Fachbereich Veterinärmedizin



    Bruteihygiene bei Puten;Literaturübersicht (2001)

    Storck, Barbara-Maria
    Berlin, 2001 — 122 Seiten
    Institut für Geflügelkrankheiten

    Königsweg 63
    14163 Berlin
    +49 30 838 62676

    Abstract / Zusammenfassung

    From the moment of laying until the beginning of breeding, there are a lot of possibilities to contaminate the hatching eggs of the turkey. Starting with the contact of the eggs with the cloace, the contact with the feathers, nests and nest materials, the contact with the hands of the people collecting the eggs and its contact with the boxes used for transport, there are a lot of chances to get infected.The time between laying and disinfecting plays a big role in this context, because the air chamber under the egg shell is built up, while the egg cools down. Together with this current of air into the egg other substances and also bacteria can be transported into the egg, where most of the methods of disinfecting can"t reach them any more.Therefore the point of time when the disinfecting takes place is at least of the same importance as the method and the solution you use for disinfecting. All kinds of means hatching egg cleaning can result in the reduction of contamination by bacteria but none is able to eliminate all the bacteria without damaging or killing the embryo.Some of the methods make the penetration of the egg shell by bacteria easier, that is? by destroying the cuticula, for example by using sand paper and? by dipping the eggs into a contaminated solution at the wrong temperature so that the bacteria can be sucked inside the egg.It"s wrong to think that you can more or less disregard the hygienic conditions of the surroundings of the eggs, just because you are disinfecting your eggs.But you might turn your thoughts into the opposite direction:It could be significant to stop cleaning and desinfecting the eggs, which have been produced in surroundings with a low rate of bacteria, that are collected every two hours and whose cuticula is undamaged and clean.All those who work at the production of hatching eggs of turkeys know that this is nearly impossible. But this must ot mean that we don"t have to try and get as close as possible to that status.The following regulations can help us to reach the highest-possible standards:Making the hen using the nest for laying her egg, keep up optimal hygienic conditions inside the nest, have enough nests in the farm, collect the eggs at least every 2 hours, do not use dirty eggs and floor eggs for hatching.