论文标题
部分可观测时空混沌系统的无模型预测
Evaluacion de un producto a base de aceite esencial de oregano sobre la integridad intestinal, la capacidad de absorcion de nutrientes y el comportamiento productivo de pollos de carne
论文作者
论文摘要
进行了八次实验，以测试肉鸡中的性能，肠道健康和养分吸收能力的基于牛至的基础油。前三个，直至14d，没有具体的挑战，测试了对肠道组织学，骨骼完整性和生长的影响。其他两个实验，高达28D鸟的挑战是诱发饲料通道综合征（STR）并测试对抗氧化剂状态和性能的影响，以后在商业条件下自然挑战下的结果对比。最后，在另外两个实验（长达21 d）中，测试了面对球球菌的鸟类，以确定对球虫病，营养消化率和饲料效率（FCR）的影响。使用了玉米大豆饮食。在健康的条件下，观察到Pro效应对肠道绒毛的高度和表面积，粘膜密度和结构，绒毛与隐窝比，杯状细胞密度，粘液产生，体重增加和FCR（p <0.04）以及car体产量和骨密度（p <0.08）。受STR影响的鸟类显示出对超氧化物歧化酶活性，体重增益，FCRE，非正常粪便频率，囊囊直径和肌张力障碍的影响（P <0.05）。受球菌影响的鸟类显示出对球球阳性比率，COCCI显微镜评分，卵囊数量，囊直径，体重增加，FCR，FCR，明显的干物质和粗蛋白蛋白质和能量效率的消化率的影响（p <0.01），以及氮气的保留效率（p <0.01），以及明显的保留（P <0.07）。结果表明，Pro增加了有利于饲料效率和性能的饮食。
Eight experiments were conducted to test an oregano-essential-oil-based product (PRO) on performance, gut health, and nutrient absorption capacity in broilers. The first three, up to 14d and without specific challenges, tested the effects on intestinal histology, skeletal integrity, and growth. Other two experiments, up to 28d birds were challenged to induce feed passage syndrome (STR) and test the effect on the antioxidant status and performance, contrasting later the results under a natural challenge in commercial conditions. Finally, in two other experiments, up to 21 d, birds challenged with coccidia were tested to determine the effects on coccidiosis, nutrient digestibility, and feed efficiency (FCR). Corn-soybean-fish meal diets were used. Under healthy conditions, PRO effects were observed on intestinal villus height and surface area, mucosa density and structure, villus to crypt ratio, goblet cells density, mucus production, body weight gain, and FCR (P<0.04), and carcass yield and bone density (P<0.08). Birds affected by STR showed effects (P<0.05) on superoxide dismutase activity, bodyweight gain, FCRE, non-normal feces frequency, bursal diameter, and dysbacteriosis. Birds affected by coccidia showed effects on cocci-positive ratio, cocci microscopic score, oocysts count, bursal diameter, body weight gain, FCR, apparent digestibility of dry matter and crude protein, protein and energy efficiencies (P<0.01), and nitrogen apparent retention (P<0.07). Results showed PRO added value to the diet favoring feed efficiency and performance.
