Journal of the Japan Veterinary Medical Association

[title in Japanese]

[in Japanese]

1970 Volume 23 Issue 5 Pages 269-275
Published: May 20, 1970
Released on J-STAGE: June 17, 2011

DOIhttps://doi.org/10.12935/jvma1951.23.269

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[title in Japanese]

[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...

1970 Volume 23 Issue 5 Pages 275-282
Published: May 20, 1970
Released on J-STAGE: June 17, 2011

DOIhttps://doi.org/10.12935/jvma1951.23.275

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Isolation of Vibrio coli from Pigs in Japan

M. KASHIWAZAKI, S. NAMIOKA, Y. SATOH

1970 Volume 23 Issue 5 Pages 282-286
Published: May 20, 1970
Released on J-STAGE: June 17, 2011

DOIhttps://doi.org/10.12935/jvma1951.23.282

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Isolation of Vibrio coli from the feces of pigs in Japan was carried out by a selective filtration technic using millipore filters 0.65E in pore size. The results obtained were as follows.
1. The isolation was positive in 57 pigs (75.0%) of 76 with clinical or pathological signs of dysentery, and 37 pigs (30.6%) of 121 having close contact with diseased animals. Of 105 pigs maintained in herds known to be free from the occurrence of dysentery, 12 pigs (11.4%) were positive for isolation. No organisms were demonstrated in the feces of 35 pigs maintained in a disease-controlled (SPF) herd.
2. The distribution of the vibrio in the gastrointestinal tracts was noteworthy in pigs affected with dysentery. A number of vibriones were isolated from the large intestine, but not from the small intestine or stomach.
3. On the basis of H₂S production and 1% glycine tolerance, the isolates were divided into three biotypes; that is, biotype I, H₂S (+) and 1% glycine (+), biotype II, H₂S (+) and 1% glycine (-), and biotype III, H₂S (-) and 1% glycine (-).

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Studies on Blindness of Chicks Caused by Commercial Feeds

I. A Specific Substance Causing Blindness and Clinical Symptoms and Pathological Changes of Affected Chicks

N. KUBA, Y. HASHIMOTO, M. NISHIMURA, M. KONDO, H. MATSUBARA

1970 Volume 23 Issue 5 Pages 291-298
Published: May 20, 1970
Released on J-STAGE: June 17, 2011

DOIhttps://doi.org/10.12935/jvma1951.23.291

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In August, 1966, blindness began to occur collectively among baby chicks caused by some commercial feeds in many districts of the western part of Japan. It usually affected some strains, such as Kimber K 44, Babcock B 390, and Warren Sex-Sal-Link F, but not a White Leghorn Strain.
The present experiment revealed that blindness had been provoked among chicks given feeds supplemented with ammeline and fish meal.
1. A specific substance causing blindness in baby chicks was an unknown organic compound contained in some fish meal. It had been added to the fish meal unlawfully as a false protein factor to increase the nitrogen content.
2. Regardless of the specific substance contained in the feed blindness was provoked in baby chicks by feeding a diet containing ammeline.
3. The clinical symptoms and gross and microscopic findings of the retina of blind chicks fed some fish meal were in accord with those of blind ones fed a diet supplemented with ammeline.
4. Blindness and dilatation of the pupil were observed in chicks 48hours to 7days after oral administration with ammeline added to a diet at more than 0.5%. Abnormal waves were found in the electroretinogram of chicks 24hours after administration with ammeline at a level of 3%.
6. Ammeline had a specific affinity to the retina of the chick. Early histological examination revealed the disappearance of fuscin granules from the retinal epithelium, conspicuous edema, degeneration and destruction of the visual cells, and retinal detachment. So that the chicks lost their own sight. Late examination revealed the lesions of the retina replaced partly by proliferated connective tissue fibers. The diminution and disappearance of paraboloid glycogen from the inner segment of the visual cells were demonstrated by using Bauer-Feulgen's method for glycogen.

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Pathological Studies on Newcastle Disease

I. Central-Nervous-System Lesions Accompanied by Necrotic Foci Caused by Asian Type Newcastle Disease

H. KATOH, S. YOSHIMURA, [in Japanese]

1970 Volume 23 Issue 5 Pages 298-304
Published: May 20, 1970
Released on J-STAGE: June 17, 2011

DOIhttps://doi.org/10.12935/jvma1951.23.298

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When vaccinated chickens of a flock were infected with Asian type Newcastle disease (ND), some of them showed a nervous syndrome. Pathological examination was made on 36 infected chickens of 9 flocks.
1. Typical gross lesions of Asian type ND were observed in non-vaccinated flocks. On the other hand, characteristic central-nervous-system (CNS) lesions occurred in the vaccinated flock.
2. CNS lesions were found in the cerebral hemispheres, midbrain, cerebellum, and medulla oblongata. Disseminated non-purulent encephalitis was accompanied by primary or secondary necrotic foci.

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Erratum

1970 Volume 23 Issue 5 Pages 314
Published: 1970
Released on J-STAGE: June 17, 2011

DOIhttps://doi.org/10.12935/jvma1951.23.5_314

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[title in Japanese]

1970 Volume 23 Issue 5 Pages 317-322
Published: May 20, 1970
Released on J-STAGE: June 17, 2011

DOIhttps://doi.org/10.12935/jvma1951.23.317

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[title in Japanese]

1970 Volume 23 Issue 5 Pages 325-336
Published: May 20, 1970
Released on J-STAGE: June 17, 2011

DOIhttps://doi.org/10.12935/jvma1951.23.325

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