scholarly journals Ovarian cysts in cattle

2021 ◽  
Vol 52 (5) ◽  
Author(s):  
Nora Mimoune ◽  
Mohamed Yassine Azzouz ◽  
Djamel Khelef ◽  
Rachid Kaidi
Keyword(s):  
Standard Treatment ◽  
Post Partum ◽  
Economic Losses ◽  
Ovarian Cysts ◽  
Negative Effects ◽  
Factors Affecting ◽  
Additional Information ◽  
Effective Combination ◽  
Definition Of ◽  
Major Factors

Ovarian cysts (OC) are one of the major factors affecting the fertility of dairy cattle due to their negative effects on reproductive performances, causing great economic losses. They have been traditionally defined as anovulatory follicular structures with a diameter exceeding 20 or 25 mm, lasting at least 10 days on the ovary in the absence of a functional corpus luteum. However, in recent years, the development of ovarian ultrasound and hormonal assays, particularly progesterone (P4), have provided additional information, thus changing the definition of this disease. These methods were proposed as the most effective combination for the diagnosis of OC. Treatments are primarily based on the use of different hormones or hormonal associations. Particularly, the standard treatment is GnRH. PGF2α is very effective in the case of luteal cyst. However, treatment failures observed with commonly administered hormones require the use of second-line treatments. Therefore, the Ovsynch protocol and progestogen appear to be a possible alternative in OC treatment. In order to prevent OC formation and to reduce OC incidence, strategies should focus on reducing diseases and stress and optimizing food intake during dry-off and post-partum (PP) periods. Medical prevention has been proposed with the same substances commonly used in treatment (GnRH, PGF2α).

scholarly journals Ovarian cysts in cattle

2021 ◽  
Vol 52 (6) ◽  
Author(s):  
Nora Mimoune ◽  
Djamel Khelef ◽  
Rachid Kaidi
Keyword(s):  
Standard Treatment ◽  
Post Partum ◽  
Economic Losses ◽  
Ovarian Cysts ◽  
Negative Effects ◽  
Factors Affecting ◽  
Additional Information ◽  
Effective Combination ◽  
Definition Of ◽  
Major Factors

Ovarian cysts (OC) are one of the major factors affecting the fertility of dairy cattle due to their negative effects on reproductive performances, causing great economic losses. They have been traditionally defined as anovulatory follicular structures with a diameter exceeding 20 or 25 mm, lasting at least 10 days on the ovary in the absence of a functional corpus luteum. However, in recent years, the development of ovarian ultrasound and hormonal assays, particularly progesterone (P4), have provided additional information, thus changing the definition of this disease. These methods were proposed as the most effective combination for the diagnosis of OC. Treatments are primarily based on the use of different hormones or hormonal associations. Particularly, the standard treatment is GnRH. PGF2α is very effective in the case of luteal cyst. However, treatment failures observed with commonly administered hormones require the use of second-line treatments. Therefore, the Ovsynch protocol and progestogen appear to be a possible alternative in OC treatment. In order to prevent OC formation and to reduce OC incidence, strategies should focus on reducing diseases and stress and optimizing food intake during dry-off and post-partum (PP) periods. Medical prevention has been proposed with the same substances commonly used in treatment (GnRH, PGF2α).

scholarly journals Study on the Factors Affecting the Financing of High-Tech SMEs

2017 ◽  
Vol 13 (8) ◽  
pp. 121
Author(s):  
Mingjun Zhu
Keyword(s):  
Positive Relationship ◽  
Significance Test ◽  
High Tech ◽  
Negative Effects ◽  
Factors Affecting ◽  
Enterprise Growth ◽  
Tax Shield ◽  
Debt Tax Shield ◽  
Major Factors ◽  
Tangible Asset

High-tech small and medium-sized enterprises (SMEs) have played an important role in promoting the development of Chinese national economy, but most of them are still facing the difficulty in financing. This paper determines the major factors affecting the financing for high-tech SMEs by using multiple linear regression (MLR) method and significance test then comes to a conclusion that enterprise scale, enterprise growth, tangible asset ratio and equity liquidity have positive relationship with the financing of high-tech SMEs while profitability, accumulation, non-debt tax shield and solvency have negative effects.

scholarly journals THE RELIABILITY OF DETERMINING THE SHORT CIRCUIT ZONE OF THE LINES OF 6–35 kV

2018 ◽  
Vol 61 (1) ◽  
pp. 5-14 ◽  
Author(s):  
F. А. Romaniuk ◽  
E. V. Buloichyk ◽  
O. A. Huryanchyk ◽  
V. S. Kachenya
Keyword(s):  
Fault Zone ◽  
Fault Location ◽  
Dynamic Properties ◽  
Short Circuit ◽  
Correction Method ◽  
Worst Case ◽  
Factors Affecting ◽  
Definition Of ◽  
Major Factors

A method of increasing the reliability of determining the zone of short-circuit at the current step protection of the lines of 6–35 kV with unilateral power, aimed at improvement of their technical perfection, is presented in the paper. Having taken the relative simpleness of the current protection into account the authors consider the unilateral remote method of accounting the parameters of the emergency mode and the type of fault to be the most suitable for the implementation of the algorithm of its functioning as compared with the existing methods of fault location. The major factors affecting the accuracy of determining the short circuit zone based on the remote method are noted. With the use of the method of computational experiment the influence of the load currents and contact resistances of various levels on the magnitude and character of changes of errors of determination of the calculated distance of the point of fault from the protection installation location taking into account the errors of measuring transformers. It is demonstrated that in many cases of arc short circuit in a loaded line in order to define the zone of short-circuit with fair accuracy correction of the estimated distance to the fault as calculated by the parameters of the damaged loop (loops) is required. According to the results of numerical experiments corrective expressions on the basis of two relative asymmetry currents determined by the current values of the differences of the phase currents of the line for detecting a type of a short circuit have been obtained. The assessment of the efficiency of the proposed method has been performed. It is shown that the application of the proposed correction method makes it possible to increase the accuracy of fault zone detection. The dynamic properties of the proposed method applied to different modes of the line functioning have been studied. It is determined that in the worst case the definition of the fault zone for a maximum duration of 26 μsec is provided.

scholarly journals Repeat breeding syndrome in crossbred dairy cows of Bangladesh: some important characteristics and influential factors

2019 ◽  
pp. Jayonta-Bhattacharjee
Author(s):  
Jayonta Bhattacharjee ◽  
Jayonta Bhattacharjee ◽  
Jayonta Bhattacharjee ◽  
Jayonta Bhattacharjee ◽  
J. Bhattacharjee
Keyword(s):  
Dairy Cows ◽  
Body Condition Score ◽  
Post Partum ◽  
Influential Factors ◽  
Economic Losses ◽  
Factors Affecting ◽  
Study Results ◽  
Condition Score ◽  
Healthy Control ◽  
Repeat Breeder

Background: Repeat breeding syndrome (RBS), an important reproductive disorder of dairy cattle, results in high economic losses in the dairy industry. The study was conducted to determine the factors of repeat breeding in crossbred dairy cows at selected areas of Bangladesh. Methods: A total of 592 breedable cows from 34 farms were examined from Mymensingh and Chittagong district. Seventy cows were identified as repeat breeder cows and another 23 cows were randomly selected as healthy control cows for the study. Results: The number of calving, the interval between first post-partum heat and last service date, number of services failed and consecutive services failed, the number of medications given, and number of suckling were found significantly higher in repeat breeder cows compared to normal healthy cows. Body weight and Body condition score (BCS) were significantly lower in repeat breeder cows compared to normal healthy cows. There were no significant differences in the estrus cycle length and concentrate feeding in both repeat breeder and healthy cows. The lowest occurrence of repeat breeder was recorded in cows fed with a larger amount of green grass. Remarkably, the highest occurrence of repeat breeder was recorded in cows fed with a significant amount of straw. Conclusion: The identified features of repeat breeding syndrome will help in disseminating awareness on factors affecting the occurrence of repeat breeding syndrome in crossbred cows.

Mathematical Model for the Factors Affecting Catalase Activity in Activated Sludge

2013 ◽  
Vol 409-410 ◽  
pp. 152-155
Author(s):  
Jun Yin ◽  
Jing Yi Cui ◽  
Jia Ni Li ◽  
Jun Xiang Wang
Keyword(s):  
Mathematical Model ◽  
Activated Sludge ◽  
Mathematical Models ◽  
Catalase Activity ◽  
Ph Value ◽  
Regression Method ◽  
Factors Affecting ◽  
Effective Combination ◽  
Major Factors

The regression method was adopted to establish mathematical models for the select ion of most effective combination of pH value, temperature,C/N,MLSS,that are four major factors affecting activity of catalase,in activated sludge. The models are:Y=－655.7+507.7X1－58.4X3－0.11X4－18.3X1X3－0.12X1X4+0.04X3+44.04X12－0.17X32+0.000005X42,F=111.37,p<<0.01. It reveals that the catalase has the highest activity under the combination of pH7, temperature 25°C,MLSS 8000mg/L.

scholarly journals Factors Affecting Material Management in Construction Industry

2019 ◽  
Vol 8 (3) ◽  
pp. 8445-8448
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Sustainable Use ◽  
Project Managers ◽  
Material Management ◽  
Factors Affecting ◽  
Roles And Responsibilities ◽  
Long Run ◽  
Definition Of ◽  
Major Factors

Material cost is almost 50-60% of most construction projects. A better material management contributes to lesser cost for a project and also, sustainable use of available resources in the long run. This project aims to identify the major factors affecting material management in a construction project. The various factors at different stages of material management are identified and put in a form of a questionnaire. The responses to the questionnaire were obtained from the stakeholders such as architect, storekeepers, material managers, quantity surveyors, site engineers, project managers, and project engineers. The relative importance of each factor is arrived at based on the ranked response obtained from questionnaire survey. Among the factors identified, the factor ‘unclear definition of roles and responsibilities’ is ranked as the major factor that affects material management

scholarly journals EFFICIENCY OF APPLE SMALL-SCALE FARMING IN ALBANIA-A STOCHASTIC FRONTIER APPROACH

New Medit ◽  
2019 ◽  
Vol 18 (2) ◽  
pp. 57-70
Author(s):  
Myslym Osmani ◽  
Arben Kambo
Keyword(s):  
Technical Efficiency ◽  
Production Efficiency ◽  
Stochastic Frontier ◽  
Modern Technology ◽  
Small Scale ◽  
Negative Effects ◽  
Stochastic Frontier Approach ◽  
Factors Affecting ◽  
Apple Production ◽  
Major Factors

Apple production sector in Albania is growing very fast in Albania but research about apple production efficiency is almost absent. This research aims at assessing the technical efficiency and factors affecting it for the Albanian apple farms. Data of 150 randomly selected farmers in the area of Korça region are analyzed with the Stochastic Frontier Approach. The average level of technical efficiency results 88%, with 12% potential for improvement. The efficiency gap is about 21%. Major factors with positive effect on technical efficiency result the access to advisory services, average plots size, number of apple plots; education and proportion of orchards under modern technology have negative effects; age, and farmer’s experience are not significant. Measures to support planting of apples should take into account the size of plots. There is much space to improve extension services to farmers, so adequate policies are needed to support farmers with training, information to improve their skills and knowledge, to ensure they are supplied with quality inputs and technologies at reasonable prices, and policies to improve farmers access to markets.

Aflatoxins biosynthesis, toxicity and intervention strategies: A review

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Developing Countries ◽  
Molecular Basis ◽  
Genetic Regulation ◽  
Intervention Strategies ◽  
Historical Background ◽  
Economic Losses ◽  
Factors Affecting ◽  
Biomarkers Of Exposure ◽  
Food Commodities

Aflatoxins (AFTs) are toxic products of fungal metabolism, associated with serious health consequences and substantial economic losses to agriculture, livestock and poultry sectors, particularly in the developing countries. This review outlines the current information on AFTs in terms of historical background, classification, relative occurrence and co-existence with other mycotoxins in various food commodities. The phenomenon of aflatoxin (AFT) biosynthesis has been elucidated with reference to molecular basis, genetic regulation and factors affecting the AFT production. Moreover, the in vivo disposition kinetics, toxicological action and toxico-pathological consequences of AFTs have also been highlighted. Currently employed strategies for the detection and detoxification of AFTs, biomarkers of exposure assessment, potential economic impact and regulatory considerations regarding the AFTs have been emphasized.

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