The weight of the 7-49 day-old low-density group was significantly higher than that of the medium-density and high-density groups, except for the 7-day age group, all of which were higher than the high-density group, and the difference was significant in the 28th, 35th and 49-day-old groups, and the shin length in the 7-35-day-old low-density group was significantly higher than that in the medium-density group and the high-density group, and the difference between the 42-day-old and 49-day-old group was not significant. Except for the keel length of 35 days old, the rest of the day age is higher than that of the low-density group and the medium and high-density groups; The overall manifestation of chest width was the trend of low density group > medium density group > high density group.
The study suggests that the feeding density had a significant influence on the growth performance of Highland brown shell layer chickens during the brooding stage, and the body weight, tibia length, keel length and chest width all showed an overall downward trend with the increase of feeding density. Combined with economic benefits and growth and development, it is recommended that the feeding density be 20-30 /㎡ in the first 5 weeks, and 10/㎡ in 6-7 weeks.