title: Effect of grape seed extract, Cistus ladanifer L., and vegetable oil supplementation on fatty acid composition of abomasal digesta and intramuscular fat of lambs.
abstract: Thirty-six lambs were used in a 6 week experiment to evaluate the effect of vegetable oil blend supplementation (0 vs 60 g/kg of dry matter (DM)) and two dietary condensed tannin sources, grape seed extract (0 vs 25 g/kg of DM) and Cistus ladanifer L. (0 vs 250 g/kg of DM), on fatty acid (FA) composition of abomasal digesta and intramuscular polar and neutral lipids. Grape seed extract did not affect the FA profile of abomasal digesta or muscle lipid fractions. C. ladanifer had a minor effect in lambs fed diets with no oil but greatly changed the abomasal and muscle FA profiles in oil-supplemented lambs. It decreased 18:0 and increased 18:1 trans-11 in abomasal digesta and increased 18:1 trans-11 and 18:2 cis-9,trans-11 (P = 0.062) in muscle neutral lipids, resulting in an important enrichment of meat 18:2 cis-9,trans-11 when compared to other oil-supplemented diets (19.2 vs 41.7 mg/100 g of muscle).
authors.affiliation: Unidade de Investigação em Produção Animal, INRB, Fonte Boa, 2005-048 Vale de Santarém, Portugal.
authors.forename: Eliana
authors.initials: E
authors.lastname: Jerónimo
authors.forename: Susana P
authors.initials: SP
authors.lastname: Alves
authors.forename: Maria T P
authors.initials: MT
authors.lastname: Dentinho
authors.forename: Susana V
authors.initials: SV
authors.lastname: Martins
authors.forename: José A M
authors.initials: JA
authors.lastname: Prates
authors.forename: Valentina
authors.initials: V
authors.lastname: Vasta
authors.forename: José
authors.initials: J
authors.lastname: Santos-Silva
authors.forename: Rui J B
authors.initials: RJ
authors.lastname: Bessa
mesh_terms: D000018:Abomasum / Q000378:metabolism*; D000273:Adipose Tissue / Q000737:chemistry; D000818:Animals; D029758:Cistus / Q000737:chemistry*; D004032:Diet; D019587:Dietary Supplements; D004063:Digestion; D005227:Fatty Acids / Q000008:administration & dosage / Q000032:analysis*; D056604:Grape Seed Extract / Q000008:administration & dosage*; D008297:Male; D009132:Muscles / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D010938:Plant Oils / Q000008:administration & dosage*; D018547:Plant Stems / Q000737:chemistry; D044945:Proanthocyanidins / Q000008:administration & dosage; D012756:Sheep / Q000254:growth & development / Q000378:metabolism*
chemical_list: D005227:Fatty Acids; D056604:Grape Seed Extract; D010938:Plant Oils; D044945:Proanthocyanidins