Animal Nutrition Institute, Sichuan Agricultural University, and Key Laboratory of Education Ministry, Ya'an 625014, P. R. China.
Poult Sci. 2011 Aug;90(8):1782-90. doi: 10.3382/ps.2010-01215.
The objective of this study was to investigate the effects of dietary supplemental Zn on growth performance, carcass traits, and meat quality of broilers. Dietary treatments included the corn-soybean meal-based diet (control) and the basal diet supplemented with 60, 120, or 180 mg of Zn/kg as ZnSO(4), Zn amino acid A, Zn proteinate B, or Zn proteinate A. The results showed that birds fed diets supplemented with Zn had higher ADFI, ADG, and percentage of eviscerated yield than birds fed the control diet. Supplemental Zn significantly increased the redness value in breast muscle and pH values in thigh muscle, decreased shear force in thigh muscle, and decreased drip loss in breast and thigh muscle. The DM and intramuscular fat contents of the breast muscle in broilers fed diets with supplemental Zn were higher than those of the control. Results from this study indicated that Zn could promote growth and improve production performance of broilers independent of Zn source.
本研究旨在探讨饲粮中添加锌对肉鸡生长性能、胴体特性和肉质的影响。饲粮处理包括玉米-豆粕基础饲粮（对照组）和基础饲粮添加 60、120 或 180mg/kg 硫酸锌、氨基酸锌、蛋白锌 B 或蛋白锌 A。结果表明，饲粮添加锌组的肉鸡采食量、平均日增重和屠体率均高于对照组。饲粮添加锌显著提高了胸肌红度值和腿肌 pH 值，降低了腿肌剪切力，减少了胸肌和腿肌滴水损失。饲粮添加锌组的胸肌干物质和肌内脂肪含量高于对照组。本研究结果表明，锌可促进肉鸡生长，提高生产性能，与锌源无关。
