The feeder fed new feed to pigs so that they put on fat.

饲养员用新饲料喂猪使它们长胖。

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In another incident, elevated dioxin levels were detected in animal feed in the Netherlands in 2006 and the source was identified as contaminated fat used in the production of the feed.

在另一起事件中，2006年荷兰动物饲料中被发现二恶英含量增加，后来确认源头是生产饲料过程使用了被污染的脂肪。

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Ye eat the fat, and ye clothe you with the wool, ye kill them that are fed: but ye feed not the flock.

你们吃脂油，穿羊毛，宰肥壮的，却不牧养群羊。

youdao

The source of contamination - an 80, 000-kg batch of fat that a Belgium company sold to feed mills supplying European farms - did not only contain dioxin.

CNN: THE GREAT DIOXIN SCARE

The fat content of raw milk varies with cow breed, feed, and stage of lactation among other factors.

FORBES: Why Milk Isn't As "Natural" As You Think