NUTRITIONAL-EVALUATION OF COPPER-LYSINE AND ZINC-LYSINE COMPLEXES FOR CHICKS

被引:46
作者
AOYAGI, S
BAKER, DH
机构
[1] UNIV ILLINOIS,DEPT ANIM SCI,328 MUMFORD HALL,1301 W GREGORY DR,URBANA,IL 61801
[2] UNIV ILLINOIS,DIV NUTR SCI,URBANA,IL 61801
关键词
ZINC; COPPER; LYSINE; BIOAVAILABILITY; CHICKS;
D O I
10.3382/ps.0720165
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
Three chick experiments were conducted to evaluate two mineral-Lys complexed products, Cu-Lys and Zn-Lys. Relative bioavailability of Lys, Cu, and Zn were assessed separately using diets specifically deficient in each of these nutrients and by employing criteria that respond in a straight-line fashion to supplementation with the nutrient in question. Common-intercept multiple linear regression (slope-ratio) of weight gain, bile Cu concentration, and total tibia Zn regressed on supplemental intake of Lys, Cu, and Zn, respectively, were used to assess bioavailability values relative to the standards (i.e., L-Lys.HCI, CuSO4.5H2O, and ZnSO4.H2O). Lysine bioavailability of Cu-Lys and Zn-Lys were estimated as 89 and 109%, respectively, which were not different (P >.05) from 100%. Relative bioavailability of Cu in Cu-Lys and Zn in Zn-Lys were estimated as 120 and 106%, respectively. These values were not different (P >.05) from the standards, i.e., CuSO4.5H2O for Cu and ZnSO4.H2O for Zn.
引用
收藏
页码:165 / 171
页数:7
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