挤奶机真空度对牛奶体细胞数和牛乳头末端壁厚的影响
发布时间：2019-02-13 00:24
【摘要】：为了研究挤奶机系统真空度不同时的挤奶效果,解决目前挤奶机使用中系统真空度缺乏科学设定依据的问题,该文以12头高产泌乳牛(单产(7.4±0.4)t)为试验对象,以体细胞数(somatic cell count,SCC)、乳头末端壁厚变化率以及挤奶量等作为挤奶效果评价指标参数,在系统真空度分别为44、46以及48 kPa时,研究了系统真空度对泌乳牛挤奶过程不同阶段的内套真空度和挤奶杯口真空度的影响,量化了系统真空度对挤奶效果评价指标的影响程度。研究表明,当系统真空度从44 kPa增加至48kPa时,挤奶量、挤奶时间以及平均奶流量均无显著差异,但体细胞数的对数(P0.05)和乳头末端壁厚变化率(P0.05)均显著增加。研究认为试验挤奶机用44 kPa的系统真空度比用46或48 kPa时的效果更好。该文为中国挤奶机使用中系统真空度的优化设置提供技术支持。
[Abstract]:In order to study the milking effect of different vacuum degree of milking machine system, and to solve the problem that the vacuum degree of the milking machine is lack of scientific basis in the use of milking machine at present, 12 high-yield lactation cattle (7.4 卤0.4) t) per unit yield) were used as experimental objects in this paper. Somatic cell number (somatic cell count,SCC), the rate of wall thickness at the end of the papilla and the milking amount were taken as the parameters for evaluating the milking effect. When the vacuum degree of the system was 4446 and 48 kPa, respectively. The effect of system vacuum on the internal vacuum and cup mouth vacuum in different stages of milking process was studied, and the degree of influence of system vacuum on the evaluation index of milking effect was quantified. The results showed that when the system vacuum increased from 44 kPa to 48kPa, there was no significant difference in milking amount, milking time and average milk flow, but the logarithm of somatic cell number (P0.05) and the rate of change of papillary end wall thickness (P0.05) were significantly increased. The results show that the system vacuum of 44 kPa test milking machine is better than that of 46 or 48 kPa. This paper provides technical support for the optimization of system vacuum in the use of Chinese milking machines.
【作者单位】： 中国农业大学工学院;农业部农业机械试验鉴定总站;中国奶业协会;
【基金】：农业部农产品质量安全监管(生鲜乳质量安全监管)项目(201484);农业部农业技术试验示范专项经费(农机)项目-奶牛养殖全程机械化试验示范项目(201377);农业部挤奶机关键部件试验平台研制项目(201206) 蒙牛乳业(集团)挤奶机系统检测评估项目(20150413)
【分类号】：S817.21
，
本文编号：2420963
[Abstract]:In order to study the milking effect of different vacuum degree of milking machine system, and to solve the problem that the vacuum degree of the milking machine is lack of scientific basis in the use of milking machine at present, 12 high-yield lactation cattle (7.4 卤0.4) t) per unit yield) were used as experimental objects in this paper. Somatic cell number (somatic cell count,SCC), the rate of wall thickness at the end of the papilla and the milking amount were taken as the parameters for evaluating the milking effect. When the vacuum degree of the system was 4446 and 48 kPa, respectively. The effect of system vacuum on the internal vacuum and cup mouth vacuum in different stages of milking process was studied, and the degree of influence of system vacuum on the evaluation index of milking effect was quantified. The results showed that when the system vacuum increased from 44 kPa to 48kPa, there was no significant difference in milking amount, milking time and average milk flow, but the logarithm of somatic cell number (P0.05) and the rate of change of papillary end wall thickness (P0.05) were significantly increased. The results show that the system vacuum of 44 kPa test milking machine is better than that of 46 or 48 kPa. This paper provides technical support for the optimization of system vacuum in the use of Chinese milking machines.
【作者单位】： 中国农业大学工学院;农业部农业机械试验鉴定总站;中国奶业协会;
【基金】：农业部农产品质量安全监管(生鲜乳质量安全监管)项目(201484);农业部农业技术试验示范专项经费(农机)项目-奶牛养殖全程机械化试验示范项目(201377);农业部挤奶机关键部件试验平台研制项目(201206) 蒙牛乳业(集团)挤奶机系统检测评估项目(20150413)
【分类号】：S817.21
，
本文编号：2420963
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