Jimenez-Moya Beatriz, Barroeta Ana C, Guardiola Francesc, Soler María Dolores, Rodriguez-Sanchez Raquel, Sala Roser
Animal Nutrition and Welfare Service (SNiBA), Animal and Food Science Department, Faculty of Veterinary, Universitat Autònoma de Barcelona, Edifici V, Travessera dels Turons, 08193 Bellaterra, Spain.
Libifood Research Group, Departament de Nutrició, Ciències de l'Alimentació i Gastronomia, INSA-UB, XIA, Campus de l'Alimentació Torribera, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona, Av Prat de la Riba, 171, 08921 Santa Coloma de Gramenet, Spain.
Animals (Basel). 2021 Sep 3;11(9):2586. doi: 10.3390/ani11092586.
This study aimed to evaluate the replacement of palm oil (P) with increasing levels of soybean acid oil (SA), a by-product of soybean oil (S) refining, on lipid class content and fatty acid (FA) digestibility in the intestine and excreta of chickens at 11 and 35 days (d). Five experimental diets were obtained by supplementing a basal diet with 6% of P (P6), 6% of SA (SA6), 4% of P + 2% SA (P4-SA2), 2% of P + 4% of SA (P2-SA4) and 6% of S (S6). A total of 480 one-d-old female broiler chickens (Ross 308) were housed in metabolic cages (6 cages/treatment, with 16 birds/cage). Replacing P with SA improved fat absorption at 11 and 35 d ( < 0.05), but not feed AME values and saturated FA (SFA) digestibility at 11 d. As age increased, the absorption of SFA and free fatty acids (FFA) improved, and the contribution of the upper ileum to FA absorption increased ( < 0.05). At 35 d, SA6 (56% FFA) and P2-SA4 (40% FFA, 2.6 unsaturated-to-saturated FA ratio) could replace S6 without impairing fat utilization. The replacement of P with SA represents a suitable strategy to use this by-product.
本研究旨在评估用大豆油（S）精炼副产物大豆酸油（SA）逐步替代棕榈油（P），对11日龄和35日龄鸡的肠道及排泄物中脂质类别含量和脂肪酸（FA）消化率的影响。通过在基础日粮中添加6%的P（P6）、6%的SA（SA6）、4%的P + 2%的SA（P4-SA2）、2%的P + 4%的SA（P2-SA4）和6%的S（S6），获得了五种实验日粮。总共480只1日龄雌性肉鸡（罗斯308）饲养在代谢笼中（每个处理6个笼子，每个笼子16只鸡）。用SA替代P可提高11日龄和35日龄时的脂肪吸收率（P<0.05），但在11日龄时对饲料AME值和饱和脂肪酸（SFA）消化率无影响。随着年龄增长，SFA和游离脂肪酸（FFA）的吸收率提高，回肠上段对FA吸收的贡献增加（P<0.05）。在35日龄时，SA6（56% FFA）和P2-SA4（40% FFA，不饱和与饱和FA比例为2.6）可替代S6而不影响脂肪利用。用SA替代P是利用该副产物的合适策略。
