scholarly journals Performance of the third generation striped catfish, Pangasianodon hypophthalmus Sauvage, 1878 as results of the selection for bodyweight character in Freshwater Aquaculture Fisheries Center, Sungai Gelam, Jambi

2019 ◽  
Vol 19 (3) ◽  
pp. 411
Author(s):  
Irwan Irwan ◽  
Dinar Tri Soelistyowati ◽  
Odang Carman ◽  
Ronny Rachman Noor
Keyword(s):  
Water Exchange ◽  
Selective Breeding ◽  
Selection Response ◽  
Growth Line ◽  
Third Generation ◽  
Base Population ◽  
Pangasianodon Hypophthalmus ◽  
The Third ◽  
Three Generations ◽  
Striped Catfish

Selective breeding of striped catfish (Pangasianodon hypophthalmus Sauvage, 1878) has been conducted at BPBAT Sungai Gelam to produce a growth line with mass selection method. Until 2018, the selective breeding program has produced three generations. Therefore, it was necessary to evaluate the performance of the third generation growth line (G3Ps) at the reproductive, seed and grow-out phase compared to the second generation the base population (G2Ds). A total of 10 pairs of broodstock (G3Ps and G2Ds) were spawned then the seeds were raised for 120 days in the media with regular water exchange (first treatment: T1) and without water exchange (second treatment: T2). The results showed that the number of eggs per gram of G3Ps (1600±124 eggs g-1) was significantly different from G2Ds (1490±101 eggs g-1). The bodyweight of G3Ps seeds at aged 40 days larger than G2Ds with selection response is 32.25%, while survival and feed efficiency were not significantly different. At the grow-out phase, between treat-ments were not significantly different and there was no interaction between lines and treatments for all the characters measured (p>0.05). The bodyweight of G3Ps was larger than the G2Ds with response selection 18.41% in T1 and 42.6% in T2. The control used was the base population so that the selection response obtained was an accumulation of three generations. Thus the selection response per generation was 6.14% in T1 and 14.20% in T2 measured at 162 days from hatching. It can be concluded that there is an improvement in the character of bodyweight for the third generation of growth line (G3Ps) as results of the selection at BPBAT Sungai Gelam both in good (T1) and bad environment (T2).

Isotopic-geochemical features of water-rock system by the example of Verkh-Tarskoe oil field

2020 ◽  
Author(s):  
Lyudmila G. Vakulenko ◽  
◽  
Dmitry A. Novikov ◽  
Ostap D. Nikolenko ◽  
Fedor F. Dultsev ◽  
...  
Keyword(s):  
Narrow Range ◽  
Oil Field ◽  
Isotopic Ratios ◽  
Third Generation ◽  
Rock System ◽  
Authigenic Minerals ◽  
The Third ◽  
Three Generations ◽  
Aquifer Complex ◽  
Comprehensive Study

The first data of a comprehensive study of the isotope-geochemical features of the water-rock system are presented on the example of the Yu 1 horizon of the Verkh-Tarsk oil field. It was established that the reservoir waters of the developed deposits are similar in the isotopic ratios and located in the same area with the waters of the Apt-Alb-Cenomanian aquifer complex (an agent for flooding). In the cement of silt-sandy rocks among the authigenic minerals most widely represented by calcite, three generations of it were established. A narrow range of δ 13 C values was revealed in the analysis of the δ 13 C - δ 18 О isotope pair. In waters it ranges from -10.5 to -9.1 ‰, and in calcites of the third generation from -10.7 to -9.1 ‰.

scholarly journals GENETIC PERFORMANCE OF THE STRIPED CATFISH (Pangasianodon hypophthalmus Sauvage, 1878) POPULATION DERIVED FROM SELECTIVE BREEDING

2019 ◽  
Vol 14 (1) ◽  
pp. 1
Author(s):  
Huria Marnis ◽  
Evi Tahapari ◽  
Jadmiko Darmawan
Keyword(s):  
Microsatellite Loci ◽  
Genetic Improvement ◽  
Selective Breeding ◽  
Growth Trait ◽  
Performance Data ◽  
Gene Frequencies ◽  
Microsoft Excel ◽  
Pangasianodon Hypophthalmus ◽  
Striped Catfish ◽  
Nei's Distance

Selective breeding to improve growth trait in striped catfish (Pangasianodon hypophthalmus) need genetic performance data. This study was carried out to evaluate genetic performance of different generations of the striped catfish population derived from selective breeding. Fifty fish of each population from four generations selected striped catfish was analyzed using five microsatellite loci (Pg-1, Pg-2, Pg-3, Pg-13, and Pg-14). Microsatellite allele data were analyzed using Microsoft Excel, Arlequin, and Fstat software. A neighborhood joining dendrogram was constructed based on Nei’s distance (Da) matrix with 1,000 bootstrap replications using MEGA7 software. The result showed that totally 31.5 exist, ranged from 4-7. Number of allele was ranged from 5.0 to 5.2, and polymorphic data was from 0.45-0.60. There were some exception, such as the allele of the loci Pg-2—194 bp, Pg-13—227 bp, Pg-13—229 bp, and Pg-14—279 bp; their gene frequencies were increased by generation. Further analyses indi­cated that most genetic variations arise from individuals within populations (approximately 57.10%). The founder generation closely related to G-0 generation. Likewise, G-1 generation closely related to G-2 generation. This result indicated that selection activity had a very significant impact on the genetic improvement of the selected population.

scholarly journals GENERATIONS OF THE DEVELOPMENT OF IT OUTSOURCING IN POLAND

2018 ◽  
Vol 17 (4) ◽  
pp. 141-150
Author(s):  
Jolanta Słoniec ◽  
Anna Kaczorowska ◽  
Sabina Motyka
Keyword(s):  
It Outsourcing ◽  
Third Generation ◽  
Harmonious Development ◽  
Field Development ◽  
Main Research ◽  
The Third ◽  
Three Generations ◽  
Questionnaire Surveys

The paper presents a study on the development of IT outsourcing (ITO) in large organizations in Poland. Based on the generations of outsourcing development presented in the literature, an attempt was made to develop the generation of IT outsourcing. Three generations of ITO development have been identified. The main research assumption was formulated as follows: The development of the ITO industry is carried out in accordance with the generation order of ITO development. Three detailed assumptions were also formulated. Each of them was referred to activities and functions included in individual generations. In order to address the assumptions, questionnaire surveys of ITO companies were carried out. Our own studies and analyses made it possible to confirm the adopted main and detailed assumptions. Confirmation of the ITO development in line with the ITO generations testifies to the harmonious development of the industry. Possible directions for further research concern new forms of ITO services related to the third generation of the ITO field development.

Reproductive System State among Generations of Male Rats, Obtained from Irradiated Parents and Subjected to Electromagnetic Interference from Mobile Phone (1745 MHz)

2018 ◽  
pp. 33-40 ◽  
Author(s):  
Юрий Григорьев ◽  
Yuriy Grigor'ev ◽  
Н. Чуешова ◽  
N. Chueshova ◽  
Г. Верещако ◽  
...  
Keyword(s):  
Blood Serum ◽  
Mobile Phone ◽  
Reproductive System ◽  
Birth Rate ◽  
Male Rats ◽  
Third Generation ◽  
The Third ◽  
Three Generations ◽  
Males And Females ◽  
Epididymal Spermatozoa

Purpose: To study the condition of the reproductive system of the male rats at three generations (F1–F3) received from irradiated parents and who were exposed daily to the mobile phone (1745 MHz, 8 hours/day) until reaching the age of 6 months. Material and methods: The white rats aged 52–54 days were subjected to electromagnetic exposure from the mobile phone (1745 MHz, 8 hours/day, power density 0.2–20 μW/cm2, x = 7.5±0.3 μW/cm2) for 90 days. The irradiated males and females were then mated in a 1:2 ratio. The females throughout the gestation period (20–21 days) and the offspring (F1) obtained from them continued to be irradiated under the above-mentioned regimen until reaching the age of 6 months. The animals of the 1st generation (males and females) at the age of 4 months mated for the generation of the second generation, and from them in the same way received the offspring of the third generation. The state of the reproductive system of male rats of 3 generations was evaluated at the age of 2, 4 and 6 months. Results: It is established that birth rate at the irradiated animals of three generations authentically falls. This posterity from 8 females makes 53, 86 and 45 % respectively in the 1st, 2nd and 3rd generation of the control group. The electromagnetic effect affected the weight of the testicles and epididymis of rats of three generations, mainly at the age of 4 and 6 months. The mass of testicles increased at animals of the 3 generation at the age of 4 months and at animals of the 3rd generation at the age of 6 months. The mass of epididymis generally increases at animals of 4 months of the F1–F3, but at the age of 6 months in the 1st generation falls, and correlates with a decrease in the number of epididymal spermatozoa. There is also a decrease in the absolute and relative mass of seminal vesicles in irradiated animals of three generations at the age of 2 months. At exposed animals of 3 generations of 2 months there are no significant deviations in the process of spermatogenesis, however at the age of 4 and 6 months there are significant violations of the number of spermatids of different types. In male rats of the 1st generation at the age of 2 and 6 months exposed to EMP in the prenatal and postnatal periods and obtained from irradiated parents, a drop in the number of epididymal spermatozoa is observed, while in the irradiated animals of the 2nd and 3rd generation at the age of 2 months, there is a marked increase in the number of these cells. Their viability is reduced in all age groups (2, 4 and 6 months), which is statistically significant at the age of 2 and 4 months of animals of the 1st generation. In male rats of 1–3 generations at the age of 2 months and in 4 months 2nd generation, there was a significant decreased the concentration of testosterone in the blood serum by 65.8, 43.6, 82.8 and 93.4 %, respectively. Conclusions: The long-term effect of low-intensity electromagnetic radiation from the mobile phone on the body of rats of males and females, leads to a decrease in the birth rate of irradiated animals, which reaches 45 % in the third generation. Significant changes in the studied indicators of the reproductive system of male rats of three generations are revealed, which is reflected in a decrease in the number of epididymal spermatozoa in the 1st generation and in a significant increase in the 2nd and 3rd generation – early puberty, in the fall of their viability and the predominant decrease in the concentration of testosterone in the blood serum.

Chronologic changes in the clinicopathologic findings and survival of gastric cancer patients.

1997 ◽  
Vol 15 (12) ◽  
pp. 3471-3480 ◽  
Author(s):  
K Kitamura ◽  
T Yamaguchi ◽  
K Sawai ◽  
S Nishida ◽  
K Yamamoto ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Survival Rate ◽  
Cancer Patients ◽  
Third Generation ◽  
The Third ◽  
Three Generations ◽  
Stage 4 ◽  
Clinicopathologic Findings ◽  
Gastric Cancer Patients ◽  
Postoperative Survival Rate

PURPOSE To determine the chronologic changes in the clinicopathologic features of gastric cancer patients. PATIENTS AND METHODS The clinicopathologic findings of 1,795 patients with gastric cancer were examined retrospectively from hospital records obtained between 1969 and 1995. The patients were divided into three generations on the basis of chronologic order. The first generation included patients treated over the period 1969 to 1977; the second generation, 1978 to 1986; and the third generation, 1987 to 1995. RESULTS The chronologic changes in the clinicopathologic findings for all gastric cancers included increases in the superficial type based on macroscopic appearance (P < .005), small-sized tumor (P < .025), superficial depth of invasion (P < .005), and earlier histologic stages (P < .005), in addition to a decrease in lymph node metastasis (P < .005). Overall, the postoperative survival rate has improved over time in gastric cancer patients, with 5-year survival rates of 36.0%, 53.3%, and 68.6% in the first, second, and third generations, respectively. In stages 1,2, and 3, the survival rate in the third generation was the highest of the three generations, whereas in stage 4, the survival rate did not differ between the three generations. Patients who underwent a D2 dissection showed a higher survival rate than those with D1 or D3 dissections, but there was no statistical difference in the survival of patients with D1, D2, and D3 dissections when stage 4 patients were excluded. CONCLUSION The chronologic changes in gastric cancer patients over the past 27 years have included an increase in the incidence of earlier-staged gastric cancers, which has had a significant impact on the improved postoperative survival rate.

Research on Wool Improvements in Modern Shanxi

2011 ◽  
Vol 282-283 ◽  
pp. 535-538
Author(s):  
Ai Li Xiao ◽  
Xing Mei Guo
Keyword(s):  
Impurity Content ◽  
Comprehensive Analysis ◽  
Third Generation ◽  
Merino Wool ◽  
The Third ◽  
Three Generations

This article researched on wool improvements in Modern Shanxi, compared the qualities of Merino wool, Shanxi wool and three generations of hybrids wool. It made a comprehensive analysis on wool fineness, wool length, crimp contraction, impurity content, grease content, wool color and etc. The results showed that after the three times’ hybridization, the wool qualities had great improvements, the third generation hybrid’s wool qualities were close to the Merino wool. The wool length was 0.023mm, the percent of fine wool was 100%, the crimp contraction in 3cm length was 15~21, the average wool length was 11.2cm, impurity content was 13.9%, grease content was 25.6%.

scholarly journals GENETIC DIVERSITY ANALYSIS OF the first and second generations OF FAST-GROWING STRIPED CATFISH (Pangasianodon hypophthalmus Sauvage,1878) USING MICROSATELLITE ANALYSIS

2018 ◽  
Vol 13 (1) ◽  
pp. 1
Author(s):  
Huria Marnis ◽  
Evi Tahapari ◽  
Jadmiko Darmawan
Keyword(s):  
Genetic Diversity ◽  
Genetic Variation ◽  
Selective Breeding ◽  
Microsatellite Analysis ◽  
Breeding Program ◽  
Diversity Analysis ◽  
Pangasianodon Hypophthalmus ◽  
Fast Growing ◽  
Striped Catfish ◽  
Inbreeding Level

Genetic diversity is an important aspect of a selective breeding program to produce fish broodstock carrying superior traits such as fast-growing, disease resistant, and other traits. We have carried out a breeding program to produce a fast-growing striped catfish (Pangasianodon hypophthalmus) since 2010. The aim of this study was to evaluate the genetic variation of the first (G-1) and second (G-2) generations of fast-growing striped catfish using microsatellite analysis. The G-1 and G-2 populations were selected individually from populations. DNA samples were collected from 40 ind. fish of each population and analyzed using five microsatellite loci (Pg1, Pg2, Pg3, Pg13, and Pg14). The results showed that the number of alleles per loci in the G-1 and G2 populations ranged from 4 to 7 alleles, with an average of five for each generation. The average of observed heterozygosity of the G-1 population (0.420) was lower than the G-2 population (0.495). Inbreeding level showed that the G-1 population was more inbred than the G-2 population. The study also found that both striped catfish populations had relatively low genetic variation. This result suggests that monitoring of genetic variation and better scheme of good spawning were needed on the next selection program to produce the intended fast-growing striped catfish.

scholarly journals In Search for Canon of Singapore Malay Poetry: Reflection on Nature, Race, Religion and Love

2013 ◽  
Vol 26 (1) ◽  
pp. 1-17
Author(s):  
Hadijah Rahmat ◽  
Keyword(s):  
Bilingual Education ◽  
First Generation ◽  
Second Generation ◽  
Colonial Period ◽  
Third Generation ◽  
Political Values ◽  
Early Attempt ◽  
The Third ◽  
Three Generations ◽  
British Colonial

This paper discusses selected poems by three generations of Malay writers in Singapore from the first generation poets who received their vernicular education during British colonial period, before Malayan Independence in 1957; to second generation writers who received Malay education when Singapore was part of Malaysia, 1957-1965 who established their poems in 1970s; and the third generation writers who received bilingual education who began to make impacts when Singapore become a Republic in 1980s. These iconic poems embody the easthetic as well as the cultural and political values of Malay society. It is an early attempt to define and search for canon of Singapore Malay poetry. Keywords: literature, canon, poetry, Singapore, culture, identity, values

scholarly journals Population density of grape moth in the Lower Don region.

2020 ◽  
Author(s):  
M.I. Murzina ◽  
Keyword(s):  
Population Density ◽  
First Generation ◽  
Pheromone Traps ◽  
Third Generation ◽  
Economic Threshold ◽  
Pest Population ◽  
Protective Measures ◽  
The Third ◽  
Experimental Field ◽  
Three Generations

The article introduces a study in the field of monitoring the number and density of the population of grape moth using pheromone traps. In the course of this research, we found that the grape moth in 2019 developed in three generations. On the night peak flight, the largest pest population in the first generation was 2–3 insects/day; in the third generation – 1 insect/day. The population density of the grape moth in the conditions of the Novocherkassk branch of the Experimental field did not exceed the economic threshold and during the development of three generations was low. Hence, protective measures were not carried out.

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