title: Comparison on the fatty acid profiles of liver, subcutaneous fat and muscle from feedlot steers finished on diets supplemented with or without cinnamaldehyde or monensin.
abstract: BACKGROUND
  Cinnamaldehyde (CIN) is the main active component of cinnamon (Cinnamomum cassia) oil and has been tested as alternative feed additive in cattle production. Little information was available on the effect of dietary CIN in comparison to monensin (MO) on beef fatty acid (FA) profile. This study analyzed FA profiles of liver, subcutaneous fat and pars costalis diaphragmatis (PCD) muscle obtained from steers (n = 70) finished on diets: control, a barley grain-silage feedlot diet; 330 mg/head.day MO; and 400, 800 or 1600 mg/head.day CIN treatments.
  
  
  RESULTS
  Inclusion of MO or CIN did not affect total saturated, unsaturated, polyunsaturated FA and individual FA in the various tissues with exceptions that proportion of palmitic acid in PCD muscle was increased by 800 mg/steer.day CIN (P < 0.05). There were positive correlations (P < 0.05) on oleic, linoleic, conjugated linoleic acid (CLA)-c9,t11 and 18:1-t10 between the subcutaneous fat and PCD muscle, and on α-linolenic acid, CLA-c9,t11 and 18:1-t10 between PCD muscle and liver, whereas correlations on the FA between the subcutaneous fat and liver were not significant except for 18:1-t10 (P < 0.01).
  
  
  CONCLUSIONS
  The results indicate that the supplementation of CIN and MO to feedlot diet has limited effect on beef FA profiles.
authors.affiliation: Research Centre, Agriculture and Agri-Food Canada, Lethbridge, AB, Canada, T1J 4B1.
authors.forename: Maolong
authors.initials: M
authors.lastname: He
authors.forename: Jianjie
authors.initials: J
authors.lastname: Jia
authors.forename: Wenzhu
authors.initials: W
authors.lastname: Yang
mesh_terms: D000171:Acrolein / Q000031:analogs & derivatives*; D000821:Animal Feed; D000818:Animals; D002417:Cattle; D004032:Diet; D019587:Dietary Supplements; D005227:Fatty Acids / Q000032:analysis*; D006801:Humans; D044243:Linoleic Acids, Conjugated / Q000032:analysis; D008099:Liver / Q000737:chemistry; D008460:Meat / Q000032:analysis*; D008985:Monensin; D009132:Muscles / Q000737:chemistry; D050151:Subcutaneous Fat / Q000737:chemistry; D017962:alpha-Linolenic Acid / Q000032:analysis
chemical_list: D005227:Fatty Acids; D044243:Linoleic Acids, Conjugated; D017962:alpha-Linolenic Acid; D000171:Acrolein; D008985:Monensin; C012843:cinnamaldehyde
keywords: beef; cinnamaldehyde; fatty acids profile; feed additives; feedlot cattle; liver; monensin; subcutaneous fat