Investigating the relationship between temperature and humidity conditions and broiler welfare in modified trailers during transport

研究运输过程中改装拖车中的温度和湿度条件与肉鸡福利之间的关系

• 批准号: 486856-2015
• 负责人: Crowe, Trever
• 金额: $ 0.91万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Engage Plus Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=585814
• 关键词: Investigating; relationship; between; temperature; humidity

The Canadian Food Inspection Agency (CFIA) is the regulating body that oversees food safety and animal welfare standards in slaughter plants. In the broiler industry (meat chickens), birds that do not survive transportation to the plant are referred to as Dead on Arrival or DOA. In order to ensure bird welfare standards, CFIA has set a 1% DOA limit per truck for broiler chickens. If the portion of birds arriving DOA in a single truck exceeds this limit, fines can be imposed following an investigation, with the amount of the fine being dependent on the severity of the infraction. Across Canada, ambient conditions become much more challenging to transport broiler chickens during winter months, and DOA rates tend to rise during November to March. Previous research work has demonstrated temperature and humidity heterogeneity within the loads with extremes in both parameters. Typically during winter transport, cold spots exist near the outsides and rear of the trailer, and hot spots present near the middle core of the trailer. The hypothesis is that the hot spots are caused by limited air penetration into the load and a lack of sufficient ventilation. A general lack of ventilation is believed to be the cause of high humidity levels, leading to condensation forming on cold surfaces and resultant wet birds, which are further challenged to maintain their core body temperature during colder ambient conditions. The typical winter conditions experienced in Saskatchewan and the need to transport broiler chickens year round represent a challenge. The general objective would be to remove moisture from within the load and, ideally, redistribute the heat. The objective of this study is to retrofit existing transportation trailers to facilitate more air exchange. Trailers will be outfitted with data loggers to record the temperature and humidity levels during the duration of transport from the farm to the plant. Retrofitted trailers will be run alongside traditional trailers for comparison. Additionally, bird response will be monitored by measuring the changes in bird core body temperatures, and distributions of dead birds within the trucks will be observed.

加拿大食品检验局（CFIA）是监管食品安全和动物安全的监管机构。 屠宰厂的福利标准。在肉鸡行业（肉鸡）， 运输到工厂被称为到达时死亡或DOA。为了确保鸟类福利标准， CFIA为肉鸡设定了每辆卡车1%的DOA限制。如果一只鸟到达DOA的部分 卡车超过这一限制，可以在调查后处以罚款，罚款金额为 取决于违规的严重程度。在整个加拿大，环境条件变得更具挑战性 在冬季运输肉鸡，DOA率往往在11月至3月上升。 以前的研究工作已经证明了负载内的温度和湿度异质性， 两个参数的极端。通常在冬季运输过程中，冷点存在于外部和后部附近， 拖车，以及拖车的中间核心附近存在的热点。假设这些热点是 这是由于有限的空气渗透到负载中以及缺乏足够的通风而引起的。普遍缺乏通风 被认为是高湿度水平的原因，导致在冷表面上形成冷凝， 由此产生的湿禽，其进一步受到挑战，以在较冷的环境中保持其核心体温， 条件萨斯喀彻温省典型的冬季条件和运输肉鸡的需要 鸡全年都是一个挑战。总的目标是从内部去除水分， 加载并理想地重新分配热量。本研究的目的是改造现有的运输拖车， 促进空气交换。拖车将配备数据记录器来记录温度和湿度 在从农场到工厂的运输过程中的水平。改装后的拖车将与 传统的拖车比较。此外，还将通过测量 观察鸟体核心体温和死鸟在卡车内的分布情况。