本邦の犬には犬糸状虫が広くかつ高率に分布しているが, 他の糸状虫は沖縄を除いては未だ知られていない. 著者らは近年東京都西南地域に飼育される糸状虫子虫陽性犬110頭を対象とし, アセトン集虫法を用いて子虫の形態調査を行なった.
検出された子虫は全て無鞘で, 体長・体巾の測定値, その他形態から2種頼に区別された. すなわち, 109頭から検出された子虫は大型で犬糸状虫子虫と同定され, 1頭から検出された子虫は小型でDip. reconditum子虫と同定された.Dip. reconditum子虫は米国ケンタッキー州から輸入した2才のプロットハウンドに見出されたものであり, 本邦では沖縄以外の地域における最初の報告である.
今回の調査から東京地域の犬に一般に見出される糸状虫は犬糸状虫であるが, 他種糸状虫の流行地から搬入された犬の検診には犬糸状虫以外の糸状虫を考慮して診断を行なう必要がある.

抄録全体を表示

Salmonella organisms were isolated from 1.9% of the chickens kept on a poultry farm and 51.9% of the feces scattered in a chicken house. Of the strains isolated on the farm, 98.3% belonged toSalmonella sofia. This type was detected also from dressing, packing, and processing plants of chicken at a high frequency, or as high as 94.7% from a certain dressing plant.
From the chicken meat shops examined, S. sofiawas not isolated in 1969, but was at a rate of 15.1 and 42.3% in 1970 and 1971, respectively. The isolated.S. sofiapossessed such biochemical properties as identical with those of subgenus II of Kauffmann and a monophasic organism with an antigenic structure of 4, 12: b. Of the strains isolated, 97.9% were resistant to some drugs, mostly to streptomycin (50mcg/ml).

抄録全体を表示

On four hog farms in Okayama Prefecture, a disease broke out among pigs 3 to 4 months of age during a period from November, 1970, to April, 1971. It caused pyrexia, tachypnea, anorexia, diarrhea, constipation, and cyanosis of the auricles, four extremities, and hypogastric region, and eventual death, which usually occurred after a course of 1 to 4 days. It was diagnosed as pratyphoid fever due toSalmonella choleraesuis.
Autopsy revealed pulmonary edema, congestion of the pulmonary apex and lobus medius, splenomegaly and obscurity of follicles in the spleen, cloudy swelling of the liver, mild petechiae beneath the renal capsule and in the cardiac coronary region, and hyperemia and hemorrhage of principal lymph nodes.
Histological examination revealed hyaline degeneration and thrombosis of small blood vessels of the lung and septal interstitial pneumonitis, activation of the reticuloendothelial cells of the liver and lymph nodes, and well-defied necrosis in pulmonary lobules and diffuse necrosis in lymph nodes.
Sal. choleraesuiswas isolated purely from principal organs of dead pigs. Pigs which had withstood the infection showed an increase in agglutination titer of blood against this organism. The average morbidity and fatality were 21.3 and 34.8%, respectively, on the four hog farms.

抄録全体を表示

A total of 61 strains (including 1 strain of stock culture ATCC 4617) ofBordetella bronchisepticaisolated from swine were examined for sensitivity to 52 antibacterial drugs by means of a plate dilution method. Of them, 39 strains were derived from 35 pigs presenting clinical sighs of atrophic rhinitis and 21 strains from apparently healthy pigs.
The results obtained are summarized as follows. Many strains were highly sensitive to sulfa drugs, tetracyclines, colistin, polymyxin-B, and gentamicin.
Most of them were relatively sensitive to fradiomycin, erthromycin, kanamycin, chloramphenicol, novobiocin, and oxolinic acid.
Most of the strains tested were inclined to be decreasingly sensitive to aminobenzyl penicillin, oleandomycin, thiophenicol, bacitracin, streptomycin, macarbomycin, virginiamycin, spiramycin, tylosin, and mikamycin in the order listed. On the other hand, 11.5% of the strains tested were resistant to sulfa drugs and manifbsted a cross-resistance to aminobenzyl penicillin and streptomycin.

抄録全体を表示

キノキサリン誘導体CDとニトロフラン誘導体PZの2種の薬剤を用いて, 両薬剤に対するA. vibrioおよび4種の対照群 (V. fetus, V. bubulus, V. coli, V. parahemolyticus) の感受性を調べて, つぎのような知見を得た.
1. A. vibrioの全供試株はCDに対してMICが0.78mcg/ml以下, PZに対しても3.13mcg/ml以下と両薬剤に高い感受性を示した.とくに, CDに対しての感受性が高く, 全株の57.1%がMIC 0.09mcg/ml以下であった.
2.V. fetus, V. bubulusおよびV. coliはA. vibrioと同様に両薬剤に感受性を示し, MICもほぼ同じであった.
3.V. parahemolyticusは両薬剤に対してきわめて低感受性, あるいは耐性であった.
4. 今回の試験ではA. vibrioの由来や生化学的性状の違いによる薬剤感受性の差は認められなかった.
終わりに薬品を提供くださつた台糖ファイザーKKに深甚なる謝意を表します.

抄録全体を表示