The experiment was implemented in order to assess the growth, performance and palatability of two grasses VA06 (Varisme 06) and Ghine TD58 (Panacum maximum TD 58) grown as feed for beef cattle in Ea Kar District, Dak Lak Province. The results showed that VA06 and Ghine TD58 well developed in Ea Ka district. VA06 potentially strong sprout buds were 24.45/dust, while the TD Guinea grass shoots were 10 buds/dust. VA06 grass height at 60 days of age reached 190 cm and, trunk diameter of 2.35 cm. While Ghine TD58 reached 0.96 cm at 60 days. The fresh yield of VA06 and Ghine TD58 was 515.2 and 360 tons /ha/year, and dry matter yield was 83.57 and 73.94 tons/ha year; and the crude protein yield was from 8.19 to 8.74 tons/ha/year, respectively. Beef cattle loves eating both two these grass varieties, edible ratio was high (from 96 to-100%) when grass was cut from 30 to 40 days.

The objectives of this study were to select and to identify thermotolerant yeasts for their application in pineapple fermentation at high temperature, and to study the optimum conditions for pineapple wine production. Seven isolates of thermotolerant yeasts (Y8, Y32, Y34, Y54, Y80, and Y81) were selected based on their high fermentative capacity with the ethanol content produced ranging from 4.17% to 7.45% (v/v) at 37°C. The isolate Y8 was a target selected yeast strain as having the highest ethanol contents at 37oC and 40oC of 7.45% (v/v) and 4.18% (v/v), respectively. The strains of Y8, Y32, Y34, Y54, Y80, and Y81 were identified as Saccharomyces cerevisiae and YVN7 was recognized as Candida glabrata. The optimum fermentation conditions for pineapple wine production by S. cerevisiae Y8 at 37oC were as follows: 5 days of fermentation, 18.6°Brix of initial sugar and yeast inoculum density of 107cells/mL, with ethanol content of 10.03% (v/v) and fermentative yield of 80.85% were achieved.

The stability of betacyanin in fruit juice produced from red-fleshed dragon fruit (Hylocereus polyrhizus) was investigated. The objective of the study was to determine the effects of the addition of ascorbic acid, the pasteurization regime as well as different storage conditions [i.e. in brown/transparent glass bottle, stored in light at room temperature (30±2oC) or in dark in cooling chamber (13oC)] for 3 weeks, on the betacyanin content in the final product. UV-visible spectrophotometry at 538nm was used for analyzing the betacyanin content. In addition, to ensure the safety of product, the Pasteurisation Unit (PU) value was calculated. The results showed that the addition of 0.2% ascorbic acid, pH 4.0, and pasteurization at 80oC for 15 min (calculated PU-value, 5.33 min) were selected as the best processing conditions to retain betacyanin in red-fleshed dragon fruit juice. The storage conditions had a significant effect on the betacyanin retention. Storage of red-fleshed dragon juice packed in the brown glass bottles at room temperature with light exposure for 3 weeks, showed a 52% betacyanin retention compared to that of the juice packaged in the transparent glass bottles (20% retention). Under a storage for 3 weeks in the dark at 13oC, both types of packagings showed an almost similar betacyanin retention (i.e. > 90%).

To evaluate the efficacy of Aloe vera on treating disease caused by Escherichia coli in mice and ducks infected E. coli at LD50, the methanol extract of Aloe was administered to mice at doses of 0.01, 0.02 and 0.03 g/mouse/twice/day. The ethanol extract of Aloe was administered to ducks at doses of 0.02, 0.03 and 0.04 g/kg B.W/twice/day. The results showed that methanol extract of Aloe had good efficacy on treating E. coli in mice, the best was in the treatment of 0.03 g/mouse/ twice/day with the cured rate of 94.4%. Aloe vera extracted by ethanol also had good efficacy on treating E. coli in ducks, the best was in the treatment of 0.04 g/kgB.W twice/day with the cured rate of 93.3%, more effective than colistin at the dose of 0.5g/kgB.W/twice/day with the cured rate of 86.7%.

Mục tiêu nghiên cứu nhằm xác định ảnh hưởng của bón phân lân phối trộn DCAP đến hàm lượng lân hữu dụng trong đất và hấp thu lân của cây khoai lang, khoai mì và khoai mỡ trồng trong nhà lưới trên biểu loại đất phèn được lấy tại xã Hoà An, huyện Phụng Hiệp, tỉnh Hậu Giang. Thí nghiệm nhà lưới từ tháng 2/2014 đến tháng 8/2014, được bố trí theo thể thức khối hoàn toàn ngẫu nhiên, gồm 5 nghiệm thức: (i) không bón lân; (ii) bón 30 kg P2O5ha-1(30P); (iii) bón 30 kg P2O5ha-1 phối trộn DCAP (30P+DCAP); (iv) bón 60 kg P2O5ha-1 (60P) và (v) bón 60 kg P2O5ha-1 phối trộn DCAP (60P+DCAP). Chất DCAP được sử dụng ở nồng độ 2‰. Kết quả thí nghiệm cho thấy, bón 30P+ DCAP đã làm gia tăng hàm lượng lân hữu dụng trong đất trồng khoai mì và khoai mỡ ở cuối vụ, tương đương với bón 60P. Tuy nhiên, phối trộn DCAP với lân ở liều lượng cao hơn (60P) chưa làm gia tăng hàm lượng lân hữu dụng trong đất so với không phối trộn. Bón phân lân ở liều lượng 30 kg P2O5/ha phối trộn DCAP cho hấp thu lân của cây khoai mì tương đương với bón 60 kg P2O5/ha. Bón lân phối trộn DCAP chưa làm gia tăng hấp thu lân trên cây khoai lang và khoai mỡ. Tóm lại, hiệu quả của DCAP chưa nhất quán trong gia tăng hàm lượng lân hữu dụng trong đất và năng suất cây trồng.

Soybean [Glycine max (L.) Merrill] is the most important crop in rotation farming with rice due to its ability to fix nitrogen and improve soil structure. However, many pests can cause significant yield loss in soybean production. One of the most important pests of soybean in the Mekong Delta is the legume pod borer (Etiella zinckenella) because of reducing soybean yield and quality. The objective of this study is to determine the responses of nine soybean lines to the damage level caused by E. zinckenella. The experiment was arranged in a randomized complete block design with three replications in the Spring-Summer 2015 at Can Tho University’s experimental station. The results showed that nine soybean lines were infected by pod borer. However, MTĐ 860-1 is the most tolerant line and is rated as moderately resistant (MR) while the other four varieties MTĐ 860-3, MTĐ 861-1, MTĐ 865-3, MTĐ 885-1 are classified as relative resistance (RR) to E. zinckenella. The infestation percentage in pods and grains of MTĐ 860-1 were 3.66% and 3.43%, respectively. In contrast, percentage of pod damage and yield loss was highest on ĐH4 by 9.96% and 8.60% respectively. However, significant difference in yield was not detected among the nine soybean lines.

The objectives of the study were to evaluate the rice growth, grain yield and agronomic efficiency (AE) of urea fertilizer supplemented nBPT and Neb26 with reducing nitrogen (N) fertilizer applications 75%N and 50%N. The study was conducted at the rice field on Autumn-Winter 2014 in Tam Binh, Vinh Long. The experiment was designed in a completely randomized block with 4 replications of 5 treatments including 0N, 100%N, 75%N-nBPT, 75%N-Neb26, and 50%N-Neb26. The results showed that reducing 50%N-Neb26 did not affect the tiller number but decreased the rice height at the harvest stage. The rice grain yield, yield components as well as N uptake in plants were not affected by N reduction of 25% to 50% in combination with nBPT and Neb26. Application of 50%N-Neb26 had a higher agronomic efficiency than 100%N application.

Optimal use of land surrouding farmer's house in order to enhance farmers income was objective of this study. The study was carried out in Tra Hat hamlet in order to support the farmers plan properly their land based on household resources under changes in market prices. Consequently, it helps increase farmers’ income, reduce market risks, and improve employment issue in this area. Data from a household survey were analysed by using the solver software tool. The results showed 12 production cases indentified following farmer hosehold resources including finance, labuor and land. In addition, 3 scenarios of price changes which affected land use distribution (a decrease by 25% in pig price; an increase by 20% in fruits, vegetable and fish price; and an increase by 5% in fruits, vegetable and fish price plus a decrease by 15% in pig price) were set up to maximize farmer’s revenue. The study’s results also help local authorities orient efficient uses of local land resources to sustainable socio-economic development of the area.

Studying on snakeskin gourami culture system in Hau Giang province was conducted from May to December 2015 through interviewing 47 households culturing snakeskin gourami for evaluating technical and economic aspects and identifying advantages and disadvantages of snakeskin gourami farming system. Results showed that the area of snakeskin gourami cultured pond was not large (0.16 ha/pond). Fingerlings were stocked from February to March (Lunar calendar). After 293 days of culture, snakeskin gourami were harvested with average yield of 23.97 tons/ha/crop, body weight of 94.03 g/fish, and feed conversion ratio (FCR) of 2.32. In addition, with production cost of 814 million VND/ha/crop, gross income of 1,138 million VND/ha/crop, net income was 324 million VND/ha/crop and benefit per cost ratio was 0.39. The biggest difficulty was long duration culture, culturing one crop per year only.

The study on the use of drug, chemicals and probiotic in red tilapia cage culture was done through interview of 86 red tilapia farming households in provinces of An Giang, Tien Giang, Dong Thap and Vinh Long. The results showed that swollen head and eyes and body hemorrhage were common bacterial diseases reported by 81.8 – 100% interviewed farmers. Most farmers did not know the cause of bacterial disease but antibiotics were used to treat bacterial disease whereas disinfectants were used to prevent parasite infection. Most of farmers have not known about the antibiotic susceptibility testing (antibiogram) during using antibiotic treatment. The most common antibiotics were mixture of sulfonamide and trimethoprim, amoxicillin, doxycycline and florfenicol. When farmer sell red tilapia to retailers or local markets, antibiotic residue testing was not done which pose a high risk on human consumption. There is an urgent need to provide  farmers training courses on disease diagnosis, and proper use and handling chemicals in red tilapia aquaculture.

The study is aimed to examine the current status of parasitic infection on cobia (Rachycentron canadum) cage cultured at 4 islands (Phu Quoc, Tien Hai, Hon Nghe and Nam Du), Kien Giang province. A total of 75 cobia samples, including 49 fingerling and 26 growth-out samples, were collected from 36 cages. Fish specimens were recorded clinical signs and examined parasitic infection. Results showed that six ectoparasites (Amyloodinium ocellatum, Cryptocaryon irritans, Trichodina sp., Neobenedenia sp., Pseudorhabdosynochus sp. and Parapetalus sp.) and three endoparasites (Leptorhynchoides sp., Procamalanus sp. and Anisakis sp.) were found. Leptorhynchoides sp. showed the highest prevalence (95%) and intensity (1-14 worms/fish), while Anisakis sp. was the lowest intensity (2-8.3 worms/fish). Neobenedenia sp. were the most common parasite with high prevalence (62.5%) and intensity (3-160 worms/fish) of all stages of cultured cobia. Remarkably, two species A. ocellatum and C. irritans were recorded the prevalence of 82.6 and 90.3% respectively, were the most important pathogenic parasites causing rapid mortality for fingerling and juvenile cobia in Phu Quoc and Hon Nghe island.

This review synthesized studies on sex determination, scientific basis, approaches, and achievements in sex reversal of giant freshwater prawn (GFP) (Macrobrachium rosenbergii) around the world. GFP has a ZW sex determination system, where sex chromosomes are homozygous (ZZ) in males and heterozygous (ZW) in females. Sex differentiation of this species is controlled by protein-like hormone of the androgen gland. Males whose androgen gland is ablated (andrectomy) or in-activated by using RNA interference (RNAi) will develop to neo-females. Mating of these neo-females with normal males produces monosex males. These approaches have been applied successfully in commercial farming of GFP. However, the use of artificial hormone such as 17 α-methyltestosterol was not successful in sex reversal of GFP.

The study was conducted to evaluate the converting of intensive shrimp farming from black tiger shrimp (BS) to white leg shrimp (WS) systems in Soc Trang province through interviews 30 BS farmers and 30 WS farmers from June to December 2015.  The collected information includes (1) the technical and financial aspects and (2) the factors affected to farmers’ decisions. The results showed farming seasons, stocking density, survival rate, productivity and harvest size in BS farms (1-2 seasons, 27.13 shrimp/m2, 66.37%, 2.5 tons/ha/season, 63.77 shrimp/kg) were lower than that of WS farms (2-3 seasons, 55.43 shrimp/m2, 67.13%, 4.05 ton/ha/season, 95.37 shrimp/kg). Total cost of WS farms (347.8 VND million/ha/crop) was higher than that of BS (299.2 VND million/ha/crop). Profit in WS farms (135.7 VND million/ha/crop) was also higher than that in BS farms (96.5 VND million/ha/crop). There were four reasons leading to the converting decision in the shrimp farming system. They include diseases, culture duration, benefit per cost and environment. Fifty five percent  of shrimp farmers had a desire to keep WS farming system in the future; 23.3% of them tended to BS farming in the upcoming crop; 15% favored both systems and 6.7% switched to other species. Shrimp yield was in a linear relationship with stocking density, survival rate, culture period, harvest size and FCR.

The present study was conducted to evaluate the effect of gelatin coating incorporated with gallic or tannic acid on the quality of frozen Tra catfish (Pangasianodon hypophthalmus) fillet. The results showed that the texture and sensory quality of sample coated in gelatin solution at the concentration of 1.5% incorporated with 2% gallic acid of or 2% tannic acid of was not affected to the product. However, peroxide values (1.25 and 1.2 meq/kg) and TBARS index (3.01 and 2.91 mgMDA/kg) of samples coated in gelatin-gallic acid or tannic acid were significant different and lower than samples coated in sodium tripolyphotphate-STPP (1.61 meq/kg and 4.37mgMDA/kg) and the blank (2.64 meq/kg and 5.44 mgMDA/kg). The results indicated that using gelatin coating combined with gallic or tannic acid could effectively by prevent the lipid oxidation of Tra catfish fillet during the frozen storage.

Fluctuation of abundance and effect of green seaweeds on shrimps cultured in the improved extensive farms were investigated monthly from May 2015 to April 2016 at Bac Lieu and Ca Mau provinces. Results indicated that coverage percentage of seaweeds varied from 20% to 90% of farm area, green seaweed abundances and their natural productivities were relatively high with average ranges of 0.6-3.1 kg/m2 and 1.7-16.8 ton wet weight/ha, respectively. These parameters were greatly changed during sampling period, of which green seaweed productivity positively correlated with salinity in the farm. It was also found that development of seaweeds as indicated by coverage percentage largely influenced on water quality and shrimp yields in these farms as well as income of farmers. At coverage of >50%, the dissolved oxygen (DO) levels, and pH showed large variation during the day (DO: 3.2-6.8 mg/L and pH: 7.1-9.2). When seaweeds collapsed and decomposed, this caused high contents of NO2- (4.87±1.70 mg/L) and H2S (0.03±0.02 mg/L) resulting in detrimental effects on shrimps. Moreover, at coverage of ≤50%, shrimp yields and farmer incomes (233.4±98.1 kg/ha/year and 41.6±15.5 million VND/ha/year) were significantly higher (p50% (48.1±39.9 kg/ha/year and 13.3±6.5 million VND/ha/year). Therefore, it is recommended that farmers should maintain suitable coverage of seaweed in their farms within 50% of farm area.

Needs analysis in learning foreign languages is a requisite for making decisions related to determining program objectives, designing curriculum and materials, selecting appropriate methodology of teaching and evaluation. This article presents results of the survey on learners’s needs with the aims of providi ng information for predicting possible trends of language learning in Can Tho City in the era of integration in the region and in the world.

The article mentioned teaching the precise definition of a limit from a particular case. Next, some teaching and learning activities have been built to reduce the difficulties of students when they learn about that abstract definition through the process of the mathematical modeling. From that, students will have a profound understanding of the connection between the concept of the limit and reality.

In the first years of the second decade in XXI century, people have seen the recovery of economy and position of US in the world politics while concerning about the incredible rise of China. After submitting the “nine-dash-line” map to the United Nations for territorial claim on The South China Sea (East Sea), China has attacked strongly to world politics to set up their position. With the impressive growth in recent years, will China be the leading nation of the world like US? US and China will set up the new world order? Compared to US, China still has thier own challenges in politics, economy as well as international influence. The reasons why China has not been with US to establish the bipolar world order in the second decade of XXI century will be analyzed in this paper.

Cross-border marriages and/or marriage migration has long time development with various forms depending on the purpose of migration. Since 1990s, there has been a rising trend of women in the Mekong delta getting married to Tawainese and Korean. Study on cross-border marriages is to emphasize social issues, family’s livelihoods and communities’ perceptions about this phenomenon. Besides looking through the risks caused by cross-border marriage, the study investigates brides’ contribution to household economic development, recognizes the physical and spiritual values that affected to families’ and communities’ norms. The research was implemented in Phuong Binh and Luc Si Thanh communes in the Mekong Delta. The results show that decisions for cross-border marriages are determined by brides themselves; the possibilities of unluckiness depend on the lack of initial preparation stage but most of brides are reckless of consequence and less-preparatory for lives’ changes. However, so far the satisfaction level of families on their daugters’s marriage is rather high, the contribution of the brides to household economic development is acknowledged.

Historical-cultural relics are an important part of the cultural heritage system and are a valuable resource for tourism development. The exploitation of historical - cultural relics for tourism development not only brings socio-economic benefits, but also contributes to the preservation and promotion of the value of the relics. This article is analyze the status of exploitation of historical-cultural relics in tourism in Binh Thuy district and propose some solutions to promote the value of historical-cultural relics in tourism, contributing to enhancing tourism development in Binh Thuy district in particular and Can Tho city in general.

The purpose of this study was to describe the students’ ability to translate informative advertisements by investigating their opinions about the linguistic difficulties in the translation practice and the linguistic difficulties they actually faced. The data were collected by using a 35-item questionnaire and a translation test on 41 English Interpretation – Translation seniors at Can Tho University. The findings showed that the students’ ability to translate informative advertisements was average, and lexical differences between Vietnamese and English posed great challenges to novices while grammatical ones were not a big issue. The results of this study would help translation students at Can Tho University be better aware of advertising translation and more well-equipped with professional knowledge and skills in order to attain more employment opportunities, especially those related to this field.

Determining the factors that have influences on the vocational training needs of rural labors in order to analysing these factors’ influences on rural workers’ demand. Through analysing, in the study, the authors suggests some solutions for vocational training in the local area, which can increase the quality of vocational training as well as contribute to the success of the new rural program. The study is focused on rural labors in Vi Tan village, Vi Thanh city, Hau Giang province to analyse the influenced factors on vocational training needs in rural areas through the social survey. The result of Binary Logistic shows that the factors which affect vocational training demand are vocational training information (B = 1.346), labour resources at household level (B = 1.291) and the number of people in the household (B = 1.214). Some solutions such as improving the quality of vocational training and operating the training classes which meet the local needs are suggested to encourage rural workers to uphold their potential.

The meeting level of the elderly’s needs plays a crucial role in boosting their mood and feeling progressing in a positive way. Elderly people have a wide range of physical and spiritual demands, from basic level to advanced level. In 27 of the elderly’s needs, there are 20 needs that are evaluated at the meeting, 6 at neither meeting nor not meeting and 1 at not meeting. The meeting level of the elderly’s needs have statistically significant differences from their previous main occupations, housing types, relatives living in the same house, sanitary conditions, recreational facilities, vehicles, current source of life, health status, the level of implementation of recreational activities, cultural enjoyment and exercise daily, household type. These results are the product of feedback from 128 respondents in Ben Tre province with convenient and snowball sampling techniques. In this research, descriptive statistics analysis, independent-samples T-test, one-way ANOVA and bivariate correlation analysis are conducted for analysing the primary data.

Studying the Mammy symbol in the novel Gone with the Wind as a cultural phenomenon, this article is to attempt finding out the symbolic meanings of that character. Mammy’s happy life is a way of Margaret Mitchell to romanticize the slavery, and when slavery was only the remnants, Mammy is the last root that southern Whites want to keep. Flourished in the novels and films of the South, Mammy has become a popular cultural symbol, beneficent for Whites but nacceptable for Blacks.

Recently, gender issue has increasingly been considered and researched. To analyze the division of labor and roles of gender in improved extensive farming model of black tiger shrimp, the study was conducted by interviewing 60 shrimp farming households in Bac Lieu province. Research results showed that the majority of shrimp farmers were male in middle-aged group with low education level. Shrimps were producedin the whole year with high stocking density and productivity of 48 kg/ha/year, low cost with high profit and profit margin ratio (2.63 times). The division of labor in the model was uneven. The majority of men participated in most activities of the shrimp farming (more than 75% of the households). Women participated in most of activities but at low level. When activities were done by both gender, men contributed more than 80% of workload. Female roles were especially important in housework, money management and family care. The ability of women to engage in work was limited due to low level of education and technology and inadequate health conditions. Total average income of the household was259.5 million VND/year, in which female contributed 17.3%.

After the Geneva Accords, against the terrorist activities and fierce crackdowns by the U.S. - Diem authorities is the process of tough struggling for preserving and strengthening the revolutionary forces of Can Tho’s military and people. Over nearly 5 years of struggling to build and develop the revolutionary forces, military and people of the land of Tay Do made a marvelous Dong Khoi, a resounding victory in 1960, which marked an important turning point for the revolutionary situation in the whole province, i.e. the transition from forces preservation to powerful offensive against enemy.

Conceptual metaphor is a concept of cognitive linguistics. This article studies the conceptual metaphors in Huy Can’s poem, ‘Trang giang’. The aims of the article are, on the one hand to introduce general and familiar metaphoric images used by the Vietnamese, and on the other hand, to analyze and explain creative factors in concretizing the conceptual metaphors by Huy Can through ‘Trang Giang’. Such bases are helpful in recognizing the poet’s talent, unique, and creativity in his successfully using the elements of Vietnamese language to build up the unique beauty of the poem.

The study is conducted to identify factors affecting satisfaction on conducting scientific research among young lecturers in Can Tho University. The data was collected from 141 young lecturers who have been teaching and researching at Can Tho University. The structural equation modelling was used in this study. The results showed that there were five factors as financial policy, leaderships, amount of work, management and materials that affect the satisfaction level of young lecturers; in particular, the financial policy factor has strongly impacted on the scientific satisfaction of young lecturers in Can Tho University.

From the interpretation of the historical novel, the article analyses the concept of historical novel by writers of the South. The key point in the conception of the Southern writers of historical novels be analyzed are: the historical novel should ensure historical accuracy with considerable events, character involved directly into the events of history, the role of central character and has the purpose of reconstructing history from the orthodox viewpoint. The attention to aspects of the daily lives of historical figures is also considered an aesthetic advancement of Southern writers.

Nowadays, human beings are approaching the intellectual economy with modern and high technology. However, they are facing big challenges, namely environmental pollution, climate change, and increasing decline in agricultural resources, especially land for food production. This brings about the need of assuring food security for each nation and the whole world. Nevertheless, before regional and national food security is assured, food security at household level must be strengthened. To provide a practical basis for ensuring household food security in the Mekong Delta, the questionnaire was used for data collection from 300 respondents. The results of descriptively statistical analysis, correlated to regression based on trends in income per household show that: At present, there still exists households in the regional granary who do not have enough income to get sufficient food supply. Therefore, in addition to the solutions concerning producing, it is essential to increase the income of households, and be assured that households producing food have their income not lower than the general level of the society so that food security at household level in the Mekong Delta will be sustainable.