Effect of herbal feed additives on performance, immunity, serum parameters and E. coli counts of broilers under heat stress

2021 ◽  
Vol 38 (1) ◽  
pp. 61-67
Author(s):  
Hanumanth Rao ◽  
Srinivas Gurram
Keyword(s):  
Heat Stress ◽  
Feed Additives ◽  
Serum Parameters ◽  
E Coli

scholarly journals CHROMNIUM PICLONAT EFFECTS IN DIET OF MALE RABBITS EXPOSED TO HEAT STRESS ON SOME PRODUCTIVE TRAITS AND BLOOD SERUM PARAMETERS

2019 ◽  
Vol 50 (4) ◽  
Author(s):  
Hashem & Al-Saadi
Keyword(s):  
Body Weight ◽  
Heat Stress ◽  
Basal Diet ◽  
Positive Control ◽  
Feed Additives ◽  
Positive Control Group ◽  
Control Group ◽  
Serum Parameters ◽  
Performance Traits ◽  
Productive Traits

current study was conducted to determine the effects of Chromium piclonat supplementation on some  productive  traits and serum parameters of male rabbit exposed to heat stress by used electric heaters  ,twenty four male rabbits were randomly divided into four groups 6 for each, first group put in normal suitable climate condition based diet without additional Chromium and kept as positive control group , while The other  three groups exposed to heat stress  , the basal diet was consisted of 0, 300 , and 500 ppb of Chromium piclonate  respectively as a feed additives . All rabbit received feed and water ad libitum, the results showed  that there were Increasing organic Cr supplementation 300 and 500 pbb  of two treated groups resulted in an increase in body weight compared with negative and positive control group , the  serum glucose and cortisone hormone concentrations of both treated groups were decrease, as dietary Cr level increased (P<0.05), but Cr supplementation did not affect total protein,  albumen and globulin. These data indicated that organic Cr supplementation increased some performance traits, particularly body weight production and decreased in glucose and cortisone hormone while there were not significant effect in the total of serum protein,  Albumin and globulin ,it can be concluded that adding chromium piclonat in dose 300,500pbb in diet of rabbits during  hot periods has a benefits to overcome deterioration in some performance traits  related to oxidative stress results from  heat stress.

Clinicopathological Studies on Neem and Ginger Effects as Feed Additives in Normal and E. coli Infected Weaned Rabbits

2015 ◽  
Vol 43 (3) ◽  
pp. 170-178
Author(s):  
Nariman Edrees ◽  
Ibtisam Gamal El Dien ◽  
Salwa Eid
Keyword(s):  
Feed Additives ◽  
E Coli

Thermal and Starvation Stress Response of Escherichia coli O157:H7 Isolates Selected from Agricultural Environments

2016 ◽  
Vol 79 (10) ◽  
pp. 1673-1679 ◽  
Author(s):  
ACHYUT ADHIKARI ◽  
ANDY BARY ◽  
CRAIG COGGER ◽  
CALEB JAMES ◽  
GÜLHAN ÜNLÜ ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Heat Stress ◽  
Stress Response ◽  
Weibull Model ◽  
Stress Conditions ◽  
Inactivation Kinetics ◽  
Escherichia Coli O157 ◽  
Starvation Stress ◽  
E Coli ◽  
Response To Stress

ABSTRACT Pathogens exposed to agricultural production environments are subject to multiple stresses that may alter their survival under subsequent stress conditions. The objective of this study was to examine heat and starvation stress response of Escherichia coli O157:H7 strains isolated from agricultural matrices. Seven E. coli O157:H7 isolates from different agricultural matrices—soil, compost, irrigation water, and sheep manure—were selected, and two ATCC strains were used as controls. The E. coli O157:H7 isolates were exposed to heat stress (56°C in 0.1% peptone water for up to 1 h) and starvation (in phosphate-buffered saline at 37°C for 15 days), and their survival was examined. GInaFiT freeware tool was used to perform regression analyses of the surviving populations. The Weibull model was identified as the most appropriate model for response of the isolates to heat stress, whereas the biphasic survival curves during starvation were fitted using the double Weibull model, indicating the adaptation to starvation or a resistant subpopulation. The inactivation time during heating to achieve the first decimal reduction time (δ) calculated with the Weibull parameters was the highest (45 min) for a compost isolate (Comp60A) and the lowest (28 min) for ATCC strain 43895. Two of the nine isolates (ATCC 43895 and a manure isolate) had β &lt; 1, indicating that surviving populations adapted to heat stress, and six strains demonstrated downward concavity (β &gt; 1), indicating decreasing heat resistance over time. The ATCC strains displayed the longest δ2 (&gt;1,250 h) in response to starvation stress, compared with from 328 to 812 h for the environmental strains. The considerable variation in inactivation kinetics of E. coli O157:H7 highlights the importance of evaluating response to stress conditions among individual strains of a specific pathogen. Environmental isolates did not exhibit more robust response to stress conditions in this study compared with ATCC strains.

scholarly journals Nutritional strategies to alleviate heat stress effects through feed restrictions and feed additives (vitamins and minerals) in broilers under summer conditions

2019 ◽  
Vol 7 (3) ◽  
pp. 123-131 ◽  
Author(s):  
Mohamed Abdelhameed Salah Abdelhameed ◽  
◽  
Lozovskiy Alexander Robertovich ◽  
Ali Amany Muhammad Ahmed ◽  
◽  
...  
Keyword(s):  
Heat Stress ◽  
Feed Additives ◽  
Stress Effects ◽  
Nutritional Strategies

289 Phytogenic Feed Additives as a Potential Strategy to Mitigate the Negative Effects of Heat Stress in Growing Heifers

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 156-157
Author(s):  
Shelby M Ramirez ◽  
Janaka Wickramasinghe ◽  
Nadiia Stepanchenko ◽  
Maria Oconitrillo ◽  
Jayamuni Silva ◽  
...  
Keyword(s):  
Heat Stress ◽  
Fixed Effects ◽  
Recovery Period ◽  
Random Effect ◽  
Antioxidant Properties ◽  
Feed Additives ◽  
Feed Additive ◽  
Negative Effects ◽  
Humidity Index ◽  
Potential Strategy

Abstract Phytogenic feed additives that contain anti-inflammatory and antioxidant properties may have potential to reduce inflammation and oxidation observed during bouts of heat stress. The trial objective was to determine the effects of a phytogenic feed additive on markers of stress in heifers subjected to diurnal heat stress (dHS). Eighteen Holstein and four Jersey heifers (5–6 months of age; d1 BW=205±9 kg) were assigned to two dietary treatments (n = 11) based on breed and age; 1) a basal TMR diet (CTL), 2) CTL supplemented with 0.25 g/head/d of a proprietary blend of phytogenics (PFA; BIOMIN America, Inc., Overland Park, KS). Heifers were housed individually and fed their respective treatments for 14d prior to dHS (d-14-1), subjected dHS (d1-7), and followed through a recovery period (d8-11). Weights were collected at d1 (baseline), d7 (end of dHS), and d11 (end of recovery). The temperature set point was assigned at 33°C from 0900 to 2100 h and allowed to equilibrate with outside temperature during night (24°C) for a total of 7d dHS. Total DMI (tDMI) and DMI from 0900 to 2100 h (hsDMI) were recorded daily. Serum was collected at d1, 2, 7 and 11 to determine effect of treatment on markers of oxidation, inflammation, and stress. Treatment effects were analyzed using PROC MIXED in SAS with treatment and time as fixed effects and heifer as a random effect. Temperature humidity index during dHS was greater during the day (84.5) versus night (73.3). There were no treatment differences (P&gt;0.05) in d 0–11 on ADG, ADFI, or GF between treatments. However, PFA numerically increased hsDMI, reduced (P&lt; 0.05) haptoglobin and tended to reduce (P&lt; 0.10) lipopolysaccharide binding protein compared with CTL. Overall, dietary PFA may be a potential strategy to mitigate the stresses that heifers experience during dHS.

scholarly journals 209 Effects of heat stress on the intestinal tract of poultry

2019 ◽  
Vol 97 (Supplement_2) ◽  
pp. 120-121
Author(s):  
Marcos Rostagnos
Keyword(s):  
Heat Stress ◽  
Adaptive Response ◽  
Intestinal Tract ◽  
Management Practices ◽  
Scientific Evidence ◽  
Feed Additives ◽  
Stress Conditions ◽  
Heat Stress Response ◽  
Diet Formulation ◽  
Animal Production System

Abstract Stress is a biological adaptive response to restore homeostasis, and occurs in every animal production system, due to the multitude of stressors present in every farm. Heat stress is one of the most common environmental challenges to poultry worldwide. It has been demonstrated that heat stress negatively impacts the welfare and productivity of broilers and laying hens. However, our knowledge of basic mechanisms associated to the reported effects, as well as related to poultry behavior and welfare under heat stress conditions is in fact scarce. The adaptive response of poultry to a heat stress situation is complex and intricate in nature, and it includes effects on the intestinal tract. Intervention strategies to deal with heat stress conditions (e.g., management practices, feed additives, diet formulation, and others) have been the focus of most published studies. Nevertheless, effectiveness of most of the interventions has been variable or inconsistent. This review focuses on the scientific evidence available on the effects of the heat stress response on different facets of the intestinal tract of poultry, including its integrity, physiology, immunology and microbiology.

scholarly journals Escherichia coli resistant to tetracyclines and to other antibiotics in the faeces of U.K. chickens and pigs in 1980

1981 ◽  
Vol 87 (3) ◽  
pp. 477-483 ◽  
Author(s):  
H. Williams Smith ◽  
Margaret A. Lovell
Keyword(s):  
Escherichia Coli ◽  
Tetracycline Resistance ◽  
Feed Additives ◽  
Large Reservoir ◽  
E Coli

SummaryA survey conducted in 1980, 9 years after the banning of the use of tetracyclines as feed additives in the U.K., indicated that table chickens and pigs were still a large reservoir of tetracycline-resistant Escherichia coli; the incidence of transferable tetracycline resistance was greater in chicken E. coli strains (68%) than in pig E. coli strains (20%). Large amounts of sulphonamide-resistant and of furazolidone-resistant E. coli were found in the faeces of chickens; E. coli resistant to both sulphonamides and streptomycin were common in the faeces of chickens and pigs. E. coli with transferable or mobilizable trimethoprim resistance were present in the faeces of most pigs and in the faeces of 10 % of chickens.

scholarly journals Interplay of Structural Disorder and Short Binding Elements in the Cellular Chaperone Function of Plant Dehydrin ERD14

Cells ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1856
Author(s):  
Nikoletta Murvai ◽  
Lajos Kalmar ◽  
Bianka Szalaine Agoston ◽  
Beata Szabo ◽  
Agnes Tantos ◽  
...  
Keyword(s):  
Heat Stress ◽  
Intrinsically Disordered Proteins ◽  
Stress Protein ◽  
Structural Disorder ◽  
Disordered Proteins ◽  
Sequence Motifs ◽  
E Coli ◽  
Intrinsically Disordered

Details of the functional mechanisms of intrinsically disordered proteins (IDPs) in living cells is an area not frequently investigated. Here, we dissect the molecular mechanism of action of an IDP in cells by detailed structural analyses based on an in-cell nuclear magnetic resonance experiment. We show that the ID stress protein (IDSP) A. thaliana Early Response to Dehydration (ERD14) is capable of protecting E. coli cells under heat stress. The overexpression of ERD14 increases the viability of E. coli cells from 38.9% to 73.9% following heat stress (50 °C × 15 min). We also provide evidence that the protection is mainly achieved by protecting the proteome of the cells. In-cell NMR experiments performed in E. coli cells show that the protective activity is associated with a largely disordered structural state with conserved, short sequence motifs (K- and H-segments), which transiently sample helical conformations in vitro and engage in partner binding in vivo. Other regions of the protein, such as its S segment and its regions linking and flanking the binding motifs, remain unbound and disordered in the cell. Our data suggest that the cellular function of ERD14 is compatible with its residual structural disorder in vivo.

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