These developments have led the poultry industry and the associated feed industry to scale up rapidly, to concentrate themselves close to input sources or final markets, and to integrate vertically.
这些进展促使家禽业和相关的饲料产业迅速增长，与投入品源头或终端市场建立密切的联系，并实现垂直整合。
2
The development and transfer of feed, slaughter and processing technologies have increased safety and efficiency, but favour large-scale units rather than small-scale producers.
饲养、屠宰和加工技术的开发和转让提高了安全性和效率，但更有利于大规模的养殖场而不是小规模的养殖者。
3
We have nothing against small scale, low output, farming systems but to suppose this is a model which will feed the world's growing population is disingenuous.