苹果木醋液对畜禽粪便的臭气降解试验

[目的]木醋液对畜禽粪便的臭气降解试验.[方法]将鲜粪和木醋液按0％,2％,4％,6％比例混合,在常温下存放,每天测定试验瓶内的NH3含量,作为除臭标准.[结果]显示4％及6％混合组能有效降解臭气含量,而4％与6％差异不显著,所以生产上建议用4％进行除臭.[结论]木醋液都有很好除臭作用,在畜牧生产实际中有很好的实用价值.     

畜禽粪便堆肥化试验

堆肥化是粪尿无害化处理的方法之一。本试验是利用小型堆肥化试验装置对牛粪、猪粪、鸡粪进行堆肥化处理 ,观察其堆肥化过程试料的水分、灰分、含氮量、pH、EC、发芽率等指标的变化     

畜禽粪便废弃物的治理措施

随着畜牧业的发展和壮大,畜禽粪便废弃物的量也在提升,而畜禽废弃物中有很多污染环境的成分,因此必须要采取有效的措施去进行治理。本文首先对于畜禽粪便废弃物的污染成分进行分析,接着探究畜禽粪便废弃物的治理措施,希望可以引导畜禽类粪便废弃物的治理朝着更加有效的方向发展和进步。     

贵州专家新法处理畜禽粪便

畜禽粪便污染环境的难题，正在被专家所破解。贵阳医学院寄生虫教研室吴建伟博士带领的课题组经过几年潜心研究，最近在这个领域取得了重要成果。畜禽粪便污染治理是我国环保领域的一个新课题。据了解，近年随着我国畜牧产业的迅猛发展，各地畜禽粪便的排放量也随之大增。据不完全统计，１９９９年，我国畜禽粪便的产生量就已达１９亿吨左右，畜禽粪便污染正成为我国环境保护中一个亟待解决的问题。吴建伟说，他带领的课题组研究的畜禽粪便处理方法，是一种“生物生态法”，即主要通过家蝇等粪生昆虫的幼虫对畜禽粪便进行分解、转化并加以利…     

畜禽粪便的综合利用

随着养殖业集约化程度的提高和生产规模的不断扩大．养殖业已经对自然环境造成了严重的污染，其中畜禽粪尿和生产污水产生的数量最多，对环境的威胁也最大。由国家环保总局组织的“全国规模化畜禽养殖业污染情况调查及防治对策”显示，1999年全国畜禽粪便产量为19亿t，是当年工业固体废弃物产生总量的2．4倍，在部分地区如河南、湖南、江西这一比例     

畜禽粪便处理模式分析

畜禽粪便处理是一项综合技术，是影响我国畜禽养殖业发展的重要因素之一。主要阐述了畜禽粪便污染现状及处理污染中存在的问题，并提供了几种常见的畜禽粪便处理模式，以供参考。     

畜禽粪便的再生利用

自50年代以来,许多国家对畜禽粪便的再生利用进行了大量的研究与开发,已取得很大的进展,创造了较大的经济效益和生态效益。但笔者认为,还有下列几个问题有待进一步探索与解决。1.目前的研究偏重于鸡粪,对其他动物粪便的开发利用研究较少,有些还根本没有触及到。今后应扩展研究的广度。2.对畜禽粪便的加工处理,方法很多,但如何降低加工成本,提高再生饲料的营养价值和使用价值,还有待进     

畜禽粪便的处理方法

为了探讨畜禽粪便的处理方法,本文介绍了畜禽粪便变成优质肥料和能源的处理方法,主要阐述了比较常用的脱水干燥法、堆肥发酵法、生产沼气和养殖综合利用等方法,重点介绍了脱水干燥处理法和堆肥发酵处理法.目的是引导广大养殖户重视畜禽粪便的综合利用,使其变废为宝,保护环境.     

Preserving boiled eggs with a sterilization system employing microbial laccase and wood vinegar

A combination of a microbial laccase and wood vinegar was used to treat the shell surface of boiled eggs. The laccase enhanced the sterilization effect of phenolic compounds contained in the wood vinegar and resulted in prevention of microbial infection of the boiled eggs after storage for 21 days at 40°C and 75% relative humidity. Significant phenoxy radicals, formed by the catalytic reaction of the laccase, could be detected in the shell of the boiled eggs.     

广德县畜禽粪污资源化利用调查报告

随着畜禽养殖业的规模化发展,粪污排放过度集中,严重污染环境,其无害化处理和资源化利用越来越受到重视。本文针对广德县内畜禽粪污现状和处理工艺运行状况进行调查,根据调查情况提出针对性污染解决方案,期望实现畜禽粪污的资源化利用,促进养殖业可持续发展。     

木醋液对蛋鸡生产性能、肠道菌群及舍内氨气浓度的影响

试验旨在探讨基础日粮中添加不同比例木醋液对蛋鸡高峰期生产性能、肠道菌群和在粪便上喷洒木醋液对舍内氨气浓度的影响。试验选用体重相近的产蛋高峰期180日龄海兰灰240只,分4个处理组,每组3个重复,每个重复20只。对照组饲喂基础日粮,试验组在基础日粮中分别添加0.5%、1.0%、1.5%的木醋液。试验期45 d。结果表明,与对照组相比,1.0%木醋液组显著提高平均蛋重、平均采食量和产蛋率(P<0.05)。0.5%、1.0%木醋液组的平均产蛋重显著高于对照组(P<0.05)。1.0%木醋液组、1.5%木醋液组的大肠杆菌数量和沙门氏菌数量均显著低于对照组(P<0.05),乳酸杆菌数量显著高于对照组(P<0.05)。与喷洒前相比,木醋液在喷洒后的第7~14 d的7:00和16:00舍内的氨气浓度显著降低(P<0.05),16:00舍内氨气浓度整体上高于7:00的舍内氨气浓度。试验表明,日粮中添加适量的木醋液可以显著提高蛋鸡生产性能和降低舍内氨气浓度,缓解蛋鸡夏季应激反应,维持肠道健康,提高免疫力。     

蒙脱石在畜禽饲粮中的应用效果

蒙脱石(smectite,SM)是一种由颗粒极细的铝硅酸盐构成的层状黏土,具有吸附重金属、霉菌毒素、病原菌、细菌毒素和维护胃肠道黏膜及防治腹泻等功能.研究表明,SM能够缓解多种环境毒物对动物健康和生产造成的不利影响.饲粮中适量添加SM能提高畜禽生长和生产性能、提升畜产品品质、改善机体健康状况.文章简述SM的理化特性、主...     

Increased collagen III in culled chicken meat after feeding dietary wood charcoal and vinegar contributes to palatability and tenderness

We comprehensively evaluated meat quality in chickens fed a diet consisting of wood charcoal and vinegar (WCV) using food scientific and histological approaches. In culled hens, lipid and fatty acid in Musculus semimembranosus, cooking loss and sensory tests of whole thigh meat, and meat texture of breast meat were observed. In male broilers, cross section of M. semimembranosus was used for observations on muscle area, perimysium, non‐collagen total protein and total collagen content, and anti‐collagen I and III reactions. In frozen male broilers, conventional morphology of M. semimembranosus as well as chicken anti‐collagen III reaction to selected muscles of thigh meat and breast meat were compared between the control and WCV‐fed birds. Increased lipid and fatty acids, decreased cooking loss, high score in total evaluation for sensory test of thigh meat, and decreased meat texture values were observed for culled hens fed WCV. The higher values of muscle area, total collagen and collagen III were observed for broilers fed WCV. No perimysium collapse for M. semitendinosus or increased collagen III reactions of M. tensor fasciae latae, the flexor muscle group and M. pectoralis superficialis were observed for frozen muscles in the WCV group. These total results suggest that WCV produces palatable and tender meat by increasing collagen III.     

The effect of metal-containing nanoparticles on the health,performance and production of livestock animals and poultry

The application of high doses of mineral feed additives in the form of inorganic salts increases the growth performance of animals, but at the same, due to their low bioavailability, can contaminate the environment. Therefore, there is a need to find a replacement of administering high doses of minerals with an equally effective alternative. The application of lower doses of metal-containing nanoparticles with the same effect on animal production could be a potential solution. In the present review, zinc, silver, copper, gold, selenium, and calcium nanoparticles are discussed as potential feed additives for animals. Production of nanoparticles under laboratory conditions using traditional chemical and physical methods as well as green and sustainable methods – biosynthesis has been described. Special attention has been paid to the biological properties of nanoparticles, as well as their effect on animal health and performance. Nano-minerals supplemented to animal feed (poultry, pigs, ruminants, rabbits) acting as growth-promoting, immune-stimulating and antimicrobial agents have been highlighted. Metal nanoparticles are known to exert a positive effect on animal performance, productivity, carcass traits through blood homeostasis maintenance, intestinal microflora, oxidative damage prevention, enhancement of immune responses, etc. Metal-containing nanoparticles can also be a solution for nutrient deficiencies in animals (higher bioavailability and absorption) and can enrich animal products with microelements like meat, milk, or eggs. Metal-containing nanoparticles are proposed to partially replace inorganic salts as feed additives. However, issues related to their potential toxicity and safety to livestock animals, poultry, humans, and the environment should be carefully investigated.     

多胺在畜禽营养中的作用

本文就畜禽体内多胺的来源及代谢,多胺对畜禽小肠形态、功能以及畜禽生长性能的影响进行综述。     

畜禽DNA甲基化研究进展

基因组甲基化是通过甲基转移酶催化胞嘧啶转化为5-甲基胞嘧啶,是表观遗传学的重要组成部分,对许多生理活动具有重要影响。文中主要从甲基化在畜禽上的研究进展,以及近几年在长链非编码RNA等研究进展,概述DNA甲基化研究的发展。     

芽孢杆菌对畜禽生产性能的影响

由于抗生素的大量使用 ,随之出现的负面效应也日益突出 ,表现为病原微生物产生耐药性和药物在动物产品中残留 ,从而对人类的健康产生潜在的危害。因此 ,抗生素替代品益生菌、酶制剂、酸制剂等的研究与开发成为近年来绿色饲料添加剂的热点 ,其中益生菌备受关注。作为益生菌的一种 ,芽孢杆菌制剂在动物生产中的作用是畜牧业科研和生产人员所关注的焦点。1　芽孢杆菌的生物学特性芽孢杆菌是人类发现最早的细菌之一 ,在自然界中分布广泛 ,主要的生活场所是土壤、水体和食品等。芽孢杆菌特征是细胞内产生圆形、椭圆形或柱状的、高光学反射性的内…