有机酸在养鸡业中的应用

近年来,有机酸是国内外研究最为活跃的添加剂之一.本文就有机酸的特征、作用机制和效果作一介绍.     

茶叶在养鸡业中的应用研究

茶,别名茗、苦荼、茶树.茶叶除了为日常饮料外,还是一味传统中药.近年来,国内外畜牧科技人员将次品茶、茶叶末、茶叶渣制成畜禽饲料添加剂、用于畜禽养殖业,取得理想添加效果.实践证明,茶叶能增强动物免疫力、提高生产性能、改善动物产品质量,预防疾病等作用.本文综述茶叶在养鸡业中的应用效果.     

微量元素氨基酸螯合物在养鸡业中的应用

微量元素氨基酸螯合物是20世纪70年代由美国首先研制的第三代微量元素饲料添加剂,集氨基酸和微量元素为一体,是微量元素同氨基酸羟基经配位反应形成一类独特螯环结构,是一种新型的微量元素添加剂。     

中草药添加剂在养鸡业上的应用

中草药饲料添加剂的独到之处,在于天然无毒、无副作用,不危害人类健康.因而,越来越普遍的被应用于在养鸡生产中. 一、单味中草药添加剂的应用 此类添加剂具有取材容易,应用方便,成本低,易于掌握等特点.故易于广大养鸡厂自行应用.这些中草药应用很广,资源丰富.     

中草药饲料添加剂在养鸡业中的应用现状

饲料添加剂系添加于饲料中的各种微量成分,其作用为完善日粮的全价性。随着科技水平的不断提高,畜牧业和饲料工业的蓬勃发展,饲料添加剂已成为新兴的饲料工业产品,是配合饲料的重要组成部分。     

酸化剂在养鸡业中的应用及前景

预防疾病发生的一条重要措施就是确保饲料干净,尽可能不被病原菌污染。有机酸对大肠杆菌、沙门氏菌等有害微生物抑制作用效果良好,在饲料中添加有机酸,能够抑制饲料中大量有害微生物的生长,从而维持家禽消化道中微生物菌群的正常平衡,使得家禽的生产性能得到最大程度地提高。作为有机酸、无机酸制成的无毒无副作用的酸化剂,近年来国内外对其进行广泛性研究、制作,并作为添加剂应用来保护鸡群的胃肠健康,取得了良好的效果。1酸化剂的作用机理酸化剂的作用机理为:具有抑杀胃肠道有害细菌,促进有益菌生长、繁殖,降低病理性腹泻的发生率,降低胃…     

大蒜与大蒜素在养鸡业中的应用

源于天然植物的大蒜具有多种生物学功能，无公害，在动物体内无残留，不易产生耐药性，在养殖业中有良好的饲养效果。１有效成份１．１大蒜的有效成份１００g鲜大蒜中含水７０g、蛋白质４．４g、脂肪０．２g、碳水化合物２３g、粗纤维０．７g、灰分１．３g、大蒜油０．２g，大蒜具有丰富的营养价值。大蒜挥发油占０．２％，主要成份有二烯丙基二硫化物（大蒜辣素）、二烯丙基三硫化物（大蒜新素）、二烯丙基硫代亚磺酸酯（大蒜素）、甲基烯丙基三硫化物和甲基乙烯丙基三硫化物，其中大蒜新素抗菌作用最强。１．２大蒜粉的有效成份蒜粉是大蒜…     

运用酸化剂减轻家禽腹水症状

尽管对家禽腹水综合征进行了多年的研究,但是该病仍然给全球养禽业带来巨大的经济损失。据估计,每年世界各地产出的400亿羽肉鸡中,有5%死于腹水,并且20%烘培用鸡也死于腹水。     

The use of inulin in poultry feeding: a review

Since the European Union enforced the ban on antibiotic growth promoters in 2006, the research has been focused on natural feed additives which would have a proven positive impact on both production and animal health. Inulin is both the most commonly used and the most effective probiotic additive. The mechanism of inulin interactions with the avian body is complex, multidirectional and not fully understood. Despite a number of unresolved issues, many authors have demonstrated the positive impact of inulin on the host organism. Dietary supplementation of poultry feeding with inulin contributes to the modulation of intestinal microbiota through favouring a quick proliferation of beneficial Bifidobacterium and Lactobacillus strains and inhibiting the growth of pathogenic microbes. There are indications that inulin‐provoked changes in the host gut microbiota in poultry may alter the structure and histomorphology of the intestinal mucosa and improve its absorption capacity in poultry. It has also been demonstrated that inulin may affect the immune system and the systemic metabolism of minerals and lipids. The reports on inulin effects on the body and performance of poultry are often contradictory, as the effectiveness of this prebiotic is strongly dependent on the type and dose used, and the duration of its administration.     

酶制剂在家禽日粮中的应用

<正>国际家禽科学论坛于2008年1月21-22日在美国亚特兰大世界议会中心举办。本次论坛由美国南部家禽科学会(southern poultry science society)、南部禽病协商会(southern conference on avain disease)和美国家禽与蛋品协会联合发起。     

Potential impacts of antibiotic use in poultry production

The ways in which antibiotics are used in poultry production have changed considerably during the past decade, mainly because of concerns about potential negative human health consequences caused by these uses. Human health improvements directly attributable to these antibiotic-use changes are difficult to demonstrate. Given that some antibiotics will continue to be used in the poultry industry, methods are needed for estimating the causal relationship between these antibiotic uses and actual animal and human health impacts. This is a challenging task because of the numerous factors that are able to select for the emergence, dissemination, and persistence of antibiotic resistance. Managing the potential impacts of antibiotic use in poultry requires more than a simple estimation of the risks that can be attributed to the use of antibiotics in poultry. Risk models and empirical studies that evaluate interventions that are capable of minimizing the negative consequences associated with specific antibiotic uses are desperately needed.     

养鸡生产中如何正确使用抗菌素

抗菌素是某些真菌、放线菌或细菌等微生物所产生的代谢产物。它在极低的浓度下,对特定的微生物如细菌、真菌、立克次体、霉形体、衣原体等,有抑制生长或杀灭的作用。抗菌素在防治传染病及感染性疾病中起重要作用。如果用药不当,也会产生许多不良后果。因此,在应用抗生素时应注意以下几个问题。１要对症用药根据临床诊断,弄清致病微生物的种类及其对药物的敏感性,并根据病禽症状轻重而选择对病原微生物高度敏感、临床疗效好、不良反应较少的抗菌素。如对革兰氏阳性菌引起的感染,可选用青霉素、红霉素和四环素类药物;对革兰氏阴性菌引起的感染…