Porcine abortion caused by Bacillus sp

Bacillus sp is known to cause abortion in cattle and sheep, but it is rarely reported to cause abortion in swine. Bacillus sp was isolated from aborted fetuses, and lesions compatible with a bacterial infection were detected in 4 of 962 aborted porcine fetuses examined. The infection apparently results in sporadic abortions and is not likely to cause economically significant reproductive failures within a herd.     

Bovine abortion caused by infection with Leptospira pomona

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A gram-negative pleomorphic facultative aerobic organism, indistinguishable morphologically and culturally from that isolated from suppurative epididymitis in rams and described by Dodd &; Hartley (1955) Dodd, D. C. and Hartley, W. J. 1955. N.Z. vet. J., 3: 105–105. [Taylor &; Francis Online] , [Google Scholar], has, over the last five years, been isolated at this laboratory on more than ten occasions from polytenosynovitis and pyaemia in lambs, and on one occasion from mastitis in a ewe. It still remains to characterize and classify this organism, but Roberts has made a detailed comparison of it with his Histophilus ovis (Roberts, 1956 Roberts, D. S. 1956. Aust. vet. J., 32: 330–330.  [Google Scholar]) and considers that the two are indistinguishable (Roberts, 1958, pers. comm.).     

Bovine abortion and necrotic placentitis by Aspergillus terreus

A 31-month-old Japanese Black cow (Bos taurus) aborted at 5 months of gestation with no clinical symptoms. Histopathological examination of the placenta and fetus revealed severe necrotic placentitis associated with numerous irregular degenerative fungi and inflammatory cells. Regular filamentous fungi were also detected, without inflammatory response in the fetal digestive and respiratory organs. Both fungi had aleurioconidia and septa in the placenta and fetal organs and immunohistochemically stained with antibodies against Aspergillus spp. Aspergillus terreus was isolated from the fetal lung and abomasal contents as confirmed using mycological and molecular methods. This is the first immunohistochemical, morphological, and molecular identification of A. terreus in bovine placenta and aborted fetuses.     

Swine abortion caused by Candida parapsilosis

In July 2020, a sow in a breeding herd in the Chiba Prefecture, Japan, suffered abortion. A necropsy revealed pale pulmonary foci scattered in the two fetuses. Histologically, multifocal pulmonary necrosis was detected with numerous yeasts. The yeast was positively stained using the periodic acid-Schiff reaction and Grocott’s silver stain. Molecular identification indicated that the yeast was Candida parapsilosis. In conclusion, our results suggested that C. parapsilosis caused multifocal necrotizing pneumonia in the two fetuses. This study is the first report of a swine abortion with C. parapsilosis infection.     

奶牛中型无绿藻性乳房炎

目前已有12个国家报道无绿藻性奶牛乳房炎,造成严重的经济损失并对公共安全存在潜在的危害.2010年春季,北京地区某奶牛场暴发中型无绿藻引起的临床型乳房炎.从患有临床型乳房炎的10头奶牛的11个乳区分离到8株酵母样微生物,鉴定为中型无绿藻.用16种抗生素药敏纸片进行药敏试验,结果显示中型无绿藻仅对庆大霉素、链霉素和阿米卡星等氨基糖苷类抗生素敏感.同化试验证明该分离株能发酵葡萄糖和丙三醇.本试验在我国首次报道了中型无绿藻能引起奶牛临床型乳房炎.     

Bovine mycotic abortion and pneumonia

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Sir,—We should like to take this opportunity to congratulate Messrs Cordes, Dodd and O'Hara (1964 Cordes, D. O., Dodd, D. C. and O'Hara, P. J. 1964. N.Z. vet J., 12: 95–95. [Taylor &; Francis Online] , [Google Scholar]) on their excellent article on bovine mycotic abortion and pneumonia in New Zealand, and at the same time mention certain complementary features of these conditions as noted in Tasmania.     

Bovine mycotic abortion in Denmark

A survey is given of the occurrence of mycotic infections associated with abortion in Danish cattle. During a period of six years a total of 748 samples of placenta material were examined. Mycotic abortion was demonstrated in 101 cases (14%). The case rate was significantly higher (21%) during the winter months from December through February than during the rest of the year (10%). Abortions occurred as from the 135th day of pregnancy, with maximum in the eighth month, where 45% of all cases were observed. A. fumigatus was demonstrated in 77 cases, Mucor spp. in 11 cases, Absidia spp. in 5 cases, and a mixed infection with A. fumigatus and Mucor spp. in 3 cases. In 5 cases the fungi were demonstrated by microscopic and histological examination, but not by culture. The annual occurrence of mycotic abortion varied from 10% to 24% of cases of abortion examined. The latter figure was recorded in a year following a particularly heavy rainfall in the month of June.