Hemati Matin H R, Shariatmadari F, Karimi Torshizi M A, Chiba L I
a Department of Animal Science , Tarbiat Modares University , Tehran , Iran.
b Department of Animal Sciences , Auburn University , Auburn , AL , USA.
Br Poult Sci. 2016 Jun;57(3):348-57. doi: 10.1080/00071668.2016.1163522.
A 4 × 2 factorial experiment was conducted to study the effect of feeding diets-containing dietary fibre (DF) sources and a source of bile acid (BA) on growth performance and lipid metabolism. In addition, in vitro BA-binding capacity of fibre sources was investigated. A total of 256 one-d-old male broiler chickens (Ross 308) were assigned to DF sources [maize-soybean meal (control, C), or 30 g/kg of wheat bran (WB), barley bran (BB) or soybean hulls (SH)] and BA (with or without 1.5 g Na-deoxycholate/kg). Each treatment was replicated 4 times with 8 broiler chickens per cage. The highest in vitro BA-binding capacity was observed with BB (8.76 mg/g BB). From 0 to 21 d, with the addition of BA, the average daily feed intake (ADFI) decreased in broiler chickens fed on the C, WB or BB diets, while there was no difference with the SH diet. With added BA, the average daily gain decreased in broiler chickens fed on the C or SH diets, but it did not change in those fed on the other diets. The addition of BA decreased feed conversion ratio (FCR) in broiler chickens fed on the BB or WB diets, but it increased in those fed on the C or SH diets. Interaction results indicated that the apparent ileal digestibility of lipid increased in broiler chickens fed the C and other DF diets with BA compared to those fed the diets without BA. The addition of BA decreased the pancreas lipase activity (PLA) in broiler chickens fed on the C diet compared to those fed the C diet without BA, while no changes observed in those fed the DF diets with or without BA. No interaction was observed in total liver bile acid (TLBA). The WB, BB and SH with little Na-deoxycholate-binding capacity (<10 mg/g of DF) under in vitro conditions had particular effects with BA on the measured criteria in broiler chickens. The magnitude of improvement in digestibility of lipid with the addition of BA depends on the source of fibre used and the addition of BA in DF diets had little effect on growth performance in young broiler chicken diets.
进行了一项4×2析因试验，以研究饲喂含膳食纤维（DF）源和胆汁酸（BA）源的日粮对生长性能和脂质代谢的影响。此外，还研究了纤维源的体外BA结合能力。总共256只1日龄雄性肉鸡（罗斯308）被分配到DF源组[玉米-豆粕（对照组，C），或30 g/kg麦麸（WB）、大麦麸（BB）或大豆皮（SH）]和BA组（添加或不添加1.5 g/kg脱氧胆酸钠）。每个处理重复4次，每个笼子饲养8只肉鸡。观察到BB的体外BA结合能力最高（8.76 mg/g BB）。从0至21日龄，添加BA后，饲喂C、WB或BB日粮的肉鸡平均日采食量（ADFI）下降，而饲喂SH日粮的肉鸡无差异。添加BA后，饲喂C或SH日粮的肉鸡平均日增重下降，但饲喂其他日粮的肉鸡平均日增重未改变。添加BA降低了饲喂BB或WB日粮的肉鸡的饲料转化率（FCR），但提高了饲喂C或SH日粮的肉鸡的饲料转化率。交互作用结果表明，与未添加BA的日粮相比，添加BA的C组和其他DF日粮组肉鸡的脂质表观回肠消化率有所提高。与未添加BA的C日粮组相比，添加BA降低了饲喂C日粮的肉鸡的胰腺脂肪酶活性（PLA），而添加或不添加BA的DF日粮组肉鸡的胰腺脂肪酶活性未观察到变化。总肝胆汁酸（TLBA）未观察到交互作用。在体外条件下，与少量Na-脱氧胆酸结合能力（<10 mg/g DF）的WB、BB和SH与BA对肉鸡的测定指标有特殊影响。添加BA后脂质消化率的提高幅度取决于所用纤维的来源，且DF日粮中添加BA对幼龄肉鸡日粮的生长性能影响较小。
