摘要
在20世纪后半期，发达国家的养猪方式变得越来越密集化。动物被圈养在贫瘠的、日益拥挤的环境中，母猪被囚禁在猪栏和铁隔栏里，这些体系，甚至剥夺了动物转身的自由。
During the second half of the 20th century, pigfarming became increasingly intensive in developedcountries. Animals were kept in barren and increasinglycrowded environments. Sows were confined in sow stallcages and farrowing crates, systems which don＇t evenallow the animals the freedom to turn around.
出处
《肉品卫生》
2005年第8期i016-i016,共1页
