Saez Patricio, Borquez Aliro, Dantagnan Patricio, Hernández Adrián
a Escuela de Acuicultura, Facultad de Recursos Naturales , Universidad Católica de Temuco , Temuco , Chile.
Arch Anim Nutr. 2015;69(2):143-57. doi: 10.1080/1745039X.2015.1009613. Epub 2015 Feb 24.
A digestibility trial was conducted to assess the effect of dehulling, steam-cooking and microwave-irradiation on the apparent digestibility of nutrients in white lupin (Lupinus albus) seed meal when fed to rainbow trout (Oncorhynchus mykiss) and Atlantic salmon (Salmo salar). Six ingredients, whole lupin seed meal (LSM), dehulled LSM, dehulled LSM steam-cooked for 15 or 45 min (SC15 and SC45, respectively) and LSM microwave-irradiated at 375 or 750 W (MW375 and MW750, respectively), were evaluated for digestibility of dry matter, crude protein (CP), lipids, nitrogen-free extractives (NFE) and gross energy (GE). The diet-substitution approach was used (70% reference diet + 30% test ingredient). Faeces from each tank were collected using a settlement column. Dehulled LSM showed higher levels of proximate components (except for NFE and crude fibre), GE and phosphorus in comparison to whole LSM. Furthermore, SC15, SC45, MW375 and MW750 showed slight variations of chemical composition in comparison to dehulled LSM. Results from the digestibility trial indicated that dehulled LSM, SC15, SC45 and MW375 are suitable processing methods for the improvement of nutrients' apparent digestibility coefficient (ADC) in whole LSM. MW750 showed a lower ADC of nutrients (except for CP and lipids for rainbow trout) in comparison with MW350 for rainbow trout and Atlantic salmon, suggesting a heat damage of the ingredient when microwave-irradiation exceeded 350 W.
进行了一项消化率试验，以评估去皮、蒸汽蒸煮和微波辐照对投喂虹鳟（Oncorhynchus mykiss）和大西洋鲑（Salmo salar）时白羽扇豆（Lupinus albus）籽粕中营养成分表观消化率的影响。评估了六种成分，即全羽扇豆籽粕（LSM）、去皮LSM、分别蒸煮15分钟或45分钟的去皮LSM（分别为SC15和SC45）以及以375瓦或750瓦微波辐照的LSM（分别为MW375和MW750）的干物质、粗蛋白（CP）、脂质、无氮浸出物（NFE）和总能（GE）的消化率。采用日粮替代法（70%参考日粮 + 30%试验成分）。使用沉降柱收集每个水箱的粪便。与全LSM相比，去皮LSM的粗成分（除NFE和粗纤维外）、GE和磷含量更高。此外，与去皮LSM相比，SC15、SC45、MW375和MW750的化学成分略有变化。消化率试验结果表明，去皮LSM、SC15、SC45和MW375是提高全LSM中营养成分表观消化率系数（ADC）的合适加工方法。与虹鳟和大西洋鲑的MW350相比，MW750的营养成分ADC较低（虹鳟的CP和脂质除外），这表明当微波辐照超过350瓦时，该成分受到了热损伤。
