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营养与饲料学试题营养与饲料学试题 1.饲料:凡能为饲养动物提供某种或多种营养素的天然物质或其加工产品及能强化饲养效果的某些非营养物质,统称为饲料。 2 . 蛋白质饲料是指饲料干物质中粗纤维含量少于18%而粗蛋白含 量大于20%的饲料。 4. 饲料添加剂(Feed additive)是指为了某种特种需要而添加于饲料内的某种或某些微量的物质。 5. 载体:用于承载微量添加剂活性组分,并改变其物理性状,保证添加剂成分能够均匀的分布到饲料中的可饲物料。 6. 预混和饲料(Premix)是指一种或多种饲料添加剂与载体或稀释剂按一定比...

营养与饲料学试题
营养与饲料学 试题 中考模拟试题doc幼小衔接 数学试题 下载云南高中历年会考数学试题下载N4真题下载党史题库下载 1.饲料:凡能为饲养动物提供某种或多种营养素的天然物质或其加工产品及能强化饲养效果的某些非营养物质,统称为饲料。 2 . 蛋白质饲料是指饲料干物质中粗纤维含量少于18%而粗蛋白含 量大于20%的饲料。 4. 饲料添加剂(Feed additive)是指为了某种特种需要而添加于饲料内的某种或某些微量的物质。 5. 载体:用于承载微量添加剂活性组分,并改变其物理性状,保证添加剂成分能够均匀的分布到饲料中的可饲物料。 6. 预混和饲料(Premix)是指一种或多种饲料添加剂与载体或稀释剂按一定比例配制的均匀混合物 预混合饲料的优点:(1)有利于 标准 excel标准偏差excel标准偏差函数exl标准差函数国标检验抽样标准表免费下载红头文件格式标准下载 化,对各种添加剂活性,使用浓度等的表示都可标准化(有利于配合饲料的生产与应用。 (2)配料速度快,精度高,混合均匀度好。 rAt present, we have formed a "three-three" Park. …… Industrial Park, according to ... ... The instructions of comrade, focus on development needs in the next decade, based on the original, and then extended the 6 square kilometers. Of the Park, to further improve the roads, power supply, communications, water supply and drainage and sewage pipe network and other infrastructure, to achieve full coverage of infrastructure and interconnection with the facilities and raise capacity. Each park to determine 1 leading industries, in particular stone Materials, cans, gloves, through guided, force and other measures to promote the "road company" Park, industrial agglomeration. Currently, to focus on building better ... ... Industrial Park, ... ... Wood Park as the starting area of the industrial park, planners need to take out plan, start construction as soon as possible, undertake in a timely manner ... ... Transfer of the wood industry. This opportunity slip by, so the timing must be tight. Second is to optimize government service. Low efficiency of government services, departments do not coordinate the views of businesses large, poor business environment, it is ... ... Short Board, decide to change. We will continue to deepen reform of the administrative examination and approval system, good digestion, implement the Government canceled, adjustment and devolution of administrative examination and approval matters, strengthen the existing supervision in matters of administrative power, has made it clear to cancel, are not allowed to keep or disguised approval. To do list list of administrative powers and responsibilities (3)添加剂预混合饲料在配制时已注意到其稳定性、静电感应及吸湿结块等问题,使用预混合饲料可以防止产生这些缺点。 7. 在饲料中为什么要添加饲料添加剂 补充饲料中营养成分的不足,提高饲料利用率,改善饲料口味,提高适口性,促进鱼虾正常发育和加速生长,改进产品品质,防治鱼虾疾病,改善饲料的加工性能,减少饲料贮藏和加工运输过程中营养成分的损失。 8. 1、 配合饲料 配合饲料是指根据动物的营养需要,将多种原料按一定比例均匀混合,经加工而成一定形状的饲料产品。 9. 配合饲料如何分类,各具有什么特点,渔用配合饲料按其物理性状可分为以下几种类型: (1) 粉状饲料 将各种饲料原料粉碎到—定粒度,按配方比例充分混合后进行包装。使用时将粉状饲料加适量的水和油充分搅拌,形成具有强粘结性和弹性的团块状饲料,在水中不易溶散,适于鳗鱼摄食。 (2) 颗粒饲料 颗粒饲料呈短棒状,颗粒直径根据所喂鱼、虾类的大小而定,依加工方法和成品的物理性rAt present, we have formed a "three-three" Park. …… Industrial Park, according to ... ... The instructions of comrade, focus on development needs in the next decade, based on the original, and then extended the 6 square kilometers. Of the Park, to further improve the roads, power supply, communications, water supply and drainage and sewage pipe network and other infrastructure, to achieve full coverage of infrastructure and interconnection with the facilities and raise capacity. Each park to determine 1 leading industries, in particular stone Materials, cans, gloves, through guided, force and other measures to promote the "road company" Park, industrial agglomeration. Currently, to focus on building better ... ... Industrial Park, ... ... Wood Park as the starting area of the industrial park, planners need to take out plan, start construction as soon as possible, undertake in a timely manner ... ... Transfer of the wood industry. This opportunity slip by, so the timing must be tight. Second is to optimize government service. Low efficiency of government services, departments do not coordinate the views of businesses large, poor business environment, it is ... ... Short Board, decide to change. We will continue to deepen reform of the administrative examination and approval system, good digestion, implement the Government canceled, adjustment and devolution of administrative examination and approval matters, strengthen the existing supervision in matters of administrative power, has made it clear to cancel, are not allowed to keep or disguised approval. To do list list of administrative powers and responsibilities 状,又分为软颗粒饲,硬颗粒饲料和膨化(或发泡)颗粒饲料三种类型。 (3) 微粒饲粒 10 配合饲料配方设计的原则, (1) 根据饲养标准编制配方 根据饲养标准规定的营养成分的种类、数量和比例来选择和搭配多种饲料原料,贯彻营养平衡的原则。掌握饲料中能量同蛋白质、脂肪、糖的比例关系,各种氨基酸之间的关系,以及矿物质和维生素的需要量与它们之间的相互关系等。 (2) 根据鱼、虾类的生长和消化生理特点编制配方 鱼、虾类在不同生长阶段,年龄和个体大小不同对饲料的营养需要也不一样。 (3) 配合饲料原料的选择应尽量开发和利用经济的、供应稳定的饲料原料,以保证饲料配方相对稳定。 (4 )必须掌握饲料原料的营养成分及其特性,以确保配合饲料的品质。 (5) 编制饲料配方要考虑经济效益。 rAt present, we have formed a "three-three" Park. …… Industrial Park, according to ... ... The instructions of comrade, focus on development needs in the next decade, based on the original, and then extended the 6 square kilometers. Of the Park, to further improve the roads, power supply, communications, water supply and drainage and sewage pipe network and other infrastructure, to achieve full coverage of infrastructure and interconnection with the facilities and raise capacity. Each park to determine 1 leading industries, in particular stone Materials, cans, gloves, through guided, force and other measures to promote the "road company" Park, industrial agglomeration. Currently, to focus on building better ... ... Industrial Park, ... ... Wood Park as the starting area of the industrial park, planners need to take out plan, start construction as soon as possible, undertake in a timely manner ... ... Transfer of the wood industry. This opportunity slip by, so the timing must be tight. Second is to optimize government service. Low efficiency of government services, departments do not coordinate the views of businesses large, poor business environment, it is ... ... Short Board, decide to change. We will continue to deepen reform of the administrative examination and approval system, good digestion, implement the Government canceled, adjustment and devolution of administrative examination and approval matters, strengthen the existing supervision in matters of administrative power, has made it clear to cancel, are not allowed to keep or disguised approval. To do list list of administrative powers and responsibilities 11 饲料系数 饲料系数又称增肉系数,是指摄食量与增重量之比值。 12 配合饲料质量包括哪些内容, 渔用配合饲料质量包括感官指标、物理指标、营养指标和卫生指标等四项。 13 影响投饲率的因素有哪些, 投饲率是指投放水体中的饲料占鱼体的百分数。投饲量是根据水体中载鱼量在投饲率的基础上换算出来的具体数值,随着水体中载鱼量而变动。它受饲料的质量、鱼的种类、鱼体的大小和水温、溶氧量、水质等环境因子以及养殖技术等多种因素的影响。 14 一、培养方式:1纯培养:即无菌培养。要求最为严格,生产性培养中很难做到 单种培养:指可有细菌存在但只有一种藻类的培养。一般室内水泥池培养多为单种培养 混合培养:也称多种培养,是指一培养体系中存在两种或两种以上的微藻细胞同时生长 室外土池施肥培养单细胞藻类是一典型的混合培养 rAt present, we have formed a "three-three" Park. …… Industrial Park, according to ... ... The instructions of comrade, focus on development needs in the next decade, based on the original, and then extended the 6 square kilometers. Of the Park, to further improve the roads, power supply, communications, water supply and drainage and sewage pipe network and other infrastructure, to achieve full coverage of infrastructure and interconnection with the facilities and raise capacity. Each park to determine 1 leading industries, in particular stone Materials, cans, gloves, through guided, force and other measures to promote the "road company" Park, industrial agglomeration. Currently, to focus on building better ... ... Industrial Park, ... ... Wood Park as the starting area of the industrial park, planners need to take out plan, start construction as soon as possible, undertake in a timely manner ... ... Transfer of the wood industry. This opportunity slip by, so the timing must be tight. Second is to optimize government service. Low efficiency of government services, departments do not coordinate the views of businesses large, poor business environment, it is ... ... Short Board, decide to change. We will continue to deepen reform of the administrative examination and approval system, good digestion, implement the Government canceled, adjustment and devolution of administrative examination and approval matters, strengthen the existing supervision in matters of administrative power, has made it clear to cancel, are not allowed to keep or disguised approval. To do list list of administrative powers and responsibilities 2开放式培养:指藻液直接与外界空气相通的一种培养方式,生产性培养的主要方式,培养设备简单,但易受敌害生物的污染 封闭式培养:指单胞藻在一相对封闭的体系中培养,主要用于藻种保藏,有时也用于生产性培养中藻种级培养,培养体系一般在100升以下 3一次性培养(批次培养)指一次接种培养后一次性全部采收 单胞藻培养最常用的方式 半连续培养 是指在一次接种后,藻液培养到一定密度时部分采收,同时添加等量的新培养液的生产方式 连续培养是指在接种后,根据培养液中藻密度或营养盐的消耗量,连续采收藻细胞和添加营养盐 连续培养多用于封闭式自动化培养,设备成本高,藻细胞生长快,产量高 4藻种培养(一级培养)指以保存藻种为目的藻类培养,多采用封闭式不充气培养方式培养 中继培养(二级培养) 指为生产性培养提供大量藻种为目的藻类培养,可采用封闭式或开放式培养方式 rAt present, we have formed a "three-three" Park. …… Industrial Park, according to ... ... The instructions of comrade, focus on development needs in the next decade, based on the original, and then extended the 6 square kilometers. Of the Park, to further improve the roads, power supply, communications, water supply and drainage and sewage pipe network and other infrastructure, to achieve full coverage of infrastructure and interconnection with the facilities and raise capacity. Each park to determine 1 leading industries, in particular stone Materials, cans, gloves, through guided, force and other measures to promote the "road company" Park, industrial agglomeration. Currently, to focus on building better ... ... Industrial Park, ... ... Wood Park as the starting area of the industrial park, planners need to take out plan, start construction as soon as possible, undertake in a timely manner ... ... Transfer of the wood industry. This opportunity slip by, so the timing must be tight. Second is to optimize government service. Low efficiency of government services, departments do not coordinate the views of businesses large, poor business environment, it is ... ... Short Board, decide to change. We will continue to deepen reform of the administrative examination and approval system, good digestion, implement the Government canceled, adjustment and devolution of administrative examination and approval matters, strengthen the existing supervision in matters of administrative power, has made it clear to cancel, are not allowed to keep or disguised approval. To do list list of administrative powers and responsibilities 生产性培养(三级培养) 是以大量生产藻细胞为目的培养,多采用开放式(封闭式)充气培养 一次性培养中单细胞藻类生长繁殖特性 15 可分成五个时期,依次为 1、延缓期 2、指数生长期 3、相对生长下降期 4、静止期 5、死亡期 16 单细胞藻类的培养过程可分为五个步骤 容器和工具的消毒--培养液的配制--接种--培养管理--采收 17 成功接种的关键是 把握好藻种的质量、藻种的数量和接种的时间 质量要求 18 光合细菌 能够进行光合作用的细菌 rAt present, we have formed a "three-three" Park. …… Industrial Park, according to ... ... The instructions of comrade, focus on development needs in the next decade, based on the original, and then extended the 6 square kilometers. Of the Park, to further improve the roads, power supply, communications, water supply and drainage and sewage pipe network and other infrastructure, to achieve full coverage of infrastructure and interconnection with the facilities and raise capacity. Each park to determine 1 leading industries, in particular stone Materials, cans, gloves, through guided, force and other measures to promote the "road company" Park, industrial agglomeration. Currently, to focus on building better ... ... Industrial Park, ... ... Wood Park as the starting area of the industrial park, planners need to take out plan, start construction as soon as possible, undertake in a timely manner ... ... Transfer of the wood industry. This opportunity slip by, so the timing must be tight. Second is to optimize government service. Low efficiency of government services, departments do not coordinate the views of businesses large, poor business environment, it is ... ... Short Board, decide to change. We will continue to deepen reform of the administrative examination and approval system, good digestion, implement the Government canceled, adjustment and devolution of administrative examination and approval matters, strengthen the existing supervision in matters of administrative power, has made it clear to cancel, are not allowed to keep or disguised approval. To do list list of administrative powers and responsibilities 19 光合细菌的特点 1) 地球上最早出现的具有原始光能合成体系的原核生物 2) 具多种异养功能(固氮、脱氮、固碳、硫化物氧化等) 3) 与自然界中的物质循环(氮、磷、硫)有密切关系 4) 在自然净化过程中起重要作用 5) 是一大类在厌氧条件下进行不放氧光合作用 6) 没有形成芽胞能力的革兰氏阴性细菌 20 PSB在水产养殖上的应用 作为养殖水体的水质净化剂 作为人工配合饵料的添加剂 作为鱼、虾、贝幼体的促生长因子,促进幼体生长、变态,提高成活率 作为动物性生物饵料的饵料,用于培养轮虫、卤虫、枝角类等动物性生物饵料 rAt present, we have formed a "three-three" Park. …… Industrial Park, according to ... ... The instructions of comrade, focus on development needs in the next decade, based on the original, and then extended the 6 square kilometers. Of the Park, to further improve the roads, power supply, communications, water supply and drainage and sewage pipe network and other infrastructure, to achieve full coverage of infrastructure and interconnection with the facilities and raise capacity. Each park to determine 1 leading industries, in particular stone Materials, cans, gloves, through guided, force and other measures to promote the "road company" Park, industrial agglomeration. Currently, to focus on building better ... ... Industrial Park, ... ... Wood Park as the starting area of the industrial park, planners need to take out plan, start construction as soon as possible, undertake in a timely manner ... ... Transfer of the wood industry. This opportunity slip by, so the timing must be tight. Second is to optimize government service. Low efficiency of government services, departments do not coordinate the views of businesses large, poor business environment, it is ... ... Short Board, decide to change. We will continue to deepen reform of the administrative examination and approval system, good digestion, implement the Government canceled, adjustment and devolution of administrative examination and approval matters, strengthen the existing supervision in matters of administrative power, has made it clear to cancel, are not allowed to keep or disguised approval. To do list list of administrative powers and responsibilities 病害的防治作用 21 光合细菌在水产养殖中应用注意事项 1、光合细菌为活的生命体,不可与消毒杀菌剂混合使用 2、在改善水质方面,应灵活掌握用量和使用的连续性,PSB只有形成优势种群,才能发挥最大的作用 3、如果养殖对象已发病,说明病原微生物的浓度已达到或超过发病临界点,光合细菌的用量必须很大,否则没有明显的效果。此时最好先用杀菌消毒剂治疗,一周后再用光合细菌 4、改善水质的最佳使用方法:晴天上午使用;水温高于20?;池水酸碱度在8左右;浓缩的光合细菌或储存时间较长的光合细菌,在使用前最好应先活化。通常对菌液进行连续10小时以上的光照 5、用作饲料添加剂时,用量以1.2%,1.5%为宜,把菌液喷于饲料表面,稍浸润后即可正常投喂。拌入光合细菌菌液的饲料应于当天投喂完毕 6、光合细菌菌液不能用金属器皿储存,储存环境注意防止高温(42?),并最好应有一定的光照 rAt present, we have formed a "three-three" Park. …… Industrial Park, according to ... ... The instructions of comrade, focus on development needs in the next decade, based on the original, and then extended the 6 square kilometers. Of the Park, to further improve the roads, power supply, communications, water supply and drainage and sewage pipe network and other infrastructure, to achieve full coverage of infrastructure and interconnection with the facilities and raise capacity. Each park to determine 1 leading industries, in particular stone Materials, cans, gloves, through guided, force and other measures to promote the "road company" Park, industrial agglomeration. Currently, to focus on building better ... ... Industrial Park, ... ... Wood Park as the starting area of the industrial park, planners need to take out plan, start construction as soon as possible, undertake in a timely manner ... ... Transfer of the wood industry. This opportunity slip by, so the timing must be tight. Second is to optimize government service. Low efficiency of government services, departments do not coordinate the views of businesses large, poor business environment, it is ... ... Short Board, decide to change. We will continue to deepen reform of the administrative examination and approval system, good digestion, implement the Government canceled, adjustment and devolution of administrative examination and approval matters, strengthen the existing supervision in matters of administrative power, has made it clear to cancel, are not allowed to keep or disguised approval. To do list list of administrative powers and responsibilities 7、使用前应注意生产日期及光合细菌的活力。失效变质应禁止使用,尤其是作为饲料添加剂使用时 22 有关PSB对病害的防治机理,可能与以下几方面因素有关: 1)营养丰富,含有大量的类胡萝卜素、辅酶Q、抗病毒物质和促生长因子 2)PSB净化水质,改善养殖环境 3)施用PSB的池塘,其放线菌/细菌的比例会明显增大,推测可能是PSB促进了放线菌的生长,而放线菌则抑制了病菌的活动,从而达到防病的目的 4)PSB在水中繁殖时,能释放出一种具有抗病性的酵素 rAt present, we have formed a "three-three" Park. …… Industrial Park, according to ... ... The instructions of comrade, focus on development needs in the next decade, based on the original, and then extended the 6 square kilometers. Of the Park, to further improve the roads, power supply, communications, water supply and drainage and sewage pipe network and other infrastructure, to achieve full coverage of infrastructure and interconnection with the facilities and raise capacity. Each park to determine 1 leading industries, in particular stone Materials, cans, gloves, through guided, force and other measures to promote the "road company" Park, industrial agglomeration. Currently, to focus on building better ... ... Industrial Park, ... ... Wood Park as the starting area of the industrial park, planners need to take out plan, start construction as soon as possible, undertake in a timely manner ... ... Transfer of the wood industry. This opportunity slip by, so the timing must be tight. Second is to optimize government service. Low efficiency of government services, departments do not coordinate the views of businesses large, poor business environment, it is ... ... Short Board, decide to change. We will continue to deepen reform of the administrative examination and approval system, good digestion, implement the Government canceled, adjustment and devolution of administrative examination and approval matters, strengthen the existing supervision in matters of administrative power, has made it clear to cancel, are not allowed to keep or disguised approval. To do list list of administrative powers and responsibilities
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