Supplementation of lamb diets with vitamin E and rosemary extracts on meat quality parameters.

BACKGROUND: Supranutritional supplementation of lamb diets with α-tocopherol is an effective method to reduce lipid oxidation and colour deterioration in meat products. However, alternative antioxidant sources have been proposed to replace the supranutritional vitamin E applications. RESULTS: Indoor concentrate-fed Rasa Aragonesa male lambs (n = 480) were supplemented with increasing levels of all-rac-α-tocopheryl acetate (0.25, 0.5, 1.0 g kg-1 compound feed), rosemary extract (0.20, 0.40, or 0.80 g kg-1 compound feed), or rosemary extract embedded in a fat matrix (0.20, 0.40, or 0.80 g kg-1 compound feed) for 14 days before slaughter. The longissimus thoracis et lumborum muscle from three lambs per pen (18 lambs per treatment) were modified-atmosphere packaged (70% O2 + 30% CO2 ) and maintained under retail conditions for 14 days. Supranutritional supplementation with antioxidants had no effect (P > 0.05) on average daily weight gain, feed intake, and feed efficiency. Rosemary extract supplementation (with or without fat embedment) had no effect on lipid oxidation, myoglobin forms, or colour stability parameters, regardless of the dose. All vitamin E supplementation levels significantly affected lipid oxidation, colour stability (L*, C*, and h), myoglobin forms, and meat discoloration parameters compared with non-supplemented lambs. CONCLUSIONS: This study demonstrates that, unlike vitamin E, neither dose nor protection of the rosemary extract had an effect on lipid oxidation or meat colour stability of lambs during the 14 days of storage under retail conditions. © 2020 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Dietary supplementation of 11 different plant extracts on the antioxidant capacity of blood and selected tissues in lightweight lambs.

BACKGROUND: Due to the growing public concern regarding the addition of chemical antioxidants to foods, focus has shifted towards natural alternatives. Because of their antioxidant potential, culinary herbs and spices have long been used to extend the shelf-life of foods. However, a better understanding of the fate of these products following intake is required to assess their use in lamb diets. RESULTS: Two hundred and eighty-eight Rasa Aragonesa male lambs (70 days old) were supplemented (5.0 g kg-1 compound feed) with bay, marjoram, oregano, rosemary, thyme, turmeric, cumin, caraway, dill, cinnamon and nutmeg extracts for 14 days before slaughter. Dietary supplementation with plant extracts had no effect on intake, growth performance or antioxidant activity in blood (TEAC values). In muscle, nutmeg supplementation increased (P < 0.05) the radical-scavenging capacity (TEAC), whereas a decrease in the radical-scavenging capacity was found for lambs supplemented with oregano, dill, cinnamon and nutmeg (ORAC values). In liver, nutmeg supplementation increased (P < 0.05) the antioxidant capacity (TEAC), whereas bay (ORAC), turmeric, cinnamon and nutmeg (DPPH• values) decreased (P < 0.05) the radical-scavenging capacity of the tissue. In kidney, a lower (P < 0.05) radical-scavenging capacity (TEAC values) was found in lambs supplemented with oregano, cumin and caraway, whereas, turmeric, cumin, caraway, cinnamon and nutmeg increased (P < 0.05) the antioxidant capacity (ORAC values) in kidney. CONCLUSION: Supplementation of lamb diets with plant extracts affected radical-scavenging activity in muscle, liver and kidney. However, due to the divergent results of the different assays for the same tissue, it is not advisable to discriminate plant extracts using this approach. © 2019 Society of Chemical Industry.

Dietary vitamin E dosage and source affects meat quality parameters in light weight lambs.

BACKGROUND: Supra-nutritional vitamin E supplementation is a commonly used approach to delay lipid oxidation and colour deterioration in lamb and beef meat marketed under modified atmosphere packaging. However, these applications lack a precise calibration of dose for the desired effect and, in addition, limited information is available regarding the use of natural vitamin E for this purpose. RESULTS: Three hundred and sixty Rasa Aragonesa lambs were fed diets supplemented with all-rac-α-tocopheryl acetate (250, 500, 1000 and 2000 mg kg-1 compound feed), RRR-α-tocopheryl acetate (125, 250, 500 and 1000 mg kg-1 compound feed) and a basal diet without vitamin E supplementation for 14 days before slaughter at 25.8 ± 1.67 kg body weight. Vitamin E supplementation had no effect (P > 0.05) on average daily weight gain, feed intake and feed efficiency. Display time had larger effects on lipid oxidation, colour stability, myoglobin forms and meat discolouration parameters compared to vitamin E supplementation. However, vitamin E source and dosage significantly extended meat shelf-life as indicated by lipid oxidation, redness, hue angle, metmyoglobin formation, deoxymyoglobin formation, A580-630 and ISO2 . CONCLUSION: The quantification of these effects demonstrated that the biological activity value of 1.36 used to distinguish both vitamin E sources is not appropriate for meat quality enhancing properties. © 2017 Society of Chemical Industry.

Revisión de la literatura sobre el uso del testamento vital por la población mayor / Review of literature about the use of living bill by elderly population

El Testamento Vital (TV) recoge las preferencias detratamiento de una persona para cuando sea incapazde tomar decisiones por sí misma. Nuestro país estádando los primeros pasos para su implantación. Paraque el TV sea accesible y útil para las personas mayores,conviene conocer cómo se ha desarrollado en otrospaíses. En EE.UU., el TV ha pasado de una concepciónformal y burocrática a otra integral, denominadade Planificación Anticipada de Decisiones Sanitarias.La población mayor española tiene una opinión favorablesobre el TV si se incluye en una estrategia de comunicacióncon la familia y los profesionales. Teneren cuenta los hallazgos de la literatura facilitará eldesarrollo de un modelo organizativo efectivo que normaliceen España el uso del testamento vital por partede los mayores(AU)

The Living Will (LW) gathers the treatment preferencesof a person. Spain is starting the LW’ implantation.In order to the TV will be accessible and usefulfor the older people, we have to know how it has beendeveloped in other countries. In United States, TV hashappened through different stages: from a formal andbureaucratic conception to an integral concept, denominatedAdvance Care Planning. Spanish oldadults have a favourable opinion about TV, but it isnecessary to include it in a strategy of communicationand dialogue with its family and its professionals caregivers.Review literature findings will facilitate the developmentof an effective organizational model thatstandardizes in Spain the use of the TV by the oldadults(AU)

La perspectiva de las personas mayores sobre el testamento vital / Elders' perspective about advance directives

Antecedentes. La popularización del testamento vital (TV) exige conocer la perspectiva que sobre él tienen sus potenciales usuarios. Cualquier intento de generalizar el TV sin evaluar cómo será recibido por las personas mayores está condenado al fracaso. Objetivo: Explorar la perspectiva de los mayores sobre el testamento vital. Diseño: Estudio cualitativo. 40 personas mayores, usuarios de 3 Centros de Salud y 1 Residencia Asistida de Madrid, se reunieron en 5 grupos de discusión en abril de 2004. Participantes: 14 mediadores captaron a 2-3 participantes cada uno. Se consideró que edad y residencia en medio familiar o institucional son las variables que más diferencian la elaboración de los discursos sobre el TV. Se utilizaron, pues, como criterios de segmentación, buscando heterogeneidad entre grupos y homogeneidad y heterogeneidad intragrupal. La saturación se consideró cuando las ideas expresadas resultaron recurrentes. Resultados: 4 ideas se extraen de los datos: 1) los mayores prefieren la planificación anticipada de decisiones al TV. 2) Su opinión sobre el TV se asocia a la vivencia singular de otros eventos en el final de la vida. 3) Conceden un papel relevante a la familia. 4) Desean conducir su propia vida, pero “sin papeles escritos”. Conclusiones. La implementación del TV a través de una estrategia educativa e institucional se beneficiará si consideramos la perspectiva de la población mayor española sobre el TV

Background: The introduction of advance directives (AD) require to examine the perspective their potential users have about. Any public policy about the implementation of ADs adressed to elders will fall if their perspective is unknown. Objective: To examine the elders' perspective about advance directives. Methods: Qualitative study. 40 elders, users of 3 Primary Health Care Center, and of 1 Nursing Home from Madrid. 5 focus groups were organized in 2004 April. Participants: 14 providers recruited 2-3 participants each. Age and emplacement (home or institution) were the variables considered as the most important for the discurse differences about ADs. They were used as segmentation criteria, looking for heterogeneity between groups, and homogeneity and heterogeneity intra groups. The discussion of each group last until no new concepts arose. Results: 4 assumptions source from groups: 1) Elder people prefer advanced care planning to only signed ADs. 2) Their opinion about ADs is linked to other events about the end of life. 3) They give a relevant role to their families. 4) They desire to control their lifes and decisions, but "without papers". Conclusion: The implementation of ADs through educational public policies in elder population only will sucess if elders' perspective is considered