Disinfection of the hatchery

Disinfection of the hatchery

Destroying bacteria such as E. Coli, Pseudomonas and Staphylococcus, but also the Aspergillus mould is extremely important in hatcheries. All these pathogens have negative effects on hatchability, first-week mortality and chick quality. The presence of moulds is always a major challenge at a hatchery because the hatchery environment and climate are ideal: high relative humidity, high temperatures and organic matter (eggs, cardboard materials, etc.). In addition to the active ingredient, the method of application also determines how effectively the pathogens are destroyed. An active ingredient or combination of ingredients may be highly effective against the target pathogens, but if they are not applied properly, you will never achieve the desired results. When disinfecting rooms or surfaces: the more liquid used, the better the contact with the surfaces. So, it is not the concentration (mix according to the instructions), but the total approach that matters. For the best results and efficacy, alternate between disinfectants. Each product has its own mode of action. Changing the products you use means you can attack pathogens in multiple ways.

Effectivity of disinfectants

The effect of a disinfectant depends on: • contact time with the surface • temperature • concentration • acidity • nature of the soiling • sensitivity of the dirt to the disinfectant.

Always follow the supplier’s instructions.

Properties of disinfectants Product Mycoplasma Gram + Gram Pseudomonadaceae Enveloped viruses Naked viruses Bacterial spores Coccidia Moulds

Hypochlorus ++ + + + + + + - + Formaldehyde ++ ++ ++ ++ ++ + + - + Glutaraldehyde ++ ++ ++ ++ ++ + + - + Hydrogen peroxide ++ + + + + + + - + Acid (peracetic acid) + + + + + - +/- - +/Phenols (cresols) ++ ++ ++ ++ ++ - - ++ + Quaternairy Ammonium Compounds + ++ + + - - - - +/Sodium hydroxide + +/- +/- +/- - - - - +/Ammonia + - - - - - - + -

What causes these brown streaks?

Choose a disinfectant that does not have a corrosive effect on equipment and tools: chlorine in disinfectant corrodes stainless steel. The wheels on the trolleys can easily corrode, and therefore function poorly.

LOOK-THINK-ACT Caution!

• Make sure that chemicals have not expired, because then they will no longer be effective. • Check the concentrations used in the different machines and cleaners. • Increase your hygiene by walking through the hatchery regularly looking for ways to improve cleaning procedures. • Sample for bacteria and Aspergillus and monitor this closely.

copyright protected

++ = perfect effectiveness + good effectiveness +/– mild effectiveness – ineffective

Formalin disinfection is easy to use, and formaldehyde (gas) reaches all target areas. However, a respirator must be worn as formaldehyde is classified as a carcinogen. The effectiveness of different disinfectants varies widely, so make a conscious choice. In practice, an arsenal of different disinfectants is used to disinfect eggs and rooms. Whether certain disinfectants are approved for use varies greatly from country to country and per region.