Sender G, Bassalik-Chabielska L
Instytut Genetyki i Hodowli Zwierzat Polskiej Akademii Nauk, Jastrzebiec, Mroków.
Med Dosw Mikrobiol. 1990;42(3-4):178-83.
The aim of this study was to determine an influence of udder infection on milk chloride level and on milk productivity of cows of black and white race. Bacteriological analysis was performed by bacterial isolation from milk collected in sterile conditions from single lobes of mammary gland. The study was aimed to detect the following bacteria: Streptococcus agalactiae, Streptococcus uberis, Streptococcus agalactiae, Staphylococcus aureus, Staphylococcus epidermidis, Actinomyces pyogenes, Enterobacteriaceae rods, Corynebacterium bovis, and Micrococcus sp. Milk chloride level was determined by burette method in 1250 milk samples collected from entire udder. Milk productivity was determined on the day of bacterial isolation. Statistical analysis of the results of the study on udder infection, milk chloride level, and milk productivity of mammary gland did reveal lack of a simple correlations between those parameters and in the indirect manner indicated an influence of inappropriate maintenance conditions of tested cows on the health condition of their udder. It seems possible that alkalosis and acidosis in cows, taken into consideration in discussion section, could constitute a factor influencing the frequency of mastitis incidence.
本研究的目的是确定乳房感染对黑白花奶牛的乳氯水平及产奶量的影响。通过从无菌条件下采集的单个乳腺叶的乳汁中分离细菌进行细菌学分析。该研究旨在检测以下细菌：无乳链球菌、乳房链球菌、无乳链球菌、金黄色葡萄球菌、表皮葡萄球菌、化脓放线菌、肠杆菌科杆菌、牛棒状杆菌和微球菌属。通过滴定法对从整个乳房采集的1250份乳汁样本测定乳氯水平。在细菌分离当天测定产奶量。对乳房感染、乳氯水平及乳腺产奶量的研究结果进行统计分析后发现，这些参数之间缺乏简单的相关性，且以间接方式表明试验奶牛不适当的饲养条件对其乳房健康状况有影响。在讨论部分考虑到的奶牛碱中毒和酸中毒似乎可能是影响乳腺炎发病率的一个因素。
