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Natural tree shade increases milk stability of lactating dairy cows during the summer in the subtropics

机译:在亚热带的夏天,自然树木增加了哺乳奶牛的牛奶稳定性

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This research communication addresses the hypothesis that, during the summer in the subtropics, natural tree shade helps to improve milk functional characteristics such as stability and acidity. Sixteen Holstein lactating cows were enrolled. The study consisted of three periods (pre-stress, heat stress and post-stress) based on allocating grazing cows into two treatments (with and without access to shade during the Heat Stress period). Overall THI during the trial was (mean± SE) 76.0±3.4. Access to shade prevented the heat stress-related decrease in milk stability both in the ethanol and in the coagulation time test, as well as maintained milk acidity within an acceptable range (14 to 18°D).
机译:这项研究通信解决了假设,即在夏季夏季,天然树干有助于改善牛奶功能特征,如稳定性和酸度。 罗斯坦哺乳奶牛的六十六次。 该研究基于将放牧奶牛分配成两种处理(在热应力时段期间的遮阳地面的处理,包括三个时期(预应力,热应力和后应力)组成。 试验期间的总体THI(平均值±SE)76.0±3.4。 进入遮阳地防止了乙醇和凝固时间试验中的乳稳定性的热应力相关的降低,以及在可接受的范围内保持乳酸(14至18°D)。

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