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首页> 外文期刊>Tropical Animal Health and Production >Effects of management practices on yield and quality of milk from smallholder dairy units in urban and peri-urban Morogoro, Tanzania
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Effects of management practices on yield and quality of milk from smallholder dairy units in urban and peri-urban Morogoro, Tanzania

机译：管理实践对坦桑尼亚莫罗戈罗市和城郊小农户的牛奶产量和质量的影响

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摘要

A longitudinal study design was used to assess the management, chemical composition of cows' milk and quantify the microbial load of raw milk produced at farm level. Data were collected between December 2010 and September 2011 in Morogoro municipality. Milk samples were collected once every month and analysed for butter fat (BF), crude protein (CP), total solids (TS) and solids non-fat (SNF). Total bacterial count (TBC) and coliform counts (CC) were normalized by log transformation. The average milk yield was 7.0 l/day and was not influenced by feeding systems and breeds. Dairy cows owned by people who had no regular income produced more milk than government employees and retired officers. Means of BF, TS, SNF and CP were similar in different feeding systems. Wet season had significantly higher TBC (5.9 log(10) cfu/ml) and CC (2.4 log(10) cfu/ml) but feeding systems had no effect. Stocking density influenced TBC but not CC. It can be concluded that dairy cows produced low milk yield and its quality was poor
机译：纵向研究设计用于评估奶的管理，化学成分并量化农场一级生产的原奶的微生物负荷。数据收集自2010年12月至2011年9月在莫洛哥罗市。每月收集一次牛奶样品，并分析其中的黄油脂肪（BF），粗蛋白（CP），总固体（TS）和脱脂固体（SNF）。总细菌数（TBC）和大肠菌群数（CC）通过对数转换归一化。平均奶产量为7.0升/天，不受饲喂系统和品种的影响。没有固定收入的人所拥有的奶牛比政府雇员和退休人员生产的牛奶更多。在不同的饲喂系统中，BF，TS，SNF和CP的平均值相似。湿季的TBC（5.9 log（10）cfu / ml）和CC（2.4 log（10）cfu / ml）显着较高，但饲喂系统没有效果。库存密度影响TBC，但不影响CC。可以得出结论，奶牛产奶量低，质量差

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