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Animal Nutrition in the Tropics—Problems and Solutions^{1, 2,}

University of Missouri, Columbia, Missouri 65201

Abstract

It has been estimated that 20% of the students now enrolled in American colleges of Agriculture may eventually be involved in foreign agriculture; other estimates are as low as S%. Most of those who enter foreign agriculture will be working in the developing nations, usually in the tropics or subtropics. This paper was prepared to: (1) give such students a brief orientation; (2) provide their professors without tropical experience a frame of reference and a challenge for preparing the student for his task, and, perhaps, (3) give some pause to those who have experienced some of the problems of trying to "farm the environment" in the diversity that is the tropics.

In geographical terms, the tropics include the area lying between 23.5° north and south of the equator. This area demarcated by the Tropics of Cancer and Capricorn contains over one-third of the people. In terms of agriculture, the near tropics and subtropics have many features which are common to the tropics, and certain high altitude areas under the tropics actually have many conditions similar to the temperate zones.

¹ Journal Series No. 6101. Approved by the Director, Missouri Agricultural Experiment Station.

² Invited Paper on International Agriculture; Presented at 62nd Annual Meeting American Society of Animal Science, Pennsylvania State University, August, 1970.

³ Department of Animal Husbandry, University of Missouri, Columbia 65201.

⁴ The author wishes to thank the many reviewers, known and unknown, who have contributed to the ideas and their presentation.