REVIEW OF RELATED LITERATURE AND STUDIES
Animal feed plays an important part in the food chain and has implications for the composition and quality of the livestock products (milk, meat and eggs) that people consume. When many Americans think of farm animals, they picture cattle munching grass on rolling pastures, chickens pecking on the ground outside of picturesque red barns, and pigs gobbling down food at the trough.
Over the last 50 years, the way food animals are raised and fed has changed dramatically to the detriment of both animals and humans. Many people are surprised to find that most of the food animals in the United States are no longer raised on farms at all. Instead they come from crowded animal factories, also known as large confined animal feeding operations (CAFOs). Beforehand the animal feeds were introduced by James Moore, people used to feed their livestock in a natural and traditional way. Swine, chickens and the like only consumed grasses and left over foods for so many years. But when James introduced his innovation on 1936, the numbers of livestock on farms all over the world increased, which led to a growing demand for animal feeds. In Japan, 9.61 million pigs and 294 million chickens are being raised nowadays. Japanese farmer hit hard by rise in grain and livestock feed prices. Japan imports 75% of its feed stocks from abroad. It is the world’s biggest importer of corn, most of which is fed to animals. It only shows that even outside the country, the demand for animal feeds remains high and will continue to be so as years pass by. Local Literature
Feed is one of the most critical inputs to the swine and poultry industries in the Philippines. It represents roughly 60 percent of the total cost to produce pork, poultry meat and eggs. Because of the critical role of feeds to these industries, feed production or feed milling has evolved into a multi-billion-peso support industry to animal and fish...
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