摘要
66只 3日龄天府肉鸭随机分为 6组 ,其中一组每日上、下午灌服蒸馏水作为试验对照组 ,另 5组每日早晨灌以 1/2 0DL50 (14 47mg/kg体重 )的氯化镉水溶液作试验组 ,试验Ⅰ -Ⅳ组每日下午分别再灌以 3 39、1 6 9、0 85、0 42mg/kg的硒 ,第Ⅴ组灌服蒸馏水。试验期 6周 ,其发病率和死亡率分别为 10 /11、9/11、10 /11、10 /11、11/11和 4/11、3/11、2 /11、4/11、7/11。镉中毒鸭表现为生长缓慢 ,贫血 (Hb、RBC和PCV显著降低 ) ,死前多呈现呼吸困难 ;尸体剖检和病理组织学变化主要是纤维素性心包膜炎、纤维素性肺浆膜炎、纤维素性肝包膜炎 ;组织矸脏和肾脏和镉含量与对照组比较极显著升高。灌服不同剂量的硒可降低镉的毒性 ,使生长受阻、贫血症状显著减轻 (P <0 0 5 ) ,死亡率降低 ;尸体剖检及病理组织学变化减轻 ,且可显著降低肝脏和肾脏中镉含量。
three day old briler ducks were divided into six groups random,onegroup was given distilled water per oral as the control group in every morning and afternoon,the others was given the 1/20 LD 50 water solution of cadmium chloride(14.47 mg/kg body weight)as the experiments groups in every morning,the experiment groups Ⅰ-Ⅳwere given3.39,1.69,0.85,0.42mg/kg body weight Selenium,the Ⅴ group was given the distilled water.In the six weeks experiment,morbidity and mortality of subacute Cd poisoning was 10/11,9/11.10/11,10/11,11/11 and 4/11,3/11,2/11,4/11,7/11 repectively.Chinic symptom of the affected ducks appeared as poor growth,anemia (Hb,RBC and PCV decreased significantly,P<0.05),dyspnea bfore death,the changes of autopsy and pathologic lesions was fibrinous epcarditis,fibrinous pneumaerositis,fibrinous perihepatitis.Cd content of the liver and kindey in the control group compared with the Cd adding expriment groups were significantly(P<0.05).The different dosages of Se could decrease the poisoning of the Cd,relieve the symptom of poor growth and anemia(P<0.05),the mortality and the pathalogic lesions was alleviated,and decrease significanttly the Cd content of the liver and kindey.
出处
《四川畜牧兽医》
2000年第3期29-30,共2页
Sichuan Animal & Veterinary Sciences
