Effects of supplemental zinc source and level on growth performance, carcass traits, and meat quality of broilers
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 com-soybean meal-based diet (control) and the basal diet supplemented with 60, 120, or 180 mg of Zn/kg as ZnSO4, 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.
zinc growth performance carcass trait meat quality broiler
Z.H.Liu L.Lu S.F.Li L.Y.Zhang L.Xi K.Y.Zhang X.G.Luo
Animal Nutrition Institute, Sichuan Agricultural University, and Key Laboratory of Education Ministr Mineral Nutrition Research Division, Institute of Animal Science, Chinese Academy of Agricultural Sc Hebei Vocation-technical Teachers College, Changli 066600, P.R.China Department of Animal Science, North Carolina State University, Raleigh 27695
国内会议
成都
英文
50-58
2013-04-18（万方平台首次上网日期，不代表论文的发表时间）