Hogan J S, Smith K L, Todhunter D A, Schoenberger P S
Department of Dairy Science, Ohio State University, Wooster 44691.
J Dairy Sci. 1990 Jul;73(7):1756-61. doi: 10.3168/jds.S0022-0302(90)78853-4.
Bacterial counts associated with recycled newspaper, wood shavings, and pelleted corn cobs used as bedding for lactating dairy cows were compared. Chopped newspaper and pelleted corn cobs had similar gram-negative bacterial, coliform, and streptococcal bedding counts. Staphylococcal counts in pelleted corn cobs were greater than in chopped newspaper. Conversely, gram-negative bacterial, coliform, and staphylococcal counts in chopped newspaper were greater than in wood shavings. Coliform and streptococcal counts did not differ between chopped newspaper and wood shavings bedding materials. Teat swab counts from cows bedded on pelleted corn cobs were greater than those from cows bedded on chopped newspaper for gram-negative bacterial, coliform, Klebsiella species, and staphylococci. Streptococcal teat swab counts did not differ between cows bedded on chopped newspaper and pelleted corn cobs. Cows bedded on chopped newspaper and wood shavings had similar gram-negative bacterial, coliform, and Klebsiella species teat swab counts. Streptococcal and staphylococcal teat swab counts were greater from cows bedded on chopped newspaper than those from cows bedded on wood shavings. Teat swab and bedding counts were correlated. In general, bacterial counts in bedding suggest no advantage in using chopped newspaper over pelleted corn cobs or wood shavings in reducing exposure of teats to environmental mastitis pathogens.
对用作泌乳奶牛垫料的回收报纸、木屑和颗粒状玉米芯的细菌数量进行了比较。切碎的报纸和颗粒状玉米芯的革兰氏阴性菌、大肠菌群和链球菌垫料数量相似。颗粒状玉米芯中的葡萄球菌数量高于切碎的报纸。相反，切碎报纸中的革兰氏阴性菌、大肠菌群和葡萄球菌数量高于木屑。切碎报纸和木屑垫料材料中的大肠菌群和链球菌数量没有差异。对于革兰氏阴性菌、大肠菌群、克雷伯菌属和葡萄球菌，以颗粒状玉米芯为垫料的奶牛的乳头拭子细菌数量高于以切碎报纸为垫料的奶牛。以切碎报纸和颗粒状玉米芯为垫料的奶牛的链球菌乳头拭子细菌数量没有差异。以切碎报纸和木屑为垫料的奶牛的革兰氏阴性菌、大肠菌群和克雷伯菌属乳头拭子细菌数量相似。以切碎报纸为垫料的奶牛的链球菌和葡萄球菌乳头拭子细菌数量高于以木屑为垫料的奶牛。乳头拭子和垫料细菌数量相关。总体而言，垫料中的细菌数量表明，在减少乳头暴露于环境性乳腺炎病原体方面，使用切碎报纸相对于颗粒状玉米芯或木屑没有优势。
