21/07/2026
When pullets are young, a feeding order forms fast. Bigger birds eat first. Smaller birds wait.
By the time rearing ends, the weight gap between them is already set. Those lighter birds carry that disadvantage all the way into lay.
Flocks with high uniformity reach peak egg production earlier and hit higher peak levels than non-uniform flocks (Petitte et al., 1981; Abbas et al., 2010). The birds that lost ground at the feeder are the ones pulling that number down.
Sorting by weight breaks this cycle early. Van Emous et al. (2024) found that separating pullets into weight groups during rearing reduces feeding competition and leads to more consistent development. Within sorted groups, uniformity can exceed 90% right after grading.
The BAT1 Sorting Machine handles this from start to finish. Working with the BAT1 manual scale, it weighs each bird and sends it to the right pen across three weight groups plus a super-light category. One person can run the whole operation.
Accurate weight data records automatically and controls the sorting machine to remove the errors that make manual sorting unreliable.
The gap starts small. Sorting early is what keeps it from growing. 💡