摘要:
对体外盐酸法测定的石粉溶解度与母鸡体内法测定结果进行了比较研究.体外盐酸法是在盐酸溶液浓度0.15mol/L,时间5min,振动频率(次/s)1.5、1.8、2.1、2.4条件下进行的,8种粒度(5~3.2mm,3.2~2.5mm,2.5~2mm,2~1.6mm,1.6~1.25mm,1.25~0.42mm,0.42~0.25mm,<0.35mm)石粉溶解度为:20.19%~23.12%,23.17%~26.06%,25.59%~28.24%,26.24%~29.74%,29.33%~32.83%,31.75%~34.26%,33.39%~36.01%,33.5%1~35.25%.母鸡食入石粉3、4、5、6 h后,8种粒度石粉溶解度结果为:19.46%~22.71%,20.52%~25.79%,26.60%~28.66%,29.72%~36.02%,30.45%~40.02%,35.56%~44.34%,48.82%~58.12%,54.12%~66.51%.母鸡食入石粉3 h后的石粉溶解度与在振动频率(次/s)1.5、1.8、2.1、2.4条件下测得的结果间有很高的相关关系.相关系数分别是:r1=0.8412,r2=0.9359,r3=0.8754,r4=0.8880,回归方程分别是:Y1=-25.9093+1.9749X1,Y2=-41.1947+2.5595X2,Y3=-39.8105+2.4194X3,Y4=-40.1651+2.3892X4,(Y=体内结果,X=体外结果)结果证明:体外盐酸法测定的石粉溶解度可以代替母鸡体内测定方法.