HOUSING SYSTEMS BIOSECURITY HOUSING & BROODING EARLY MANAGEMENT LIGHTING NUTRITION HEALTH HATCHING EGG MANAGEMENT 103 103 LOHMANN › MANAGEMENT GUIDE DISINFECTION OF HATCHING EGGS The method of disinfection – whether fumigation, sprinkling, nebulisation, gasification, or immersion – depends on the regulations of each country and the list of permitted products. Since all disinfectant products have possible side-effects, it’s important to select one that meets your needs and follows the manufacturer’s specifications regarding dosage, timing, and application. Regular verification of your process is crucial. One effective method involves using a swab on the surface of one undisinfected egg and one disinfected egg or rolling them in a culture medium to check for microbial growth. This approach helps ensure the effectiveness of the disinfection procedure. An Eggshell contains 7,000–17,000 microscopic pores that let air and moisture in, crucial for the embryo’s development. These pores open shortly after the egg is laid, allowing bacteria, germs, and fungi to potentially penetrate. Hence, it is imperative that hatching eggs undergo disinfection shortly after they have been laid. The promptness and efficacy of this disinfection process are essential. VERTICAL TRANSMISSION Contaminated by pathogens as a result of an existing infectious disease in the ovary or oviduct. HORIZONTAL TRANSMISSION Hatching eggs can be contaminated by pathogens through penetration of the eggshell after being laid. Ovary Oviduct
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