Effect Of Ferrous Formic Acid,Copper Subcarbonate,Zinc Subcarbonate And Manganese Sulfate On Stability Of Vitamin

Uniform Design was adopted to investigate the infulence of ferrous formic acid, copper subcarbonate, zinc subcarbonate and manganese sulfate on the stability of vitamin A and micotinamide in 4% piglets premix under condition of 37℃during 60d. Two affiliated contrast were added (ContrastⅠwas sulfate group; ContrastⅡwas not contained ferrous,copper,manganese,zinc). The results indicated:1 Under the condition of 37℃, microelement contained in premix induced to extra-loss of vitamin A and micotinamide.2 Percent of loss of vitamin A in same dose subcarbonate group was lower than sulfate group and decreased respectively 37.3%,18.34%,8.44% at 15d,30d,45d. Percent of loss ofmicotinamide was decreased respectively 36.16%,11.21% at 15d,30d.3 Maximum percent of loss of vitamin A and micotinamide were 56.53% and 7.33% respectively in Subcarbonate with different combination. The contribution of Iron, znic, manganese and copper which all affect percent of loss of vitamin A was 19.23%,22.38%,19.17% and 39.22% respectively and Copper subcarbonate was the main factor.4 Percent of loss of vitamin A and micotinamide increased significantly when time was extended (P＜0.05). Percent of loss of vitamin A accounted 40.54% for whole stage in 0-15d. Percent of loss ofmicotinamide accounted 74.85% for whole stage in 0-30d. Significant correlation was not exist between ferrous formic acid, copper subcarbonate, zinc subcarbonate,manganese sulfate and micotinamide.5 The contribution of time,copper,znic,iron,manganese which all increase POV or decrease T-AOC was 57.82%,22.49%,9.79%,9.44%,0.46% or 71.84%,20.96%,3.10%,2.92%,1.19% respectively. The significant positive or negative correlation between copper subcarbonate and POV or T-AOC was found (P＜0.05).6 Single correlation analysis indicated that sulfate (P＜0.05) and moisture (P＜0.01) had significantly effect on the loss of VA and POV.7 Canonical correlation of 9 variables was studied. The results showed that the first coefficient of canonical correlation between no-microelement factors and stability factors of vitamin was highly significant before 15d (P＜0.05) or alter 15d (P＜0.01). Carbomate,sulfate and ph had higher effect on stability of vitamin than moisture and formate.To sum up, micreelement salt added premix induced to extra-loss of vitamin during store. Effect of formate and carbonate on vitamin was lower than that of sulfate. In the trace element the copper influence was biggest, the non-traceelement factors and the stability of vitamin has the remarkable relevance, the trace element salt through affects the stability of vitamin affects POV, AOC value in premix.