Lohmann Hatchery Guide

11 11 LOHMANN TIERZUCHT › MANAGEMENT GUIDE What is Short Period of Incubation during Eggs Storage? Some time ago this was not thought well of in any incubation philosophy, but in re- cent years hatchery specialists have tested this process with fantastic and incredible results, with the S.P.I.D.E.S eggs at long storage being able to hatch with good percentage and good chick quality. It is very important have knowledge like this, because with a little management we can bring about a great improvement in our performance. This process consists in helping and in- creasing the cellular replication during storage. This is possible by increasing the temperature. In the past we tried to reach the set-point temperature of incubation during the first test, but we quickly noted that this did not help. However, the easily reachable temperatures of 33 °C/35 °C are sufficient for cellular replication, and keep our embryos alive at hypoblast time. Con- cerning the following scheduling incuba- tion step, or S.P.I.D.E.S, we reduce the time for decreasing temperature and return the eggs to the storage room more quickly. A modern hatchery which knows about the prevision of eggs storage in advance can organise a perfect schedule to arrange the cellular replication or S.P.I.D.E.S. Some hatcheries have dedicated machines or “special rooms” where this is arranged directly in the storage. In order to favour reduced movements of eggs and relative costs of the operator, eggs have to be at a minimum of storage day 3 - 5 before be- ing warmed up. Some brands of S.P.I.D.E.S machines can have a fantastic programme and the sufficient capacity to arrange this process in 8/10 hours from; warm- up – temperature – drop – storage set . Please remember that our embryos have a higher possibility of surviving and hatch- ing after this if the egg storage is 12 days. If we need to conserve the eggs for even more days, it is necessary to arrange an- other cellular replication between days 10 and 12 and to repeat this interval of time for the necessary schedule. We have ex- perience and data for programmes with up to cellular replications and for over 35 days of storage in layers, and even more for turkeys. It is important to remember to reduce the incubation time schedule; › › N° 1 S.P.I.D.E.S of less than around 4 hours › › N° 2 S.P.I.D.E.S of less than 6 hours › › N° 3 and plus S.P.I.D.E.S of less than 6–8 hours Please remember that this length of time can change the processes of time and temperature. It is important to verify the effect of the process in the eggs with ac- curate testing and to balance the condi- tions of our hatchery. It is important to remember that different warming and cooling capacity of machines used for S.P.I.D.E.S. can influence the value of the programme. Please verify the performance in an early can- dling test. S.P.I.D.E.S Incubations or Pre-storage incubation