Phytoplankton are the foundation of the aquatic food web, the primary producers, feeding everything from microscopic, animal-like zooplankton to multi-ton whales.

浮游植物是水生食物网的基础，作为初级生产者，它们是小到微观浮游动物、大到数吨的鲸鱼的食物。

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Agricultural producers have also warned of sharp hikes next year on meat and milk products, following a doubling from 2009 of the price of animal feed.

农业相关生产商也提出警告下个年度肉类和奶制品价格会大幅提升，因为自2009年以来饲料价格已经涨了2倍。

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Livestock producers, veterinarians, animal nutritionists, agricultural extension agents, creamery managers, and other dairy professionals begin their work with this degree.

畜牧生产者，兽医，动物营养学家，农业推广人员，奶油生产管理人员和其他乳制品的专业人士都是学习此专业的。

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Still, the group this week joined other animal producers in calling for a reduction in corn ethanol production mandates, saying pricing and availability of corn for feed is threatened by the combination of a small corn crop this year and the government mandate, which will use about four of every 10 bushels of corn.

FORBES: Ranchers Beefing Up Sales, But Drought Threatens

The Section 45 credit is also available for energy producers who use geothermal sources, animal waste, municipal waste, biomass and refined coal.

FORBES: Magazine Article

According to Andrew Opie of the British Retail Consortium, UK meat producers already show on the pack where an animal was born and reared.

BBC: EU targets meat origins with new food labelling