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Volume 6, Number 4 >


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Authors: HAMADA, Sukekazu Browse this author
HASHIMOTO, Hideo Browse this author
TASAKA, Takami Browse this author
TSUCHIYA, Yoshiyuki Browse this author
Issue Date: 30-Jan-1959
Publisher: The Graduate School of Veterinary Medicine
Journal Title: Japanese Journal of Veterinary Research
Volume: 6
Issue: 4
Start Page: 181
End Page: 195
Abstract: Experimental studies were carried out to clarify the mode of S. senftenberg infection in newly hatched chicks in some hatcheries situated in or near Sapporo and to clarify the presence or disappearance of S. senftenberg which invaded into baby chicks' bodies. At the same time the reasons for the appearance of S. senftenberg in hatching compartments of incubators and the influence of S. senftenberg upon baby chicks were discussed. The conclusions obtained are summarized as follows : 1. In any hatchery so far as the writers have investigated, S. senftenberg came to be detected in the hatching compartments of incubators at time over 6〜7 weeks after the beginning of hatching (Tables 1,2 and 3). 2. The newly hatched chicks originated from such incubators are usually infected in the incubators with S. senftenberg through their respiratory and digestive organs, and the rate of S. senftenberg infection among chicks tends to run parallel with the rate of multiplication of S. senftenberg in the incubator (Tables 1,2 and 3). 3. These infected chicks carry the greatest numbers of S. senftenberg during first about 1 week of life, but so far as they are brooded under good feeding, management and sanitation, they remain healthy in appearance. They usually eliminate S. senftenberg from their bodies in 4〜6 weeks without therapeutic measures (Tables 6 and 7) and may be expected to exhibit no sequelae by S. senftenberg in future. 4. The regions where S. senftenberg lurks in baby chicks' bodies are the respiratory and digestive organs (Tables 6 and 7). 5. It is sure that S. senftenberg multiplies in hatching compartments of incubators working with normal temperature and humidity. However it is not yet proved what may bring, and how S. senftenberg is brought into the incubator for the first time. 6. As S. senftenberg contained in incubator is readily killed by formaldehyde gas, the hatching compartments of incubators should be cleansed and disinfected with the fumigation of formalin at intervals of 6 weeks after the beginning of hatching.
Type: bulletin (article)
Appears in Collections:Japanese Journal of Veterinary Research > Volume 6, Number 4

Submitter: 獣医学部図書室

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