Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8502930 | Meat Science | 2018 | 8 Pages |
Abstract
Thirty six male goats grazing Caatinga native pasture were randomly assigned to 4 concentrate supplementation levels (0, 5, 10 and 15Â g/kg of body weight) and slaughtered after 120Â days. Longissimus muscle meat lipids were extracted and fractionated into neutral (NL) and polar (PL) lipids. Supplementation of grazing goats increased linearly (PÂ <Â 0.05) intramuscular fat (1 to 1.5% of meat) and NL (0.3 to 1% of meat) but decreased linearly (PÂ =Â 0.044) the PL (0.66 to 0.50% of meat). On NL, supplementation increased linearly (PÂ =Â 0.047) the proportion of c9-18:1 (31 to 40% of FA) with supplementation. On PL, supplementation reduced linearly (PÂ <Â 0.03) the dimethyl acetals, 18:3n-3 and most of long chain polyunsaturated FA (PUFA) proportions but increased linearly (PÂ <Â 0.001) the c9-18:1. Considering the total meat FA, supplementation led to an increase of the saturated and monounsaturated FA contents and a decrease of the long chain n-6 and n-3 PUFA contents.
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Authors
Natália L.O. Fonteles, Susana P. Alves, Marta Suely Madruga, Rita R.E. Queiroga, Albericio P. Andrade, Divan S. Silva, Amanda P. Leal, Rui J.B. Bessa, Ariosvaldo N. Medeiros,