Howe Peter R C, Downing Jeffrey A, Grenyer Brin F S, Grigonis-Deane Elizabeth M, Bryden Wayne L
Smart Foods Centre, University of Wollongong, NSW 2522, Australia.
Lipids. 2002 Nov;37(11):1067-76. doi: 10.1007/s11745-002-1002-3.
Enriching foods with long-chain n-3 PUFA (LC n-3 PUFA) is an important approach to increasing the dietary intake of these beneficial nutrients. Enrichment of meat and eggs can be achieved by adding flaxseed, fish oil, or fishmeal to pig or poultry feeds. However, utilization of these sources, particularly fishmeal, has been limited by concerns about adverse effects on sensory qualities. In this study, we evaluated the use of PorcOmega (POM), a stabilized tuna fishmeal formulation, as a source of DHA for enrichment of pork and poultry products. Pigs, broilers, and laying hens were fed rations containing varying levels of POM for varying time periods, and its impact on the LC n-3 PUFA content and sensory qualities of cooked meat and eggs was examined. Pork and chicken products, including chops, sausages, and eggs, with substantially increased (up to sevenfold) levels of LC n-3 PUFA (predominantly DHA) were achieved by including up to 10% POM in rations. The increases were retained after cooking. Some sensory deficits were noted when using higher levels of POM (exceeding 15% in meat and 10% in eggs). However, at modest rates of feeding (5-10% POM), palatable meat and eggs were obtained with worthwhile levels of enrichment. The fishmeal feeding strategy used in this study offers a viable means of producing a range of alternative dietary sources of LC n-3 PUFA.
用长链n-3多不饱和脂肪酸(LC n-3 PUFA)强化食品是增加这些有益营养素膳食摄入量的重要途径。通过在猪或家禽饲料中添加亚麻籽、鱼油或鱼粉,可以实现肉类和蛋类的强化。然而,由于担心对感官品质产生不利影响,这些来源,尤其是鱼粉的利用受到了限制。在本研究中,我们评估了一种稳定化金枪鱼鱼粉制剂PorcOmega(POM)作为DHA来源用于强化猪肉和家禽产品的情况。给猪、肉鸡和蛋鸡饲喂含有不同水平POM的日粮,为期不同时间段,并检测其对熟肉和蛋类中LC n-3 PUFA含量和感官品质的影响。通过在日粮中添加高达10%的POM,猪肉和鸡肉产品,包括排骨、香肠和鸡蛋,其LC n-3 PUFA(主要是DHA)水平大幅提高(高达七倍)。烹饪后这些增加的含量得以保留。当使用较高水平的POM时(肉类中超过15%,蛋类中超过10%),会出现一些感官缺陷。然而,以适度的添加比例(5-10% POM),可以获得口感良好且强化水平可观的肉类和蛋类。本研究中使用的鱼粉饲喂策略提供了一种可行的方法来生产一系列富含LC n-3 PUFA的替代膳食来源。