蛋鸡穿戴式无线体温感知设备的开发及体温监测实验研究

发布时间：2017-12-27 11:39

本文关键词：蛋鸡穿戴式无线体温感知设备的开发及体温监测实验研究　出处：《浙江大学》2017年硕士论文　论文类型：学位论文

【摘要】：鸡体温是反映鸡健康的一项重要指标。这主要体现在两个方面:(1)了解鸡体温的变化规律有利于更好的了解鸡饮水、吃食的生活习性,尤其对研究鸡产蛋期间各种行为有非常重要的作用。(2)鸡是恒温动物,依靠产热、隔热、散热维持体温的恒定,体温变化表征鸡的健康状态。目前我国流行的鸡的常见疫病均表现出体温异常变化的特征,因此通过监测鸡体温变化,预测鸡生病、死亡对大型养殖场预防疫病传播尤为重要,同时也为我们更多更好地了解鸡的日常行为提供了数据支持。基于以上原因,本文开发了一种蛋鸡穿戴式无线体温感知设备,并基于无线体温感知设备开展了对于海兰褐蛋鸡体温监测的一系列实验研究,从而找出蛋鸡在日常行为下体温变化及鸡生病、死亡前后的温度变化规律。本文主要研究内容包括:(一)针对现有无线通讯方式不能满足养殖场现场应用问题及养殖对象的特殊性问题,开发了低功耗、小体积的可穿戴传感器终端节点及无线+有线相结合的传输系统。系统由体温节点、汇聚节点、路由节点、集中器节点及上位机控制软件五部分组成。(二)采用设计的系统进行了蛋鸡不同部位体温测试的对比试验,包括绑定在鸡腿上、贴近鸡胸、及插入鸡的泄殖腔,发现鸡翼下贴近鸡胸为最适宜的位置。因为传感器固定在鸡翼下既能避免鸡的啄食还能贴近皮肤表面,准确、稳定的监测体温,同时对鸡的日常活动干扰小。(三)研究了蛋鸡产蛋期间日常活动的温度变化及鸡生病、死亡前后的温度变化特征。(1)通过与环境温度对比发现蛋鸡体温变化与环境温度变化有很大相关性,日间环境温度与鸡体温呈现显著性相关(置信度为99%),夜间环境温度也与鸡体温呈现显著性相关(置信度为99%)。(2)蛋鸡产蛋后会有温度特征峰出现。产蛋的特征峰平均持续时长64 min,平均上升0.28℃,升温变化慢,降温变化较升温变化快。(3)探究蛋鸡饮水、吃食与体温变化关系,发现连续的吃食具有使体温上升和减缓体温下降的作用。(4)实验后期采用夜晚不关窗的方式加大昼夜温差,使通风量增加,发现分别有鸡生病和死亡。实验数据显示患有疾病的蛋鸡,体温会在一定时间段连续偏高。蛋鸡死亡前后会有超过公认警戒温度42℃且持续升温,一段时间后快速下降至室温的温度变化,养殖中可将鸡体温变化作为判别生病、死亡的依据之一。(四)将无线体温感知设备应用到大型养殖场进行实际养殖环境下的测试,在群体饲养、笼养条件下,鸡对无线体温传感器节点表现出了很好的适应性,当鸡饲养在正常温度条件下的鸡舍时,鸡体温在39℃至41℃区间变化,表现出与测试条件下一样的昼夜变化节律及与环境温度变化的显著相关性。
[Abstract]:Chicken body temperature is an important index to reflect the health of chicken. This is mainly reflected in two aspects: (1) understanding the changing rule of chicken body temperature is beneficial to better understand the life habits of chicken drinking and eating, especially for studying various behaviors of laying hens during the laying period. (2) chicken is a constant temperature animal, relying on heat production, heat insulation, heat dissipation to maintain the constant temperature, temperature changes to characterize the health of the chicken. At present the common disease epidemic in China chicken showed characteristic changes in body temperature, therefore by monitoring the temperature change of chicken, chicken predict illness and death is particularly important for large farms to prevent the spread of disease, but also provide us more and better understanding of chicken's daily behavior provides data support. Based on the above reasons, this paper developed a wearable wireless temperature sensing device layer, and based on the wireless temperature sensing device to carry out a series of experiments for Hyline layers temperature monitoring, so as to find out the temperature variation of temperature in the daily behavior of hens and chickens, dead and sick. The main contents of this paper include: (1) aiming at the problem that the existing wireless communication methods can not meet the field application problems and the particularity of the breeding objects, a low power consumption and small volume wearable sensor terminal node and a wireless and cable transmission system are developed. The system is composed of five parts: body temperature node, converging node, routing node, concentrator node and host computer control software. (two) compared with hens in different parts of the temperature measurement system design, including the binding in the legs, chicken, and chicken to insert the cloaca, found close to the chicken chicken wings is the most suitable location. Because the sensor is fixed under the chicken wings, which can avoid the pecking of chickens and close to the skin surface. It can monitor the body temperature accurately and stably, and has little interference with the daily activities of chickens. (three) the temperature changes of daily activities during laying of laying hens and the characteristics of temperature changes before and after the illness and death of the chickens were studied. (1) by comparing with the ambient temperature, it is found that there is a great correlation between the temperature change of the laying hens and the change of ambient temperature. The daytime environment temperature is significantly correlated with the body temperature of chicken (the confidence level is 99%), and the night temperature is also significantly correlated with the body temperature of chicken (the confidence level is 99%). (2) there will be a temperature characteristic peak in laying hens after laying eggs. The average length of the egg production peak lasted 64 min, the average increase was 0.28 degrees C, the temperature change was slow, and the temperature change was faster than the temperature. (3) the relationship between drinking and eating hens and temperature changes, continuous eating utensils have found the temperature rise and slow drop in body temperature effect. (4) at the late stage of the experiment, the temperature difference between the day and night was increased by night without the window, and the amount of ventilation was increased, and the chickens were ill and died respectively. The experimental data showed that the chicken with the disease was in a continuous high temperature for a certain period of time. Before and after the death of the hens, there will be more than 42 days of the warning temperature and a constant temperature increase. After a period of time, the temperature changes rapidly down to room temperature. The chicken body temperature change can be used as a basis for judging the illness and death. (four) the wireless temperature sensing device applied to large farms for practical breeding environment test, in the group feeding, captive conditions, chicken of wireless temperature sensor nodes showed good adaptability when feeding in normal temperature conditions when the temperature changes in the chicken coop, 39 to 41 DEG C the interval, and test conditions showed significant correlation of diurnal rhythm of the same and the change of environmental temperature.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP212.9;S831

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