Getting the flocks Salmonel- la free required an action plan that was fol- lowed for years.


Another important measure Jansen took was installing a contiguous beetle strip on the all walls at a height of about 1.5 metres. Consultant Van Beers notes that there is a one-to-one relationship between Salmonella and darkling beetles.


had to be sealed. On Jansen’s farm this was done using a gel but it can also be done with cement or bitumen. Van Beers says that the kind of material to be used depends on the type of housing.


Disastrous darkling beetle Van Beers notes that there is a one-to-one relationship be- tween Salmonella and darkling beetles, also called styrofoam beetles because they love to eat this insulation material often used in poultry houses. “So, if a farmer has styrofoam beetles


in his poultry houses and a house tests positive for Salmonel- la infantis or S. java, it is almost impossible to tackle the problem,” says Van Beers. This makes the destruction of these pests a top priority. Van Beers explains: “Normally styrofoam beetles (Alphitobius diaperinus) are found in the birds’ drop- pings. When the manure cools down, the beetles crawl into secluded places in the house (where you cannot reach them with pesticides). As soon as the house warms up again to re- ceive the next flock, they emerge from these sheltered places causing the day old chicks to become infected again.” Good


▶ POULTRY WORLD | No. 4, 2020 19


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