Fats are excellent sources of energy for pig feeding. The objective of this work was to analyze the levels of fatty acids in meat of pigs fed with diets including cassava flour, corn ground, and expeller soybean, supplemented with fish oil. Four pigs were used in three repetitions per treatment. The assay was carried out using a completely randomized design during 21 days (7 days for adaptation and 14 days for determinations). The experience included 4 diets; T1: basal diet (DB) prepared with ground corn (66%) plus soybean expeller (31%), T2: DB + fish oil 5% (by weight), T3: DB with 40% corn replaced by integral cassava (DBM) and T4 = DBM + fish oil 5% (by weight). Descriptive statistics and analysis of variance were performed by one-way, where the null hypothesis was rejected with an a risk level of 5%. Means were compared using the Tukey's test. Treatment averages did not show significant differences for saturated, mono-unsaturated nor poly-unsaturated fatty acids. It can be concluded that fish oil in pig diets does not cause changes in fatty acid meat profile.

Las grasas son excelentes fuentes de energía para ser adicionadas a la alimentación de cerdos. El objetivo del trabajo fue analizar los niveles de ácidos grasos en carne de cerdos alimentados con harina integral de mandioca, maíz molido y expeller de soja, suplementados con aceite de pescado. Se utilizaron 4 cerdos, con tres repeticiones por tratamiento, bajo un diseño completamente aleatorizado, durante 21 días (7 días de adaptación y 14 días de medición). Se ensayaron 4 dietas: T1: dieta base (DB) preparada con maíz molido (66%) más expeller de soja (31%); T2: DB + el agregado de 5% de aceite de pescado a la ración; T3: DB a la cual se le reemplazó el 40% de maíz por mandioca integral (DBM); y T4 = DBM + el agregado de 5% de aceite de pescado a la ración. Se efectuaron estadísticas descriptivas y análisis de la varianza a una sola vía, rechazando la hipótesis nula con un nivel de riesgo a del 5%. Las medias se compararon mediante la prueba de Tukey. En ningún tratamiento los promedios registraron diferencias significativas para los ácidos grasos saturados, mono-insaturados ni poli-insaturados. Se concluye que la inclusión de aceite de pescado en la dieta no produce modificaciones en el perfil de ácidos grasos de la carne de cerdo.

Estudou-se a influência da suplementação com óleo de peixe sobre a concentração dos ácidos graxos ômega 6 e 3, mostrado no leite de búfala. Foram utilizadas 24 búfalas aleatoriamente selecionadas e distribuídas em três grupos e alimentados com pastagem natural por 49 dias com: nenhum suplemento (grupo I), suplementado com 70mL de óleo de peixe (grupo II) e com 140mL de óleo de peixe (grupo III). A concentração de CLA diferiu (P<0,05) entre os três grupos, com valores máxima de até 7,14mg/g de gordura no grupo II. Não foram observadas diferenças significativas para os ácidos graxos omega 6, sendo o maior valor de 3,82mg/g de gordura no grupo I. Foi observada diferença significativa quanto aos ácidos graxos ômega 3 (P<0,05) nos grupos II e III em relação ao grupo I. O mais elevado valor, 2,42mg/g de gordura foi observado no grupo III. A relação ômega 6/3 mais estreita, 1,37:1, foi observada no grupo III. Os resultados mostram que os animais dos grupos II e III que receberam suplementação de óleo de peixe aumentou significativamente o teor de CLA e de omega 3, com diminuição de omega 6.

The aim of this research work was to investigate the influence of fish oil supplementation on the concentration of conjugated linoleic acid (CLA) and omega 6 and 3 in samples of buffalo milk. A total of 24 female buffaloes separated at random into three groups were fed for 49 days with: natural pasture (group I), supplemented with 70mL of fish oil (group II) and 140mL of fish oil (group III). In the experiment the concentration of CLA showed differences (P<0.05) among the three groups, with a maximum of 7.14mg/g fat in group II. No significant differences were found in omega-6 among the three groups. The highest value of 3.82mg/g fat corresponded to group I, whicht had not been supplemented with fish oil. Significant differences were observed in omega 3 (P<0.05) in groups II and III with respect to group I. The highest average value of 2.42mg/g fat was obtained in group III. The closest relationship omega 6/3 (1.37:1) was observed in group III. As a result, the diets of groups II and III, which included fish oil, increased significantly the content of CLA and omega 3 with reductions in levels of omega 6.