Institute;
of;
Animal;
Science;
and;
Veterinary;
Pharmaceutics,;
Chinese;
Academy;
of;
Agricultural;
Sciences;
(CAAS),;
Lanzhou;
730050,China;
Supervising,;
Inspecting;
and;
Testing;
Center;
for;
Animal;
Fiber,;
Fur,;
Leather;
and;
Products;
(Lanzhou);
of;
the;
Ministry;
of;
Agricul-ture,;
Lanzhou;
730050,;
China;
测定方法; 反刍动物; 降解率; 饲料蛋白质; 人工瘤胃; 尼龙袋法; 动物营养; 肠道;