养猪场非生产天数(NPD)分析数据
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非生产天数（NPD）是影响母猪年产胎次的一大指标，也是猪场实现降本增效的核心路径。通过量化分析NPD和个类型占比数据，猪场可精准识别生产瓶颈并制定改进策略。根据数据分析从而优化养殖方式，改进养殖环境方法等，同时也为产业内的养殖企业提高产品质量和生产效率提供技术支持和决策依据。促进养殖产业向科学、高效、模式可移植的方向发展。1.数据来源：企业内部智能猪场管理平台，2.数据采集：企业通过智能猪场管理平台采集在生产中产生的数据，并对数据进行清洗，去除异常值、消除重复数据，确保数据的准确性 3.算法公式：非生产天数(NPD)=统计期内的本时间段非生产天数之和/统计期自然天数/统计期母猪日均存栏*365，根据非生产天数类型来统计各类型占比，失配占比=失配的天数/非生产总天数，妊娠占比=妊娠总天数/非生产总天数，断奶占比=断奶总天数/非生产总天数，空怀占比=空怀总天数/非生产总天数，空胎占比=空胎总天数/非生产总天数，流产占比=流产总天数/非生产总天数，淘汰未离场占比=淘汰未离场总天数/非生产总天数。
Non-productive days (NPD) is a critical indicator affecting the annual number of parities per sow, and a core pathway for swine farms to reduce costs and increase efficiency. By quantitatively analyzing NPD and the proportion data of various NPD categories, swine farms can accurately identify production bottlenecks and develop targeted improvement strategies. Leveraging such data analysis helps optimize breeding methods and breeding environment management measures, while providing technical support and decision-making foundations for breeding enterprises in the industry to enhance product quality and production efficiency, thereby advancing the breeding industry toward a scientific, efficient and replicable model development path. 1. Data Source: Internal intelligent swine farm management platform of the enterprise. 2. Data Collection: The enterprise collects on-site production data via the intelligent swine farm management platform, and conducts data cleaning by removing outliers and eliminating duplicate records to ensure data accuracy. 3. Algorithm Formula: Non-productive Days (NPD) = (Sum of non-productive days of each period within the statistical period) / (Natural days of the statistical period) / (Average daily sow inventory during the statistical period) × 365. Proportions of different NPD categories are calculated as follows: Mismatch proportion = Days of mismatch / Total non-productive days Gestation proportion = Total gestation days / Total non-productive days Weaning proportion = Total weaning days / Total non-productive days Non-pregnancy proportion = Total non-pregnancy days / Total non-productive days Empty farrowing proportion = Total empty farrowing days / Total non-productive days Abortion proportion = Total abortion days / Total non-productive days Proportion of culled sows not yet removed = Total days of culled sows not yet removed / Total non-productive days
