Bozhkova G, Stamatov T, Stefanov N
Vet Med Nauki. 1978;15(1):57-61.
Montly investigations have been carried out on a farm for the presence of subclinical mastitis in a total of 59 cows. As many as six examinations have been made up to the drying of the cows and two after their calving. It has been found that subclinical mastitis assumes a protracted course, and in 23.7 per cent of the cows it is present during the whole period of investigation of 6-8 months. In 42.9 per cent of the animals the recovery of the affected udder sets in without therapeutic intervention. It has also been noted that in 33.8 per cent of the diseased cows subclinical mastitis develops into a clinical form of mastitis.
每月对一个农场的59头奶牛进行亚临床型乳腺炎检查。在奶牛干奶前进行了多达6次检查，产犊后进行了2次检查。结果发现，亚临床型乳腺炎病程迁延，在6 - 8个月的整个调查期间，23.7%的奶牛一直存在该病症。42.9%的患病动物在未经治疗干预的情况下，患病乳房恢复正常。还注意到，33.8%的患病奶牛中亚临床型乳腺炎发展为临床型乳腺炎。
