Uniformity: weigh a sample, calculate the coefficient of variation, act
Two flocks have the same average weight of 1,500 g at 28 days. In the first, almost all the chickens weigh between 1,350 and 1,650 g: the buyer takes the whole lot the same day. In the second, a third weigh 1,100 g and another third 1,900 g: the buyer sorts, argues, comes back twice, and the small ones eat for another week. The average hid everything. Uniformity is the figure that tells you whether your birds look alike, and it is one of the most profitable to watch.
12 min read · 5-question quiz at the end
By Abdul Hussein ChoumanFounder of NEXTEKCI · Agnibilékrou hatchery since 2006Lesson reserved for students following the steps
This lesson is part of Level 10 — Technical analysis and management. It opens to registered students who have passed the level 9 exam. Levels 1 to 5 and the tracks remain readable by everyone.
What you will learn
- ✓Organise a sample weighing of 50 to 100 birds that truly represents the flock
- ✓Calculate uniformity at plus or minus 10% and the coefficient of variation, with a worked example
- ✓Place the result against the benchmarks for broilers and layers
- ✓Find the cause of an uneven flock and apply the corrective actions