Cel Fat in moderation is an essential component of the human diet. It provides energy, fat-soluble vitamins and essential fatty acids. It also enhances palatability by providing texture and flavour to foods. In the past few decades, however, the composition of beef fat has been maligned due to its high content of saturated fat and wide spread recommendations have been made to limit red meat consumption. Recently, trans fatty acids have also been a topic of interest as more information becomes available concerning the negative health effects of these fatty acids. In this sense, new regulations being enacted in Canada require food manufacturers to disclose the total trans fat content of the products and additional regulations are in development to limit trans fat consumption. Interestingly, however, not all fatty acids containing trans double bonds are unhealthy. Both conjugated linoleic acid (CLA) and vaccenic acid (trans11-18:1) have health promoting properties and can be enriched in beef. When feeding highly fermentable diets, however, CLA and vaccenic acid can be replaced by trans10-18:1 which can have negative health implications. The goal of the proposed work will be to provide information on how to modify and control the total fatty acid profile in beef, especially trans 18:1 and CLA isomers, and how ruminal microflora can influence their production when feeding different diets. In this sense, the fatty acid profile of pasture versus concentrate-fed animals will be compared initially, and then, different feed ingredients (i.e. buffer, dried distillers’ grains) will be incorporated into a typical feedlot diet (mostly barley) to study their influence on carcass composition, meat quality and fat composition. Helping to define the levels of dried distillers’ grains that can be included in livestock diets as an economical source of both feed and polyunsaturated fatty acids (18:2n-6) will also benefit the cattle and bioethanol industries and, in general, the environment. Dziedzina nauki agricultural sciencesagriculture, forestry, and fisheriesagriculturegrains and oilseedsnatural sciencesbiological sciencesbiochemistrybiomoleculeslipidsmedical and health scienceshealth sciencesnutritionagricultural sciencesanimal and dairy sciencedomestic animalsanimal husbandry Słowa kluczowe GC HPLC adipose tissue beef fatty fatty acids intramuscular fat Program(-y) FP7-PEOPLE - Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Temat(-y) PEOPLE-2007-4-1.IOF - Marie Curie Action: "International Outgoing Fellowships for Career Development" Zaproszenie do składania wniosków FP7-PEOPLE-2007-4-1-IOF Zobacz inne projekty w ramach tego zaproszenia System finansowania MC-IOF - International Outgoing Fellowships (IOF) Koordynator AGENCIA ESTATAL CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS Wkład UE € 212 975,88 Adres CALLE SERRANO 117 28006 Madrid Hiszpania Zobacz na mapie Region Comunidad de Madrid Comunidad de Madrid Madrid Rodzaj działalności Research Organisations Kontakt administracyjny Carlos Manuel Abad Ruiz (Mr.) Linki Kontakt z organizacją Opens in new window Strona internetowa Opens in new window Koszt całkowity Brak danych
