本研究研究了β-甘露聚糖酶和大豆皮对生产性能的影响。经济学,鸡蛋质量,血液学和血清生物化学,营养素消化率,肠道形态学,消化粘度,和产蛋鸡在后期高峰生产阶段(37至40周龄)的排泄物稠度。金黄色母鸡(RIR×Fayoumi;n=200)饲喂对照饮食(无大豆壳或酶)和含有四种组合的饮食,即,3%大豆壳含20mg/kgβ-甘露聚糖酶(D1),3%大豆壳含30mg/kgβ-甘露聚糖酶(D2),含20mg/kgβ-甘露聚糖酶(D3)的9%大豆壳,和9%的大豆壳含有30mg/kgβ-甘露聚糖酶(D4),四个星期,每个10只鸟的四个重复。总的来说,a显著较高(p<0.05)的采食量,体重增加,饲料转化率,与对照和大豆壳和β-甘露聚糖酶的剩余组合相比,D2组计算了水摄入量。在整个实验期间没有记录到死亡率。经济上,与D3和D4组相比,D1和D2组显示出最好的结果。鸡蛋质量参数,如鸡蛋重量,外壳重量和外壳厚度,蛋黄重量,蛋白体重和身高,Haugh单位保持不变(p>0.05)。同样,D2组显着降低总胆固醇,LDL,和VLDL水平和增强的肠道形态与更大的绒毛宽度,高度,地穴深度,和整个肠段的表面积。粗蛋白(CP),粗纤维(CF),粗脂肪,与对照组相比,D1和D2组的灰分消化率更高(p<0.05)。Digesta粘度,排泄物稠度,和其他鸡蛋质量参数保持不变。总之,3%的豆壳和30mg/kg的β-甘露聚糖酶的组合饮食可能通过改善一些生产性能和鸡蛋质量指标以及经济学对蛋鸡具有潜在的益处,降低血液胆固醇,LDL,和VLDL水平,提高养分消化率,改善肠道形态而不影响鸡蛋质量。
This study investigated the effects of the β-mannanase enzyme and soyhulls on production performance, economics, egg quality, hematology and serum biochemistry, nutrient digestibility, gut morphology, digesta viscosity, and excreta consistency in laying hens during the late peak production phase (37 to 40 weeks of age). Golden brown hens (RIR × Fayoumi; n = 200) were fed a control diet (no soyhulls or enzymes) and diets containing four combinations, i.e., 3% soyhulls with 20 mg/kg β-mannanase (D1), 3% soyhulls with 30 mg/kg β-mannanase (D2), 9% soyhulls with 20 mg/kg β-mannanase (D3), and 9% soyhulls with 30 mg/kg β-mannanase (D4), for four weeks in four replicates of 10 birds each. Overall, a significantly higher (p < 0.05) feed intake, weight gain, feed conversion ratio, and water intake were calculated in the D2 group as compared to the control and remaining combinations of soyhulls and β-mannanase. No mortality was recorded during the entire experiment. Economically, the D1 and D2 groups showed the best results as compared to the D3 and D4 groups. Egg quality parameters like egg weight, shell weight and shell thickness, yolk weight, albumen weight and height, and the Haugh unit remained unchanged (p > 0.05). Similarly, the D2 group showed significantly lower total cholesterol, LDL, and VLDL levels and enhanced gut morphology with greater villus width, height, crypt depth, and surface area across intestinal segments. Crude protein (CP), crude fiber (CF), crude fat, and ash digestibility were higher (p < 0.05) in the D1 and D2 groups compared to the control. Digesta viscosity, excreta consistency, and other egg quality parameters remained unaffected. In conclusion, the dietary inclusion of a combination of 3% soyhulls and 30 mg/kg β-mannanase may have potential benefits for laying hens by improving some production performance and egg quality indicators and economics, lowering blood cholesterol, LDL, and VLDL levels, enhancing nutrient digestibility, and improving gut morphology without affecting egg quality.