Relative Bioavailability of Zinc-Methionine Chelate for Broilers Fed a Conventional Corn–Soybean Meal Diet

被引：0
作者：
Haiqing Suo
Lin Lu
Liyang Zhang
Xueyuan Zhang
Hua Li
Yufei Lu
Xugang Luo
机构：
[1] Chinese Academy of Agricultural Sciences,Mineral Nutrition Research Division, Institute of Animal Science
[2] Shandong Heshi Group Corporation Limited,undefined
来源：
Biological Trace Element Research | 2015年 / 165卷
关键词：
Zn-methionine chelate; Bioavailability; Broilers;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
An experiment was carried out to determine the bioavailability of the organic Zn-methionine chelate relative to inorganic Zn source (ZnSO4•7H2O) for broiler chicks fed a conventional corn–soybean meal diet. A total of 504 1-day-old Arbor Acres commercial male broiler chicks were randomly allotted to one of seven treatments in a completely randomized design involving a 2 × 3 factorial arrangement with three levels of added Zn (30, 60, or 90 mg of Zn/kg) and two Zn sources (Zn-methionine chelate and Zn sulfate) plus a Zn-unsupplemented control diet containing 29.2 mg of Zn/kg by analysis for an experimental phase of 21 days. Bone and pancreas were collected for testing Zn concentrations and pancreas metallothionein (MT) messenger RNA (mRNA) level at 7 or 21 days of age. The results showed that bone and pancreas Zn concentrations and MT mRNA level in pancreas increased linearly (P < 0.0001) at 7 or 21 days of age as added Zn level increased. Based on slope ratios from multiple linear regressions of the pancreas, MT mRNA level at 7 days and pancreas Zn concentration at 21 days on added Zn level and the bioavailability values of the Zn-methionine chelate relative to ZnSO4•7H2O (100 %) were 120 and 115 %, respectively (P > 0.22). The results indicated that the Zn from the Zn-methionine chelate was just as bioavailable as the Zn from Zn sulfate for broilers.
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页码：206 / 213
页数：7
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