indexing feed

例句：

1. 1. The indexing feed is a crucial part of the feeding process.
   索引式喂养是喂养过程中至关重要的一部分。
2. 2. The indexing feed helps to maintain the health of the animals.
   索引式喂养有助于保持动物的健康。
3. 3. The indexing feed is designed to provide the necessary nutrients for the animals.
   索引式喂养旨在为动物提供必要的营养物质。