scholarly journals Microbial contamination of poultry litter during fattening period

2019 ◽  
Vol 35 (3) ◽  
pp. 253-265
Author(s):  
Dubravka Milanov ◽  
Slobodan Knezevic ◽  
Suzana Vidakovic ◽  
Marko Pajic ◽  
Milica Zivkov-Balos ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Microbial Contamination ◽  
Microbial Count ◽  
Microbiological Contamination ◽  
Microbial Composition ◽  
Yeast Cultures ◽  
Probiotic Yeast ◽  
Fattening Period ◽  
Favourable Environment ◽  
Broiler Feed

The results of the research into the microbiological contamination of litter used by broiler chickens are presented. Litter samples were taken prior to the introduction of chicks (day 0) and in 7-day intervals until the end of the fattening period. The total numbers of aerobic mesophilic microorganisms, yeasts, moulds and Clostridium perfringens spores, and the presence of bacteria of the Salmonella genus were determined. The total microbial count in newly laid litter was 7 log10 CFU/g, which increased to 9 log10 CFU/g by the 4th week. However, at the end of the 5th week, it was at the same level as in newly laid litter. C. perfringens spores, presumably originating from chicks? faeces, were first detected on day 7. In the next 7 days their number increased, reaching 3-4 log10 CFU/g, and remained at approximately same levels until the end of the research. The initial mould contamination was 5-6 log10 CFU/g. However, from day 21 moulds were not isolated, but only yeasts of the Saccharomyces genus. It is supposed that these were deposited with chicks? faeces, due to their presence in complete broiler feed. No bacteria of the Salmonella genus were ever isolated from the litter. In conclusion, the total numbers of microorganisms in deep litter reach their peak in approximately a month, which is followed by their decrease. Deep litter is a favourable environment for probiotic yeast cultures. Added to feed intended for broilers, they can positively influence the microbial composition of litter, providing healthier environment to fattening broilers.

scholarly journals Влияние коллоидного раствора наночастиц серебра на микробиоценоз пищеварительного тракта цыплят-бройлеров

2017 ◽  
Vol 7 (1) ◽  
pp. 71-76 ◽  
Author(s):  
M. D. Kucheruk ◽  
D. A. Zasiekin
Keyword(s):  
Broiler Chickens ◽  
Microbial Contamination ◽  
Intestinal Flora ◽  
Pathogenic Microorganisms ◽  
Microbial Composition ◽  
Water Pipes ◽  
Intestinal Contents ◽  
Intestinal Rehabilitation ◽  
Productivity Indices

<p>We tested the colloidal silver nanoparticles as modern drugs for effective long-term reduction of microbial contamination in the air of broiler houses by intestinal rehabilitation of broiler chickens and simultaneous disinfection of water pipes and drinking water. The effective concentration of these solutions was determined. Cobb-500 broilers were used for the experiment. During the experiment, we set quantitative and qualitative composition of microflora of the intestinal contents of broiler chickens. Air samples were examined by sedimentation. We studied the productivity indices of chickens and product quality. Colloidal nanoscale silver solutions delicately spend intestinal sanitation, eliminating pathogens, virtually affecting the symbiotic intestinal flora. Siler nanoparticles helps to rationally correct the microbiocenosis of the intestines of broiler chickens: the composition of symbiotic microorganisms remains virtually unchanged against a statistically significant decrease in the amount of pathogenic and opportunistic microflora. This contributes to the intensification of the digestive process and increases the immune response to the continuously entering with food and water pathogenic microorganisms. The dependence between microbial composition of the intestines of birds and sanitary-hygienic state of air environment of broiler houses were proved. </p>

scholarly journals Effect of Species, Fertilization and Harvest Date on Microbial Composition and Mycotoxin Content in Forage

Agriculture ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 102 ◽  
Author(s):  
Daria Baholet ◽  
Ivana Kolackova ◽  
Libor Kalhotka ◽  
Jiri Skladanka ◽  
Peter Haninec
Keyword(s):  
Risk Factor ◽  
Plant Material ◽  
Microbial Contamination ◽  
Harvest Date ◽  
Microbial Count ◽  
Microbial Composition ◽  
Botanical Species ◽  
Forage Species ◽  
Microbial Groups ◽  
Feed Safety

The aim of the project was to evaluate the potential of microbial threat to feed safety in the year 2018. Analyses of the epiphytic community of several forage species (clovers, cocksfoot, fescue, festulolium, perennial ryegrass, timothy and trefoil) in variants of fertilized and non-fertilized vegetation were performed. The hypothesis is based on the fact that microorganisms are normally present on plant material during its growth all the way from the seed to the senescence; they are influenced by a plant’s fitness, and they affect its harvest and utilization. Microflora was analyzed by cultivation on specific substrates, total microbial count and five specific microbial groups were observed and quantified. Forage species did not affect plant microflora. The highest risk factor of microbial contamination of feed was proved to be harvest date. Mycotoxin contamination of fresh feed was determined (deoxynivalenol and zearalenone) using ELISA. Zearalenone (ZEA) levels were negatively correlated to fertilization intensity, although these results were not statistically significant. Deoxynivalenol (DON) levels were the lowest in a moderate fertilization regime. Significant differences in mycotoxin content were found among botanical species.

Changes in Blood Chemistry in Broiler Chickens during the Fattening Period

2011 ◽  
Vol 59 (3) ◽  
pp. 183-187 ◽  
Author(s):  
Anna Piotrowska ◽  
Katarzyna Burlikowska ◽  
Roman Szymeczko
Keyword(s):  
Broiler Chickens ◽  
Blood Chemistry ◽  
Fattening Period

Using Indicator Bacteria and Salmonella Test Results from Three Large-Scale Beef Abattoirs over an 18-Month Period To Evaluate Intervention System Efficacy and Plan Carcass Testing for Salmonella

2007 ◽  
Vol 70 (12) ◽  
pp. 2732-2740 ◽  
Author(s):  
JOHN R. RUBY ◽  
JUN ZHU ◽  
STEVEN C. INGHAM
Keyword(s):  
Lactic Acid ◽  
Large Scale ◽  
Microbial Contamination ◽  
Test Results ◽  
Microbiological Contamination ◽  
Negative Results ◽  
Intervention Process ◽  
Beef Carcasses ◽  
Causative Factors ◽  
Plate Counts

To develop a process for predicting the likelihood of Salmonella contamination on beef carcasses, we evaluated the influence of several possible causative factors (i.e., year, abattoir, day of week, month, and intervention system components) on the risk of Salmonella and indicator organism contamination. Hide and carcass sponge samples were collected in 2005 to 2006 in six steps at three abattoirs in the East (A), Midwest (B), and Southwest (C) United States. Each abattoir used the same intervention system. Samples were analyzed for aerobic plate counts (APCs; n = 18,990) and Enterobacteriaceae counts (EBCs; n = 18,989) and the presence or absence of Salmonella (n = 5,355). Our results demonstrated that many factors play a significant role in the level of microbial contamination of beef carcasses. Overall, Salmonella prevalence and EBC levels were significantly higher in 2006 than in 2005. APCs and EBCs were highest in abattoirs A (3.57 log CFU/100 cm2) and B (1.31 log CFU/100 cm2). The odds of detecting a positive Salmonella isolate were greatest in abattoir C and lowest in abattoir A. Across the three abattoirs, the overall intervention process effectively reduced microbiological contamination. Salmonella prevalence fell from 45% (preevisceration) to 0.47% (postchilled–lactic acid), and there were APC and EBC reductions of 5.43 and 5.28 log CFU/100 cm2, respectively, from hide-on to postchilled–lactic acid samples. At each abattoir, composites of three individual EBC-negative carcass samples yielded Salmonella-negative results 97 to 99% of the time. These results suggest the possibility of using indicator test results to accurately predict the absence of Salmonella in a beef carcass sample.

scholarly journals Evaluation of Heavy Metal and Microbial Contamination in Green Tea and Herbal Tea Used for Weight Loss in the Palestinian Market

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Murad N. Abualhasan ◽  
Nidal jaradat ◽  
Mohammed Hawash ◽  
Rama Khayat ◽  
Eman Khatatbeh ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Weight Loss ◽  
Green Tea ◽  
Microbial Contamination ◽  
Storage Conditions ◽  
World Health ◽  
Microbial Count ◽  
Toxic Heavy Metals ◽  
Herbal Tea ◽  
Herbal Products

The use of green tea and herbal tea for weight loss is increasing worldwide owing to the rising rates of obesity. There are concerns about the safety and quality of these herbal products owing to their increased consumption worldwide. In this study, we evaluated randomly collected samples of green tea and herbal tea and tested them for heavy metal and microbial contamination. Eighteen samples of green tea or herbal tea of widely used brands in Palestine were tested for heavy metal and microbial contamination. The results showed that 7 of the samples had toxic heavy metals such as chromium (Cr) and lead (Pb), and their concentrations were above the allowable limits set by the World Health Organization (WHO). Moreover, 6 of the samples that were tested had microbial contamination with high total aerobic microbial count (TAMC) and total yeast and mold count (TYMC). This could be due to improper handling and storage conditions of these herbal products. This study is the first of its kind in Palestine, and its results are forewarning to all the responsible authorities, including the Ministry of Health (MoH), to take immediate corrective actions such as quality control testing, auditing, and registration of marketed tea products.

Effect of a dried live yeast culture on in vivo apparent digestibility and on in vitro fibrolytic activity of large intestine fluid contents, in horses fed high fibre or high starch pelleted feeds

2000 ◽  
Vol 2000 ◽  
pp. 58-58
Author(s):  
B. Medina ◽  
D. Poillon ◽  
R. Power ◽  
V. Julliand
Keyword(s):  
Large Intestine ◽  
Nutrient Digestibility ◽  
Yeast Culture ◽  
Microbial Composition ◽  
Yeast Cultures ◽  
High Fibre ◽  
High Starch ◽  
Live Yeast

Performance horses are often fed very energetic diets including large amount of grains. Thus, a important quantity of soluble carbohydrate is bound to reach the hindgut, altering biochemical and microbial composition of the intestinal contents (Julliand et al., 1999) and leading to a wide variety of diseases like colic, laminitis and diarrhoea (Clarke et al., 1990). In high concentrate rations, live yeast cultures have been reported to stimulate specific groups of bacteria, and moderate large ruminal pH decreases (Williams et al., 1991). Therefore, this trial was designed to evaluate the effect of a live yeast culture preparation (Yea Sacc1026™) on the activity of the intestinal ecosystem (caecum and colon) of horses fed high fibre (HF) or high starch (HS) pelleted feeds. This current summary reports only the results of the nutrient digestibility in vivo and the ability in vitro of large intestine fluid contents to degrade straw.

Response of supplemental methionine and choline chloride on carcass quality traits, gut microbial count and cost economics of broiler chickens

2017 ◽  
Vol 52 (2) ◽  
pp. 151
Author(s):  
Rupjyoti Hazarika ◽  
Chandra Deo ◽  
M. A. Wani ◽  
Sajad A. Sheikh ◽  
A. B. Mandal ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Choline Chloride ◽  
Carcass Quality ◽  
Microbial Count ◽  
Quality Traits

Caecal microbiome and metabolites associated with different growth performances of broilers

2019 ◽  
Author(s):  
Xue Chen ◽  
Wei Zhao ◽  
Yang-zhi Liu ◽  
Natnael Demelash ◽  
Zhe Sun ◽  
...  
Keyword(s):  
Amino Acids ◽  
Body Weight ◽  
Metabolic Pathways ◽  
Broiler Chickens ◽  
Average Daily Gain ◽  
Poor Performance ◽  
Hexadecanoic Acid ◽  
Microbial Composition ◽  
Growth Performances ◽  
Daily Gain

We investigated changes in the caecal microbial composition and metabolic compounds of broiler chickens weighing approximately 0.8–1.5 kg. Arbor Acres (AA) broilers (n =186) were divided into four groups (A–D) according to body weight on day 35. The results showed that there were significant differences in the average daily feed intake (ADFI), average daily gain (ADG), and feed-to-gain ratio (F:G) of chickens (P less than 0.05). The abundance of 11 genera were found to be significantly different in the four groups (P less than 0.05). The broilers with poor performance had increased levels of D-mannose, hexadecanoic acid, cholesterol, L-valine, L-leucine, glutamic acid, glucopyranose, á-D-allopyranose, and phosphoric acid (P less than 0.05) in the cecum. Microbial compositions were different in the ceca of broilers with different growth performances, and higher growth performance correlated with changes in metabolic pathways related to energy, amino acids, and others.

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