Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C DK-1870, Denmark.
Department of Animal Science, South Dakota State University, Brookings, SD 57007, USA; Department of Animal Science, Aarhus University, Tjele DK-8830, Denmark.
Poult Sci. 2022 Jan;101(1):101528. doi: 10.1016/j.psj.2021.101528. Epub 2021 Oct 13.
A study was conducted to evaluate standardized ileal digestibility (SID) of amino acids (AA) and nitrogen-corrected apparent metabolizable energy (AMEn) values of pre-pressed solvent-extracted carinata meal (SE-carinata meal) and expeller/cold-pressed canola meal (ECP-canola meal) for broilers. Two hundred and forty broiler chicks were divided into 40 groups of 6 birds/group and fed 4 diets in a completely randomized design (10 groups/diet) from 14 to 21 d of age. The diets were cornstarch-based containing SE-carinata meal, ECP-canola meal, or pre-pressed solvent-extracted canola meal (SE-canola meal; reference feedstuff) as the sole protein source, and N-free diet. Digestibility of AA and N retention for feedstuffs was determined by the direct method, whereas energy retention of feedstuffs was determined by difference from the N-free diet. On DM basis, SE-canola meal, ECP-canola meal, and SE-carinata meal contained 43, 36, and 50% CP; 2.60, 2.21, and 1.82% Lys; 32, 29, and 27% neutral detergent fiber, and 1.1, 15.3, and 0.88% ether extract, respectively. On DM basis, the AMEn value was lowest (P < 0.05) for SE-carinata meal (1,295 kcal/kg), intermediate (P < 0.05) for SE-canola meal (1,608 kcal/kg), and greatest (P < 0.05) for ECP-canola meal (1,994 kcal/kg). The SID values of indispensable AA for ECP-canola meal were greater (P < 0.05) than those for SE-canola meal or SE-carinata meal. The SID values of all indispensable AA (except Gly, Lys, and Trp) for SE-carinata meal were greater (P < 0.05) than those for SE-canola meal. The SE-canola meal and SE-carinata meal did not differ in SID of Gly and Trp; however, SE-carinata meal had lower (P < 0.05) SID of Lys than SE-canola meal. The results indicate that ECP-canola meal fed in this study could be a good source of AA and energy for broilers. Results also indicate that SE-carinata meal fed in this study could be an attractive AA source for broiler diet, but could benefit from Lys fortification due it its low SID Lys value.
一项研究旨在评估预压溶剂萃取羽扇豆粕（SE-羽扇豆粕）和压榨/冷压油菜粕（ECP-油菜粕）的氨基酸（AA）标准化回肠可消化率（SID）和氮校正表观代谢能（AMEn）值，以用于肉鸡。240 只肉鸡雏鸡被分为 40 组，每组 6 只，并在 14 至 21 日龄期间以完全随机设计（每组 10 个）喂食 4 种日粮。日粮以玉米淀粉为基础，以 SE-羽扇豆粕、ECP-油菜粕或预压溶剂萃取油菜粕（SE-油菜粕；参考饲料）作为唯一蛋白质来源，并添加无氮日粮。通过直接法测定饲料的 AA 消化率和氮保留率，通过与无氮日粮的差值来测定饲料的能量保留率。以 DM 为基础，SE-油菜粕、ECP-油菜粕和 SE-羽扇豆粕分别含有 43%、36%和 50%的 CP；2.60%、2.21%和 1.82%的 Lys；32%、29%和 27%的中性洗涤纤维，以及 1.1%、15.3%和 0.88%的乙醚提取物。以 DM 为基础，SE-羽扇豆粕的 AMEn 值最低（P < 0.05）（1,295 千卡/千克），SE-油菜粕的 AMEn 值中等（P < 0.05）（1,608 千卡/千克），ECP-油菜粕的 AMEn 值最高（P < 0.05）（1,994 千卡/千克）。ECP-油菜粕的必需氨基酸 SID 值大于 SE-油菜粕或 SE-羽扇豆粕（P < 0.05）。SE-羽扇豆粕的所有必需氨基酸（除 Gly、Lys 和 Trp 外）SID 值均大于 SE-油菜粕（P < 0.05）。SE-油菜粕和 SE-羽扇豆粕的 Gly 和 Trp SID 没有差异；然而，SE-羽扇豆粕的 Lys SID 值低于 SE-油菜粕（P < 0.05）。结果表明，本研究中添加的 ECP-油菜粕可以作为肉鸡的良好 AA 和能量来源。结果还表明，本研究中添加的 SE-羽扇豆粕可以作为肉鸡日粮的一种有吸引力的 AA 来源，但由于其 Lys SID 值较低，可能需要 Lys 强化。
