RESUMENEl aceite de atún como fuente de ácidos grasos ω-3 en el huevo de gallina.Los aceites de pescado son una fuente de lípidos poliinsaturados de origen animal, principalmente de los ácidos grasos omega-3 (AGω3), eicosapentaenoico (EPA) y docosahexaenoico (DHA), beneficiosos para la salud. En este trabajo se utilizó el aceite de atún como fuente de estos nutrientes en el huevo para consumo. Se utilizaron 120 gallinas blancas Leghorn IsaBabcock B-300 de 90 semanas de edad, distribuidas al azar en tres tratamientos, con cuatro réplicas cada uno. Los tratamientos consistieron en adicionar 1% y 2% de aceite de atún en la dieta de las gallinas ponedoras. Se determinaron los lípidos totales y AGω3 en el huevo, obteniéndose 300% más de EPA (0,40, 1,37, 1,54 mg/g lípidos) y DHA (7,90, 24,67, 24,50 mg/g lí-pidos) al adicionar 1 y 2% de aceite de atún en la dieta de las aves, que en el grupo testigo. La relación ω6:ω3 en el huevo disminuyó con el suplemento dietético de aceite de atún (11,4:1, 3,8:1, 3:1), lo mismo ocurrió con el peso del huevo. Otras variables de productividad de las aves y la calidad del huevo no se afectaron (p>0,05). PALABRAS-CLAVE: Aceite de atún -Ácidos grasos ω3 -Gallina -Huevo para consumo. SUMMARYThe tuna oil as ω-3 fatty acids source for egg of laying hens.Fish oils are a source of polyunsaturated omega 3 fatty acids (AGω3), mainly eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), which supply many benefits to human health. Tuna oil was used as a source of marine 3ωFA to enrich eggs by supplementing the diet of egg-laying hens with tuna oil. One hundred and twenty White Leghorn hens of 90 weeks old were allocated on three treatments with four replicates each, on a completely random design. Treatments consisted of adding 1% and 2 % of tuna oil to the diets. The total lipids and ω3FA of the eggs were determined. The egg-laying hen dietary tuna oil supplement (1 and 2%) enriched eggs with 300% more EPA (0.40, 1.37, 1.54 mg/g lipids) and DHA (7.90, 24.67, 24.50 mg/g lipids) versus the control egg. The ω6:ω3 ratio decreased (11.4:1, 3.8:1, 3.0:1) as dietary tuna oil increased. There were no differences (p>0.05) among treatments in productive performance and egg quality, except egg weight which decreased with the tuna oil.
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