不同养羊场的生鲜羊奶的细菌学质量
Bacteriological Quality of Raw Ovine Milk from Different Sheep Farms.
作者信息
Tonamo Andualem, Komlósi István, Varga László, Czeglédi Levente, Peles Ferenc
机构信息
Doctoral School of Animal Husbandry, University of Debrecen, 138 Böszörményi Street, 4032 Debrecen, Hungary.
Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 138 Böszörményi Street, 4032 Debrecen, Hungary.
出版信息
Animals (Basel). 2020 Jul 9;10(7):1163. doi: 10.3390/ani10071163.
The primary purpose of this research was to examine the bacteriological properties of raw ovine milk produced by Merino, Tsigai, Dorper, Lacaune, and British Milk Sheep flocks on four sheep farms located in the eastern part of Hungary. In addition to individual raw milk (IRM) and bulk tank milk (BTM) samples, the udder surface (US) of ewes was also tested for bacteriological quality. A total of 77 US, 77 IRM, and 10 BTM samples were collected in the early morning during regular milking sessions. The samples, kept cooled at temperatures below 4 °C, were delivered to the microbiological laboratory and were examined immediately. The relatively low numbers of bacteria in both US and IRM samples reflected good housing conditions of ewes kept on the four farms studied. However, BTM samples had up to 3.5-4.0 log CFU/mL higher mean bacterial counts than their IRM counterparts, and the mean levels of bacteria in BTM on two farms even exceeded the regulatory limit of 6.18 log CFU/mL. Further studies need to be performed to clarify this issue.
本研究的主要目的是检测匈牙利东部四个养羊场的美利奴羊、茨盖羊、杜泊羊、拉科讷羊和英国奶羊所产生鲜羊奶的细菌学特性。除了个体生鲜奶（IRM）和奶罐散装奶（BTM）样本外，还对母羊的乳房表面（US）进行了细菌学质量检测。在常规挤奶时段的清晨共采集了77份乳房表面样本、77份个体生鲜奶样本和10份奶罐散装奶样本。这些样本保存在4℃以下的低温环境中，随后被送往微生物实验室并立即进行检测。所研究的四个农场中母羊的饲养条件良好，这体现在乳房表面样本和个体生鲜奶样本中的细菌数量相对较少。然而，奶罐散装奶样本的平均细菌计数比个体生鲜奶样本高出3.5 - 4.0 log CFU/mL，且两个农场的奶罐散装奶细菌平均含量甚至超过了6.18 log CFU/mL的监管限值。需要进一步开展研究以阐明这一问题。
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