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Comparing Morphological and Reproductive Biology Characteristics of Two Fresh-Water Snail Species, Pila politaand Pila gracilisfrom Dong Thap Province

Ngo Thi Thu Thao, Le Van Binh

Received: 31-10-2017 / Accepted: 25-12-2017
This study compared several morphological characteristics and reproductive biology of two fresh-water snail species, Pila polita(Pp) and Pila gracilis(Pg). The colors of the snail shells change over the stages in their life. With shell height <25 mm, Pp and Pg show green-yellow and green-dark color, respectively; with shell hight larger than 25 mm, Pp shell is green-dark and Pg is brown-yellow. Pila politaand Pila gracilisshow a close correlation between morphological characteristics such as shell height with shell width, shell height with total weight or shell height with meat weight. Results of broodstock conditioning and observations of some reproductive biology characteristics of two species showed that the weight and diameter of snail eggs, shell height and weight of newly hatched snails from Pila politawere higher than those from Pila gracilis(p<0.05).
Status of Metritis in Dairy Cows in Household Farms and Treatment Protocol

Nguyen Van Thanh, Nguyen Ngoc Son

Received: 18-04-2017 / Accepted: 26-07-2017
Metritis in dairy cows is a common disease that causes considerable economic loss to dairy cow husbandry. This study aimed to assess the status ofmetritis in dairy cows in livestock farms and to recommend an appropriate treatment protocol. The study consisted of direct survey and interviewof cow breeders, information gathered from local veterinary staff, antimicrobial susceptibility testing, percentage of cured cases, treatment time and fertility of cows following treatment. Results indicated that the proportion of metritis of dairy cows in livestock farms in some localitiesin Nortvietnamwas22.05%, in which63.49%in postpartumperiod and36.51%in insemination waiting period. Among all inflamations,endometrial inflammation, uterine inflammationand endometrial inflammationwas 80.42%, 15.34% and4.23%, respectively. Norfloxacin combined with PGF2α was highly effective fortreatment metritis in dairy cows.
Effects of Intercropping Mungbean and Sugarcane on Soil Property, Sugarcane Yield in acid Sulfate Soil in Long My District - Hau Giang Province

Nguyen Quoc Khuong

Received: 11-10-2019 / Accepted: 04-05-2020
The objective of this study was to evaluate the effects of intercropping mungbeanand sugarcane on several soil properties and sugarcane yield in acid sulfate soil in Long My district - Hau Giang province. The field experiment was a randomized complete block design including seven treatments. The combination of two varieties of mung-bean (CS-208 and DX-06) and three nitrogen levels (40, 60, 80kg N/ha) produced 6 treatments and control treatment as monocultural sugarcane, with four replications on each plot of 36m2.The results showed that two varieties of mungbean are suitable to intercropping with sugarcane. There was no significant difference in mung bean yield between nitrogen levels, but the treatment of intercropping mungbean with 80kg N/ha and sugarcane obtained higher sugarcane yield as compared to monocultural sugarcane. The intercropping of mungbean and sugarcane improved soil properties as organic matter, available ammonium concentration in top soil and higher sugarcane yield 21.7-24.7 tons/ha.
Analyzing Awareness of Swine Breeding Farms Toward Circular Waste Management in Hanoi

Nguyen Thi Huong Giang, Tran Cong Chinh, Ngo The An

Received: 21-12-2022 / Accepted: 18-04-2023
The study analyzed the awareness of swine breeding farms toward circular waste management in Hanoi. There were 177 swine breeding farms participated in the survey. The questionnaire for the survey was developed based on the basis of theories of behavioral psychology, especially the theory of Planned Behavior. The research results provided an overall picture of farmers’ perspectives on swine waste recycling. In addition, the study also used chi-square test and Fisher’s Extract test to compute the significant difference among farmers’ perspectives according to the main demographic factors, particularly age, education, gender, location, social relations, farm land ownership, and farming scale. From the results, the study proposed specific policy recommendations for promoting swine waste recycling toward a circular economy in the study area.
Sustainable Livelihood Development of Forest-dependent People in the Highland of BacKan Province

Nguyen Hai Nui, Nguyen Quoc Chinh, Do Quang Giam, Nguyen Thanh Lam

Received: 05-01-2018 / Accepted: 12-02-2018
The aim of this study was to assess sustainable livelihood development of forest-dependent people in the highland areas of Bac Can province. Data were collected through direct interviews of265 households living near forests in the districts of Ba Be and Na Ri. Descriptive statistics, comparisonsusing student T-test, Chi-square and Likert scale were used. Results revealed ahigh degree of the househods’ forest-dependence, limited income and medium sustainable livelihood development. High level of forest dependence was evidenced withthe fact that the higher forest-dependent strategy the lower level of sustainable development of livelihood. To enforce the policy of sustainable livelihood development, the government should adopt measures to reduce reliance on the forest, improve income for the households, and maintain social relationships and ecological environment.
Effect of the Different Organic Nutrient Solutions on the Vegetative Growth, Yield and Quality of Water Spinach Cultivated by Using Circulating Hydroponic Technology and Growth Media Bed

Nguyen Thi Ngoc Dinh, Pham Tien Dung, Nguyen Hong Hanh, Do Thi Thanh

Received: 24-03-2020 / Accepted: 16-04-2020
To determine the kind of organic nutrient solution which is conformed to the circulating hydroponic technology by using the growth media bed for water spinach. Experiment 1 was conducted to evaluate the effect of different concentrations of V.M 1954 organic nutrient solutions (0.5‰, 1.5‰ and 2.5‰) on the growth, productivity and quality of water spinach in summer season 2017 at Center for Organic Agriculture Promotion and Studies, Vietnam National University of Agriculture. The results showed that the concentration of 1.5‰ was optimal for the growth, development and productivity of water spinach. To further evaluate some more types of organic nutrient solutions as a hydroponic solution, experiment 2 was carried out to determine the effects of 03 types of organic nutrient solutions (V.M 1954, Vegano and TNC Hume) to the growth, yield and quality of water spinach by using a circulating hydroponic system and growth media bed in summer and summer-autumn seasons, 2019. The attained results indicated that the V.M 1954 organic nutrient solution was the best for the growth, yield and quality of water spinach. From the results of experiment 1 and 2, we have confirmed that water spinach could fully grow and well develop for good productivity and quality, and simultaneously reduce pests and diseases when grown in circulating hydroponic technology using growth media bed with organic nutrient solution V.M 1954 (1.5‰ concentration).
Factors Affecting Application of Management Accounting at Small and Medium - Sized Enterprises in the Trade and Service Sector in Hanoi City

Tran Nguyen Thi Yen, Phan Le Trang, Phi Thi Diem Hong, Nguyen Thi Hai Binh

Received: 28-11-2023 / Accepted: 12-06-2024
The purpose of this research was to analyze the factors affecting application of management accouting at Small and Medium- Sized Enterprises in the trade and service sector in Hanoi city. The data were collected from the seveys of 153 small amd medium-sized enterprises (SMEs) and then assessed using Cronbach’s Alpha method, Exploratory Factor Analysis and regression analysis. The research result shows 7 key groups of factors that affected the application of management accouting at SMEs in Hanoi city, where in the most influential factor was the awareness of managers or directors. Other factors include enterprise size and,accounting staff qualifications, enterprise culture, application cost, information technology and market competition level.
Effect of Hand Weeding and Planting Density on Weedand Growth and Yield of the RiceVariety HuongThuan 8 Grown Organically

Tran Thi Thiem, Nguyen Thi Loan, Thieu Thi Phong Thu

Received: 05-11-2022 / Accepted: 27-01-2023
This study was conducted to evaluate the effects of hand weeding and planting density on weed and growthand yield of the rice variety Huong Thuan 8 cultivated by organic method. The experimentwas arrangd in a split-plot design with three replications. Hand weeding was the main factor with 3 levels: no weeding (L0), hand weeding once at 20 days after transplanting (L1), hand weeding twice at 20 and 40 days after transplanting (L2), and regular weeding every 20 days until heading as weed-free check(L3); the sub-factor consisted of three plant densitytreatmentsas 30 hill/m2 (M1), 40 hill/m2 (M2) and 50 hill/m2 M3). The results showed that the increase in hand weeding combined with planting density reduced weed density, and weed dry mass, which led to an increase inweed control efficiency. Furthermore, there were significantdifferences in the growth traits (plant height, tiller number), the physiological traits (leaf area index, dry matter), yield components and grain yield when the number of hand weeding time increased from L0 to L2 and plant density increased from M1 to M3. However, there was no significant difference in the yieldbetween L2 and L3as well as between M2 and M3. The highest grain yield (4.34-4.47 ton/ha) was found at L2M2, L2M3, L3M2 andL3M3.
Effects of Nitrogen Fertilizers on Yield and Pharmaceutical Substances of Javanese Ginseng (Talinum paniculatumJacq.)

Nguyen Thanh Trung, Nguyen Thu Ha, Ha Van Tu, Nguyen Phuong Mai

Received: 20-12-2022 / Accepted: 04-08-2023
The study aimed to evaluate the effects of different levels and forms of nitrogen fertilizer on the growth, yield and contents of pharmaceutical substances of Javanese ginseng. The experiment was laid out in a randomized complete block design with three levels of nitrogen (60, 75 and 90kg N/ha) and three ratios of N-NH4+:N-NO3-(0:100, 50:50 and 100:0) with three replications. The results showed that the height, number of leaves, leaf area, SPAD index, fresh weight of roots and dry matter of Javanese ginseng increased significantly with the increase of nitrogen rate. Different ratios of N-NH4+:N-NO3- did not significantly affect the growth and development parameters of Javanese ginseng. In both harvest seasons, the NH4+form at 75kg N/ha resulted in the highest yield and saponin and flavonoid content, while maintaining NO3-content at optimal range.
Microalgal Composition in Fish Ponds at the Vietnam National University of Agriculture

Doan Thanh Loan, Nguyen Khanh Linh, Hoang Thi Tam, Le Thi Hoang Hang, Nguyen Cong Thiet, Hoang Dang Dung, Pham Thi Lam Hong

Received: 01-03-2023 / Accepted: 07-03-2024
This study was carried out to build a database of microalgae in fish ponds at the Fisheries Faculty of the Vietnam National University of Agriculture. Water samples were collected to examine the frequency of occurrence and microalgal composition in five aquaculture ponds. A total of 30 microalgal samples (15 from winter and 15 from summer) were analyzed in this study. The results showed that there were 136 microalgae species from 8 classes, 11 orders, 26 families, 49 genera, and 6 phyla (Euglenophyta, Chlorophyta, Cyanobacteriophyta, Bacillariophyta, Pyrophyta, and Xanthophyta). The number of microalgal species was abundant in summer. There were 27 microalgae species that could be used as live food for zooplankton. The occurrence of 12 microalgae species is a bioindicator of organic compound enrichment in water. There were three microalgae species that could cause harmful algal “blooms”.
Evaluation ofSalt Tolerance of Newly Collected Rice Accessions

Nguyen Anh Dung, Vu Van Liet

Received: 27-11-2023 / Accepted: 07-03-2024
This study was carried out to evaluate agronomic characteristics, salttolerance and the presence of QTL Saltolof newly collected rice accessions throughfield experiment,artificial salinity treatment and molecular identification. The experiments on agronomic characteristics and salt tolerance were carried out according to the method of IRRI, 1997 and 2013 at the FieldCrops Research Institute, Gia Loc district, Hai Duong province whilemolecular marker analysis was conducted at Vietnam National University of Agriculture, Gia Lam district, Ha Noi city. Theevaluation results showed that the rice accessions were diverse in growth duration, plant height, flag leaf length, and panicle length. Out of 39 accessions, 6 promising ones were selectedwith good salt tolerance: Lua soi, M3, HHZ8-SAL6-SAL3-SAL1, HHZ8-SAL6-SAL3-Y2, HHZ12-SAL8-Y1-SAL1 and Hasawi IRGC 16817and 22 rice accessions carrying SaltolQTL. Thus, the selection of materials for breeding salt-tolerant rice varieties should combine the evaluation of agronomic characteristics with artificial salt tolerance assessment and molecular markers.
Microalgal Composition in Fish Ponds at the Vietnam National University of Agriculture

Doan Thanh Loan, Nguyen Khanh Linh, Hoang Thi Tam, Le Thi Hoang Hang, Nguyen Cong Thiet, Hoang Dang Dung, Pham Thi Lam Hong

Received: 01-03-2023 / Accepted: 07-03-2024
This study was carried out to build a database of microalgae in fish ponds at the Fisheries Faculty of the Vietnam National University of Agriculture. Water samples were collected to examine the frequency of occurrence and microalgal composition in five aquaculture ponds. A total of 30 microalgal samples (15 from winter and 15 from summer) were analyzed in this study. The results showed that there were 136 microalgae species from 8 classes, 11 orders, 26 families, 49 genera, and 6 phyla (Euglenophyta, Chlorophyta, Cyanobacteriophyta, Bacillariophyta, Pyrophyta, and Xanthophyta). The number of microalgal species was abundant in summer. There were 27 microalgae species that could be used as live food for zooplankton. The occurrence of 12 microalgae species is a bioindicator of organic compound enrichment in water. There were three microalgae species that could cause harmful algal “blooms”.
Evaluation ofSalt Tolerance of Newly Collected Rice Accessions

Nguyen Anh Dung, Vu Van Liet

Received: 27-11-2023 / Accepted: 07-03-2024
This study was carried out to evaluate agronomic characteristics, salttolerance and the presence of QTL Saltolof newly collected rice accessions throughfield experiment,artificial salinity treatment and molecular identification. The experiments on agronomic characteristics and salt tolerance were carried out according to the method of IRRI, 1997 and 2013 at the FieldCrops Research Institute, Gia Loc district, Hai Duong province whilemolecular marker analysis was conducted at Vietnam National University of Agriculture, Gia Lam district, Ha Noi city. Theevaluation results showed that the rice accessions were diverse in growth duration, plant height, flag leaf length, and panicle length. Out of 39 accessions, 6 promising ones were selectedwith good salt tolerance: Lua soi, M3, HHZ8-SAL6-SAL3-SAL1, HHZ8-SAL6-SAL3-Y2, HHZ12-SAL8-Y1-SAL1 and Hasawi IRGC 16817and 22 rice accessions carrying SaltolQTL. Thus, the selection of materials for breeding salt-tolerant rice varieties should combine the evaluation of agronomic characteristics with artificial salt tolerance assessment and molecular markers.
Afforestation Linkage Model with FSC Standards in Tuyen QuangProvince

Do Hai Yen, Nguyen Tuan Son

Received: 25-09-2019 / Accepted: 15-11-2019
The present study wasaimed at investigating the current statusof afforestation linkage model with the Forest Stewardship Council (FSC)standards in Tuyen Quang province. Systematic and participatory approach methods were used. Basedon a survey of 120 forest plantinghouseholds, the study revealedthat additional income of households who participated in the linkage model and were able to sell FSC certified timber was 10-15% higher than non-participating households. Although many benefits from FSC afforestation linkage model, the forest area with FSC of households in Tuyen Quang provincewere attained, the afforestation was still in smallscaleand farmers still did not actively participate in the model. The study therefore recommended feasible solutions in order to develop afforestation linkage model with FSC standards in Tuyen Quang province such as enhancing the household’s awareness about benefits of model; establishing an effective permanent linkage structure between wood processing companies and farmers; local governments should play a role in the linkage by supporting and connecting between the two parties.
A New Similarity Measure of Picture Fuzzy Sets and Its Application to Data Clustering

Le Thi Dieu Thuy, Nguyen Huu Hai, Nguyen Van Hanh, Do Thi Hue

Received: 08-07-2019 / Accepted: 26-08-2019
The Jaccard index is a statistic used for comparing the similarity and diversity of sample sets. In this paper, we proposeda new similarity measure for picture fuzzy sets based on the Jaccard index.We then comparedthe proposed similarity measure with some existing similarity measures and showedthat the new similarity measure overcomes the restrictions of the existing similarity measures. Finally, we used this new similarity measure forthe data clustering problem.
Effect of Waterlogging at Different Growth Stages on the PhysiologicalTraits and Individual Yield of Mungbean

Vu Tien Binh

Received: 14-12-2018 / Accepted: 10-04-2019
A pot experiment was set up ingreenhouse conditions at the Faculty of Agronomy, Vietnam National University of Agriculture in the Spring-Summer and Summer seasonof 2018to determine the effects of waterlogging at 3 days after germination, 2-3 leaf, 5-6 leaf and flowering stages on the physiological traitsand individual yield of mungbean cv. ĐXVN5. Each growth stage of mungbean was treated as a separate experiment consisting of 2 treatments:non-waterlogging as control and waterlogging.Waterlogging treatments were maintained at 3 cm-water for one week. The results showed that the waterlogging significantlyreduced plant height, number of leaves, leaf relative water content, root length and root dry matter, chlorophyll content index (SPAD index), dry matter and individual yield of mungbean in bothseasons. Plants at 5-6 leaf stage showed better growth and recovery under waterlogging conditions. The flowering stage was adversely affected by waterlogging stress.
Replacement of Corn with Broken Rice in the Diet of Growing-Finishing Pigs

Nguyen Huu Tho, Nguyen The Tuong, Tran Xuan Manh, Ton That Son

Received: 05-03-2019 / Accepted: 12-04-2019
A study was carried out to evaluate the effect replacement of cornwith broken rice in the diet on the performance of growing-finishing pigs.Two hundred forty cross-bred D (LY) growing- finishing pigs (68 days old)were alloted intoa completely randomized design of fourtreatments with 3 replicates of 20 pigs each.Treatments consisted of graded levels of broken rice (0, 25, 50 and 75%) to orreplace cornin the diet. Results showedthatwhen using broken rice as substitutefor75% corn in the diet, the body weight, average weight gain (kg/head/day), the dressing percentage, carcasspercetage, eye muscle areaand leanmeat percetage,andmeat shear forcewere higher in comparison with25% and 50% of broken rice replacements and100% corn. The use of broken rice as substitue for corndid not affect feed intakeand feed conversion ratio (kg feed/kg body weight gain), carcass length, backfatthickness, pH45 ', pH24h, meatcolor, rate of water lossduring storageand feed cost per1 kg weight gain. It is therefore suggested thatbroken rice can replace up to75% corn in the diet of growing - finishing pigs.
Leadership Capacity of Chief Executive Officers ofSmall and Medium-sized Enterprises inHanoi

Tran Thi Thanh Huyen, Nguyen Quoc Chinh, Tran Huu Cuong

Received: 13-03-2023 / Accepted: 04-08-2023
This study aimed to evaluate leadership capacity of CEOs in small and medium-sized enterprises in Hanoi. We randomly selected 225 small and medium-sized enterprise CEOsand 225 of their subordinates, applying Cronbach's Alpha method, Exploratory Factor Analysis, Chi- Square Test, GAP matrix. The findings showed that surveyedleadership capacity of small and medium - sized enterprises reached the basic level. Meanwhile, some factors i.e.,human resources knowledge, corporate social responsibility knowledge, self-leadership knowledge, building vision and strategy skills were lacking. There should be synchronous solutions from CEOs, governments, and educational institutions in order to enhance their leadership capacity.
Current SituationandUse of Preferential Loan by Students of Vietnam National University of Agriculture

Vu Ngoc Huyen, Le Thi Thanh Hao

Received: 11-05-2018 / Accepted: 05-03-2019
In order to clarify the current situation and use of preferential loan, data were collected from 255 students and alumni at Vietnam National University of Agriculture, who had borrowed and not borrowed preferential loans from the Vietnam Social Policy Bank in the period of 2014-2016. Results showed that nearly 67% of students borrowed 4-8 times, of which 30% borrowed in 6 semesters, accounting for the highest proportion of loans. Ninety four percent of students used the loan for tuition fees, living expenses, housing, and materials. Tuition fees accounted for the highest proportion (90%) while living expenses such as lodging, and eating accounted for 44.25%. The average student loans increased but it only met 49% of the cost for education. The study also showed that the loans had a positive impact on students’ education, learning outcomes, extracurricular activities and employment. Based on theses results, three main solutions were proposed: (1) Considering loan grant to non-policy students; (2) Lending with the maximum amount according to the state regulations; (3) Continuingto raise the annual maximum loan amount.
Design and Manufacture of Model for 3-Axis CNC Mini Milling Machine

Nguyen Thi Thu Trang, Pham Thanh Cuong, Tong Ngoc Tuan, Ngo Dang Huynh, Nguyen Huu Huong

Received: 23-10-2018 / Accepted: 22-01-2019
The designand manufacture fora model of a 3-axis CNC milling machine were made based on theoretical and empirical research. The machine model is usedmainly in the training and scientific research. Using this model, it is possible to fabricate many kinds of details byusingMACH3 software on the computer for control and simulation. The technicalsoftwareis used to produce detailed design drawings and overall model of the machine,followed byfabricatingthe parts and assemblingthem into a complete machine model.
Assessment of the Occurence of Drought in Luc Ngan District, BacGiang Province Using Remote Sensing Technology

Nguyen Duc Thuan, Pham Quy Giang

Received: 19-04-2018 / Accepted: 20-11-2018
Real surface temperature and vegetationare important factors providing information on soil moisture. Surface temperature may increase quickly when land surface is waterless or plants are not supplied with enough water. In this study, the surface drought situation in Luc Ngan District, BacGiang Province was assessed by quantifying the relationship between real temperature and vegetation coverusing Temperature Vegetation Dryness Index (TVDI) derived from Landsat satellite images. The study producedthree mapsof surface temperature distribution and three maps of surface drought classification of Luc Ngan district on 24 May 1999, 3 May 2010 and 28 May 2017 asthe scientific basis for the assessment of drought situation and solutionsto minimize the damage of drought toagricultural production.
Simulation Results by Eta/ Dynaform Software for the Shapingofsome Details of Agricultural Machines Produced with Sheet Metal Forming Technology

Nguyen Thi Thu Trang, Pham Thanh Cuong, Tran Van Huu

Received: 14-09-2018 / Accepted: 06-12-2018
The present study used numerical simulation method by Eta/ Dynaform software as the basis for the analysis and evaluation of metal deformation process. This restrictsand overcomesthe errors that may occur during manufacturing, saving the time of moldingandfabrication details, saving materials,reducingthe price, and improvingthe quanlity of product after stamping. Based onsimulation problem on the deformation process of some typical partsin agricultural machines from sheet metal, optimal technologicalparameters for shapingwere proposed. On this basis, it is possible to apply virtual technology into production of equipment,machines and products in engineeringin general and agricultural engineering in particular.
Methane Emission from Paddy Field Applied with Different Organic Matter Forms from Rice Straw

Nguyen Duc Hung, Nguyen Tho Hoang, Nguyen Huu Thanh

Received: 24-04-2018 / Accepted: 04-10-2018
This study was conducted to investigate CH4 emission as influenced by different organic matter forms from rice straw applied to paddy field (Eutric Fluvisols) planted with rice culivar Khang Dan 18 in the Spring and Summer seasons of 2015 and 2016. Keeping inorganic NPK level constant (100 kg N, 80 kg P2O5 and 80 kg K2O/ha), organic matter amendments included chopped rice straw (4500 kg/ha1), biochar produced from rice straw and compost (produced from 4500 kg rice straw). The emission rates of CH4 were measured by using the closed chamber method. Results showed that CH4 emission rates differed markedly with the forms of organic matter application. Pure application of mineral fertilizers yielded lowest CH4 emission rate but highest rice grain yield. In contrast, amendment with chopped rice-straw resulted in highest CH4 emission rate and lowest rice grain yield. Biochar and compost application lowered CH4 emission rate as compared with rice straw amendment. However, application of compost maintained rice yield comparable to mineral fertilizer.
Effect of Salinity on Growth, Physiology andYield of Soybean[Glycine max(L.) Merr.]

Vu Ngoc Thang, Tran Anh Tuan, Le Thi Tuyet Cham, Vu Ngoc Lan, Pham Van Cuong

Received: 13-04-2018 / Accepted: 04-09-2018
Experiments were conducted to evaluate effects of salinity on germination, growth, physiology and yield of two soybean varieties DT84 and DT26. NaCl solution with 4 concentrations (0, 50, 100 and 150 mM) was used for treating soybean seeds in the germination experiment. In potted experiment, soybean plants were treated by adding different NaCl concentrations (0, 50 and 100 mM) to Hoagland solution from three weeks after germination to maturity stage. The results showed that the germination ratewas significantly reduced atNaCl concentration of 150 mMwith46.67%and 31.67% in DT84 and DT26,respectively.Increased salt concentration also decreasedroot and shoot length of seedlings, fresh weight of roots and shoots and high NaCl concentration (150 mM) significantlyinhibited seeding growth of both soybean varieties. In potted experiment, plant height, leaf area, dry matter, nodules, SPAD value, Fv/Fm ratio, yield and yield components decreased with increasing NaCl concentration, while the water saturation deficit and ion leakage increased. The individual yields of soybean under salinity stress at 50 and 100 mM NaCl reduced by 32.4% and 61.9% in DT84 variety and by 39.5% and 68.9% in DT26 variety, respectively. Evaluation of salinity susceptibility index (SSI) of two soybean varieties showed that DT84 variety was more salt tolerant than DT26 variety at both 50mM and100mM NaCl concentrations.
UtilizationofLiquid Fermented Forages for Growing Pigs

Tran Hiep, Nguyen Thi Tuyet Le

Received: 14-05-2018 / Accepted: 26-07-2018
An experiment was conducted to evaluate the efficiency of liquid fermented green forages in pig production. A total of 30 F1 (Y x MC) fattening pigs with body weight of 25.30-26.20 kg were randomly divided into three groups which were uniform in breed, sex, body weight and age. The control group (DC) was fed complete feed; Two expermental groups (TN1 and TN2) were fed 60% complete feed + 40% of fermented green forage in which TN1 group was fed 25% high fiber-roughage + 75% high protein roughage and TN2 was fed 50% of high fiber roughage + 50 % high protein roughage. The results showed that the feed conversion ratio was not significantly different among treatments (3.59 in DC group compared with 3.66 and 3.65 kg of feed (88% DM) per kilogram of weight gain in TN1, TN2, respectively), but, the feed cost was reduced by 29-30%. Feeding of fermented green forage diets did not significantly affect pork meat quality in all treatments. Fermented green forage increased the economic efficiency of pig production.

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