Nutritional evaluation of passion fruit seed meal for meat quails

SUMMARY The objective of this study was to determine the chemical composition, apparent metabolizable energy (AME), apparent metabolizable energy corrected for nitrogen balance (AMEn) and the metabolizability of dry matter (DM), crude protein (CP), ether extract (EE) and neutral detergent fiber (NDF) of passion fruit seed meal (PFM) for quails. One hundred meat quails (Coturnix coturnix japonica), with 21 days old, allotted in a completely randomized design, with four treatments, five replicates and four animals per experimental unit. The treatments consisted of different levels PFM (4.0, 8.0, 12.0 and 16.0%) that replaced the basal diet (w/w). Metabolizable values were determined by fitting linear equations the PFM can be characterized as an alternative feedstuff for meat quails and the main chemical compounds are gross energy (5,569 kcal kg-1), CP (11.34%), EE (18.84%) and NDF (50.22%), as fed basis. Linear equations were fitted as follow: AME = 2,976 x + 5.877 (r2 = 0.94) and AMEn = 2,939 x + 4.864 (r2 = 0.95), thus AME and AMEn were estimated at 2,976 and 2,939 kcal kg-1, respectively. Additionaly, equations were adjusted for CP, EE, NFD and DM, respectively resulting in a metabolization of 6.35, 17.9, 12.48 and 45.66%. It is concluded that main components of the passion fruit seed meal are gross energy, crude protein, ether extract and neutral detergent fiber and its AME and AMEn for meat quails are 2,976 and 2,939 kcal kg-1, respectively.

摘要 本研究旨在测定百香果籽粕（passion fruit seed meal, PFM）用于肉用鹌鹑的化学成分、表观代谢能（apparent metabolizable energy, AME）、氮平衡校正表观代谢能（apparent metabolizable energy corrected for nitrogen balance, AMEn），以及干物质（dry matter, DM）、粗蛋白质（crude protein, CP）、乙醚浸出物（ether extract, EE，粗脂肪）和中性洗涤纤维（neutral detergent fiber, NDF）的代谢率。试验选取100只21日龄的肉用鹌鹑（Coturnix coturnix japonica），采用完全随机设计，设置4个处理组、5个重复，每个试验单元饲养4只鹌鹑。各处理组以重量计（w/w）的不同比例的百香果籽粕替代基础日粮，替代水平分别为4.0%、8.0%、12.0%和16.0%。通过拟合线性方程测定代谢能值，结果表明百香果籽粕可作为肉用鹌鹑的替代饲料原料，其以饲喂基础计的主要化学成分分别为：总能5569 kcal·kg⁻¹、粗蛋白质11.34%、乙醚浸出物18.84%以及中性洗涤纤维50.22%。拟合得到的线性方程如下：AME = 2976x + 5.877（决定系数r²=0.94），AMEn = 2939x + 4.864（决定系数r²=0.95），据此估算得到百香果籽粕的表观代谢能和氮平衡校正表观代谢能分别为2976 kcal·kg⁻¹和2939 kcal·kg⁻¹。此外，针对粗蛋白质、乙醚浸出物、中性洗涤纤维和干物质拟合的代谢率方程分别得到其代谢率为6.35%、17.9%、12.48%和45.66%。综上，百香果籽粕的主要成分为总能、粗蛋白质、乙醚浸出物与中性洗涤纤维，其用于肉用鹌鹑的表观代谢能与氮平衡校正表观代谢能分别为2976 kcal·kg⁻¹和2939 kcal·kg⁻¹。