氨源、氮添加量、氨化时间和切碎长度对氨化稻草中氮沉积量、粗纤维含量和干物质体外消化率影响的研究

• Effect of ammonia sources, nitrogen inclution, ammoniation time and chopping length on nitrogen retention, crude fibre cotent and in vitro dry matter digestibility of ammoniated rice straw