damron2 - 2 CHAPTER The Value of Animals to Humanity...

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2 The Value of Animals to Humanity By-products Civilization Companion animal Compost Conservation Draft Essential fatty acids Food and Agricultural Organization of the United Nations (FAO) Health research Hides Meat Metric ton Milk Nutrient density Nutrients Per capita Pest control Pesticides Poultice Power Recombinant DNA Spectator sport Storage of capital Wool Xenotransplantation LEARNING OBJECTIVES After you have studied this chapter, you should be able to: 1. Describe the value of animal products in providing for the world’s food. 2. Explain the current rates of growth or decline of animal products on a worldwide basis. 3. Elaborate on the milk-producing species, state their importance to world milk production, and understand what is happening to world milk production. 4. Describe the value of eggs in feeding the world’s people. 5. Develop a modest understanding of some miscellaneous food uses for the world’s animals. 6. Explain the value of animal products in the human diet. 7. Give a good overview of all the many nonfood uses humans have for the world’s animals. KEY TERMS CHAPTER The Value of Animals to Humanity
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INTRODUCTION What did humans derive from domestication and why do we need domestic animals in today’s world? The answer to both questions is essentially the same, and the answer comes in several parts. Food is the first answer. When humans turned from hunter to farmer by domesticating animals and plants, we created a much more readily available food supply and set the stage for great advancement in culture. What we think of as “civilization” began to occur. Goods and services from the world’s animal populations supply many social, religious, and economic functions in addition to food. How impor- tant each good or service is varies, depending on many factors, including ethnicity of the owners, country, and ecological condition. Nonfood uses for animals are generally more important in developing countries than they are in developed countries. However, some nonfood uses are also extremely important in richer countries. In this chapter, we examine the major contributions of agricultural animals to humanity. THE FOOD USES OF AGRICULTURAL ANIMALS R ED M EAT AND P OULTRY P RODUCTION The nutrients provided by meat are important for human survival. Protein and energy are quantitatively and qualitatively important. However, a substantial share of the vita- mins and minerals in our diet are also contributed by meat. Annual per capita meat sup- ply ranges from over 270 lbs per year in affluent countries to very little in poor countries (Figure 2–1). World meat production has increased steadily for many years at a rate of 3–4% per year. Table 2–1 shows the meat production for most meat-producing species. The pig is the most important meat producer, producing 39% of the world’s meat (Figure 2–2). Chicken is next at 27%, followed by beef with approximately 24% (Figure 2–3). Together, these three sources produce 90% of all meat. Poultry meat
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This note was uploaded on 02/07/2011 for the course ANSC 102 taught by Professor Staff during the Fall '08 term at Purdue.

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damron2 - 2 CHAPTER The Value of Animals to Humanity...

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