增长业绩,Gizzard的重量,盲肠消化短链脂肪酸(SCFA),和表观保留(AR)的成分进行了调查,在肉鸡和火鸡响应谷物类型,纤维水平,和多酶补充剂(MES)从孵化到28天的生命。将480天大的雄性肉鸡和相等数量的火鸡分别放置在代谢笼中(10只鸟/笼),并分配给8种饮食。特定物种的饮食是以玉米或小麦为基础的基础饮食,不含(LF)或含10%玉米DDGS或小麦中株(HF),不含或含MES。这有效地创建了2(颗粒类型)×2(纤维水平)×2(MES)阶乘排列的处理。饮食具有TiO2作为不可消化的标记物。体重,饲料摄入量,记录和死亡率以计算体重增加(BWG)和饲料转化率(FCR)。在第25至27天收集排泄物样品用于AR,在第28天,所有鸟类都进行了尸检,检查其重量和盲肠消化。肉鸡谷物和MES之间的相互作用使得含有MES的小麦日粮具有最低的FCR(P=0.005)。在肉鸡中,LF饮食的FCR优于HF饮食(P=0.010)。小麦日粮中丁酸含量最高(P=0.006)。饲喂HF和玉米日粮的肉鸡比饲喂LF和小麦日粮的肉鸡具有更重的g。MES改善了HF的AMEn(P<0.05),玉米,和肉鸡的小麦饮食。饲喂小麦日粮的火鸡具有最低的FCR(P=0.019)。饲喂HF小麦日粮的火鸡具有最重的(P<0.001)g。在土耳其,MES改善了HF和LF玉米日粮中的AMEn,并且仅在LF小麦日粮中与各自的对照相比。处理对火鸡盲肠SCFA没有影响。总之,颗粒类型,纤维,MES不影响这两个物种的生长。然而,物种表现出不同的FCR,Gizzard,以及对光纤和MES的能量利用。
Growth performance, gizzard weight, ceca digesta short-chain fatty acids (SCFA), and apparent retention (AR) of components were investigated in broilers and turkeys in response to cereal grain type, fiber level, and multienzyme supplement (MES) fed from hatch to 28 d of life. 480-day-old male broiler chicks and equal number of turkeys were placed separately in metabolism cages (10 birds/cage) and allocated to 8 diets. The species-specific diets were a corn or wheat-based basal diet without (LF) or with 10% corn DDGS or wheat middlings (HF) and fed without or with MES. This effectively created a 2 (grain types) × 2 (fiber levels) × 2 (MES) factorial arrangement of treatments. The diets had TiO2 as an indigestible marker. Body weight, feed intake, and mortalities were recorded to calculate body weight gain (BWG) and feed conversion ratio (FCR). Excreta samples were collected on d 25 to 27 for AR, and all birds were necropsied for gizzard weight and ceca digesta on d 28. The interaction between grain and MES in broilers was such that wheat diets with MES had the lowest (P = 0.005) FCR. In broilers, LF diets had better (P = 0.010) FCR than HF diets. The wheat diets had the highest (P = 0.006) concentration of butyric acid in broilers. Broilers fed HF and corn diets had heavier gizzard than broilers-fed LF and wheat diets. The MES improved (P < 0.05) AMEn in HF, corn, and wheat diets in broilers. The turkeys fed wheat diets had the lowest (P = 0.019) FCR. Turkeys fed HF wheat diets had the heaviest (P < 0.001) gizzard. In turkeys, the MES improved AMEn in HF and LF corn diets, and only in LF wheat diets compared to respective controls. Treatments had no effect on turkeys cecal SCFA. In conclusion, grain type, fiber, and MES did not affect growth in both species. However, species exhibited differing FCR, gizzard, and energy utilization to fiber and MES.