摘要
阐明和龙膨润土的毒性和饲养效果，进行急性毒性试验结果ＬＤ５０＞２０ｇ／ｋｇ，说明属实际无毒类物质；小白鼠精子畸形试验表明，１．０％、３．０％添加组精子畸形率呈阴性（Ｐ＞０．０５），５．０％添加组呈阳性（Ｐ＜０．０１）；黄牛基础日粮中添加１．０％、３．０％、５．０％膨润土饲喂后，试验组日增重分别比对照组提高了２６．１５％、４７．６９％、１３．８５％，差异显著（Ｐ＜０．０５）；ＣＰ消化率分别比对照组提高了７．７１％、８．５８％、６．７７％；ＣＦ消化率分别提高了９．３３％、１３．７１％、７．２３％，差异显著（Ｐ＜０．０５）。
Cavies were used in toxicology experiment and yellow calves in daily gain and digestibility experiment.It belongs to unpoisonous materials evidented in acute toxicity experiment(LD50>20g/kg).Bentonite content in basic ration 1.0% 、2.0% 、3.0%: The pathological variance in the tissue was not found and the rate of sperms malformation was negative (P>0.05).Bentonite content in basic ration 5.0%:Granular variance of tissue was found and the rate of sperms malformation was positive(P<0.01).Both daily gain and digestibility of CF and CP of test cavles were significant (P<0.05).The safety and effectiveness of daily gain of feeding Bentonite to animals is evidently.
关键词
和龙膨润土
黄牛
毒性
精子畸形
日增重
消化率
Bentonite
Cavy
yellow calf
Acute toxicity
Sperms malformation
Gain
Digestibility.
