Lohmann Hatchery Guide

32 LOHMANN TIERZUCHT › MANAGEMENT GUIDE 32 › › Improper storage: follow recom- mended egg storage and gathering recommendations. › › Improper incubation temperatures: check calibration and accuracy of incu- bator set-point; follow recommended temperature settings. › › Improper incubation temperature: follow recommended incubation, not too warm and not too cold. › › Improper eggs turning: control turn- ing functions for eggs. This is especially important in the first 12 days of the pro- cess. › › Improper ventilation: increase ventila- tion and control carbon dioxide (CO2) value; if location is high above sea level then add oxygen. › › Improper breeder nutrition: feed breeders a diet with balanced nutrient levels. › › Improper disinfections: follow disin- fections recommendations and dosage and time recommendations. › › Inherited low hatchability, poultry disease: check genetic potential; test for diseases in flocks, make use of medi- cal care; check health; investigate fac- tors under veterinarian action. › › Improper breeder nutrition: feed breeders a diet with balanced nutrient levels. › › Micro cracks and bacteria contami- nation: handle eggs gently and check eggshell quality of transport eggs, EARLY DEAD BLOOD RING, 3 – 6 DAYS Medium dead mortality, 7 – 12 days: › › Bacteria contamination: handle eggs gently and check eggshell quality of transport eggs; check cleanness of nests and conditions of the farm floor; make sure the operator has clean hands; check the share of new males; look out for floor and dirty eggs; be careful of improper or accidental showers of eggs; look out for the sweating of old eggs in storage; be careful of changes of new males; pay attention to aspergillus or mycosis contamination; control and im- prove disinfection processes. check cleanness of nests and conditions of the farm floor, make sure the opera- tor has clean hands; check the share of new males; look out for floor and dirty eggs; be careful of improper or acci- dental showers of eggs, look out for the sweating of eggs in storage; be careful of changes of new males, pay attention to aspergillus or mycosis contamination; control and improve disinfection pro- cesses. NECROPSY AND BREAKOUTS ANALYSIS