As bile has to be taken from black bears twice a day, one in the morning and the other in the evening, if they are raised in the open air, it will lower the efficiency.
2
有管取胆熊选用5头胆汁产量稳定、体况相近的黑熊，分期添加0.5%熊用复合绿色饲料添加剂进行了试验。
First, 5 bears that bile-powder with pipe, whose output were stable and body condition were approximate, were grouped by stage supplement 0.5% complex green additive for bear.
3
为了抽取胆汁，要在取胆黑熊的腹部通过手术制造一个长期不能愈合、深入腹腔直达胆囊的伤口。
In order to facilitate bile extraction, the bears undergo an invasive surgical procedure where a permanent wound is created in their gall bladder and abdominal wall.
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