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Modification of the content of n-3 highly unsaturated fatty acid, chemical composition, and lipid nutritional indices in the meat of grass carp (Ctenopharyngodon idella) fed alfalfa (Medicago sativa) pellets.
Journal of Animal Science ( IF 3.3 ) Pub Date : 2020-03-18 , DOI: 10.1093/jas/skaa084 Luciano F Montenegro 1, 2, 3 , Adriana M Descalzo 1, 3 , Sebastián A Cunzolo 1, 4 , Carolina D Pérez 1, 3, 4
Journal of Animal Science ( IF 3.3 ) Pub Date : 2020-03-18 , DOI: 10.1093/jas/skaa084 Luciano F Montenegro 1, 2, 3 , Adriana M Descalzo 1, 3 , Sebastián A Cunzolo 1, 4 , Carolina D Pérez 1, 3, 4
Affiliation
A 120-d feeding trial was conducted to determine the effect of alfalfa (Medicago sativa) feeding on growth and chemical composition, fatty acid content, and nutritional and lipid indices of the meat of grass carp (Ctenopharyngodon idella). Two experimental diets were used: alfalfa pellet (AP) diet and artificial grain diet (GD). Final weight, feed conversion rate, and protein efficiency ratio were significantly greater in the GD group (P < 0.05). However, no differences in the length and condition factor were observed. The composition of the meat differed between treatments. The protein content was significantly greater in the AP group (P < 0.05), while the lipid and cholesterol contents were significantly greater in the GD group (P < 0.05). A greater proportion of saturated, n-6 polyunsaturated, and n-6 highly unsaturated fatty acids was obtained in the GD group. The AP group accumulated a greater concentration of eicosapentaenoic (EPA), docosapentaenoic (DPA), and docosahexaenoic (DHA) acids (P < 0.05). The fatty acid composition of the meat determined a significant decrease in the thrombogenicity index and saturation index (S/P) in the AP group (P < 0.05). The Elongase index was greater in the GD group (P < 0.05). In contrast, the AP group had a greater index of Δ9 Desaturase and Δ5 + Δ6 Desaturase for n-3 and n-6 fatty acids (P < 0.05). These results suggest that alfalfa feeding decreases the growth of C. idella but improves the quality of meat by increasing the protein, EPA, and DHA contents. It also reduces cholesterol content and improves nutritional indices.
中文翻译:
苜蓿(Medicago sativa)颗粒饲料草鱼(Ctenopharyngodon idella)肉中n-3高度不饱和脂肪酸含量、化学成分和脂质营养指标的改良。
通过120 d的饲喂试验,确定饲喂苜蓿(Medicago sativa )对草鱼( Ctenopharyngodon idella)生长及化学成分、脂肪酸含量、营养和血脂指标的影响。使用两种实验日粮:苜蓿颗粒日粮(AP)日粮和人工谷物日粮(GD)。GD 组的最终体重、饲料转化率和蛋白质效率显着较高(P < 0.05)。然而,没有观察到长度和条件因素的差异。处理之间的肉成分不同。AP 组蛋白质含量显着较高(P < 0.05),GD 组脂质和胆固醇含量显着较高(P < 0.05)。GD组中获得了更大比例的饱和脂肪酸、n -6 多不饱和脂肪酸和n -6 高度不饱和脂肪酸。AP组积累了较高浓度的二十碳五烯酸(EPA)、二十二碳五烯酸(DPA)和二十二碳六烯酸(DHA)(P <0.05)。肉的脂肪酸组成决定了AP组的血栓形成指数和饱和指数(S/P)显着降低(P <0.05)。GD组Elongase指数较高(P <0.05)。相比之下,AP组对于n -3 和n -6 脂肪酸的Δ9 去饱和酶和Δ5 + Δ6 去饱和酶指数较高(P < 0.05)。这些结果表明,饲喂苜蓿会降低C. idella的生长,但通过增加蛋白质、EPA 和 DHA 含量来提高肉的质量。它还可以降低胆固醇含量并改善营养指数。
更新日期:2020-04-23
中文翻译:
苜蓿(Medicago sativa)颗粒饲料草鱼(Ctenopharyngodon idella)肉中n-3高度不饱和脂肪酸含量、化学成分和脂质营养指标的改良。
通过120 d的饲喂试验,确定饲喂苜蓿(Medicago sativa )对草鱼( Ctenopharyngodon idella)生长及化学成分、脂肪酸含量、营养和血脂指标的影响。使用两种实验日粮:苜蓿颗粒日粮(AP)日粮和人工谷物日粮(GD)。GD 组的最终体重、饲料转化率和蛋白质效率显着较高(P < 0.05)。然而,没有观察到长度和条件因素的差异。处理之间的肉成分不同。AP 组蛋白质含量显着较高(P < 0.05),GD 组脂质和胆固醇含量显着较高(P < 0.05)。GD组中获得了更大比例的饱和脂肪酸、n -6 多不饱和脂肪酸和n -6 高度不饱和脂肪酸。AP组积累了较高浓度的二十碳五烯酸(EPA)、二十二碳五烯酸(DPA)和二十二碳六烯酸(DHA)(P <0.05)。肉的脂肪酸组成决定了AP组的血栓形成指数和饱和指数(S/P)显着降低(P <0.05)。GD组Elongase指数较高(P <0.05)。相比之下,AP组对于n -3 和n -6 脂肪酸的Δ9 去饱和酶和Δ5 + Δ6 去饱和酶指数较高(P < 0.05)。这些结果表明,饲喂苜蓿会降低C. idella的生长,但通过增加蛋白质、EPA 和 DHA 含量来提高肉的质量。它还可以降低胆固醇含量并改善营养指数。