ANALYSIS OF RELATIONSHIPS BETWEEN ZN SUPP LY, ZN AND SOME OTHER CHOSEN NUTRIENTS RETENTION OF YOUNG-PIGS

The evaluation of regression and correlation analysis founded on the b asis of results of 6 balance trials was used to describe the effect of chosen indicators on zinc digestibility and zinc retention. The follo wing models of equations for relationship between zinc and iron was ch osen as the most acceptable: y=-0.304 +1, 822x - 0,071x(2) (y=Fe diges tion in mg/W-0,W-75 x=Zn digestion in mg/W-0,W-75; I-k=0,690); y=-0,45 7 +1,859x -0,076x(2) (y= Fe deposition in mg/W-0,W-75 x=Zn digestion i n mg/W-0,W-75; I-k=0,669). Relationship between mangan and zinc was ex pressed by equation: y=0,930 +0,172x -0,001x(2) (y=Mn digestion in mg/ W-0,W-75, x=Zn digestion in mg/W-0,W-75; I-k=0,431); and between zinc and potassium by equation: y=221, 1 -705,8x +618, 6x(2) (y= Zn retenti on in %; x=K intake in g/W-0,W-75; I-k=0,405). The main effect on zinc deposition in the models of multiple regression was found by the indi cators of zinc intake. The whole variability of zinc deposition was in fluenced by the zinc intake more than by 70%. Besides the effect of zi nc intake, the effect of calcium intake on the zinc deposition was obv ious. This indicator influenced the whole variability from 7,35 to 27, 63% by the models of multiple regression.