Light-based monitoring devices to assess range use by laying hens.
Light-based monitoring devices to assess range use by laying hens.
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基于光的监控设备，用于评估蛋鸡的牧场使用情况。
DOI：
10.1017/s1751731119002830
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Buijs S
中科院分区：
文献类型：
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作者：
Buijs S
进入户外牧场对蛋鸡有许多潜在的好处，但由于部分了解的因素，牧场的使用可能会很差。在商业鸡群中监测个体牧场使用的技术对于增加我们对这些因素的理解至关重要。直接观察单个牧场的使用是困难和耗时的，而自动监测目前依赖的设备很难在农场环境中使用，而不会影响牧场的使用。我们评估了一种新的小型、轻便和易于携带的基于光的监测系统的性能，方法是验证其输出与直接观测的结果。使用了6个商品房(2000只母鸡/栋)及其邻近的牧场，其中3个牧场配备了比其他牧场更多的结构(以确定盖子是否会影响监测精度)。在每个鸡舍中，14只母鸡在20、26、32、36和41周龄连续5个连续7~8天的连续监测周期中安装光监测装置。每分钟测定一次光线水平：如果安装在母鸡身上的设备上的读数超过室内光线水平，母鸡就被归类为室外。每只鸡每周直接观察5分钟。准确率(监测和直接观察一致的样本百分比)在结构较多和较少的范围内都很高，尽管后者略好(92%vs96%±1SEM，F1，19=5.2，P=0.034)。此外，准确率随着时间的推移而增加(26、32、36和41周的扫描电子显微镜观察的准确率分别为89%、94%、95%、98%±1sem，F3，19=3.2P=0.047)，可能是由于部分关闭通风口以维持室内温度而导致室内光照水平逐渐降低。当提供更多的靶场结构时，基于光的监测足够准确，以表明在户外花费的监测时间的比例更大(更多：67%，更少：56%，扫描电子显微镜：4，P<；0.0001)。这强调了在个人层面上研究射程使用的重要性。总而言之，我们的基于光照的监测系统可以准确地评估个体牧场的使用(尽管准确性在一定程度上受到房屋特征的影响)，并被用来表明覆盖可用性和个体特征都影响牧场使用。
Access to an outdoor range has many potential benefits for laying hens but range use can be poor due to factors only partly understood. Techniques to monitor individual range use within commercial flocks are crucial to increase our understanding of these factors. Direct observation of individual range use is difficult and time-consuming, and automatic monitoring currently relies on equipment that is difficult to use in an on-farm setting without itself influencing range use. We evaluated the performance of a novel small, light and readily portable light-based monitoring system by validating its output against direct observations. Six commercial houses (2000 hens/house) and their adjacent ranges were used, three of which were equipped with more structures on the range than the others (to determine whether cover would influence monitoring accuracy). In each house, 14 hens were equipped with light monitoring devices for 5 discrete monitoring cycles of 7 to 8 consecutive days (at 20, 26, 32, 36 and 41 weeks of age). Light levels were determined each minute: if the reading on the hen-mounted device exceeded indoor light levels, the hen was classified as outside. Focal hens were observed directly for 5 min/hen per week. Accuracy (% of samples where monitoring and direct observations were in agreement) was high both for ranges with more and with fewer structures, although slightly better for the latter (92% v. 96% ± 1 SEM, F1,19 = 5.2, P = 0.034). Furthermore, accuracy increased over time (89%, 94%, 95%, 98% ± 1 SEM for observations at 26, 32, 36 and 41 weeks, respectively, F3,19 = 3.2, P = 0.047), probably due to progressively reduced indoor light levels resulting from partial closing of ventilation openings to sustain indoor temperature. Light-based monitoring was sufficiently accurate to indicate a tendency for a greater percentage of monitored time spent outside when more range structures were provided (more: 67%, fewer: 56%, SEM: 4, , P < 0.0001). This emphasizes the importance of studying range use on an individual level. In conclusion, our light-based monitoring system can assess individual range use accurately (although accuracy was affected by house characteristics to some extent) and was used to show that both cover availability and individual characteristics affected range use.
Tierindividuelles Auslaufverhalten von Legehennen - RFID 技术自动化
DOI：
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发表时间：
2005
期刊：
影响因子：
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作者：
S. Thurner;G. Wendl
通讯作者：
G. Wendl
DOI：
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发表时间：
2010
期刊：
影响因子：
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作者：
S. Thurner;S. Maier;W. Icken;G. Wendl;R. Preisinger
通讯作者：
R. Preisinger
提供资源包可减少啄羽行为并改善散养蛋鸡场的放养分布
DOI：
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发表时间：
2017
期刊：
影响因子：
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作者：
I. Pettersson;C. Weeks;C. Nicol
通讯作者：
C. Nicol