Livestock provide a variety of food and material items to people of all cultures, making them the most financially profitable animals in the world. Some animals play multiple roles that bring tangible and intangible benefits to humanity.
Worldwide, farm animals account for about 40% of the total value of global agriculture. In some countries, 50% or more of the population makes their livelihood raising farm animals.
Sheep are raised for their wool, meat, hides, and milk. Goats provide some of the same products but are more resilient in ecologically marginal areas, making them popular with small-scale farmers.
Aquaculture refers to raising freshwater or saltwater fish and other edible aquatic animals in captivity, on so-called 'fish farms' which play a significant role in the global market.
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