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Volume 9, Number 1 >

CHARACTERS OF STAPHYLOCOCCI ISOLATED FROM DEAD CHICK EMBRYOS AND FROM PATHOLOGICAL CONDITIONS IN CHICKENS

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Please use this identifier to cite or link to this item:http://doi.org/10.14943/jjvr.9.1.1

Title: CHARACTERS OF STAPHYLOCOCCI ISOLATED FROM DEAD CHICK EMBRYOS AND FROM PATHOLOGICAL CONDITIONS IN CHICKENS
Authors: SATO, Gihei Browse this author
MIURA, Shiro Browse this author
MIYAMAE, Takeo Browse this author
NAKAGAWA, Masaro Browse this author
ITO, Akiharu Browse this author
Issue Date: Mar-1961
Publisher: The Graduate School of Veterinary Medicine
Journal Title: Japanese Journal of Veterinary Research
Volume: 9
Issue: 1
Start Page: 1
End Page: 13
Abstract: Some investigations were carried out on the staphylococci isolated from dead-in-shell chick embryos and from diseased chickens. The results obtained are summarized as follows : 1. Staphylococci were isolated from the yolks of 49 (1.4%) out of 3,463 dead embryos collected from 11 hatcheries. 2. Eighteen (45%) of the isolated 40 strains were coagulase-positive. 3. One of 92 samples of chick down in incubator collected from 19 hatcheries yielded coagulase-positive staphylococci. 4. Coagulase-positive strains from dead chick embryos and from chicken lesions indicated characteristics of Staphylococcus aureus (BERGEY'S Manual, 1957) and were pathogenic for chickens. 5. A part of the strains from chicken lesions were weak or labile in coagulase production, and they appeared to be low or non-pathogenic. Some of them showed atypical biological characteristics. In addition, one of them differed in serological character from coagulase-positive strains from chicken lesion or embryos. 6. Thirty-two (45.1%) of 71 strains (34 coagulase-positive and 37 negative) which were isolated from dead chick embryos, chicken lesions, secondary infection in fowl pox and chick down were susceptible to the phages of the International Series. Six of the susceptible strains were typable as follows ; Type I (1 strain), Type III (4) and Type II+III (one coagulase-negative strain from chick down). Lysogenicity was proven in a coagulase-negative strain from embryo. The phage of this strain was slightly active on most of the strains of coagulase-positive staphylococci of chicken origin. 7. From the results obtained from examination of dead embryos and of samples of chick down, Staphylococcus aureus seems to be inclined to occur only in a part of the hatches of some hatcheries.
Type: bulletin (article)
URI: http://hdl.handle.net/2115/1742
Appears in Collections:Japanese Journal of Veterinary Research > Volume 9, Number 1

Submitter: 獣医学部図書室

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