scholarly journals Impacts of Quarterly Sow Mass Vaccination with a Porcine Reproductive and Respiratory Syndrome Virus Type 1 (PRRSV-1) Modified Live Vaccine in Two Herds

Vaccines ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 1057
Author(s):  
Kasper Pedersen ◽  
Charlotte Sonne Kristensen ◽  
Lise Kirstine Kvisgaard ◽  
Lars Erik Larsen
Keyword(s):  
Negative Impact ◽  
Mass Vaccination ◽  
Respiratory Syndrome Virus ◽  
Nursery Pigs ◽  
Prrs Virus ◽  
Before And After ◽  
Strain Virus ◽  
Modified Live Vaccine ◽  
Paired Design ◽  
The Impact

In recent years, there has been a considerable increase in the use of Modified Live PRRSV Vaccines (MLV) for mass vaccination in Denmark. The potential risks and negative impact of this strategy have been sparsely studied. The aim of this study was to investigate the impact of quarterly sow mass vaccination in two Danish sow herds. The study was performed as an observational prospective cohort of 120 sows in each of two commercial breeding herds in a paired design. Blood samples were taken from sows and oral fluid samples from nursery pigs (four to ten weeks old) before and after vaccination. The presence of PRRSV-1 RNA was measured by real time quantitative reverse transcription-polymerase chain reaction (RT-qPCR), and the level of PRRSV-1 specific antibodies was measured by two different serological assays. PRRS virus was not detected in the sow herds two days before and two weeks after vaccination, but the vaccine strain virus was detected in the nursery pigs. The prevalence of sows without antibodies towards PRRSV-1 went from 6–15% before vaccination to 1–4% after vaccination depending on the serological assay used, despite the fact that they had previously been repeatedly vaccinated. Four sows tested negative for antibodies in both assays after vaccination.

scholarly journals PRRSV detection by qPCR in processing fluids and serum samples collected in a positive stable breeding herd following mass vaccination of sows with a modified live vaccine

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
A. Lebret ◽  
P. Berton ◽  
V. Normand ◽  
I. Messager ◽  
N. Robert ◽  
...  
Keyword(s):  
The United States ◽  
Live Vaccine ◽  
Mass Vaccination ◽  
Respiratory Syndrome Virus ◽  
Serum Samples ◽  
Blood Samples ◽  
Stability Monitoring ◽  
Breeding Herd ◽  
Modified Live Vaccine ◽  
Processing Fluid

AbstractIn the last two decades, in France, Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) stabilization protocols have been implemented using mass vaccination with a modified live vaccine (MLV), herd closure and biosecurity measures. Efficient surveillance for PRRSV is essential for generating evidence of absence of viral replication and transmission in pigs. The use of processing fluid (PF) was first described in 2018 in the United States and was demonstrated to provide a higher herd-level sensitivity compared with blood samples (BS) for PRRSV monitoring. In the meantime, data on vertical transmission of MLV viruses are rare even as it is a major concern. Therefore, veterinarians usually wait for several weeks after a sow mass vaccination before starting a stability monitoring. This clinical study was conducted in a PRRSV-stable commercial 1000-sow breed-to-wean farm. This farm suffered from a PRRS outbreak in January 2018. After implementing a stabilisation protocol, this farm was controlled as stable for more than 9 months before the beginning of the study. PF and BS at weaning were collected in four consecutive batches born after a booster sow mass MLV vaccination. We failed to detect PRRSV by qPCR on PF and BS collected in a positive-stable breeding herd after vaccination with ReproCyc® PRRS EU (Boehringer Ingelheim, Ingelheim, Germany).

Impact of Dividend Tax Change on the Payout Policy of Indian Companies

2019 ◽  
Vol 20 (5) ◽  
pp. 1282-1291
Author(s):  
Sanjay Dhamija ◽  
Ravinder Kumar Arora
Keyword(s):  
Negative Impact ◽  
Payout Policy ◽  
Tax Law ◽  
Dividend Payout ◽  
Inside Ownership ◽  
Regulatory Changes ◽  
Before And After ◽  
The Government ◽  
The Impact ◽  
Dividend Tax

The article examines the impact of regulatory changes in the tax on dividends on the payout policy of Indian companies. The tax law was recently amended to levy tax on dividends received by large shareholders. As the promoters group is the largest shareholder, this is expected to have a negative impact on the payout policy of companies. Furthermore, companies with larger promoter holdings have a higher motivation to reduce their payout. The study covers 370 companies present in the BSE 500 Index and compares the dividend payout of the companies before and after the introduction of tax levy. The study finds that the newly introduced tax indeed caused a shift in the dividend policy of companies, particularly those companies which have high levels of inside ownership. The findings have significant implications for companies, investors and the government.

scholarly journals The Impact of the Capture of Leaders of Criminal Organizations on the Labor Market: Evidence from Mexico

2021 ◽  
Author(s):  
Daniel Osuna Gómez ◽  
Keyword(s):  
Labor Market ◽  
Census Data ◽  
Negative Impact ◽  
Difference Analysis ◽  
Criminal Organizations ◽  
Before And After ◽  
Economic Census ◽  
The Difference ◽  
Integral Assessment ◽  
The Impact

This paper estimates the impact of the capture of leaders of criminal organizations on the labor market in municipalities where these organizations operated between 2004 and 2006. The difference-in-difference analysis compares different employment outcomes in cartel locations and the rest, before and after the capture of cartel leaders. The results show that captures caused a decrease in nominal wages and paid employment in cartel municipalities. Using Economic Census Data, I find that captures also caused a fall in the number of establishments and had a negative impact on other establishment outcomes. This document focuses exclusively on the impact of the capture of leaders of criminal organizations on the labor market until 2011 without studying other possible consequences, and thus does not make an integral assessment of this policy

scholarly journals The Impact of Orthodontic Treatment on Pre-Existing Gingival Recessions: A Retrospective Study

2021 ◽  
Vol 11 (19) ◽  
pp. 9036
Author(s):  
Guostė Antanavičienė ◽  
Eglė Zasčiurinskienė ◽  
Dalia Smailienė ◽  
Nomeda Basevičienė
Keyword(s):  
Retrospective Study ◽  
Orthodontic Treatment ◽  
Negative Impact ◽  
Open Bite ◽  
Class Iii ◽  
Before And After ◽  
Pre Treatment ◽  
Mandibular Teeth ◽  
The Impact ◽  
Plaster Models

(1) Background: This retrospective study aimed to examine the change of gingival recessions (GR) before and after orthodontic treatment (OT). (2) Methods: Patients who had at least one GR on the vestibular surface of maxillary/mandibular teeth mesial to first molars were included. GR was measured on good quality plaster models before and after OT. (3) Results: Significant improvement of mean GR at patient level was found between T0 and T1 (0.45 mm, 95% CI: 0.28, 0.62) (p < 0.001). In 51.4% of patients GRs became better, in 37.8% GRs did not change. and in 10.8% GRs became worse. At tooth level the mean GR improvement was 0.54 mm (CI: 0.42, 0.65; median 0.55 mm Q1; Q3: 0.12, 0.96) (p < 0.001). GR improved in 67 teeth (58.7%), did not change in 41 (36.0%), and worsened in 6 (5.3%). Full healing was observed in 15 teeth. A reduced GR improvement was found in cases with pre-treatment open bite (OR 3.89; CI: 1.35, 11.16; p = 0.008) and dental Class III patients (OR 2.6; CI: 1.11, 6.0; p = 0.026). (4) Conclusion: There was an improvement of GR after OT in more than half of the patients. Class III malocclusion and reduced pre-treatment overbite had a negative impact on GR improvement.

Is a Corruption Crackdown Really Good for the Economy? Firm-Level Evidence from China

2020 ◽  
Author(s):  
Zhiyuan Chen ◽  
Xin Jin ◽  
Xu Xu
Keyword(s):  
Negative Impact ◽  
Foreign Firms ◽  
Private Firms ◽  
Firm Level ◽  
Personal Connections ◽  
Before And After ◽  
Short Run ◽  
The Government ◽  
Negative Impacts ◽  
The Impact

Abstract We study the impact of anticorruption efforts on firm performance, exploiting an unanticipated corruption crackdown in China’s Heilongjiang province in 2004. We compare firms in the affected regions with those in other inland regions before and after the crackdown. Our main finding is an overall negative impact of the crackdown on firm productivity and entry rates. Furthermore, these negative impacts are mainly experienced by private and foreign firms, while state-owned firms are mostly unaffected. We present evidence concerning two potential explanations for our findings. First, the corruption crackdown may have limited bribery opportunities that helped private firms operate. Second, the corruption crackdown may have interfered with personal connections between private firms and government officials to a greater extent than institutional connections between state-owned firms and the government. Overall, our findings suggest that corruption crackdowns may not restore efficiency in the economy, but instead lead to worse economic outcomes, at least in the short run (JEL L2, M1, O1).

scholarly journals The Impact on Carbon Emissions of China with the Trade Situation versus the U.S.

2021 ◽  
Vol 13 (18) ◽  
pp. 10324
Author(s):  
Jieming Chou ◽  
Fan Yang ◽  
Zhongxiu Wang ◽  
Wenjie Dong
Keyword(s):  
Climate Change ◽  
Carbon Emissions ◽  
Industrial Development ◽  
Negative Impact ◽  
Output Analysis ◽  
Before And After ◽  
Import And Export ◽  
Trade Analysis ◽  
Global Trade Analysis Project ◽  
The Impact

The China–US trade conflict will inevitably have a negative impact on China’s trade imports and exports, industrial development, and economic growth, and will affect the achievement of climate change goals. In the short term, the impact of the trade conflict on China’s import and export trade will cause the carbon emissions contained in traded commodities to change accordingly. To assess the impact of the trade conflict on China’s climate policy, this paper combines a model from the Global Trade Analysis Project (GTAP) and the input–output analysis method and calculates the carbon emissions in international trade before and after the conflict. The conclusions are as follows: (1) The trade war has led to a sharp decline in China–US trade, but for China as a whole, imports and exports have not changed much; (2) China’s export emissions have changed little, its import emissions have dropped slightly, and its net emissions have increased; and (3) China’s exports are still concentrated in energy-intensive industries. Changes in trade will bring challenges to China’s balancing of climate and trade exigencies. China–US cooperation based on energy and technology will help China cope with climate change after the trade conflict.

scholarly journals 111 Common nutritional and infectious health challenges in nursery pigs

2019 ◽  
Vol 97 (Supplement_2) ◽  
pp. 62-63
Author(s):  
Eric R Burrough ◽  
Nicholas K Gabler
Keyword(s):  
Influenza A ◽  
Diagnostic Testing ◽  
Clinical Signs ◽  
Enterotoxigenic Escherichia Coli ◽  
Detection Methods ◽  
Respiratory Syndrome Virus ◽  
Common Source ◽  
Poor Growth ◽  
Nursery Pigs ◽  
The Impact

Abstract Poor starting nursery pigs are a common source of frustration for pork producers due to suboptimal lean tissue production and failure to thrive. This is generally a multifactorial issue with potential nutritional, infectious and management contributors. Commonly encountered respiratory and enteric pathogens include porcine reproductive and respiratory syndrome virus (PRRSV), influenza A virus (IAV), porcine enteric coronaviruses (TGEV/PEDV/PDCV), and group A, B, and C rotaviruses, as well as Salmonella typhimurium, enterotoxigenic Escherichia coli, Streptococcus suis, and Haemophilus parasuis. Infection with one or more of these agents can ultimately antagonize pig health and performance. However, while these specific pathogens may be causing an observed disease symptom, pigs may have been predisposed to infection due to various management, nutritional, and environmental risk factors. As many of these potential pathogens are endemic in production systems, it is important to remember that simply detecting a potential pathogen within a population is often not sufficient to assign cause for poor growth and production. To help fully interpret the impact of a detected agent, diagnostic efforts should focus on providing proof that the agent is actually causing disease. Molecular detection methods, such as PCR, are increasingly available for common pathogens and have high diagnostic sensitivity but lower diagnostic specificity. This paper will discuss the clinical signs and gross and microscopic lesions associated with common nursery pig pathogens, as well as proper sampling and diagnostic testing necessary to detect and confirm disease following infection with these agents.

scholarly journals Influence of Heavy Metals on the Environmental from Tarnita Mining Area

2016 ◽  
Vol 24 (1) ◽  
pp. 1-19 ◽  
Author(s):  
Victor Jucan ◽  
Mihaela Dumitrescu ◽  
Alexandra Raluca Iordan ◽  
Mircea Nicolae Palamaru
Keyword(s):  
Heavy Metals ◽  
Aquatic Ecosystems ◽  
Negative Impact ◽  
Mining Area ◽  
Research Data ◽  
Mining Activity ◽  
Mining Activities ◽  
Before And After ◽  
The Impact ◽  
Soil And Water

Abstract This paper presents aspects related to water pollution with heavy metals from the Tarnita mining area before and after the cessation of the mining activity. The impact of heavy metals on waters is important because these metals have a negative impact on both human health and aquatic ecosystems. All research data showed that, even the mining activities from this area were suspended, the sterile still pollutes the soil and water

scholarly journals The Analysis of Differences in Body Temperature and Blood Pressure Before and After Exposure to Hot Work Climates

2020 ◽  
Vol 9 (3) ◽  
pp. 318
Author(s):  
Sarah Nadhila Rahma ◽  
Mahfiro Risky Safitri ◽  
Abdul Rohim Tualeka
Keyword(s):  
Blood Pressure ◽  
Body Temperature ◽  
Nutritional Status ◽  
Fluid Intake ◽  
Negative Impact ◽  
Work Climate ◽  
Cross Sectional ◽  
Before And After ◽  
Work Climates ◽  
The Impact

Introduction: Working in a hot work environment has a negative impact on occupational health and safety. The impact on health due to work at temperatures above a comfortable temperature can affect body temperature and blood pressure of workers. The aim of this study was to analyze the differences in body temperature and blood pressure of workers before and after exposure to hot work climates at PT. Pertamina (Persero) Tanjung Wangi. Method: This research was an observational study with cross sectional approach. The population of this study was all workers at PT. Pertamina (Persero) Tanjung Wangi., with the total of 11 people. The sample in this study was obtained by total sampling method with a sample of 11 workers. The dependent variables in this study were body temperature, blood pressure, age, fluid intake, and nutritional status, while the independent variable was work climate. Results: Most of the grass lathe workers at PT. Pertamina (Persero) Tanjung Wangi has an age between 17-25 years, some of the grass lathe workers had a fluid intake with less categories with normal nutritional status. The measurement results showed that the average ISBB value was 28.8°C, this value still exceeded TLV. In addition, the results showed that there were differences in body temperature before and after work, from 36.04° C to 36.8° C. In addition there were differences in systolic and diastolic blood pressure before work which was 112.7 mm Hg 77.3 mm Hg, and the average after work was 121 mm Hg and 83.6 mm Hg. Conclusion: There is a difference between body temperature and blood pressure before and after exposure to hot work climates.Keywords: blood pressure, body temperature, hot work climate

scholarly journals DAMPAK INDUSTRI PT. GLOBAL COCONUT TERHADAP MASYARAKAT DI DESA RADEY, KECAMATAN TENGA, KABUPATEN MINAHASA SELATAN

2017 ◽  
Vol 13 (1) ◽  
pp. 99
Author(s):  
Andreas ., Rasu ◽  
Noortje Marsellanie Benu ◽  
Elsje Pauline Manginsela
Keyword(s):  
Rural Communities ◽  
Negative Impact ◽  
Descriptive Analysis ◽  
Sample Selection ◽  
Secondary Data ◽  
Primary Data ◽  
Before And After ◽  
Foul Odor ◽  
The Impact ◽  
The Village

The purpose of this study to determine the impact of the presence of Coconut Flour Industry (PT. Global Coconut) to the community in the Radey Village. This research was carried out on members of the village community Radey as respondents. Total respondents 32 people consisting of workers in the industry (25 persons), who did not work in the industry that ordinary members of community (5 persons) and community leaders (2 persons). The study lasted for 3 months from September to November 2016. The sample selection using snowballing method. Types of data collected in this study are primary and secondary data. Primary data is data obtained by direct interview to the respondents. Secondary data is obtained from the Village Office. The data collected concerning Identity Respondents, namely: (1) Name of Respondent, (2) age, expressed in units of years, (3) Level of education, measured by educational level already attained (elementary, junior high, high school, diploma, and University). Data regarding positive or negative impact of the presence of Industry on the community in the village of Radey regarding: (1) Income received before and after working in the company, (2) employment opportunities, (3) business opportunities. The analytical method used in this research is descriptive analysis method qualitative and quantitative modest presented in tabular form. The results of this research showed that the presence of PT Global Agro-Industry Plant in the Radey Village has gave positive and negative impacts for rural communities in the form of increases in income, employment and business opportunity, the new procurement of agricultural roads better and their support for the national celebration activities in the village. The negative impact of such a foul odor had happened only when the management of the rest of the selection in the form of broken coconut and waste production is not done well.Keywords: impact, agro-industry, community, village Radey, South Minahasa District

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