Many theories have been formulated to explain the role of grazers such as zooplankton in controlling the excluded grazers from regions of high phytoplankton concentration.
人们提出了许多理论来解释食草动物，如浮游动物，在控制浮游植物高度集中地区的食草动物方面所起的作用。
However, protozoan grazers feed well on phytoplankton in this size range.
但是，在原食草植物吃浮游植物在这个大小范围。
Dorpers are none-selective grazers. 100% Yellow-corn straw can be used by Doper, 82% by Boer Goat, 85% by No-horn Doset.
杜泊羊对低品质玉米秸秆黄贮的采食率为100％，布尔羊为82％，无角道塞特羊为85％。
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