Effects of free-fatty-acid content and saturation degree of the dietary oil sources on lipid-class content and fatty-acid digestibility along the gastrointestinal tract in broilers from 22 to 37 days of age

Replacement of Palm Oil with Soybean Acid Oil in Broiler Chicken Diet: Fat Digestibility and Lipid Class Content along the Intestinal Tract

“…Results for FFA absorption and FA digestibility in the lower ileum using SA6 were similar to those obtained with S6, as they also were for the performance parameters, abdominal fat deposition, and feed AME values. Therefore, the potential inclusion of this acid oil depends on the age of the bird, which agrees with Rodriguez-Sanchez et al [ 15 ], Jimenez-Moya et al [ 17 ], and Rodriguez-Sanchez et al [ 16 ].…”

“…A fat source with a high level of FFA has been negatively associated to fat utilization [ 14 ]. However, subsequent studies have shown that blends of S + SA up to 15% FFA in starter chicks and up to 35% FFA in grower-finisher chickens have no negative repercussions on fat utilization [ 15 , 16 ]. On the other hand, a recent study in 35-day-old broiler chickens reported the positive effect of blending a saturated acid oil (palm fatty acid distillate) with conventional unsaturated oil (S), when the blend had less than 30% FFA and the UFA:SFA was higher than 2.6 [ 17 ].…”

“…1 Soybean oil, soybean acid oil and palm oil in different proportions 2. Provides per kg of feed: vitamin A (from retinol), 10,000 IU; vitamin D3 (from cholecalciferol), 4800 IU; vitamin E (from alfa tocopherol), 45 mg; vitamin B1, 3 mg; vitamin B2, 9 mg; vitamin B6, 4.5 mg; vitamin B12, 40 µg; vitamin K3, 3 mg; calcium pantothenate,16.5 mg; nicotinic acid, 51 mg; folic acid, 1.8 mg; biotin, 150 µg; Fe (from FeSO 4 •7H 2 O), 54 mg; I (from Ca(I 2 O 3 ) 2 ), 1.2 mg; Cu (from CuSO 4 •5H 2 O), 12 mg; Mn (from MnO), 90 mg; Zn (from ZnO), 66 mg; Se (from Na 2 SeO 3 ), 0.18 mg; β-glucanase 150 U; xylanase 270 U.…”

Olive pomace oil and acid oil as alternative fat sources in growing-finishing broiler chicken diets

“…However, Zhang et al (2013) did not observe differences in broilers fed olive oil compared to those fed tallow. The improved feed efficiency in animals fed O compared to those fed PO may be explained by the higher degree of unsaturation, since many authors have reported that digestibility increases as the degree of unsaturation does ( Tancharoenrat et al, 2014 ; Rodriguez-Sanchez et al, 2019a , 2021 ; Jimenez-Moya et al, 2021b ). In contrast, OA performed more poorly than O despite having a similar FA composition.…”

“…There are controversial results in the literature regarding the effects of dietary FFA content on fat utilization and AME. Some authors have reported a decrease in the AME value and lower digestibility values when dietary FFA content increases ( Wiseman and Salvador, 1991 ; Blanch et al, 1995 , 1996 ; Wiseman et al, 1998 ), while other studies observed no negative impact on performance or feed efficiency ( Zumbado et al, 1994 ; Vilarrasa et al, 2015 ; Rodriguez-Sanchez et al, 2019a , 2021 ; Jimenez-Moya et al, 2021a ). In this regard, and according to the results of previous studies, it may be better to use acid oils from unsaturated sources and include them in growing-finishing broiler chicken diets rather than in earlier stages, as age has a positive effect on FFA absorption and fat utilization ( Tancharoenrat et al 2013 ; Roll et al 2018 ; Rodriguez-Sanchez, et al 2019b ; Viñado et al 2019 ; Jimenez-Moya et al 2021a ).…”