Gudding R
Acta Vet Scand. 1980;21(2):256-66. doi: 10.1186/BF03546888.
The nuclease activity in quarter milk samples from cows with mastitis, and in vitro nuclease production by some udder pathogenic microorganisms were tested. Results concerning Staphylococcus aureus are, however, dealt with in a separate paper. Streptococcus dysgalactiae was found to be a vigorous and frequent producer of nuclease both in vivo and in vitro. The production by S. agalactiae was quantitatively inferior to that by S. dysgalactiae. Nearly half of the S. epidermidis strains were found to excrete a nuclease, and this enzyme was also demonstrated in the milk of cows with S. epidermidis mastitis. Comparatively high nuclease activity was recorded in the udder secretions of some cows with summer mastitis. All the tested strains of Gorynebacterium pyogenes were nuclease positive when tested by agar plate methods.
对患有乳腺炎奶牛的四分奶样中的核酸酶活性以及一些乳房致病微生物的体外核酸酶产生情况进行了检测。不过，关于金黄色葡萄球菌的结果在另一篇论文中论述。发现乳房链球菌在体内和体外都是核酸酶的活跃且常见产生菌。无乳链球菌的核酸酶产生量在数量上低于乳房链球菌。近一半的表皮葡萄球菌菌株被发现能分泌核酸酶，并且在患有表皮葡萄球菌乳腺炎奶牛的乳汁中也证实了这种酶的存在。在一些患有夏季乳腺炎奶牛的乳房分泌物中记录到了相对较高的核酸酶活性。当通过琼脂平板法检测时，所有测试的化脓棒状杆菌菌株核酸酶均呈阳性。
