The livestock industry has recently suffered from labor shortages due to the decline and aging of the rural population, and it is a trend that changes with the enlargement of the management scale and the commercialization due to dense breeding. Due to this, precise specification management is difficult, and it is difficult to immediately handleability with problems. Therefore, in this study, for the purpose of providing basic data for the production of an automated health and specification management system for each individual, the changes in body weight according to the feed intake of castrated and sow pigs in the experimental pig barn and the efficiency of feed intake were analyzed. The experimental pigs were three female pigs and three castrated pigs of Yorkshire × Duroc two-way crossbred, and body weight and feed intake were measured at 09:00 and 17:00 every day during the experiment period. In order to evaluate the growth rate of individual and each group of castrated and sow pigs, the relationship between changes in feed intake and weight for age and weight change according to feed intake were analyzed. As a result, there was a significant difference between group 1 and group 3 in common between castrated and sow pigs (p<0.05). Through this study, it was possible to confirm the significant change in feed demand according to the growth and presentation of a significant analysis model for individual pig growth.
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