Table 1.

Overview of the study types included in the results, separate columns for each of the sections: colostrum milking, treatments and storage, and administration procedures.

	Milking methods	Colostrum treatments and storage	Administration procedures	Total
Animal studies	2	24	36	62
Laboratory studies		26		26
Population studies	26	6	18	50
Total	28	56	54	138

Note that the number of total study types for “Colostrum treatments and storage,” 56, does not match the number of articles included in our review. This is because some articles present more than one study type, e.g., a combination of laboratory study type and animal study type.