نتایج جستجو برای: antibiotic growth promoters

تعداد نتایج: 912673  

2013
A. Rahimi

Antibiotics have been common feed additives in poultry rations as growth promoters to improve performance via reducing burden of pathogens. However, it has been increasing pressure to reduce or even eliminate antibiotic usage in poultry feed due to the negative human health issues of antibiotic resistance. Safe broiler production without medication and vaccination was conducted at present study...

Journal: :پژوهش در گیاهان زارعی 0
مهدی تاج بخش استاد گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه ارومیه سویل محمدزاده دانشجوی دکترای زراعت، گروه زراعت، دانشکده کشاورزی، دانشگاه ارومیه

in order to investigate the effects of foliar application with plant growth promoters on morphological characteristics of maize (single-cross 704), an experiment with three replications and sixteen treatments conducted with priming and spraying of growth promoters (organser, mas-raiz, dulzee and control)  as factorial based on complete randomized block design. analysis of variance showed that t...

Journal: :Poultry science 2015
Sandra Diaz-Sanchez Doris D'Souza Debrabrata Biswas Irene Hanning

The development of antibiotic resistant pathogens has resulted from the use of sub-therapeutic concentrations of antibiotics delivered in poultry feed. Furthermore, there are a number of consumer concerns regarding the use of antibiotics in food animals including residue contamination of poultry products and antibiotic resistant bacterial pathogens. These issues have resulted in recommendations...

Journal: :Brazilian Journal of Poultry Science 2022

The objective was to evaluate the productivity, microbiology and histopathology of jejunum, ceca liver in broilers fed a control or high non-starch polysaccharide (HNSPs) diet added with an extract humic substances (EHS). 240 individually allocated, from 21-42 d age were assigned factorial arrangement 2 types diets: 1) A corn/soybean meal (Control) 2) As Control plus 7% distillers dried grain s...

Background: Since the prohibition of antibiotic growth promoter in poultry ration by the European Union, poultry producers have been  trying to replace them by other growth promoters like medicinal herbs. Lipia citridora is a medicinal  herb enriched by several powerful phenolic compounds and with antioxidant and antimicrobial properties which lead to enhancing appetite and growth performance o...

Journal: Journal of Herbal Drugs 2019
Farshid Kheiri Nasir Landy

Background & Aim: Feed additives have been widely used to stimulate appetite, improve growth performance and immune system function in livestock nutrition. For many years antibiotics have been used in livestock production to improve growth performance. Following the ban on the use of antibiotic growth promoters in animal feeds in European Union and increasing demand for organic...

Journal: :Molecular microbiology 1991
E Strauch E Takano H A Baylis M J Bibb

The stringent response was elicited in the antibiotic producer Streptomyces coelicolor A3(2) either by amino acid depletion (nutritional shiftdown) or by the addition of serine hydroxamate; both led to increased levels of ppGpp and to a reduction in transcription from the four promoters of the rrnD rRNA gene set. Analysis of untreated batch cultures revealed elevated ppGpp levels at the end of ...

Journal: Journal of Herbal Drugs 2019
Farshid Kheiri Nasir Landy

Background & Aim: Feed additives have been widely used to stimulate appetite, improve growth performance and immune system function in livestock nutrition. For many years antibiotics have been used in livestock production to improve growth performance. Following the ban on the use of antibiotic growth promoters in animal feeds in European Union and increasing demand for organic...

2000
S. A. DENEV S. A. Denev

DENEV, S. A., 2006. Effect of different growth promoters on the cecal microflora and performance of broiler chickens. Bulg. J. Agric. Sci., 12: 461-474 The objective of this study was an evaluation of the effects of different growth promoters: probiotic Lacto-Sacc® (Alltech, Inc. USA), nutritive premix Pharmastim and nutritive antibiotic Avilamycin on the cecal microflora and performance of bro...

2015
Chi Ho Chan Caleb E Levar Lori Zacharoff Jonathan P Badalamenti Daniel R Bond

Metal reduction by members of the Geobacteraceae is encoded by multiple gene clusters, and the study of extracellular electron transfer often requires biofilm development on surfaces. Genetic tools that utilize polar antibiotic cassette insertions limit mutant construction and complementation. In addition, unstable plasmids create metabolic burdens that slow growth, and the presence of antibiot...

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