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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Enriquecimento da carne suína com blends de óleos: estudo dos parâmetros sanguíneos, perfil dos ácidos graxos e índices trombogênicos e aterogênicos / Enrichment of swine flesh with oil blends: study of blood parameters, profile of fatty acids and trombogenic and aterogenic indexes

Silva, Natália Rocha 08 March 2018 (has links)
Submitted by Automação e Estatística (sst@bczm.ufrn.br) on 2018-07-03T11:30:10Z No. of bitstreams: 1 NataliaRochaSilva_DISSERT.pdf: 767991 bytes, checksum: 0bd1cbab454c6d9c2f4765971c6e1adb (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2018-07-09T14:37:00Z (GMT) No. of bitstreams: 1 NataliaRochaSilva_DISSERT.pdf: 767991 bytes, checksum: 0bd1cbab454c6d9c2f4765971c6e1adb (MD5) / Made available in DSpace on 2018-07-09T14:37:00Z (GMT). No. of bitstreams: 1 NataliaRochaSilva_DISSERT.pdf: 767991 bytes, checksum: 0bd1cbab454c6d9c2f4765971c6e1adb (MD5) Previous issue date: 2018-03-08 / As investigações científicas demonstram que os maiores problemas associados ao aumento da incidência dos problemas cardiovasculares em seres humanos estão associados ao estresse, a pressão arterial, ao sedentarismo e ao desequilíbrio que ocorre na composição dos ácidos graxos nas carnes que são consumidas, pois existem ácidos graxos insaturados que são benéficos a saúde humana, mas há outros que são maléficos, sendo necessário a procura pelo equilíbrio para obtenção de resultados promissores. Os lipídios são consumidos e absorvidos pelos animais monogástricos sem sofrer alterações, desta forma, a manipulação da composição dos óleos oferecidos nas dietas pode levar a modificação da composição dos tecidos. Neste contexto, objetivouse avaliar diferentes Blends de óleos vegetais em rações para suínos em terminação sobre os parâmetros sanguíneos, perfil de ácidos graxos e índices trombogênicos e aterogênicos. Foram utilizados 24 suínos machos castrados, com peso inicial de 72,0 ± 3,4 Kg/PV em delineamento de blocos casualizados, contendo 4 tratamentos e 6 repetições. Os tratamentos foram compostos por uma ração basal (RB) formulada com milho, farelo de soja, trigo, núcleo comercial e 2% de uma mistura (Blends) de óleos vegetais, sendo: T1 - RB + óleo de soja (100%); T2 - RB + 50% óleo de soja, 25% óleo de linhaça, 12,5% óleo de oliva e 12,5% óleo de canola (Blend 1); T3 - RB + 25% de óleo de soja, 50% de óleo de linhaça, 12,5% oliva e 12,5 % canola (Blend2); e T4 - RB + 25% de óleo de soja, 12,5% óleo de linhaça, 12,5% óleo de oliva e 50% óleo de canola (Blend3). Foram avaliados os parâmetros sanguíneos, o perfil de ácidos graxos e os índices de trombogenicidade e aterogenicidade nos cortes: lombo, toucinho, pernil, paleta, copa e barriga. A utilização do Blend 3 proporcionou melhores níveis de HDL e menores de LDL. Os Blends 2 e 3 proporcionaram menores teores de ácidos graxos saturados e maiores concentrações dos ácidos graxos insaturados, bem como menores índices de aterogenicidade e trombogenicidade. Recomenda-se a utilização do Blend 3 por promover aumento no HDL e redução no LDL, além de enriquecer a carne com ácidos graxos insaturados e promover menor risco ao surgimento de trombo e ateromas. / Scientific studies have shown that the major problems associated with the increased incidence of cardiovascular problems in humans are associated with stress, blood pressure, sedentary lifestyle and the imbalance that occurs in the composition of fatty acids in the meats that are consumed, since there are fatty acids unsaturates that are beneficial to human health, but there are others that are harmful, so the search for balance can bring promising results. Lipids are consumed and absorbed by the monogastric animals without modification, so manipulation of the composition of the oils offered in the diets can lead to the modification of the composition of the tissues. In this context, the objective was to evaluate different vegetable oil blends in feed for finishing pigs on blood parameters, fatty acid profile and thrombogenic and atherogenic indexes. Twenty - four castrated male pigs, with initial weight of 72.0 ± 3.4 kg / PV were used in a randomized block design, containing 4 treatments and 6 replicates. The treatments were composed by a basal diet (RB) formulated with corn, soybean meal, wheat, commercial nucleus and 2% of a blend of vegetable oils, being: T1 - RB + soybean oil (100%); T2 - RB + 50% soybean oil, 25% flaxseed oil, 12.5% olive oil and 12.5% canola oil (Blend 1); T3 - RB + 25% soybean oil, 50% linseed oil, 12.5% olive oil and 12.5% canola oil (Blend2); and T4 - RB + 25% soybean oil, 12.5% flaxseed oil, 12.5% olive oil and 50% canola oil (Blend3). Blood parameters, fatty acid profile and thrombogenicity and atherogenicity indexes were evaluated in the following sections: loin, backfat, shank, palette, crown and belly. The use of Blend 3 provided better levels of HDL and lower levels of LDL. Blends 2 and 3 provided lower levels of saturated fatty acids and higher concentrations of unsaturated fatty acids, as well as lower rates of atherogenicity and thrombogenicity. It is recommended to use Blend 3 for promoting increase in HDL and reduction in LDL, besides enriching the meat with unsaturated fatty acids and to promote lower risk to the appearance of thrombus and atheromas.

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