scholarly journals Investigation of the effectiveness of antimicrobial treatment of poultry products by electrophysical methods

2021 ◽  
Vol 2064 (1) ◽  
pp. 012084
Author(s):  
R A Vazirov ◽  
Yu S Sokovnin ◽  
A S Krivonogova ◽  
A G Isaeva

Abstract Improved methods of processing food and agricultural products make it possible to achieve an optimal effect at an acceptable level of its quality. In radiobiology, Methods of synergistic effect of two factors are widespread, in particular, the combination of treatment with ionizing radiation (IR), UV and plasma. The use of these methods in the production cycle can significantly improve processing efficiency. In the present work were treated combined feeds of ‘PK-5’ and ‘PK-6’ in order to investigate the synergistic effect of IR treatment and high pressure gas discharge plasma (HP GDP) radiation. As the source of IR was used the nanosecond electron beam (NEB) of the accelerator URT-1 (1 Mev). To create the HP GDP was used a high-voltage nanosecond generator GVI-150 (150 kV). The obtained results indicate the presence of a synergistic effect of the combined effects of plasma radiation and NEB.

2021 ◽  
Vol 24 (2) ◽  
pp. 24001
Author(s):  
V. Palchykov ◽  
M. Krasnytska ◽  
O. Mryglod ◽  
Yu. Holovatch

We suggest an underlying mechanism that governs the growth of a network of concepts, a complex network that reflects the connections between different scientific concepts based on their co-occurrences in publications. To this end, we perform empirical analysis of a network of concepts based on the preprints in physics submitted to the arXiv.org. We calculate the network characteristics and show that they cannot follow as a result of several simple commonly used network growth models. In turn, we suggest that a simultaneous account of two factors, i.e., growth by blocks and preferential selection, gives an explanation of empirically observed properties of the concepts network. Moreover, the observed structure emerges as a synergistic effect of these both factors: each of them alone does not lead to a satisfactory picture.


2014 ◽  
Vol 1 (1) ◽  
pp. 1-14
Author(s):  
Igor Piskarev ◽  
◽  
Irina Ivanova ◽  
Svetlana Trofimova

2020 ◽  
Vol 11 (4) ◽  
pp. 1462
Author(s):  
Igor I. VINICHENKO ◽  
Natalia V. TRUSOVA ◽  
Larysa M. KURBATSKA ◽  
Maryna A. POLEHENKA ◽  
Vitalii O. OLEKSIUK

The article deals with the imperatives of quality insuring of the production cycle and the effective functioning process of the enterprises of agro-product subcomplex of Ukraine. An effective functional system has been built which, based on the quantitative and qualitative criteria of competitiveness of enterprises, determines the scale and effectiveness of their activity, provides opportunities to reproduce the resource potential of the agro-product subcomplex industries. The set of processes of relevant implication ‘resources – structure – efficiency – development of the system’ was singled out in order to improve the qualitative and quantitative properties of the production cycle as a creation of efficiency. An adaptive-renovation approach is proposed, which allows selecting from the system of indicators representative-effective indicators and factors of financial and resource load on the level of self-financing of the production cycle with 95% probability. The criterion of ‘optimal maximum profit’, which meets the requirements of a clear economic interpretation of the performance indicators, provides an increase in the value of cash flow to reduce the dependence of the entities of inter-economic relations on the slowdown in the self-financing of the production cycle. It is proved that the integration of agro-product industries with a long continuous cycle has specified functional changes in their efficiency. We have grouped the entities of inter-economic relations by the level of production cost and profitability of the sold products, which ensure the effective process of functioning of the enterprises of the agro-product subcomplex. The parameters of financial and resource load on indicators of self-financing of the production cycle of enterprises of poultry agro-complex in the average for one region of Ukraine are determined. Alternative business projects for the production of poultry products are proposed while changing the cash flow discount rate.  


2010 ◽  
Vol 139 (5) ◽  
pp. 765-771 ◽  
Author(s):  
D. PERSOONS ◽  
F. HAESEBROUCK ◽  
A. SMET ◽  
L. HERMAN ◽  
M. HEYNDRICKX ◽  
...  

SUMMARYA cross-sectional study on 32 different Belgian broiler farms was performed in 2007 and 2008 to identify risk factors for ceftiofur resistance inEscherichia coli. On each farm, oneE. colicolony was isolated from 30 random birds. Following susceptibility testing of 14 antimicrobials, an on-farm questionnaire was used to obtain information on risk factors. Using a multilevel logistic regression model two factors were identified at the animal level: resistance to amoxicillin and to trimethoprim–sulfonamide. On the farm level, besides antimicrobial use, seven management factors were found to be associated with the occurrence of ceftiofur resistance inE. colifrom broilers: poor hygienic condition of the medicinal treatment reservoir, no acidification of drinking water, more than three feed changes during the production cycle, hatchery of origin, breed, litter material used, and treatment with amoxicillin. This study confirms that not only on-farm antimicrobial therapy, but also management- and hatchery-related factors influence the occurrence of antimicrobial resistance.


2019 ◽  
Vol 6 (2) ◽  
pp. 114-125
Author(s):  
Emi Anitasari ◽  
Erma Prihastanti ◽  
Fajar Arianto

Shallot variety of Bima Brebes is a shallot variety that is widely cultivated by farmers in Indonesia because it is easy to grow and adapt to the local environment. However, in reality many farmers use the previous harvest for the next planting seed so that the yields obtained will be of poor quality. This study aims to determine the effect of giving nitrogen through corona incandescent plasma discharge and goat fertilizer on the growth of shallots so that it can improve the quality of onion seedlings. This study used a Completely Randomized Design (CRD) with a factorial pattern using a corona incandescent plasma discharge factor and goat manure. The results showed an interaction between the two factors that can be seen from the plant height parameters which showed significant results in the treatment of plant seeds that were plasma radiation for 30 minutes and the planting media were given goat manure 65 g. Based on the results of the study it can be concluded that the administration of corona incandescent plasma discharge and goat manure on the cultivation of shallots varieties of Bima Brebes was able to accelerate the time of sprouting by 200.3% and increase the growth of onion plants.


Author(s):  
Hyun-su Kim ◽  
Serhiy Danylyuk ◽  
Sascha Brose ◽  
Peter Loosen ◽  
Klaus Bergmann ◽  
...  

2021 ◽  
Author(s):  
Rajwant Sandhu

Multi-modal integration often results in one modality dominating sensory perception. Such dominance is influenced by task demands, processing efficiency, and training. I assessed modality dominance between auditory and visual processing in a paradigm controlling for the first two factors while manipulating the third. In a uni-modal task auditory and visual processing was equated per individual participant. Pre and post training, participants completed a bimodal selective attention task where the relationship between relevant and irrelevant information, and the task-relevant modality changed across trials. Training in one modality was provided between pre and post-training tasks. Training resulted in non-specific speeding post-training. Pre-training, visual information impacted auditory responding more than vice versa and this pattern reversed following training, implying visual dominance pre, and auditory dominance post-training. Results suggest modality dominance is flexible and influenced by experimental design and participant abilities. Research should continue to uncover factors leading to sensory dominance by one modality.


2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 105-105
Author(s):  
Reinaldo F Cooke

Abstract Feedlot receiving is one of the most critical phases within the beef production cycle, when cattle are exposed to several stress and health challenges that impact their welfare and productivity. These stressors include weaning, road transport, and commingling with different animals, which elicit adrenocortical and acute-phase protein responses known to impair cattle immunocompetence and growth. Accordingly, incidence of bovine respiratory disease (BRD) is elevated during feedlot receiving, despite efforts to minimize stress and vaccination protocols against BRD pathogens. With increased restrictions regarding the use of feed-grade antimicrobials in livestock systems, our research group has focused on developing management systems that minimize stress and enhance performance and immunity of receiving cattle. By providing all vaccines against BRD pathogens prior to feedlot entry, our group reported increased (P ≤ 0.05) vaccine efficacy, body weight (BW) gain, feed efficiency, and reduced BRD incidence during the receiving period compared to on-arrival or delayed vaccination. Reducing the number of cattle sources within receiving pens, as a manner to alleviate commingling stress, reduced (P = 0.04) the number of antimicrobials needed for cattle diagnosed with BRD to regain health. Administration of a bovine appeasing substance (BAS) to beef cattle at weaning alleviated (P ≤ 0.05) the resultant acute-phase protein response, enhanced humoral immunity against BRD pathogens, and improved BW gain during a 6-wk postweaning period. Likewise, BAS administration to steers upon feedlot arrival facilitated (P ≤ 0.05) early detection of BRD signs and lessened the BRD recurrence upon first antimicrobial treatment, resulting in improved (P ≤ 0.05) BW gain and feed efficiency during a 45-d receiving period. Collective, vaccinating cattle against BRD prior to feedlot arrival, reducing the number of cattle sources within receiving pens, and the use of BAS during stressful events are favorable strategies to enhance performance and immunity of feedlot cattle.


2003 ◽  
Vol 77 (2) ◽  
pp. 335-341 ◽  
Author(s):  
C.J.C. Phillips ◽  
M.Y.I. Youssef

AbstractForty single lambs were either artificially reared indoors or were at pasture with their mothers until weaning at 3 months of age, after which one half of each group were joined by five adult, dry ewes, to examine the effects of grazing experience and presence of adult ewes on the response to the introduction of novel grass species. Lamb groups sequentially grazed paddocks with one, two, three and then four grass species in four 1-week periods, and grazing and ruminating times and pasture biting rates were recorded during daylight hours. In the first period the lambs grazed only perennial ryegrass, then timothy, cocksfoot and finally red fescue were introduced in periods 2 to 4 respectively. The total time that lambs spent grazing and ruminating were both increased (P < 0·001) by grazing experience and to a lesser extent by the presence of adult ewes. Pasture biting rate was considerably increased by experience, and to a lesser extent adult presence, with a synergistic effect between these two factors (P < 0·001). Timothy and to a lesser extent perennial ryegrass were the most preferred species, and lambs spent less time grazing cocksfoot than either of these two, and even less time grazing red fescue (P < 0·001). Experience of grazing particularly increased the time spent grazing cocksfoot and red fescue (P < 0·001), but the presence of adult ewes did not increase the time lambs spent grazing novel species (P = 0·59). The pasture biting rate was greater on species that the lambs preferred grazing (P < 0·001), but neither experience nor ewe presence increased the biting rate on novel species in the period of their introduction. It is concluded that although both grazing experience and, to a lesser extent adult presence, increased the total time spent grazing and the pasture biting rate, only grazing experience increased the acceptability of novel species.


2021 ◽  
Author(s):  
Hao Wang ◽  
Fei Zheng ◽  
Yina Diao ◽  
Jianping Li ◽  
Xinxin Tang ◽  
...  

Abstract In this paper, the synergistic effect of the preceding winter positive Northern Hemisphere annular mode (pNAM) and spring negative tropical North Atlantic (nTNA) sea surface temperature anomaly (SSTA) on spring extreme cold events in the mid-high latitudes of East Asia (MHEA) is investigated. The results show that the co-occurrence of the two factors is unfavorable for extreme cold events during spring in the MHEA via the snow cover and atmospheric bridges. Over the Atlantic, the spring nTNA SSTA can lead to an atmospheric response that is similar to the North Atlantic Oscillation (NAO), which enhances the persistence of the pNAM and in turn amplifies the negative spring Eurasian snow cover extent (EASCE) anomaly caused by the preceding winter pNAM. Meanwhile, the spring EASCE is closely related to the spring MHEA anomalous anticyclone. In addition to storing its signal in the spring EASCE, the spring nTNA SSTA can also lead to the spring MHEA anomalous anticyclone via the eastward Rossby wave train. The evidence shows that the Rossby wave energy can propagate eastward to the MHEA as a result of the enhanced negative spring EASCE anomaly and Rossby wave induced by the spring nTNA SSTA, and the two factors have an obvious synergistic effect on the spring MHEA anomalous anticyclone. This anomalous MHEA anticyclone becomes a barrier that can hinder the intrusion of cold air from the polar region and can increase the thickness of the atmospheric layer. The anomalous sinking motion of the spring MHEA anomalous anticyclone can also lead to an increase in net radiation received at the surface and increase the air temperature through the vertical motion of air. The southerly wind over the west side of the spring MHEA anomalous anticyclone leads to horizontal warm advection. All of the above processes favor an increase in air temperature and dampen extreme cold events, implying the synergistic effect of the preceding winter pNAM and spring nTNA SSTA on spring extreme cold events in the MHEA.


Sign in / Sign up

Export Citation Format

Share Document