Case study: a 12-point drop in lay in ten days, write the diagnosis
An entrepreneur from the Abengourou area calls on a Monday: 'My hens went from 92 to 80% in ten days, they have something, they need a medicine.' His technician kept the laying record; the area's veterinarian came by on Saturday; the morning eggs are on the table. Everything is there to do better than guess. This lesson goes back over the ten days, clue by clue, applies the method of lessons 3 and 9, ranks the causes by their weight and their date, writes the diagnosis the technician hands to the entrepreneur, and says what should have been done before. It is the typical exercise of the specialisation exam.
15 min read · 5-question quiz at the end
By Abdul Hussein ChoumanFounder of NEXTEKCI · Agnibilékrou hatchery since 2006This lesson is part of Laying hens, expert level specialisation. It opens to every registered student, from free registration. Levels 1 to 5 and the tracks remain readable by everyone.
An entrepreneur from the Abengourou area calls on a Monday: 'My hens went from 92 to 80% in ten days, they have something, they need a medicine.' His technician kept the laying record; the area's veterinarian came by on Saturday; the morning eggs are on the table. Everything is there to do better than guess. This lesson goes back over the ten days, clue by clue, applies the method of lessons 3 and 9, ranks the causes by their weight and their date, writes the diagnosis the technician hands to the entrepreneur, and says what should have been done before. It is the typical exercise of the specialisation exam.
- ✓Reconstruct the timeline of a drop in lay from the record, the eggs and the observations
- ✓Apply the checklist (water, light, feed, heat, disturbances, health) and rule out what explains nothing
- ✓Rank the causes by their mechanism, their date and their weight, and forecast the recovery
- ✓Write a one-page diagnosis and a dated correction plan, and say what should have been done before
- The situation: what the technician has in front of him
- Dating and linking: the timeline of the clues
- Ranking the causes by their weight
- The written diagnosis: one page, handed over the same day
- What should have been done before
- Going further: the exam and the specialisation certificate
- •A drop is diagnosed in order: date on the moving average, go back up the record, link each figure to an event, check (water, light, feed, heat, disturbances, health), rank by mechanism, date and weight, write prognosis and plan.
- •In this case: timer stuck 6 nights (12 h instead of 16) = about half of the 12 points and 1.5 to 2 lasting points; heat = 3 points; feed without coarse calcium = 2 points of lay and 3 points of cracked; disease ruled out by the veterinarian.
- •A day that shortens by 4 hours is an end-of-season signal: the ovary slows in 2 to 4 days and takes 3 to 6 weeks to restart, without quite returning to the previous level.
- •The diagnosis fits on one page: situation, timeline, ranked causes, quantified prognosis, dated and checkable correction plan, what should have been done before.
- •The specialisation exam awards the 'Laying hens, expert level' certificate, issued privately by NEXTEKCI.