<***N style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-bidi-font-size: 10.5pt" lang=EN-US>1<***N style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-bidi-font-size: 10.5pt">、**中毒<***N lang=EN-US>

<***N style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-bidi-font-size: 10.5pt" lang=EN-US>    <***N style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-bidi-font-size: 10.5pt">禽舍内的粪便、垫料和饲料等含氮有机物都会分解产生**。舍内如不及时清理，加之透风不顺畅，空气中**浓度升高引起中毒。出现口流唾液泡沫，呼吸道分泌物增多症状，可听到病鸡喘息声，并有明显的呼吸困难动作。<***N lang=EN-US>

<***N style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-bidi-font-size: 10.5pt" lang=EN-US>    2<***N style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-bidi-font-size: 10.5pt">、****中毒<***N lang=EN-US>

<***N style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-bidi-font-size: 10.5pt" lang=EN-US>    <***N style="FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-bidi-font-size: 10.5pt">冬季很多人采用煤炭给育雏室加温，容易引起****中毒。严重中毒时，鸡躁动不安、随之出现呼吸困难，运动失调，呆立，昏厥，嗜睡，头颈后伸，肌肉痉挛或惊厥，**窒息死亡。<***N lang=EN-US>