scholarly journals New bacilli-based probiotic for aquaculture: efficacy study on Macrobrachium rosenbergii

2022 ◽  
Vol 42 ◽  
pp. 01011
Author(s):  
Angelina Malkova ◽  
Ivan Evdokimov ◽  
Maksim Shirmanov ◽  
Alena Irkitova ◽  
Dmitry Dementyev
Keyword(s):  
Macrobrachium Rosenbergii ◽  
Control Group ◽  
Circulating Water ◽  
Limit Value ◽  
Recirculating Aquaculture ◽  
Aquaculture System ◽  
Molting Process ◽  
Positive Effect ◽  
Experimental Group ◽  
Private Farm

The data on the study of the effectiveness of a new probiotic based on strains B. toyonensis B-13249 and B. pumilus B-13250 when growing shrimps are presented. The experiments were carried out on a private farm in Kazakhstan. The control group of shrimps, which did not receive the probiotic, completed the molting process on the 28th day of the experiment, and the experimental group – 10 days earlier. It was also found that the probiotic has a positive effect on the hydrochemistry of water in recirculating aquaculture system (RAS). The concentration of ammonium (NH3/NH4 +), nitrite (NO2) and nitrate (NO3-) nitrogen in the experimental group did not reach the limit value, in contrast to the control. Based on the obtained results, this probiotic can be recommended for greening aquaculture. The dosage of the probiotic when applied with brine shrimp as feed for shrimp is 1 g/100 g of dry cysts. The dosage of the probiotic when the RAS is added to the water is 5 g/600 l of circulating water once a week.

The use of a feed additive on the base of beekeeping products «Vinivet» in the feeding of juveniles of Steelhead salmon

2021 ◽  
pp. 19-27
Author(s):  
D. S. Dementiev ◽  
M. L. Kalayda ◽  
A. V. Zhigin
Keyword(s):  
Rapid Development ◽  
Feed Consumption ◽  
Feed Additive ◽  
Control Group ◽  
Recirculating Aquaculture System ◽  
Recirculating Aquaculture ◽  
Aquaculture System ◽  
Starting Compound ◽  
Effective Use ◽  
Experimental Group

Currently, there is a rapid development of commercial salmon farming in Russia, which has grown almost 3 times in terms of production since 2013 and exceeded 116 thousand tons in 2020. In turn, this requires the appropriate development of the feed base and the development of methods for the effective use of fairly expensive fi sh feed. From these positions the involvement of the feed additive “Vinivet”, which is a waste of beekeeping in the feed production for fi sh as a protein additive is relevant. The feed additive “Vinivet” contains bee products such as bee bread and slumgum, a significant complex of vitamins, amino acids, macro- and microelements. The purpose of the work was to assess the influence of the feed additive “Vinivet” on the livability of juveniles, growth rate and feed consumption of rainbow trout of Steelhead salmon breed when growing in a recirculating aquaculture system. For the experiment juveniles with an average juvenile weight of 2,37±0,72 g have been selected, from which the control and 3 experimental groups have been formed. The control group has received a standard starting compound feed as the main diet, the 1st experimental group in addition to the main diet has received the additive “Vinivet” in the amount of 2,5 % of the mass of the main diet, the 2nd experimental group has received 5,0 % of the additive, and the 3rd experimental group in the first week received 2,5 % of the additive, and from the second week of studies the dose of the additive was increased to 5 %. The conducted studies have shown that the inclusion of the feed additive “Vinivet” in the feed when growing juveniles of Steelhead salmon is most advisable by introducing it at the dosage of 2,5 % of the mass of the main diet in the first week of cultivation, followed by the increase in the dose to 5,0 %, which allows achieving the highest fi sh productivity of pools in the recirculating aquaculture system compared to all variants of the experiment and by 24 % compared to the control group.

Соматические дисфункции у детей с задержкой речи

2017 ◽  
pp. 61-65
Author(s):  
E. L. Kuznetsova ◽  
L. A. Dultsev ◽  
E. V. Safin
Keyword(s):  
Standard Treatment ◽  
Control Group ◽  
Complex Therapy ◽  
Osteopathic Treatment ◽  
Positive Effect ◽  
Experimental Group

Goal of research - the study aims to examine the osteopathic profi le of children with dysarthria and to develop recommendations for osteopathic correction of somatic dysfunctions in 2-3 year old children presenting this pathology.Materials and methods. 30 2-3 year old children with the symptoms of dysarthria took part in the research. All the children were divided into 2 groups: the control group of 15 children received standard treatment, and the experimental group of 15 children received both standard and osteopathic treatment. The dysarthria severity and the osteopathic profi le were evaluated with account of the number of somatic dysfunctions at global, regional, and local levels.Results. The osteopathic correction was shown to have a positive effect on dysarthria severity. The study established a correlation between the dysarthria severity in children and the number of somatic dysfunctions at the local level.Conclusion. The study suggests using osteopathic correction of somatic dysfunctions in the complex therapy of dysarthria in children.

Pragmatic instruction in L2-Russian

2020 ◽  
Vol 4 (1) ◽  
pp. 62-95
Author(s):  
Daniele Artoni ◽  
Valentina Benigni ◽  
Elena Nuzzo
Keyword(s):  
Foreign Language ◽  
Speech Acts ◽  
Control Group ◽  
Written Discourse ◽  
Instructional Treatment ◽  
Completion Task ◽  
Positive Effect ◽  
Experimental Group ◽  
National Corpus ◽  
Pragmatic Instruction

Over the last three decades, a growing number of studies have investigated the effects of instruction on the acquisition of pragmatic features in L2. The bulk of this research has focused mainly on the teaching of English as a second/foreign language. However, instructional pragmatic studies in L2-Russian are lacking. The main purpose of our study is to contribute towards filling this gap by analysing the effects of pragmatic instruction on the acquisition of two speech acts by Italian learners of Russian. Furthermore, we aim to explore whether the Multimodal Russian Corpus (MURCO), a multimedia subcorpus of the Russian National Corpus, can be an effective tool for teaching speech acts in L2-Russian. Our research was composed of one experimental group (n = 18) and one control group (n = 11); each was composed of two intact classes of Italian university students at an intermediate level of L2-Russian, who were pre- and post-tested using a written discourse completion task. The experimental group was subjected to a programme of pragmatic instruction – eight thirty-minute MURCO-based lessons devoted to requests and advice, while the control group was taught according to the standard syllabus, that is, with no pragmatic instruction. The results revealed that the use of the target pragmatic features varied significantly in the experimental group, but not in the control group, thus showing a general positive effect of the instructional treatment based on the MURCO corpus. However, some limitations were identified with regard to the usability of this tool by teachers and learners.

scholarly journals UTILIZATION POSSIBILITIES OF PREBIOTICS AND PROBIOTICS IN PREVENTION AND HEALTH CARE OF CALVES

2013 ◽  
Vol 17 (2) ◽  
pp. 121-127
Author(s):  
Luboš Zábranský ◽  
Miloslav Šoch ◽  
Pavel Novák ◽  
Jan Brouček ◽  
Anna Šimková ◽  
...  
Keyword(s):  
Health Care ◽  
Statistical Significance ◽  
Control Group ◽  
Seaweed Extracts ◽  
Weight Gains ◽  
Positive Effect ◽  
Experimental Group

Abstract the aim of our study was to evaluate influence of probiotic agents (Lactovita) and seaweed extracts (Biopolym) with antidiarrheal effects on the prevention of diarrhoea in calves. In the experiment 22 experimental and 22 control calves were observed. The results of the observed incidence of diarrhoea in the control and experimental groups showed a positive effect of probiotic Lactovita and seaweed extracts Biopolymer. 32% of calves in the experimental group and 45% of calves in the control group became sick. Unfortunately, we could not demonstrate the statistical significance of these differences. The weight gains found in the 4th week after birth were by 37.6% higher in the group with Lactovita and Biopolym than in the control group.

scholarly journals EFFECT OF PROBIOTICS ON REPRODUCTION FUNCTION OF BREEDING SOWS

2020 ◽  
pp. 55-56
Author(s):  
Olga Nikolaevna Polozyuk ◽  
Evgeniy Sergeevich Polozyuk
Keyword(s):  
Control Group ◽  
Positive Effect ◽  
Experimental Group ◽  
Comprehensive Indicator ◽  
Bacillus Strains

The results of studies on the effectiveness of use in the diets of pregnant and sucking sows probiotic based on bacteria Bacillus strains bacillus B. subtillus and B. amyloliquefaciens are presented. The use of the probiotic had a positive effect on the reproductive qualities of sows, which allowed increasing the milkiness of sows of the experimental group by  24.1% compared to the analogues of the control group. The comprehensive indicator of reproductive qualities of breeding sows of the experimental group were higher than in the control by 16.8 points. The weight of the piglet's nest at weaning was 18.7 kg more than in the control group. The safety of piglets in the control group was 86.9%, and in the experimental group it increased to 92.9%.

scholarly journals The Effect of Memory Strategy Training on Vocabulary Learning by EFL Female Students of the College of Languages and Translation: An Experimental Study

2018 ◽  
Author(s):  
Arab World English Journal ◽  
Ghadah Fahad Alzaidi
Keyword(s):  
Traditional Instruction ◽  
Strategy Training ◽  
Control Group ◽  
King Saud University ◽  
New Words ◽  
Before And After ◽  
Post Test ◽  
Students Attitudes ◽  
Positive Effect ◽  
Experimental Group

The purpose of this study was to investigate the effectiveness of memory strategies (MSs)in improving students' ability to recall and spell newly learned vocabulary items. The researcheronly considered three types of MSs: grouping, placing new words in to a context and structuredreviewing. In addition, the study used a questionnaire that explored students' attitudes towardsMSs in general, and towards the specific MSs that they have been trained to use, as well as therelationship between MSs and motivation and between MSs and anxiety. intact groups (63 students in total) were selected from level three of the College of Languages and Translation (COLT) at King Saud University (KSU), Kingdom of Saudi Arabia. The two groups were assigned to the experimental group (36 students) and the control group(27students). The control group received traditional instruction that depended on the textbook without any MS training, whereas the experimental group received a combination of traditional instruction and MS training. A pre- and post-test were administered to both groups before and after the experiment to examine students' ability to recall the meaning of vocabulary items and their ability to spell them correctly. The experiment lasted for fourteen weeks through which the participants received seven MS training sessions. The study found out that MS training was effective in improving students' ability to recall the meaning of vocabulary items when needed and their ability to spell them correctly. Moreover, the results showed that the subjects of the experimental group showed positive attitude towards MSs and most of them agreed on the positive effect that MSs had on raising their motivation and reducing their anxiety while learning vocabulary.

scholarly journals The Effectiveness of Input on Voiced and Unvoiced Consonant Sounds in a Native Arabic Speaking Context: An Action Research Project

2020 ◽  
Vol 2 (3) ◽  
pp. p1
Author(s):  
Gareth Morgan
Keyword(s):  
Action Research ◽  
Control Group ◽  
Action Research Project ◽  
Research Project ◽  
English Speaking ◽  
The Difference ◽  
Arabic Speaking ◽  
Consonant Sounds ◽  
Positive Effect ◽  
Experimental Group

The paper describes the process and outcomes of an action research project with the aim of determining whether focusing classroom input on voiced and unvoiced consonant sounds has a positive effect on their production. Statistics were derived from English-speaking respondents listening to native Arabic speaking participants from an experimental group, who had received input on the difference between these sounds, and practiced their production, as well as to speakers from a control group who had received neither input nor practice. The rates of intelligibility were compared, with the conclusion being that the provision of limited input on this pronunciation issue does not, generally speaking, result in the ability to produce the sounds with greater clarity.

scholarly journals THE EFFECT OF TEAM PRODUCT TO IMPROVE STUDENTS’ CREATIVITY IN WRITING AT SMPN 1 JONGGAT

2020 ◽  
Vol 8 (1) ◽  
pp. 40
Author(s):  
Zukhairatunniswah Prayati
Keyword(s):  
Control Group ◽  
Product Method ◽  
8Th Grade ◽  
The Subject ◽  
The Mean ◽  
Inferential Analysis ◽  
And Control ◽  
Academic Year ◽  
Positive Effect ◽  
Experimental Group

This study investigated the effect of team product to improve students’ creativity in writing at the 8th-grade students of SMPN 1 Jonggat, Central Lombok in the academic year 2018/2019. The research was designed as quasi experiment research. The students were divided into the experimental group and control group. The experimental group was treated using the team product method while the control group was subjected to a conventional method. The data were analyzed using descriptive and inferential analysis. The data in this research was taken from the mean scores of students’ achievement and the score percentages. The subject of this research was the 8th-grade students of SMPN 1 Jonggat, which consisted of 54 students. The instruments of this research were tests and questionnaires. The mean score of students’ creativity in the experimental group was 75 and the writing skill was 76. It was higher than the students in the control group. It can be concluded that the team product had a positive effect on students’ writing skills in relation to creativity at SMPN 1 Jonggat.

scholarly journals Rabbit Dietary Supplementation with Echinacea purpurea L.: The Quality Profile of Rabbit Meat

2020 ◽  
Vol 50 (2) ◽  
pp. 185-193
Author(s):  
Roman Voroshilin ◽  
Marina Kurbanova ◽  
Sergey Rassolov ◽  
Elena Ul'rih
Keyword(s):  
Technological Development ◽  
Saturated Fatty Acids ◽  
Echinacea Purpurea ◽  
The Body ◽  
Feed Additive ◽  
Control Group ◽  
Meat Production ◽  
Rabbit Meat ◽  
Positive Effect ◽  
Experimental Group

Introduction. Rabbit meat is an excellent source of dietetic food. High-quality and safe meat production is a priority of the scientific and technological development of the Russian Federation. The research objective was to determine the optimal dose of Echinacea purpurea L. extract in the rabbit diet and study its effect on the physicochemical and morphological quality parameters of rabbit meat. Study objects and methods. At 70 days of age, the experimental animals started to receive various doses of a phytobiotic feed additive based on the Echinacea purpurea extract. The experiment lasted 30 days. Results and discussion. The daily dose of 1.0 g and 1.5 g per animal proved to stimulate the redox processes in the rabbit metabolism. The body weight of the test animals significantly increased compared with the control group. The test slaughter revealed a high level of meat productivity. The animals in experimental groups II and III showed the best slaughter indicators. Each animal received 1.5 g of the extract per day. The morphological composition of chilled carcass indicated that the additive had a positive effect on the mass indicators. According to the physical and chemical analysis, the contents of water, protein, and ash in the experimental group was the same as in the control group. The ratio of unsaturated and saturated fatty acids in the control group was 1.34:1, while in the experimental group III is was 1.39:1. This optimal proportion proved a high biological value of rabbit meat, which makes it a dietary product. The phytobiotic additive proved commercial as the test animals demonstrated an intensive weight gain compared with the control group. Experimental groups II and III showed the best slaughter indicators. Conclusion. 1.5 g of the extract of Echinacea purpurea had a positive effect on the composition and physicochemical parameters of rabbit meat, as well as meat production.

The Effect of Repetition on Tempo Preferences of Elementary Children

1992 ◽  
Vol 40 (3) ◽  
pp. 193-203 ◽  
Author(s):  
Elisa M. Moskovitz
Keyword(s):  
Elementary School ◽  
South Carolina ◽  
Fourth Graders ◽  
Art Music ◽  
Elementary Children ◽  
Control Group ◽  
Group Preferences ◽  
Positive Effect ◽  
Experimental Group

The purpose of this study was to measure the effect of repeated listenings on children's preferences between selected slow and fast excerpts of art music. The sample consisted of fourth graders from a South Carolina elementary school After a pretest given to control and experimental groups, the experimental groups were exposed to repeated slow excerpts played in comparison to single presentations of different “transitory ” fast examples drawn from baroque, classical, romantic, and atonal styles. The control group duplicated this procedure with the exception that both slow and fast listening examples were always “transitory.” The proportions of control and experimental group preferences were statistically analyzed, and significant results were obtained. The experimental group exceeded the control group in its choices of slow excerpts in all style categories tested. Repetition had a positive effect on children's preferences for slow music.

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