title: Performance, serum characteristics, carcase traits and lipid metabolism of broilers as affected by supplement of chromium picolinate.
abstract: 1. This study investigated the effects of dietary supplementation with chromium picolinate on the performance, serum and carcase traits and lipid metabolism of broilers. In trial 1, 120 1-day-old broilers with an equal number of males and females were assigned at random to 4 groups with 3 replicates. Four treatments with dietary supplements of 0 (control), 800, 1600 and 3200 microg/kg of chromium picolinate were used. In trial 2, 6-week-old broilers (20) were used to determine how supplements of 0, 200, 400 and 800 microg/kg chromium in an incubation medium influence their hepatocyte lipogenic capacity and adipocyte lipolysis, in vitro. 2. Dietary supplements of 1600 and 3200 microg/kg chromium in broiler diets significantly increased food consumption (P<0.05); 1600 microg/kg markedly improved weight gain (P<0.05); 1600 and 3200 microg/kg groups showed increased liver lipid content (P<0.05). However, the abdominal fat content tended to decrease in these 2 groups. 3. Dietary supplements of 1600 and 3200 microg/kg of chromium decreased serum glucose and nonesterified fatty acids (NEFA) concentrations while increasing serum phospholipid content (P<0.05). Insulin concentration decreased only in birds receiving 3200 ppb chromium (P<0.05). Serum triacylglycerol (TG) clearance rate in chromium-supplemented groups was markedly enhanced (P<0.05). 4. In addition, chromium supplemented groups had increased serum HDL contents and also reduced serum VLDL and LDL contents (P<0.05). 5. Trial 2 indicated that lipogenesis from [U-14C]glucose by isolated hepatocytes was significantly enhanced by 400 ppb chromium (P<0.05). 6. The results from this study demonstrate that a supplement of 1600 microg/kg of chromium picolinate in the ration influences the growth, carcase, serum traits and lipid metabolism of broilers.
authors.affiliation: Department of Animal Science, National Chiayi Institute of Technology, Luh Liau Li, Taiwan, ROC. tflien@rice.cit.edu.tw
authors.forename: T F
authors.initials: TF
authors.lastname: Lien
authors.forename: Y M
authors.initials: YM
authors.lastname: Horng
authors.forename: K H
authors.initials: KH
authors.lastname: Yang
mesh_terms: D017667:Adipocytes / Q000378:metabolism; D000821:Animal Feed; D000818:Animals; D001786:Blood Glucose / Q000378:metabolism; D002645:Chickens / Q000097:blood* / Q000378:metabolism; D019587:Dietary Supplements; D005230:Fatty Acids, Nonesterified / Q000097:blood; D005260:Female; D007502:Iron Chelating Agents / Q000494:pharmacology*; D008055:Lipids / Q000097:blood*; D008066:Lipolysis; D008297:Male; D010848:Picolinic Acids / Q000494:pharmacology*
chemical_list: D001786:Blood Glucose; D005230:Fatty Acids, Nonesterified; D007502:Iron Chelating Agents; D008055:Lipids; D010848:Picolinic Acids; C030614:picolinic acid