Lipid profile of lamb meat from different genotypes submitted to diets with different energy levels

Revista Brasileira de Zootecnia

Roberto Germano Costa²  Ana Sancha Malveira Batista¹  Paulo Sérgio De Azevedo¹  Rita De Cássia Ramos Do Egypto Queiroga¹  Marta Suely Madruga¹  José Teodorico De Araújo Filho¹ 

[1] ,Universidade Federal da Paraíba CFT Departamento de AgropecuáriaBananeiras Paraíba ,Brasil

关键词: cholesterol;    Dorper;    fatty acids;    Morada Nova;    phospholipids;    Santa Inez;    ácidos graxos;    colesterol;    Dorper;    fosfolipídios;    Morada Nova;    Santa Inês;   

DOI  :  10.1590/S1516-35982009000300019

来源: SciELO

【 摘 要 】

To assess the influence of genotype and diets with different energy levels on the lipid profile of sheep meat, 54 lambs were used (18 animals from each genotype: Morada Nova, Santa Inez and ½Dorper + ½Santa Inez crossbred), distributed in a completely randomized experimental design in a 3 × 2 factorial arragement (three genotypes and two diets). The animals were submitted to two diets, 2.5 Mcal ME/kg DM and 3.0 Mcal ME/kg DM, receiving feed and water to reach the desired average live weight of 30 kg, when they were slaughtered. Total lipids, cholesterol, phospholipids and fatty acids profile of the Longissimus muscle were assessed. Diet and genotype did not influence the total lipids, cholesterol and phospholipids contents. The diet with the highest energy value presented higher values for the concentration of C12:0, C14:0, C18:0, C19:0, C22:0 acids and monounsaturated fatty acids (MUFA) in relation to that with the lowest energy value. However, for the concentrations of C15:0 acid and polyunsaturated fatty acids (PUFA), the highest values were recorded for diet with the lowest energy value. Genotype and diet influenced significantly the MUFA concentration, in which ½Dorper + ½Santa Inez crossbred genotype and diet with 2.5 Mcal ME/kg DM showed the highest values. Genotype influenced the saturated fatty acids (SFA) concentration, with ½Dorper + ½Santa Inez crossbred obtaining the lowest mean, behavior similar to that observed for PUFA concentrations. Desirable fatty acids (DFA), atherogenicity index as well as PUFA:SFA, MUFA:SFA, (C18:0 + C18:1):C16:0 ratios were influenced by diet and genotype. ½Dorper + ½Santa Inez crossbred and diet with 2.5 Mcal ME/kg DM obtained the best results.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License