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This isn't the plant-based meat or regular meat products that you would get off the shelf:

> Meat and plant-based meat analogue diets were prepared as follows: Firstly, all visible fat and connective tissue were removed. Pork or beef muscles were cut into smaller sizes that were visibly similar to plant-based meats. Secondly, the samples were freeze-dried and ground to a powder. All the resulting powders were passed through a 25-mesh sieve. Thirdly, the content of the main components of the freeze-dried meat powder were determined and shown in Table S1. Fourthly, the nutritionally balanced semi-synthetic AIN-93M formula2 was used as reference and the ingredients in it were replaced by meat or meat analogues according to the results of the determination. The protein in the diet is derived entirely from meat or plant-based meat analogues. Finally, the granule and purified type diets were prepared by Trophic Animal Feed High-tech Co., Ltd., China. The ingredient composition and nutritional content of diets were shown in Tables S2 and Tables S3. Except for the higher sodium, fiber, or fat content in plant-based meat analogues that cannot be fully balanced based on the protein content, various other nutrients are present in equal amounts in real meat and plant-based meat analogue diets.