Note: This is the translation of an old book of Mr. Piet de Weerd. (Unfortunately we can no longer supply the english book..)
This Book is now finally in print again all these years after it was first published, because the first edition was too small and because most copies of it have gone lost or are worn to shreds.
(article only available in dutch, please use the translate button)
Article: NPO magazine 61 , june 6, 2008 number 23
Potentiële gezondheidsproblemen op grote hokken met name zogenaamde “one loft race” hokken, maar ook op sommige kleine hokken.
Zo’n 12 jaar geleden vloog ik voor de eerste keer naar China samen met mijn Taiwanese agent. Als eerste bezochten we het mooie grote hok van Eijerkamp in Beijing. We ontmoetten de sympathieke Wang Tjen, reporter voor een paar magazines, thans prominent duivenliefhebber – zakenman in alles wat met duiven te maken heeft. Tevens de rechterhand van George Wang uit Taiwan, die altijd op de achtergrond blijft, maar grote invloed heeft op de duivensport in China, Taiwan en de rest van de wereld. In de loop der jaren bezocht ik de hokken een aantal malen.
Since the middle of 1991 I became familiar with a new phenomenon of a terrible disease in mainly old birds. With mortality-rates up to 30% of the loft. The disease hits (strikes) very fast. In the morning there is nothing special to be seen, everything is normal. In the afternoon the pigeon(-’s) don’t want to eat or drink and look a little sick. They start to produce yellow (sometimes green) droppings. the next morning they are succumbating, while breathing heavily, within 24 hours. The rest looks okay, but a couple of days later new casualties may emerge. In the second half of 1991. I saw and heard of thousands of dead pigeons in the South-West of Holland. Unfortunately there is no specific vaccine available neither an effective treatment, as in most virus diseases.
Adenovirus infections have been described worldwide in numerous avian species. The pathogenicity of the viruses is usually low and their precise role in clinical disease is often not clear. Most Adenoviruses are regarded as complicating organisms in diseases primarily induced by other agents or, as component of multi factorial problem. A few Adenoviruses, however, can be considered “exceptions” that are highly and primarily pahtogenic, for example: egg drop syndrome (EDS) virus, quail bronchitis virus, haemorrhagic enteritis virus and pigeon Adenoviruses. Pigeon Adenoviruses are responsible for two distinct disease entities, both causing serious harm to the pigeon population.
Mid October began the yearly period of Paratyphoid. This season a bit earlier than other years and I don’t know why. The weather was during a longer period than normal nice and pleasant. At the moment that the pigeons moult the sixt or seventh feather we quite often see that the disease comes to a break out, most of the times at the stock/breeding loft, but also outstanding racers can be amongst the victims of this disease.
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