The aim of the present study was to evaluate the effect of feeding four levels of tuna oil on performance and fatty acid (FA) profiles of broiler chicken meat. 240 Ross broiler chickens were randomly assigned to 20 pe...The aim of the present study was to evaluate the effect of feeding four levels of tuna oil on performance and fatty acid (FA) profiles of broiler chicken meat. 240 Ross broiler chickens were randomly assigned to 20 pens and divided into four treatments: 0%, 0.75%, 1%, and 1.25% of tuna oil. At 49 days, breast and legs-thighs muscles were processed for FA analysis. Concentrations of FA in legs and thighs meat were significantly higher when compared with breast meat. In both types of meats (breast and legs-thighs), the inclusion of 1.0% or 1.25% of tuna oil in the diet significantly increased (P < 0.05) the concentration of n-3 FA (especially docosahexaenoic and eicosapentaenoic acids). Fat in broiler breast contained a proportion of 29% saturated FA (SFA): 36% monosaturated FA (MFA): 35% polyunsaturated FA (PUFA);while legs and thighs meat had a proportion of 28% SFA: 38% MFA: 33% PUFA. The addition of tuna oil in the broiler diet significantly reduced the deposition of SFA, MFA, and PUFA in breast meat, while in legs and thighs these reductions were less noticeable. The significant reduction in the concentration of n-6 PUFA and the increment of n-3 PUFA were more evident in breast than in legs and thighs, and with the addition of 1% and 1.25% of tuna oil. The results of the present study suggest a difference in FA deposition attributable to supplementation with tuna oil. The addition of tuna oil could be recommendable to increase n-3 PUFA in both broiler chicken breast and legs-thighs meats, providing a healthier and functional chicken meat to consumer.展开更多
目的探究不同种类珍禽腿肉的品质差异,并评价其风味。方法选取了5种珍稀禽类(绿头鸭、雉鸡、鹧鸪、鹌鹑、鸸鹋),比较分析了其腿肉的营养成分、pH、蒸煮损失率、色泽及质构特性的差异,并通过氨基酸自动分析仪和顶空固相微萃取-气相色谱-...目的探究不同种类珍禽腿肉的品质差异,并评价其风味。方法选取了5种珍稀禽类(绿头鸭、雉鸡、鹧鸪、鹌鹑、鸸鹋),比较分析了其腿肉的营养成分、pH、蒸煮损失率、色泽及质构特性的差异,并通过氨基酸自动分析仪和顶空固相微萃取-气相色谱-质谱法对其游离氨基酸和挥发性风味物质进行评价。结果5种珍禽腿肉中的水分、蛋白质、脂肪含量部分存在显著差异(P<0.05)。从肉品质上来说,鹌鹑腿肉的蒸煮损失率最低为8.77%,且其硬度、胶粘性、咀嚼性较小,肉的保水性好且肉质较嫩。5种珍禽腿肉中谷氨酸和丙氨酸的味道强度值(taste active value,TAV)较高。鹧鸪腿肉的鲜味氨基酸占比(29.78%)最高,鸸鹋腿肉的甜味氨基酸占比(57.70%)最高。5种珍禽腿肉中挥发性风味物质均以醛类和烷烯烃类为主,绿头鸭腿肉的醛类物质相对含量最高,为64.39%,雉鸡腿肉的烷烯烃类物质相对含量最高为40.08%。结论5种珍禽腿肉的品质、风味各有优劣,可以针对其品质选择合适的加工方式和加工用途。展开更多
文摘The aim of the present study was to evaluate the effect of feeding four levels of tuna oil on performance and fatty acid (FA) profiles of broiler chicken meat. 240 Ross broiler chickens were randomly assigned to 20 pens and divided into four treatments: 0%, 0.75%, 1%, and 1.25% of tuna oil. At 49 days, breast and legs-thighs muscles were processed for FA analysis. Concentrations of FA in legs and thighs meat were significantly higher when compared with breast meat. In both types of meats (breast and legs-thighs), the inclusion of 1.0% or 1.25% of tuna oil in the diet significantly increased (P < 0.05) the concentration of n-3 FA (especially docosahexaenoic and eicosapentaenoic acids). Fat in broiler breast contained a proportion of 29% saturated FA (SFA): 36% monosaturated FA (MFA): 35% polyunsaturated FA (PUFA);while legs and thighs meat had a proportion of 28% SFA: 38% MFA: 33% PUFA. The addition of tuna oil in the broiler diet significantly reduced the deposition of SFA, MFA, and PUFA in breast meat, while in legs and thighs these reductions were less noticeable. The significant reduction in the concentration of n-6 PUFA and the increment of n-3 PUFA were more evident in breast than in legs and thighs, and with the addition of 1% and 1.25% of tuna oil. The results of the present study suggest a difference in FA deposition attributable to supplementation with tuna oil. The addition of tuna oil could be recommendable to increase n-3 PUFA in both broiler chicken breast and legs-thighs meats, providing a healthier and functional chicken meat to consumer.
文摘目的探究不同种类珍禽腿肉的品质差异,并评价其风味。方法选取了5种珍稀禽类(绿头鸭、雉鸡、鹧鸪、鹌鹑、鸸鹋),比较分析了其腿肉的营养成分、pH、蒸煮损失率、色泽及质构特性的差异,并通过氨基酸自动分析仪和顶空固相微萃取-气相色谱-质谱法对其游离氨基酸和挥发性风味物质进行评价。结果5种珍禽腿肉中的水分、蛋白质、脂肪含量部分存在显著差异(P<0.05)。从肉品质上来说,鹌鹑腿肉的蒸煮损失率最低为8.77%,且其硬度、胶粘性、咀嚼性较小,肉的保水性好且肉质较嫩。5种珍禽腿肉中谷氨酸和丙氨酸的味道强度值(taste active value,TAV)较高。鹧鸪腿肉的鲜味氨基酸占比(29.78%)最高,鸸鹋腿肉的甜味氨基酸占比(57.70%)最高。5种珍禽腿肉中挥发性风味物质均以醛类和烷烯烃类为主,绿头鸭腿肉的醛类物质相对含量最高,为64.39%,雉鸡腿肉的烷烯烃类物质相对含量最高为40.08%。结论5种珍禽腿肉的品质、风味各有优劣,可以针对其品质选择合适的加工方式和加工用途。
