants and nonruminants. JOURNAL OF ANIMAL SCIENCE 29:11-15, 1969.
59. Kuan, K.K.; Stanogias, G.; Dunkin, A.C. The effect of proportion of cell-wall material from lucerne leaf meal on apparent digestibility, rate of passage and gut characteristics in pigs. ANIMAL PRODUCTION 36:201-209, 1983.
60. Langer, P. Evolutionary patterns of perissodactyla and artiodactyla (Mammalia) with different types of digestion. ZEITSCHRIFT FÜR ZOOLOGISCHE SYSTEMATIK UND EVOLUTIONS-FORSCHUNG 25:212-236, 1987.
61. Langer, P. THE MAMMALIAN HERBIVORE STOMACH: COMPARATIVE ANATOMY FUNCTION AND EVOLUTION. New York, G. Fischer, 1988.
62. Maloiy, G.M.O.; Kay, R.N.B. A comparison of digestion in red deer and sheep under controlled conditions. QUARTERLY JOURNAL OF EXPERIMENTAL PHYSIOLOGY 56:257-266, 1971.
63. McBurney, M.L; Van Soest, P.J.; Chase, L.E. Cation exchange capacity of dietary fibers. JOURNAL OF SCIENCE AND FOOD AGRICULTURE 34:910-916, 1983.
64. McNab, B.K. Food habits, energetics, and the population biology of mammals. AMERICAN NATURALIST 116:106-124, 1980.
65. McNeil, N.I.; Cummings, J.H.; James, W.P.T. Short chain fatty acid absorption by the human large intestine. GUT 19:819-824, 1978.
66. Milton, K.; Demment, M.W. Digestion and passage kinetics of chimpanzees fed high and low fiber diets and comparison with human data. JOURNAL OF NUTRITION 118:1082-1088, 1988.
67. Milton, K.; Van Soest, P.J.; Robertson, J.B. Digestive efficiencies of wild howler monkeys. PHYSIOLOGICAL ZOOLOGY 53:402-409, 1980.
68. Moir, R.J. Ruminant digestion and evolution. Pp. 2673-2693 in HANDBOOK OF PHYSIOLOGY, SECTION G: ALIMENTARY CANAL. VOL V. BILE DIGESTION, RUMINAL PHYSIOLOGY. C.F. Code, ed. Washington, DC, American Physiological Society, 1968.
69. Mowat, D.N.; Fulkerson, R.S.; Tossell, W.E.; Winch, J.E. The in vitro digestibility and protein content of leaf and stem portions of forages. CANADIAN JOURNAL OF PLANT SCIENCE 45: 321-331, 1965.
70. Nygren, K.; Hofmann, R.R. Seasonal variations of food particle size in moose. ALCES 26:44-50, 1990.
71. Nyman, M.; Schweitzer, T.F.; Tyren, S.; Reimann, S.; Asp, N.-G. Fermentation of vegetable fiber in the digestive tract of rats and effects of fecal bulking and bile acid excretion. JOURNAL OF NUTRITION 120:459-466, 1990.
72. Olubajo, F.O.; Van Soest, P.J.; Oyenuga, V.A. Comparison and digestibility of four tropical grasses grown in Nigeria. JOURNAL OF ANIMAL SCIENCE 38:149-153, 1974.
73. Osbourn, D.F.; Terry, R.A.; Outen, G.E.; Cammell, S.B. The significance of a determination of cell walls as the rational basis for the nutritive evaluation of forages. PROCEEDINGS, XII INTERNATIONAL GRASSLAND CONGRESS 3:374-380, 1974.
74. Parra, R. Comparison of foregut and hindgut fermentation in herbivores. P. 205-229 in THE ECOLOGY OF ARBOREAL FOLIVORES. G.G. Montgomery, ed. Washington, DC, Smithsonian Institution Press, 1978.
75. Peters, R.H. THE ECOLOGICAL IMPLICATIONS OF BODY SIZE. Cambridge, England, Cambridge University Press, 1986.
76. Prins, R.A.; Rooymand, T.P.; Veldhuizen, M.; Domhof, M.A.; Cline-Theil, W. Extent of plant cell wall digestion in several species of wild ruminants kept in the zoo. DER ZOOLOGISCHE GARTEN 53:393-403, 1983.
77. Reid, R.L.; Jung, G.A.; Thayne, W.V. Relationships between nutritive quality and fiber components of cool season and warm season forages: A retrospective study. JOURNAL OF ANIMAL SCIENCE 66:1275-1291, 1988.
78. Robertson, J.A.; Murison, S.D.; Chesson, A. Estimation of the potential digestibility and rate of degradation of water-soluble dietary fiber in the pig cecum with a modified nylon bag technique. JOURNAL OF NUTRITION 117:1402-1409, 1987.
79. Sands, M.W. ROLE OF LIVESTOCK ON SMALLHOLDER FARMS IN WESTERN KENYA: PROSPECTS FOR A DUAL PURPOSE GOAT. Ph.D. thesis. Ithaca, NY, Cornell University, 1982.
80. Schaller, G.B.; Jinchu, H.; Wenshi, P.; Jing, Z. THE GIANT PANDAS OF WOLONG. Chicago, University of Chicago Press, 1985.
81. Southgate, D.A.T. Determination of carbohydrates in foods. II. Unavailable carbohydrates. JOURNAL OF SCIENCE AND FOOD AGRICULTURE 20:331-335, 1969.
82. Southgate, D.A.T. DETERMINATION OF FOOD CARBOHYDRATES. London, Applied Science Publication, 1976a.
83. Southgate, D.A.T. The chemistry of dietary fiber. Pp. 31-36 in FIBER AND HUMAN NUTRITION. G. Spiller; R.J. Amen, eds. New York, Plenum Press, 1976b.
84. Stevens, C.E. COMPARATIVE PHYSIOLOGY OF THE VERTEBRATE DIGESTIVE SYSTEM. New York, Cambridge University Press, 1988.
85. Strobel, H.J., Russell, J.B. Effect of pH and energy spilling on bacterial protein synthesis by carbohydrate-limited cultures of mixed rumen bacteria. JOURNAL OF DAIRY SCIENCE 69: 2941-2947, 1986.
86. Swart, D.; Mackie, R.I.; Hayes, J.P. Influence of live mass, rate of passage and site of digestion on energy metabolism and fibre digestion in the ostrich (Struthio camelus var. domesticus). SOUTH AFRICAN JOURNAL OF ANIMAL SCIENCE 23:119-126, 1993a.
87. Swart, D.; Mackie, R.I.; Hayes, J.P. Fermentative digestion in the ostrich (Struthio camelus var. domesticus), a large avian species which utilizes cellulose. SOUTH AFRICAN JOURNAL OF ANIMAL SCIENCE 23:127-134, 1993b.
88. Tessema, S. NUTRITIONAL VALUE OF SOME TROPICAL GRASS SPECIES COMPARED TO SOME TEMPERATE GRASS SPECIES. Ph.D. thesis. Ithaca, NY, Cornell University, 1972.
89. Theodorou, M.K.; Williams, B.A.; Dhanoa, M.S.; McAllan, A.B.; France, J. A simple gas production method using a pressure transducer to determine the fermentation kinetics of ruminant feeds. ANIMAL FEED SCIENCE AND TECHNOLOGY 48:185-197, 1994.
90. Uden, P. COMPARATIVE STUDIES ON RATE OF PASSAGE, PARTICLE SIZE AND RATE OF DIGESTION IN RUMINANTS, EQUINES, RABBITS AND MAN. Ph.D. thesis. Ithaca, NY, Cornell University, 1978.
91. Uden, P.; Van Soest, P.J. Comparative digestion of timothy (Phleum pratense) fibre by ruminants, equines and rabbits. BRITISH JOURNAL OF NUTRITION 47:267-272, 1982a.
92. Uden, P.; Van Soest, P.J. The determination of digesta particle size in some herbivores. ANIMAL FEED SCIENCE AND TECHNOLOGY 7:35-44, 1982b.
93. Uden, P.; Rounsaville, T.R.; Wiggans, G.R.; Van Soest, P.J. The measurement of liquid and solid digesta retention in ruminants, equines and rabbits given timothy (Phleum pratense) hay. BRITISH JOURNAL OF NUTRITION 48:329-339, 1982.
94. Van Soest, P.J. Symposium on factors influencing the voluntary intake of herbage by ruminants: Voluntary intake in relation to chemical composition and digestibilily. JOURNAL OF ANIMAL SCIENCE 24:834-843, 1965.
95. Van Soest, P.J. Development of a comprehensive system of feed analyses and its application to forages. JOURNAL OF ANIMAL SCIENCE 26: 119-128, 1967.
96. Van Soest, P.J. A comparison of grazing and browsing ruminants in the use of feed resources. Pp. 67-79 in INCREASING SMALL RUMINANT PRODUCTIVITY IN SEMI-ARID AREAS. E.F. Thomson; F.S. Thomson, eds. Allepo, Syria, ICARDA 1988.
97. Van Soest, P.J. NUTRITIONAL ECOLOGY OF THE RUMINANT, 2nd ed. Ithaca, NY, Comstock, Cornell University Press, 1994.
98. Van Soest, P.J.; Mertens, D.R.; Deinum, B. Preharvest factors influencing quality of conserved forage. JOURNAL OF ANIMAL SCIENCE 47: 712-720, 1978.
99. Van Soest, P.J.; Jeraci, J.L.; Foose, T.; Wrick, K.; Ehle, F. Comparative fermentation of fibre in man and other animals. Pp. 75-80 in FIBRE IN HUMAN AND ANIMAL NUTRITION. G. Wallace; L. Bell, eds. Palmerston North, New Zealand, International Symposium on Dietary Fibre, Massey University, Bulletin 20, 1982.
100. Van Soest, P.J.; McCammon-Feldman, B.; Cannas, A. The feeding and nutrition of small ruminants: Application of the Cornell discount system to the feeding of dairy goats and sheep. Pp. 95-104 in PROCEEDINGS, CORNELL NUTRITION CONFERENCE FOR FEED MANUFACTURERS. Ithaca, NY, Cornell University, 1994.
101. Van Soest, P.J.; Dierenfeld, E.S.; Conklin, N.L. Digestive strategies and limitations of ruminants. Pp. 579-597 in RUMINANT PHYSIOLOGY: DIGESTION, METABOLISM, GROWTH AND REPRODUCTION. Proc. VIII International Symposium on Ruminant Physiology. Wolfgang v. Engelhardt, ed. Ferdinand Enke Verlag, Berlin, New York, 1995.
102. Varel, V.H.; Jung, H.G.; Pond, W.G. Effects of dietary fiber of young adult genetically lean, obese and contemporary pigs: Rate of passage, digestibility and microbiological data. JOURNAL OF ANIMAL SCIENCE 66:707-712, 1988.
103. Visek, W.J.; Robertson, J.B. Dried brewer's grains in dog diets. Pp. 40-49 in PROCEEDINGS, CORNELL NUTRITION CONFERENCE FOR FEED MANUFACTURERS. Ithaca, NY, Cornell University, 1973.
104. Weiss, W.P.; Conrad, H.R.; St. Pierre, N.R. A theoretically-based model for predicting total digestible nutrient values of forages and concentrates. ANIMAL FEED SCIENCE AND TECHNOLOGY 39:95-110, 1992.
105. Welch, J.G. Rumination, particle size and passage from the rumen. JOURNAL OF ANIMAL SCIENCE 54:885-894, 1982.
106. Wilson, J.R. Environmental and nutritional factors affecting herbage quality. Pp. 111-131 in NUTRITIONAL LIMITS TO ANIMAL PRODUCTION FROM PASTURES. Proceedings, International Symposium, St. Lucia, Queensland, Australia. J.B. Hacker, ed. UK, Commonwealth Agricultural Bureaux, Cambridge, 1981.