title: Efficacy of dietary chromium (III) supplementation on tissue chromium deposition in finishing pigs.
abstract: The study was conducted to evaluate the efficacy of different forms of trivalent chromium (Cr) supplementation on tissue chromium deposition in finishing pigs. A total of 96 pigs with an initial average body mass 65.57±1.05 kg were blocked by body mass and randomly assigned to four treatments with three replicates. Pigs were offered one of four diets including a control diet or the control diet supplemented with 200 μg/kg chromium from either chromium chloride (CrCl(3)), chromium picolinate (CrPic) or chromium nanocomposite (CrNano) for 40 days. During the trial, all pigs were given free access to feed and water. After feeding trial, eight pigs from each treatment were slaughtered for samples collection. The results showed that supplemental CrNano increased Cr content in blood, longissimus muscle, heart, liver, kidney, jejunum, and ileum (P<0.05). Supplemental Cr from three sources increased Cr excretion from all feces (P<0.05). Urinary Cr excretion was increased by CrNano or CrPic supplementation significantly. These results suggested that chromium nanocomposite exhibited more effective on tissue Cr deposition in pigs, which indicated higher absorption compared with CrCl(3) and CrPic.
authors.affiliation: Animal Science College, Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Zhejiang University, Hangzhou 310058, China. wangmq@zju.edu.cn
authors.forename: Min-Qi
authors.initials: MQ
authors.lastname: Wang
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.forename: Yu-Dan
authors.initials: YD
authors.lastname: He
authors.forename: Chao
authors.initials: C
authors.lastname: Wang
authors.forename: Wen-Jing
authors.initials: WJ
authors.lastname: Tao
authors.forename: Yong-Jie
authors.initials: YJ
authors.lastname: Du
mesh_terms: D000818:Animals; D002712:Chlorides / Q000008:administration & dosage / Q000378:metabolism; D002857:Chromium / Q000008:administration & dosage* / Q000378:metabolism*; D017608:Chromium Compounds / Q000008:administration & dosage / Q000378:metabolism; D019587:Dietary Supplements; D010848:Picolinic Acids / Q000008:administration & dosage / Q000378:metabolism; D013552:Swine
chemical_list: D002712:Chlorides; D017608:Chromium Compounds; D010848:Picolinic Acids; D002857:Chromium; C017133:chromous chloride; C030614:picolinic acid