Skrzypek R, Wójtowski J, Fahr R-D
Department of Cattle Breeding, August Cieszkowski Agricultural University, Wollynska Str. 33, 60-637 Poznan, Germany.
J Vet Med A Physiol Pathol Clin Med. 2004 Apr;51(3):127-31. doi: 10.1111/j.1439-0442.2004.00611.x.
The aim of this paper was a retrospective analysis of factors affecting the somatic cell count (SCC) in cow bulk tank milk. The investigations concerned the year 2000 and were conducted on 212 family dairy farms in the Wielkopolska region (Western Poland). The average herd size was 13.3 cows (ranging from 5 to 48), whereas the mean SCC was 269,000 in 1 cm3 of milk (ranging from 63,000 to 631,000). In the period from July to September a higher SCC (P < or = 0.01) was found than in the other months. In herds of more than 15 cows, higher SCC values (P < or = 0.05) were observed than in the smaller herds. The following management and technological factors significantly decreased SCC: a 7-8-week dry period (versus shorter period), foremilking with the use of a forestripper, practicing manual udder massage before milking, individual rationing of feeds according to production, and the application of MgO and beta-carotene additives to the feed ration.
本文旨在对影响奶牛混合罐奶体细胞计数（SCC）的因素进行回顾性分析。调查涉及2000年，在大波兰地区（波兰西部）的212个家庭奶牛场进行。平均牛群规模为13.3头奶牛（范围从5头至48头），而每立方厘米牛奶中的平均SCC为269,000（范围从63,000至631,000）。在7月至9月期间，发现SCC高于其他月份（P≤0.01）。在奶牛数量超过15头的牛群中，观察到SCC值高于规模较小的牛群（P≤0.05）。以下管理和技术因素显著降低了SCC：7 - 8周的干奶期（相对于较短的干奶期）、使用挤奶杯进行预挤奶、挤奶前进行人工乳房按摩、根据产量进行个体饲料定量以及在饲料日粮中添加氧化镁和β-胡萝卜素添加剂。
