###### Abstract  
The feeding behavior of poultry at a young age is very likely to determine the final growth of the chicken, and can also reflect the feeding status and the health status. It is also of great significance for breeding. This paper describes the development and testing of a real-time automated system and a single passage for monitoring the individual feed intake and body weight of poultry. This system integrates an automatic feeding mechanism, an RFID reading module, a weight scale, a feed scale, and a drop weighting scale. The system uses analog circuits and digital filtering to improve the weighing accuracy, and directly measures the amount of feed falling to the ground using a high-precision weighing scale. Through the sequential opening and closing of a sliding door, group-housed chickens are separated so that the young ones are fed individually. As a result of the experiment, we learned that a young chicken grows at a rate of about 8.88 g/day, and the food conversion rate (FCR) is about 4.4, which proves that this system matches the single passage and can accurately monitor the body weight change and feeding behavior of young chickens. analog filter; body weight; young chickens; feed intake; dynamic weighing +
Footnote †: journal: Applied sciences  
weight [16; 23]. However, it is difficult for perching scales to determine individual feed intake and identity. With age, the poultry's perching behavior will weaken, and the use, as well as the effect, will decrease. Some scholars have developed an automatic feeding and weighing system (AFWS) that measures the body weight of poultry during feeding and identifies poultry through radio frequency identification (RFID) [24; 25; 26; 27]. As the chicken is fed, since it moves on the scale, the signal obtained from the load cell is highly oscillatory, never reaching a steady state equivalent to the static weight of the item, so this is called dynamic weighing. Dynamic weighing can pose difficulties for accurate measurement [28; 29; 30]. [PERSON] used an AFWS to study the relationship between feeding behavior and performance traits in slow-growing yellow broilers, pointing out that the experimental subjects were too small for there to be accurate measurements, so AFWS was used only to provide and record feed consumption during the experiment [27]. The AFWS was also used only to provide and record feed consumption when [PERSON] performed a feeding behavior analysis of male and female mule ducks [24]. [PERSON] described a real-time monitoring system for the individual feed intake and body weight of a group of turkeys; the feeding inlet size of the system could be adjusted to suit the size of the turkeys [26]. As mentioned above, all of the systems rely on space restrictions to allow a single chicken to eat at a time, and regard the amount of feed dropped to the ground as having little effect on feed intake. However, due to the small feed intake of young chickens, the dropped amount has a great impact on the feed intake. Moreover, because young chickens have more serious competition behavior than during other growth stages, many young chickens are often crowded in the feeder, resulting in invalid feeding data. The dynamic weighing system used to measure young chickens requires higher accuracy. In conclusion, the existing automatic feeding and weighing system is not suitable for young birds. However, the feeding behavior of poultry at a young age is very important, as it is very likely to determine the final growth of the poultry [31; 32]. However, there is little information in the literature about automatically monitoring the feeding of young chickens. In this research, a novel method is investigated in which a passage allows a single chicken to eat. Moreover, we improve the dynamic weighing accuracy and increased drop weight scales. We demonstrate automatic tracking of body weight change and feeding change for young chickens for the first time.