Hill A W
Institute for Animal Disease Research, Compton Laboratory, Newbury, Berkshire.
Res Vet Sci. 1988 May;44(3):386-7.
Following challenge of 23 quarters of 17 lactating cows with 10(3) colony forming units of Streptococcus uberis 0140J, 20 (87 per cent) developed clinical mastitis. Once the disease had resolved each animal was rechallenged in two quarters, one previously challenged and one additional quarter. Of the 34 secondary quarter challenges 11 (32.2 per cent) led to clinical mastitis, a highly significant reduction over the primary challenges.
用10³个乳房链球菌0140J菌落形成单位对17头泌乳奶牛的23个乳腺进行攻毒后，20头（87%）发生了临床型乳腺炎。疾病痊愈后，每头动物的两个乳腺再次接受攻毒，一个是之前攻毒过的，另一个是额外的乳腺。在34次二次乳腺攻毒中，11次（32.2%）导致了临床型乳腺炎，与初次攻毒相比有极显著降低。
