scholarly journals Influence of artificial insemination time period relative to ovulation on fertility of mares

Author(s):  
A. V. Tkachev ◽  
V. I. Sheremeta ◽  
O. L. Tkacheva

The results of the study of the effect of artificial insemination of horses by the cooled and thawed semen which was prepared by Kharkiv technology depending on the time of the dominant follicle ovulation using the atraumatic tool developed for insemination of mares have been presented in the article. In modern practice of artificial insemination of horses, there are two opposing views on the timing of insemination of mares (before or after ovulation) so we decided to investigate the impact of this factor on sperm, obtained, chilled and kriokonse–rvovana for Kharkiv technology. The time of semen administration into the reproductive tract of mares depending on the ovulation of the dominant follicle is the least investigated factor that effects the efficiency of mare insemination. The artificial insemination of the horses by the semen that was prepared by Kharkiv technology with the use of the atraumatic instrument developed by us for artificial insemination of mares depending on the time of ovulation of the dominant follicle was conducted for the first time. It has been stated that the optimal time for the insemination of mares by the cooled or thawed semen of stallions depending on the ovulation with the use of the atraumatic instrument developed by us is the time period for 4 hours before and after ovulation. When insemination of mares Ukrainian horse breed tools we have and the sperm that chilled by Kharkivtion technology for 4 hours before and after ovulation received about the same output foals. When artificial insemination Ukrainian horse breed mares we developed noninvasive device after 4 or more hours of ovulation foals output decreased by 50.77% (P < 0.01) compared with insemination to ovulation and the 50.12% (P < 0.01) compared with insemination after ovulation. When artificial insemination of mares Ukrainian horse breed tools we have and sperm cryopreserved for that Kharkov Technologies for 4 hours after ovulation received incredibly more foals out at 3.47% compared with insemination before ovulation. When artificial insemination of mares Ukrainian horse breed developed our noninvasive device after 4 or more hours of ovulation foals output decreased by 35.23% (P < 0.01) compared with insemination to ovulation and the 38.70% (P < 0,01) compared to the insemination after ovulation. When carrying out the artificial insemination of the mares of Ukrainian horse breed for more than 4 hours after the ovulation the fertility decreased by 50,12 – 50.77% (P < 0.01) and by 35,23 – 38,70% (P < 0.01) by  cooled and thawed semen, respectively.

2019 ◽  
Vol 25 (116) ◽  
pp. 290-303
Author(s):  
Mohammad Kamal Kamel Afaneh

The study aimed to measure the effect of applying the disclosure and transparency standards criteria adopted by the Saudi Arabian Monetary Authority on improving performance indicators in the Saudi banking sector, by measuring the extent of the impact of the bank's financial indicators represented by liquidity, profitability and return on assets in Saudi banks by applying the criteria of disclosure and transparency, which is one of the Main principles in the list of governance, which was approved by the Saudi Arabian Monetary Authority. The analytical approach was followed to achieve the goal of the study, as the financial statements of Saudi banks were analyzed during a period of 8-year to test four hypotheses related to measuring the presence of statistically significant differences between the performance indicators of banks before and after applying the disclosure and transparency standards imposed on Saudi banks. The results of the research confirmed the existence of an inverse relationship between the bank’s liquidity and the percentage of Saudi banks ’profits. The more liquidity, the lower the profitability level of banks, which indicates that the high liquidity in Saudi banks has led to a low profitability in this time period, and the study recommended that The need to pay attention to the concept of disclosure and transparency among all related parties in Saudi banks, and banks should find a balance between liquidity and profitability  


2020 ◽  
Author(s):  
Sarat C. Dass ◽  
Wai M. Kwok ◽  
Gavin J. Gibson ◽  
Balvinder S. Gill ◽  
Bala M. Sundram ◽  
...  

AbstractThe second wave of COVID-19 in Malaysia is largely attributed to a mass gathering held in Sri Petaling between February 27, 2020 and March 1, 2020, which contributed to an exponential rise of COVID-19 cases in the country. Starting March 18, 2020, the Malaysian government introduced four consecutive phases of a Movement Control Order (MCO) to stem the spread of COVID-19. The MCO was implemented through various non-pharmaceutical interventions (NPIs). The reported number of cases reached its peak by the first week of April and then started to reduce, hence proving the effectiveness of the MCO. To gain a quantitative understanding of the effect of MCO on the dynamics of COVID-19, this paper develops a class of mathematical models to capture the disease spread before and after MCO implementation in Malaysia. A heterogeneous variant of the Susceptible-Exposed-Infected-Recovered (SEIR) model is developed with additional compartments for asymptomatic transmission. Further, a change-point is incorporated to model the before and after disease dynamics, and is inferred based on data. Related statistical analyses for inference are developed in a Bayesian framework and are able to provide quantitative assessments of (1) the impact of the Sri Petaling gathering, and (2) the extent of decreasing transmission during the MCO period. The analysis here also quantitatively demonstrates how quickly transmission rates fall under effective NPI implemention within a short time period.


2019 ◽  
Vol 25 (8) ◽  
pp. 1916-1926
Author(s):  
Nevzat Birand ◽  
Ahmet Sami Boşnak ◽  
Ömer Diker ◽  
Abdi Abdikarim ◽  
Bilgen Başgut

Background Multiple factors have been reported to affect adherence to medication, including beliefs about medicines, while specifically tailored pharmaceutical care services for patients may improve adherence. The aim was to assess the impact of counselling by an oncology pharmacist on patients' medication adherence and beliefs. Methods An interventional prospective study was performed in the oncology department at a tertiary hospital in Northern Cyprus from November 2017 to April 2018. The Beliefs about Medicines Questionnaire was used to evaluate the balance between beliefs about necessity and concerns and medication beliefs before and after an educational intervention. The Morisky Green Levine Test 2018 was used to evaluate adherence. Results In total, 81 patients (65.4% females; mean age: 59.1 ± 11.34 years; 34.6% hypertensive; 19.8% with diabetes) were analysed before and after receiving counselling from an oncology pharmacist. Pharmacist education significantly enhanced the mean patient necessity-concern balance scores by two-fold (MT0(baseline) = −3.1 ± 8.6; MT1(posteducation) =3.0 ± 7.3; p < 0.0001), with patients who received counselling for the first time experiencing the greatest benefit. Multivariate analysis showed that patients who had a negative balance between their beliefs about the necessity of the medication and their concerns were less likely to adhere to the medication (0.138 (0.025–0.772)). Conclusion Counselling by an oncology pharmacist was effective in decreasing patient concerns and increasing their understanding of the necessity of the medication, thus enhancing their adherence and consequently improving the care they received.


2011 ◽  
Vol 25 (1) ◽  
pp. 107-125 ◽  
Author(s):  
Daniel G. Neely

SYNOPSIS: The early 2000s revealed a series of high-profile financial frauds in the corporate and nonprofit sectors. In response to several of these financial scandals, California passed the Nonprofit Integrity Act (NIA) of 2004. This seminal piece of governance regulation sought to increase financial transparency and mitigate fundraising abuses by California charitable organizations. This study examines the characteristics of California charitable organizations before and after the Act to understand the initial impact the Act had on nonprofit organizations. Key findings from the study include limited reported improvement in financial reporting quality and an increase in accounting fees following the implementation of the Act. California nonprofits subject to the Act’s provisions did exhibit an increase in executive compensation following the implementation of the Act; however, the increase was less than that exhibited by the population of nonprofits during the same time period. Overall, the results of this study suggest that the initial impact of regulations similar to the NIA is greatest for organizations that did not previously have a financial statement audit.


2021 ◽  
Vol 4 ◽  
pp. 69-82
Author(s):  
Oleg Vydrin ◽  

Introduction. The article examines the dynamics of electoral competition over four electoral cycles from 2005 to 2019 as exemplified by forming representative bodies of local self-government in the city of Chelyabinsk. Particular attention is paid to the impact that the transition of Chelyabinsk to a twotier model of forming local self-government bodies in 2014 had on the electoral competition. The purpose of the paper is to study the dynamics of electoral competition in municipal elections in Chelyabinsk before and after the 2014 reform. Methods. The empirical basis of the study is the database “Electoral competition in the elections of municipal deputies of Chelyabinsk (2005—2019)”, which includes 414 observation units. The analysis of the empirical material is carried out according to the method of G.V. Golosov’s triangle of relative sizes, proposed for classifying party systems and adapted for analyzing elections in single-mandate constituencies. Scientific novelty. The author suggests a methodology for analyzing electoral competition in singlemandate constituencies. For the first time, the phenomenon of “controlled competition” is analyzed on the basis of 4 municipal elections cycles. Results. The analysis makes it possible to speak about fluctuations in electoral competition, its decline in 2009 and 2014 compared to the 2005 elections and increasing by the 2019 elections Conclusions. The “controlled competition” was formed in Chelyabinsk in the period preceding the reform of 2014. The reform introduced a level of local self-government, the effectiveness and necessity of which is not obvious with the existing design of the electoral system. In the course of the reform, the principal-agent model of relations between local self-government bodies and state authorities was finally consolidated. The reform contributed to conserving the “controlled competition”.


2014 ◽  
Vol 80 (6) ◽  
pp. 561-566 ◽  
Author(s):  
Ryan Z. Swan ◽  
David J. Niemeyer ◽  
Ramanathan M. Seshadri ◽  
Kyle J. Thompson ◽  
Amanda Walters ◽  
...  

Pancreaticoduodenectomy (PD) carries a significant risk. High-volume centers (HVCs) provide improved outcomes and regionalization is advocated. Rapid regionalization could, however, have detrimental effects. North Carolina has multiple HVCs, including an additional HVC added in late 2006. We investigated regionalization of PD and its effects before, and after, the establishment of this fourth HVC. The North Carolina Hospital Discharge Database was queried for all PDs performed during 2004 to 2006 and 2007 to 2009. Hospitals were categorized by PD volume as: low (one to nine/year), medium (10 to 19/year), and high (20/year or more). Mortality and major morbidity was assessed by comparing volume groups across time periods. Number of PDs for cancer increased 91 per cent (129 to 246 cases) at HVCs, whereas decreasing at low-volume (62 to 58 cases) and medium-volume (80 to 46 cases) centers. Percentage of PD for cancer performed at HVCs increased significantly (47.6 to 70.3%) while decreasing for low- and medium-volume centers ( P < 0.001). Mortality was significantly less at HVCs (2.8%) compared with low-volume centers (10.3%) for 2007 to 2009. Odds ratio for mortality was significantly lower at HVCs during 2004 to 2006 (0.31) and 2007 to 2009 (0.34). Mortality for PD performed for cancer decreased from 6.6 to 4.6 per cent ( P = 0.31). Major morbidity was not significantly different between groups within either time period; however, there was a significant increase in major morbidity at low-volume centers ( P = 0.018). Regionalization of PD for cancer is occurring in North Carolina. Mortality was significantly lower at HVCs, and rapid regionalization has not detracted from the superior outcomes at HVCs.


2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 375-376
Author(s):  
Emma R Knickmeyer ◽  
Jordan M Thomas ◽  
James William C Locke ◽  
Rachael C Bonacker ◽  
Lauren Ciernia ◽  
...  

Abstract An experiment was designed to evaluate the effect of extending the presynchronization period in a progestin-based estrus synchronization protocol. Heifers were assigned to an 18 d or 14 d CIDR® treatment (1.38 g progesterone), with prostaglandin F2α (PG; 250 mg im) administered 16 d after CIDR® removal (Day 34). Heifers at two locations (location one, n = 193; location two, n = 649) were assigned to treatment based on reproductive tract score (RTS; Scale 1–5) and weight. Estrus detection aids (Estrotect®) were applied at PG and split-time artificial insemination (STAI) was performed based on estrus expression at 66 h. Heifers that expressed estrus at 66 h were inseminated and heifers that did not express estrus were inseminated at 90 h. Only heifers that failed to express estrus by 90 h received gonadotropin-releasing hormone (GnRH; 100 µg im) at AI. At location one, blood samples were collected at PG and AI (66 h or 90 h) from all heifers to determine E2 concentrations, and transrectal ovarian ultrasound was performed to detail ovarian structures on a subset of heifers (n = 73) at both time points. The proportion of heifers expressing estrus by 66 h (60%) or in total by 90 h (84%) after PG did not differ between treatments. Pregnancy rate to STAI did not differ between treatments (P = 0.3; 52%, 14 d CIDR®-PG; 50%, 18 d CIDR®-PG), or at the end of the 60 d breeding season (P = 0.2). There were no differences between treatments in mean diameter of the dominant follicle at PG (P = 0.6) or STAI (P = 0.3), nor were any differences observed between treatments in E2 concentrations at PG (P = 0.8) or STAI (P = 0.6). These data suggest that CIDR® treatment can be extended from 14 to 18 d, providing flexibility in scheduling without compromising reproductive outcomes.


PRiMER ◽  
2018 ◽  
Vol 2 ◽  
Author(s):  
Zachary Tabb ◽  
Kristina Monteiro ◽  
Paul George

Introduction: The Longitudinal Integrated Clerkship (LIC) as a pedagogical model in medical education is a burgeoning area of interest as an alternative to a traditional, rotation- (block) based curriculum and presents a distinct set of considerations. A large number of studies examine the impact on students participating in LIC programs, but fewer assessments exist for the preceptors involved. This study sought to understand changes in expectations and experiences following LIC program participation. Methods: We conducted a survey-based prospective cohort study of preceptors before and after first-time LIC program participation. Five-point Likert-type questions were grouped into four subscales determined by areas of practice and preceptor role: clinical, administrative, professional, and educational. For statistical analyses of the nonmatched responses we used Pearson Chi-Square measures of association and independent t-tests. Results: Forty-seven of 84 (56%) preceptors responded to the presurvey and 42% responded to the postsurvey (35/84), totaling 82 unique responses. Thirty-nine (48%) were female, 64 (79%) had over 5 years teaching experience, and 61 (74%) had prior rotation-based clerkship experience. Only the clinical subscale (evaluating aspects of physical exam, history taking, and patient relationship with physician and student) was significantly different pre- (M1= 3.09[SD=0.40]) to post-LIC (M2= 3.47[SD=0.29]) showing a positive change at post-LIC participation (P=0.03). Conclusion: For first-time LIC preceptors in a new LIC program, participation led to improvements in clinical practice without detriment to administrative, professional, or educational roles. Future research should examine changes among individual preceptors over time as well as assessments of students, including knowledge, skills, and attitude outcomes.


2021 ◽  
Vol 13 (8) ◽  
pp. 31
Author(s):  
Shweta Yadav ◽  
Jonghag Jang

The main purpose of this study is to examine the impact on financial performance of HDFC Bank before and after the merger and to compare the pre and post-merger effect caused on its financial performance by CAMEL Analysis. The data used in the study is secondary data covering total time period of ten years which include five year prior merger (2003-2008) and five year of post-merger period (2009-2014). The research technique used in this study is CAMEL Analysis. Paired sample T-test has been also conducted to check the statistical significance difference between before and after merger CAMEL ratios and to measure the effect of merger on financial performance. The result showed that the financial performance of HDFC increased after the merger and positively impacted by the act of merger.


2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Onkokame Mothobi

Abstract This paper examines the effect of mobile number portability (MNP) on own- and cross-price elasticities. We use quarterly data for 27 mobile operators in seven Sub-Saharan Africa countries between 2010Q4 and 2014Q4 to estimate a differentiated products demand model. We find that the implementation of MNP increases price elasticities of demand for mobile services. This increase in price elasticities may be a result of reduction in switching costs between operators. On average, the introduction of MNP increases own-price elasticities by 0.47 in absolute value. We compare the level of price elasticities before and after the implementation of MNP in Ghana and Kenya, which implemented this policy in the time period of our study. Our results suggest that in Ghana, MNP increased own-price elasticities by an average of 0.35 in absolute term from an average of −0.74. In Kenya, the introduction of MNP increased own-price elasticities by an average of 0.21 in absolute term from a lower average of −0.39. However, we find that the average own-price elasticities in Kenya and Ghana remained small even after the implementation of MNP relative to other countries without MNP in place.


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