Effect of environmental conditions during transport on chick weight loss and mortality.
Effect of environmental conditions during transport on chick weight loss and mortality.
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DOI：
10.1016/j.psj.2020.10.003
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发表时间：
2021-01
期刊：
影响因子：
4.4
通讯作者：
Manteca X
中科院分区：
文献类型：
--
作者：
Yerpes M;Llonch P;Manteca X
本研究有两个目的：第一个是分析运输对运输期间体重减轻和死亡率以及第一周死亡率的可能影响。第二是监测环境条件（即，温度、湿度等）的变化，并对日龄雏鸡产生影响。探测设备安装在西班牙一家家禽公司的卡车上，包括2017年5月至11月期间在商业条件下进行的总共66次旅行。收集的基于动物的指标包括BW（运输前和运输后）、运输过程中的死亡率、出生后第一周的死亡率，并与一系列环境变量进行对比，这些环境变量包括每次运输的空气温度、RH和二氧化碳（CO2）大气浓度、每次运输的日龄雏鸡数量（%）、运输持续时间（h）、装载区内的区域（区域1，靠近机舱;区域2，在中心点;区域3，靠近后门），高度（1，最高; 2，中等;和3，底部），月（5月至11月），停留次数，旅行期间停留的类型（农场停车和司机停车）、开始旅程的时间以及小鸡的其他内在因素（性别、品种[Ross和Cobb]、种鸡群龄[周]和鸡蛋储存日）。由于数据库包括随机因素、纵向数据和重复测量，因此使用多变量模型分析数据。结果表明，鸡的失重率与行程时间和相对湿度呈正相关。没有发现环境变量对运输过程中死亡率的影响。然而，雏鸡死亡率在第一周的生活与日龄雏鸡装载每程和雏鸡性别的百分比。总之，由于运输过程中的环境异质性和环境对运输过程中的雏鸡体重和出生后第一周的死亡率的影响，迫切需要改进一日龄雏鸡运输的空调和通风系统，使其具有更大的环境同质性。
The present study had 2 objectives: the first was to analyze the possible impact of transport on weight loss and mortality during transport, and first-week mortality. The second was to monitor the environmental condition (i.e., temperature, humidity, and so on) variability during transport with an effect on day-old chicks. Probe equipment was installed in a truck of a poultry company from Spain, including a total of 66 journeys made in commercial conditions between May and November 2017. Animal-based measures collected included BW (before and after transport), mortality during transport, mortality during the first week of life, which were contrasted against a series of environmental variables including air temperature, RH, and carbon dioxide (CO2) atmospheric concentration for every journey, number of day-old chicks (%) per journey, transport duration (h), zones inside the loading area (zone 1, near to the cabin; zone 2, in the central point; and zone 3, close to the back doors), height (1, top; 2, medium; and 3, bottom), mo (May to November), number of stops, type of stop during journey (farm stops and driver stops), time to start the journey, as well as other intrinsic factors of chicks (gender, breed [Ross and Cobb], breeder flock age [wk] and egg storage day). Because the database included random factors, longitudinal data, and repeated measures, a multivariate model was used to analyze the data. The results showed that chick weight loss was positively associated with journey duration and RH. No effect of environmental variables was found on mortality during transport. However, chick mortality during the first week of life was related with the percentage of day-old chicks loaded per journey and chick gender. In conclusion, owing to the environmental heterogeneity during transport and the effect of the environment on chick weight during transport and mortality at first week of life, there is an urgent need to refine the air-conditioning and ventilation systems of day-old chick transport toward a greater environmental homogeneity.
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影响因子：
4.4
作者：
Lin, H;Zhang, HF;Decuypere, E
通讯作者：
Decuypere, E
影响因子：
4.4
作者：
Batal, AB;Parsons, CM
通讯作者：
Parsons, CM
DOI：
10.1590/1809-4430-eng.agric.v36n4p593-603/2016
发表时间：
2016-08-01
期刊：
Engenharia Agrícola
影响因子：
--
作者：
NAZARENO, AÉRICA C.;SILVA, IRAN J. O. DA;FERNANDES, DANIELLE P. B.
通讯作者：
FERNANDES, DANIELLE P. B.
DOI：
10.1590/1807-1929/agriambi.v19n2p134-139
发表时间：
2015-02-01
期刊：
Revista Brasileira de Engenharia Agrícola e Ambiental
影响因子：
--
作者：
Nazareno, Aérica C.;Silva, Iran J. O. da;Santos, Rofson F. S.
通讯作者：
Santos, Rofson F. S.
影响因子：
3.3
作者：
通讯作者：
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