Newcastle disease (nd) and Avian infectious bronchitis (IB) are both very important viral infectious diseases that endanger seriously the raising-chickens' industries in our country all along.
新城疫(ND)和传染性支气管炎(IB)一直是危害我国养禽业的两大重要病毒性传染病。
Newcastle disease (nd) and Avian infectious bronchitis (IB) are both very important viral infectious diseases that endanger seriously the raising-chickens' industries in our country all along.
新城疫(ND)和传染性支气管炎(IB)一直是危害我国养禽业的两大重要病毒性传染病。
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