- 1984-01-01 Since ancient times, chickens, ducks, and geese have served farming communities by gleaning the fields of grain that otherwise would be lost; picking up grain that is dropped by the wayside in threshing, drying, and transportation; making productive use of the scraps from the family table; and,...
- 1985-01-01 The dairy industries in many industrialized countries have developed elaborate facilities in an effort to: (1) save labor, which is plentiful and inexpensive in most developing countries; (2) provide protection for both the cattle and their caretakers from cold in winter; and (3) provide...
- 1990-01-01 Goats are among the smallest domesticated ruminants and have served mankind longer than cattle or sheep. They thrive in arid, semitropical, or mountainous countries. More than 460 million goats in the world produce over 4.5 million tons of milk and 1.2 million tons of meat annually, besides...
- This seed cleaner was developed in Afghanistan to remove round seeds of weeds from wheat grains. The round seeds could not be separated by a sieve because they were the same size as the wheat grains. The cleaner described here takes advantage of the round shape of the weed seeds to separate them...
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- 这也有其他语言版本:
- Português (pt)
- Español (es)
- English (en)
- Français (fr)
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- 这也有其他语言版本:
- Français (fr)
- English (en)
- Español (es)
- Português (pt)
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