传送带运载猪的可行性 可降低猪的应激反应

A recent study was conducted in hopes of minimizing stress when transporting hogs

最近一项研究关于减少运输过程中猪的应激反应。

A recent a study to determine if using a conveyor to load pigs into the top deck of a straight deck trailer could lower the stress to which pigs and handlers endure during transportation concluded that while feasible, there was little advantage. The study, conducted by Donald C. Lay Jr., USDA Agricultural Research Service, determined that swine producers can choose to load pigs with traditional ramps or a mechanical conveyor without decreasing animal welfare.

Based on behavior of the pigs they had similar experiences in both treatments. Conveying the pigs into the trailer did not decrease their stress or increase it. Total time to load was the same. No change was seen to the handlers either.

最近一项研究表明，使用运输机把猪运载到拖车板上，可以降低猪和操作人员在运输过程中应激反应，此方案是可行的，但并没有什么优势。这项研究的主持人美国农业研究院的唐纳德博士指出，养殖者可以使用传统的斜坡道或机械运输机运载猪，而不影响动物福利。

依据猪的行为学判断，他们的得出相同的结论，把猪运送到拖车里，不会减少或增加猪群应激反应，运载时间是相同的，操作处理程序也没有什么改变。

Process of the study

研究过程

The point of the study was to reduce stress to animals during handling and their handlers by self-movement of pigs during loading and unloading.

Weaned pigs and nursery pigs were the two types of groups used to test the idea. Weaned pigs were moved in groups of 20 while nursery pigs were moved in groups of 10.

Pigs used as a control group were moved up the ramp without the conveyor belt moving. Controlled grouped pigs were moved using the conveyor in-motion. Heart rate of two pigs per group, as well as the handlers’, were recorded during loading.

Pigs were held in the trailer for 30 minutes so their heart rate could be recorded. After, they were unloaded and moved to a holding pen for an additional 30 minutes so their heart rate could again be recorded.

本研究的目的是降低猪在装载或卸载过程中的应激反应，选用断奶仔猪和育肥猪为试验组，断奶仔猪20头一组，育肥猪10头一组。对照组的在斜坡上移动没有传送带，试验组的猪用运输机运载，运输过程中，记录每组测两头猪的心率和处理过程。猪需要在拖车里呆30分钟可记录心率，之后卸载至候宰栏30分钟记录心率。

Pigs are often known for being high stress, and limiting this issue at the time of transportation is almost impossible. Eliminating transportation is inevitable because weaned pigs and nursery pigs need to be moved to growing facilities and then finished pigs need to be moved to the harvest plant.

Intense handling that can happen during movement of hogs might causes stress on operation managers along with other livestock handlers and can create an abundance of stress in the hogs that may not otherwise occur. Use of a conveyor belt may reduce the stress level in both the animal and the handler, therefore making the process much easier.

猪的应激反应明显，想要在运输时间上去解决这个问题是不可能的，因为运输问题是不可避免的，断奶仔猪和育肥猪需要转栏到生长猪舍，而育成猪需要运输至屠宰间。

运输过程中管理者和其他畜禽员工操作行为过激，会导致猪的应激反应，并引起整个猪群的应激反应，使用传送带会降低猪群和操作人员的应激水平，并且操作更简单易行。

传送带运载猪的可行性 可降低猪的应激反应