共查询到20条相似文献，搜索用时 31 毫秒
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Ahmed Mohamed Fouad HebatAllah Kasem El-Senousey Dong Ruan Shuang Wang Weiguang Xia Chuntian Zheng 《Journal of animal physiology and animal nutrition》2021,105(6):1146-1153
Many studies have shown that productivity, immune system, antioxidant status, and meat and egg quality can be optimized by dietary supplementation with amino acids that are not usually added to poultry diets. Understanding the effects of these amino acids may encourage feed manufacturers and poultry producers to include them as additives. One of these amino acids is tryptophan (Trp). The importance of Trp is directly related to its role in protein anabolism and indirectly related to its metabolites such as serotonin and melatonin. Thus, Trp could affect the secretion of hormones, development of immune organs, meat and egg production, and meat and egg quality in poultry raised under controlled or stressed conditions. Therefore, this review discusses the main roles of Trp in poultry production and its mode (s) of action in order to help poultry producers decide whether they need to add Trp to poultry diets. Further areas of research are also identified to address information gaps. 相似文献
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益生元是以天然来源的碳水化合物为基础的聚合物,可以被胃肠道中的一些细菌利用,但不被宿主动物消化。益生元作为家禽饲料添加剂,可促进养分消化、吸收,因为它们选择有益的微生物,这些微生物被认为可以促进禽类营养,并可能限制食源性病原体的形成。已经有大量研究来评估其对人类、动物的影响,但只有有限的研究是在非常规生产条件下进行的,同时关于它们对宿主和胃肠道菌群影响的具体机制仍有很多未知。随着对非常规生产系统进行的更详细和精确的研究,结构不同的益生元可能不仅会对胃肠道微生物群产生影响,而且可能以不同的模式与禽类宿主直接或间接地产生相互作用。 相似文献
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《畜牧与生物技术杂志(英文版)》2021,(3)
Due to ban on using antibiotics in feed industry, awareness of using natural feed additives have led to a great demand. The interest of plants phenolic compounds as a potential natural antioxidant source has been considered in research community due to their predictable potential role as feed additives in poultry and swine production.However, the mode of action for their functional role and dosage recommendation in animal diets are still remain indistinct. Taking into account, the present review study highlights an outline about the mode of action of phenolic compound and their experimental uses in poultry and swine focusing on the growth performance, antioxidant function, immune function, antimicrobial role and overall health status, justified with the past findings till to date.Finally, the present review study concluded that supplementation of phenolic compounds as natural feed additives may have a role on the antioxidant, immunity, antimicrobial and overall production performance in poultry and swine. 相似文献
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《畜牧与生物技术杂志(英文版)》2016,(1)
This paper summarizes the current knowledge regarding the possible modes of action and nutritional factors involved in the use of essential oils(EOs) for swine and poultry.EOs have recently attracted increased interest as feed additives to be fed to swine and poultry,possibly replacing the use of antibiotic growth promoters which have been prohibited in the European Union since 2006.In general,EOs enhance the production of digestive secretions and nutrient absorption,reduce pathogenic stress in the gut,exert antioxidant properties and reinforce the animal's immune status,which help to explain the enhanced performance observed in swine and poultry.However,the mechanisms involved in causing this growth promotion are far from being elucidated,since data on the complex gut ecosystem,gut function,in vivo oxidative status and immune system are still lacking.In addition,limited information is available regarding the interaction between EOs and feed ingredients or other feed additives(especially pro- or prebiotics and organic acids).This knowledge may help feed formulators to better utilize EOs when they formulate diets for poultry and swine. 相似文献
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This paper summarizes the current knowledge regarding the possible modes of action and nutritional factors involved in the use of essential oils (EOs) for swine and poultry. EOs have recently attracted increased interest as feed additives to be fed to swine and poultry, possibly replacing the use of antibiotic growth promoters which have been prohibited in the European Union since 2006. In general, EOs enhance the production of digestive secretions and nutrient absorption, reduce pathogenic stress in the gut, exert antioxidant properties and reinforce the animal’s immune status, which help to explain the enhanced performance observed in swine and poultry. However, the mechanisms involved in causing this growth promotion are far from being elucidated, since data on the complex gut ecosystem, gut function, in vivo oxidative status and immune system are still lacking. In addition, limited information is available regarding the interaction between EOs and feed ingredients or other feed additives (especially pro- or prebiotics and organic acids). This knowledge may help feed formulators to better utilize EOs when they formulate diets for poultry and swine. 相似文献
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随着人民生活水平的提高,饮食消费需求加大,畜禽养殖业得以迅速发展,随之而来的是国内饲料资源尤其是蛋白资源变得更加紧缺。在国外蛋白原料产量高、价格低的情况下,中国饲料业生产过度依赖进口,为了促进国内外饲料贸易的均衡发展,同时降低饲料成本,优化饲料生产结构,寻找和开发新型蛋白饲料资源是目前养殖业亟需解决的艰巨任务之一。昆虫是一种生产资源,其蛋白质含量丰富,可替代部分蛋白饲料资源,如今昆虫饲料资源化逐渐成为研究热点。黑水虻作为一种应用前景广阔的资源型昆虫,具有繁殖快、食性杂、抗逆性强等特点,富含蛋白质、脂肪,并含有抗菌肽、甲壳素、月桂酸等活性物质,常应用于养殖生产。黑水虻替代饲粮中的蛋白质原料能够提高家禽生产性能、改善产品品质和肠道健康、增强机体免疫功能,且有对家禽粪便进行资源化利用等作用。作者综述了黑水虻的生物学特性、营养特性及其对家禽生产应用的影响,以期为黑水虻的进一步资源化开发利用及其在家禽生产中的作用机理及标准化应用研究提供参考依据。 相似文献
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《The Journal of Applied Poultry Research》2008,17(4):522-528
Many smaller farms in the United States are switching to organic crop production to remain competitive in an era of industrial agriculture. In doing so, they are cultivating crops not traditionally grown in the area. In the US Midwest, a popular organic crop is buckwheat. As organic corn continues to increase in price, many organic poultry farms are using alternative grains in their poultry diets, including buckwheat. Although buckwheat has been used as a livestock and poultry feed for many years, there are very few published data available on its use. The purpose of this study was to evaluate the use of buckwheat as the main ingredient in organic broiler diets. Four experimental diets were used, with varying levels of buckwheat: 0, 20, 40, and 60%. The results indicated that up to 60% buckwheat can be included in broiler diets with no significant effect on BW gain. With the 60% inclusion level, however, there was a significant decline in feed efficiency. As the price of organic corn continues to increase, the lower price for buckwheat may make it an economical substitute in organic broiler diets. 相似文献
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为了解掌握伏马毒素（B1+B2）、赭曲霉毒素A、T-2毒素、黄曲霉毒素B1在植物性饲料原料中的污染状况,指导饲料生产企业和养殖企业开展霉菌毒素防控,降低霉菌毒素对饲料产品质量及畜禽养殖危害,减少经济损失,2019年对17种62份植物性饲料原料进行采集,采用液相色谱—串联质谱法、免疫亲和柱净化—高效液相色谱法检测,依据《饲料卫生标准》（GB 13078—2017）判定分析。结果表明：伏马毒素（B1+B2）、赭曲霉毒素A、黄曲霉毒素B1在17种植物性饲料原料中的污染状况差别明显,伏马毒素（B1+B2）、赭曲霉毒素A、黄曲霉毒素B1平均检出率分别为37.09%、8.06%、29.03%,最大检测值分别为15.96 mg/kg、26.60 μg/kg、351.00 μg/kg。从检测结果得出,4种霉菌毒素在17种植物性饲料原料中的污染较重,整体污染率达48.40%,玉米皮、喷浆玉米皮、花生粕3种植物性饲料原料中黄曲霉毒素B1超标,污染率与超标率不一定呈正比,表明霉菌毒素在植物性饲料原料中污染普遍,对饲料产品及养殖安全造成严重影响。针对该问题,提出控制植物性饲料原料质量建议,为今后控制饲料原料中霉菌毒素含量提供参考。 相似文献
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《The Journal of Applied Poultry Research》2009,18(2):325-337
In 2002, the US government encouraged the production of ethanol and other biofuels through a combination of tax benefits and direct subsidies. Most of the ethanol produced in the United States comes from corn, the most abundant crop available. In 2002, 11% of available US corn was used for ethanol production. By 2008, approximately 30% of the US corn crop was used for ethanol production. The increased demand for corn supplies as a result of the diversion of significant amounts of corn for biofuel production in the United States, combined with increased world demands for feed grains, have resulted in unprecedented feed prices for livestock and poultry. Feed ingredient costs as a percentage of live production costs have increased from 51.8% in 2001 to 68.7% in 2008. Live production costs for broilers increased from $0.25 per pound of live weight in September 2006 to $0.45 in 2008. Similarly, live production costs for turkey meat increased from $0.35 per pound in 2006 to $0.58 in 2008, whereas the live production costs for a dozen eggs increased from $0.34 to $0.56. The increased costs of feed ingredients in the United States have resulted in $9.36 billion in cumulative additional costs to the poultry industries since 2006. Despite increases in land planted to corn and soybeans, the demand for feed grains has outpaced the supply. These factors will likely continue to put pressure on poultry producers in the United States as they seek to regain profitability. 相似文献
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《The Journal of Applied Poultry Research》2007,16(1):150-159
The potential exists for vitamins and feed enzymes to counteract some metabolic disorders and challenges in poultry. Recent research indicates that increased levels of vitamins E and C are able to reduce ascites-related mortality in broiler chickens. Fatty liver and kidney syndrome is a nutritionally induced metabolic disorder that has been eliminated under practical production conditions due to regular supplementation of poultry diets with biotin. There is also experimental evidence for beneficial effects of 25-hydroxycholecalciferol on the incidence and severity of skeletal and performance anomalies in broilers. Another challenge is the presence of high levels of indigestible and partly soluble nonstarch polysaccharides in many cereals and other plant feed ingredients, resulting in various antinutritive effects. The use of feed enzymes, in particular endo-1,3-1,4-β-glucanase and endo-1,4-β-xylanase, to counteract these adverse effects is well implemented by the feed industry. A typical example of metabolic challenge is the reduced availability of phytate P in plant feed ingredients and the potential for phytate to act as an antinutritional component. Microbial phytase provides a practical solution for improving P availability in plant ingredients. In addition, recent studies suggest phytate can stimulate endogenous losses, and phytase can help prevent those losses. 相似文献
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植物提取物的抗氧化作用及其在养禽生产中的应用研究进展 总被引：1，自引：0，他引：1
植物提取物添加剂被认定为是"安全、高效、稳定、可控"的饲料添加剂,经过20多年的研究,已经市场化并用于饲料和动物生产。关于植物提取物类添加剂在杀灭或抑制病源性微生物,如沙门氏菌、埃希氏菌、金黄色葡萄球菌的研究方面已经有广泛报道。本文综述了有关植物提取物的体内外抗氧化作用、对禽肉和禽蛋在储藏期间的抗氧化稳定性,及其对家禽生产和繁育性能的影响研究的最新进展。 相似文献