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Showing 1 - 52 of 52 Journals sorted alphabetically
Acta Agriculturae Scandinavica, Section A - Animal Sciences     Hybrid Journal   (Followers: 8)
Acta Scientiarum. Animal Sciences     Open Access   (Followers: 3)
Advances in Animal Biosciences     Full-text available via subscription   (Followers: 8)
African Journal of Livestock Extension     Full-text available via subscription   (Followers: 2)
Alces : A Journal Devoted to the Biology and Management of Moose     Open Access  
Animal Biotechnology     Hybrid Journal   (Followers: 8)
Animal Cells and Systems     Hybrid Journal   (Followers: 4)
Animal Frontiers     Hybrid Journal  
Animal Nutrition     Open Access   (Followers: 17)
Animal Production     Open Access   (Followers: 2)
Animal Production Science     Hybrid Journal   (Followers: 1)
Animal Reproduction Science     Hybrid Journal   (Followers: 6)
Animal Research International     Full-text available via subscription   (Followers: 6)
Animal Science Journal     Hybrid Journal   (Followers: 6)
Archives Animal Breeding     Open Access   (Followers: 3)
Archives of Animal Nutrition     Hybrid Journal   (Followers: 7)
Asian-Australasian Journal of Animal Sciences     Open Access  
Bangladesh Journal of Animal Science     Open Access   (Followers: 2)
Boletim de Indústria Animal     Open Access  
Bulletin of Animal Health and Production in Africa     Full-text available via subscription   (Followers: 2)
Canadian Journal of Animal Science     Hybrid Journal   (Followers: 4)
Hayvansal Üretim     Open Access  
Indian Journal of Animal Sciences     Open Access   (Followers: 6)
Indonesian Journal of Animal and Veterinary Sciences     Open Access  
International Journal of Health, Animal Science and Food Safety     Open Access   (Followers: 3)
International Journal of Livestock Production     Open Access   (Followers: 2)
Journal of Animal Breeding and Genetics     Hybrid Journal   (Followers: 4)
Journal of Animal Science     Hybrid Journal   (Followers: 13)
Journal of Animal Science and Biotechnology     Open Access   (Followers: 4)
Journal of Animal Science and Technology     Open Access   (Followers: 2)
Journal of Applied Animal Nutrition     Hybrid Journal   (Followers: 3)
Journal of Applied Animal Welfare Science     Hybrid Journal   (Followers: 14)
Journal of Applied Poultry Research     Hybrid Journal   (Followers: 4)
Journal of World's Poultry Research     Open Access   (Followers: 3)
Jurnal Agripet     Open Access   (Followers: 1)
Jurnal Ilmu Produksi dan Teknologi Hasil Peternakan     Open Access  
La Chèvre     Full-text available via subscription  
Nigerian Journal of Animal Science     Full-text available via subscription   (Followers: 1)
Nutrición Animal Tropical     Open Access   (Followers: 2)
Online Journal of Animal and Feed Research     Open Access   (Followers: 3)
Open Journal of Animal Sciences     Open Access   (Followers: 4)
Porcine Health Management     Open Access  
Poultry Science     Hybrid Journal   (Followers: 3)
Poultry Science Journal     Open Access   (Followers: 2)
Research in Agriculture, Livestock and Fisheries     Open Access  
Revista Brasileira de Saúde e Produção Animal     Open Access  
Revista de Producción Animal     Open Access  
Revista Mexicana de Ciencias Pecuarias     Open Access   (Followers: 1)
The Professional Animal Scientist     Hybrid Journal  
Tropical Animal Health and Production     Hybrid Journal  
Veeplaas     Full-text available via subscription  
World Rabbit Science     Open Access  
Journal Cover
Research in Agriculture, Livestock and Fisheries
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2409-0603 - ISSN (Online) 2409-9325
Published by Bangladesh Journals Online Homepage  [108 journals]
  • Foliar spray of gibberellic acid influences morphological attributes and
           foliage yield of coriander (Coriandrum sativum L.)

    • Authors: Dhiman Das, Asim Kumar Bhadra, Mohd Moniruzzaman
      Pages: 1 - 9
      Abstract: A field experiment was conducted at the research field of Sher-e- Bangla Agricultural University, Dhaka during the period from December 1, 2016 to January 11, 2017 to investigate the effect of gibberellic acid (GA3) on vegetative growth, morphological attributes and foliage (leaf) yield of coriander (Coriandrum sativum L.). The experimental treatments consisted of eight different doses of GA3 viz., 0 (distilled water spray), 5, 10, 15, 20, 25, 30 and 35 ppm. The variety Rosina (Pahuja Co., India) was used as planting material and different doses of GA3 were applied on the plants at 25 and 30 days after sowing. The experiment was laid out in Randomized Complete Block Design with three replications. GA3 had significant effect on vegetative growth, morphology, foliage yield and yield contributing characters of coriander. Plant height, number of leaves plant-1, leaf length, plant spread and single plant weight were found maximum from the application of GA3 at 20 ppm, which was closely followed by 25 ppm GA3. Application of GA3 at 20 ppm produced the highest weight of foliage m-2. A strong positive correlation of foliage yield was observed with plant height, number of leaves plant-1, leaf length, plant spread, single plant weight and weight of foliage m-2. Application of GA3 at 20 ppm gave maximum foliage yield (9.34 t ha-1) which was followed by GA3 at 15 ppm (8.46 t ha-1) and 25 ppm (8.06 t ha-1), and the minimum foliage yield was recorded from control (distilled water spray) (4.90 t ha-1). Application of GA3 at 20 ppm increased foliage yield over control by 47.54 %. A quadratic relationship between applied GA3 concentration and foliage yield was found; the regression equation was y = 4.87 + 0.375x – 0.009x2 from which it came up to be optimum dose of GA3 as 20.83 ppm.Res. Agric., Livest. Fish.5(1): 1-9, April 2018
      PubDate: 2018-05-03
      DOI: 10.3329/ralf.v5i1.36546
      Issue No: Vol. 5, No. 1 (2018)
  • Problems faced by the bean farmer in selected areas of Pabna district in

    • Authors: Mohammad Zamshed Alam, Md Shariful Islam, Muhammad Humayun Kabir
      Pages: 11 - 18
      Abstract: The major purposes of the study were to determine the extent of the problem faced by the farmers in bean cultivation and to explore the relationships between bean farmers’ selected characteristics with their problem faced. The study was conducted in four villages of two unions under Atghoria upazilla of Pabna District. Data were collected from a random sample of 106 bean farmers by using an interview schedule during 15 Dec, 2017 to 15 Jan, 2018. The highest proportion (71.70 percent) of the farmers faced medium overall problem in bean production, while 16.04 percent faced high and 12.26 percent faced low problem. Problem faced in non-availability of pesticides ranked 1st and this was followed by non-availability of fertilizers, lack of capital so on and least one lack of irrigation in bean cultivation ranked 28th. Correlation analysis indicated that education, training exposure, organizational participation, extension media contact and farmers’ knowledge had significant negative relationship with their problem faced. Age had significant positive relationship with their problem faced while family members, farm size, annual family income, bean cultivation area, and credit received by the farmers had no significant relationship with their problem faced. Overwhelming (87.74) majority of bean farmers faced medium to high problems therefore, it may be said that problem faced by the farmers in bean cultivation is a serious issue to be addressed to maximize bean production.Res. Agric., Livest. Fish.5(1): 11-18, April 2018
      PubDate: 2018-05-03
      DOI: 10.3329/ralf.v5i1.36547
      Issue No: Vol. 5, No. 1 (2018)
  • Farmers’ perception of beneficial effects and limitations of

    • Authors: Md Shiduzzaman, Humyra Akhter, Mohammad Bashir Ahmed, Md Matiul Islam
      Pages: 19 - 25
      Abstract: Vermicompost is very useful manure which is becoming popular day by day. However, its perception by the farmers is not yet assessed in the southwestern region of Bangladesh. The main objectives of this study were to determine the farmers’ perception of beneficial effects and limitations of vermicompost and to explore the relationship between selected characteristics of the farmers’ and their perception of beneficial effects and limitations of vermicompost. Data were collected using an interview schedule from randomly selected 60 respondents. Locale was three villages namely Lokhpur, Bollokhpur and Vobna under Fakirhat upazila of Bagerhat district. Faceto- face interview was conducted during 7 to 29 May, 2016. Farmers’ perception regarding the beneficial effects and limitations of vermicompost was measured using 5- point Likert type scale. Data were analyzed using SPSS software and farmers’ perception index was calculated. Majority (66.7 percent) of the respondents had moderate perception while 18.3 percent and 15 percent of them had less and high perception, respectively, on the beneficial effects and limitations of vermicompost. Among seven selected characteristics of the respondents, age showed a significant negative relationship with their perception of beneficial effects and limitations of vermicompost while training experience of the respondents showed a significant positive relationship with their overall perception. Thus, arrangement of training could pave the way of high perception of beneficial effects and limitations of vermicompost.Res. Agric., Livest. Fish.5(1): 19-25, April 2018
      PubDate: 2018-05-03
      DOI: 10.3329/ralf.v5i1.36548
      Issue No: Vol. 5, No. 1 (2018)
  • Use of information and communication technologies by the farmers in
           receiving agricultural information

    • Authors: Mohammad Zamshed Alam, Md Ramiz Uddin
      Pages: 27 - 32
      Abstract: The purposes of the study were to determine the extent of use of Information and Communication Technologies (ICTs) by the farmers in receiving agricultural information in Homnaupazilla under comilla district and to explore the contribution of selected characteristics of respondents with their ICTs use in receiving agricultural information. The study was conducted in two villages namely Rampur & Madhabpur of Ghagutia union in Homnaupazilla of comilla district. Data were collected from 110 farmers by using a pre-tested interview schedule during the period from 15 January to 15 March, 2015. Appropriate scales were developed to measure the variables of the study. Descriptive statistics, multiple regression (B) tests were used for analysis. The findings revealed that highest proportion (64.5%) of the respondents’ had medium use of ICTs in receiving agricultural information compared to 13.6 % and 21.8 % having low and high use of ICTs in receiving agricultural information respectively. Education, farm size, annual family income, problem confronted in ICTs use and cosmopoliteness had significant contribution to use of ICTs and provided 51.5 percent contribution to use of ICTs in receiving agricultural information. Findings helps to conclude that educated farmer having large farm size, high annual family income and cosmopoliteness who confronts less problems use more ICTs in their farming practices. All farmers should be encouraged to use ICTs therefore, the Department of Agricultural Extension should focus on personal characteristics of the farmer when motivate them to use more ICTs for getting agricultural information’s for better farming outcome.Res. Agric., Livest. Fish.5(1): 27-32, April 2018
      PubDate: 2018-05-03
      DOI: 10.3329/ralf.v5i1.36549
      Issue No: Vol. 5, No. 1 (2018)
  • Performance of some broiler strains fed varying energy levles in wet
           season of semi-arid Sokoto, Nigeria

    • Authors: Sa’adu Aliyu, Yahaya A Bashar, Aminu Abubakar, Aminu U Abdullahi, Mohammed Ibrahim Ribah, Sani Garba, AY Abbas, AI Mani
      Pages: 33 - 42
      Abstract: Three commercial broiler strains (Arbor-acre, Marshall and Hubbard) were placed under three dietary energy and crude protein levels of 2900 Kcal/kg (ME) - 22% CP, 3100 Kcal/kg (ME) - 23% CP, and 3300 Kcal/kg (ME) - 24% CP as low, medium and high energy levels at starter phase, respectively. At the finisher phase, the birds were fed 2800 Kcal/kg (ME) - 19% CP, 3000 Kcal/kg(ME) - 20% CP and 3200 Kcal/kg (ME) - 21% CP, in order to determine their productive performance in wet season of semi-arid. A total of 675 birds were used in a completely randomized design (CRD) comprising 225 birds each of each strain serving as treatments. Each group was replicated five times so that each replicate had 15 birds. Each strain group was fed three dietary energy levels at both starter and finisher phases for 56 days. Feed and water intakes, mortality, weight gain, feed conversion ratio, Cost/kg gain was determined at the end of the trial. Data recorded for each phase were subjected to Analysis of variance (ANOVA) and least significant difference (LSD) was used to compare the means. Results indicated that Hubbard strain had significantly (P<0.05) lowest cost/kg gain, mortality, feed conversion ratio, feed intake and higher weight gain than other strains. Low energy diet had significant higher (P<0.05) weight gain and lower cost/kg gain than both medium and high energy diets. The study concluded that; Hubbard strain fed low energy diet should be raised in wet season of semi-arid Sokoto due to its lower cost/kg gain, mortality, better feed conversion ratio and higher average daily gain compared to other strains.Res. Agric., Livest. Fish.5(1): 33-42, April 2018
      PubDate: 2018-05-03
      DOI: 10.3329/ralf.v5i1.36550
      Issue No: Vol. 5, No. 1 (2018)
  • Retrospective study of foot and mouth disease in cattle at Babugonj
           upazila of Barisal district

    • Authors: Sharmin Mostary, Khalid Hussain, Imam Hasan, Farzana Islam Rume
      Pages: 43 - 48
      Abstract: The present study was conducted in Babuganj Upazila Veterinary Hospital, Barisal during the period from September 2015 to August 2017 to observe the prevalence of Foot and Mouth Disease (FMD). A total of 727 animals were examined during this period and 158 cases were found positive to FMD, so the proportionate prevalence of FMD was 21.73% (n=158) at Babugonj Upazila. The effect of age, sex, breed and season on the prevalence of the disease was discussed. The proportinate prevalence of FMD was highest in the month of December and January. The males (432 males, 109 affected, prevalence 25.23%) were more susceptible than females (295 female, 49 affected, prevalence 16.61%). The Older cattle (more than 4 years old) were more susceptible to FMD (29.88%) compared to adult (2 to 4 years; 19.53%) and younger (less than 2 years old; 8.62%). Moreover, FMD is more frequent among indigenous breeds (27.90%) than crossed breeds (13.91%). The findings from this study can be used as baseline epidemiological data for further research to understand the epidemiology of FMD in Barisal.Res. Agric., Livest. Fish.5(1): 43-48, April 2018
      PubDate: 2018-05-03
      DOI: 10.3329/ralf.v5i1.36551
      Issue No: Vol. 5, No. 1 (2018)
  • Evaluation of different parameters in relation to repeat breeding of cows
           at the Coastal areas of Bangladesh

    • Authors: Bidyut Matubber, Ashit Kumar Paul, Sushanta Das
      Pages: 49 - 55
      Abstract: The aim of this study was to evaluate the presumptive factors might be responsible for repeat breeding syndrome of cows in Bangladesh. The study was conducted in different villages around the Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Outer campus, Barisal during the period from July to September 2017. A total of 100 repeat breeder cows were evaluated considering different presumptive influencing factors such as breed, age, parity, body condition score (BCS), fetal death, retention of placenta, post-partum endometritis, abortion, dystocia and managemental practices of cows. It was found that there was no significance (p>0.05) effect of parity and age of cows on the occurrence of repeat breeding syndrome in local and crossbred cows. Repeat breeding syndrome was significantly higher in BCS 2.0 to 2.5 in local breed and 3.0 to 3.5 in crossbred cows than that of other groups. In the study animals, dystocia was 4.0%, fetal death was 58.2%, retention of placenta was 57.1%, post-partum endometritis was 4.1% in crossbred cows. Cows in semi-intensive system raring had significantly (P<0.05) higher (53.1%) of repeat breeding than that of others systems. Animals that were not dewormed (73.5%) and vaccinated (92.9%) had 73.5 % and 92.9% repeat breeding syndrome affected cows, respectively. It may concluded that simultaneously multiple factors such as irregular deworming and vaccination, subclinical endometritis, hormonal imbalance, early embryonic death due to low progesterone level, failure of proper heat detection and so on, might be also responsible to the occurrence of repeat breeding syndrome in cows.Res. Agric., Livest. Fish.5(1): 49-55, April 2018
      PubDate: 2018-05-03
      DOI: 10.3329/ralf.v5i1.36552
      Issue No: Vol. 5, No. 1 (2018)
  • Retrospective study of myiasis in ruminants at Babuganj Upazilla
           Veterinary Hospital of Barisal district

    • Authors: Most Tahmina Khan, Md Tahmid Rahman Pavel, Imam Hasan, Md Monowarul Islam, Md Muket Mahmud, Saifa Nasar Trisha, Milton Talukder
      Pages: 57 - 64
      Abstract: The study was conducted to know the occurrence of myiasis in cattle and goats at Babuganj Upazilla Veterinary Hospital, Barisal, Bangladesh. A total of 160 animals were examined. Among them 46 animals were found to be myiasis infested. A structured questionnaire was used to collect data on species, breed, age, sex, body condition of the animal, onset and duration of illness, affected sites of myiasis. The study was conducted during March 2014 to May 2015. All the data that were collected were entered into MS excel. Descriptive analysis was done by column and pie charts. It was possible to follow the response of treatment using two treatment protocols. The overall occurrence of myiasis was 28.75% where 39.13% in cattle and 60.87% in goat. The occurrence was higher in cross breed cattle (55.56%) than the local (44.44%). Similarly the occurrence rate was higher in cross breed goat (42.86%) than local breed (28.57%). Less than 6 months aged animals (71.73%) and females (cattle-61.11% and goat-64.29%) were more prone to myiasis. The frequency of maggot infestation was higher in navel region (54.35%) followed by vaginal (28.26%) and rectal (10.87%) regions respectively. The percentage of recovery to Inj. SP vet, Inj. Asta vet and Inj. Vermic were 67.86%. Myiasis is the major problem in livestock production in our country. Animals at high risk should be managed properly to avoid wound and special attention on wound management should be given after castration and parturition to prevent myiasis.Res. Agric., Livest. Fish.5(1): 57-64, April 2018
      PubDate: 2018-05-03
      DOI: 10.3329/ralf.v5i1.36553
      Issue No: Vol. 5, No. 1 (2018)
  • An economic study on production and marketing of ducks in haor areas of
           Netrokona district

    • Authors: Mahmuda Zannat, Sajia Sharmin, Riffat Ara Zannat Tama, Md Akteruzzaman
      Pages: 65 - 74
      Abstract: Livestock subsector of poultry in Bangladesh is playing important role to its economy in light of growing small business, sources of protein supply, and providing a livelihood for millions of people. The study was designed to investigate the profitability of duck producing farms and marketing system of duck enterprise in haor areas of Netrokona district. In total, 50 farmers were selected. Farmers were divided into three categories (small, medium, large). The study shows that the average gross return from duck amounted to Tk. 47023 for small farms, medium farms gross return was Tk. 57580.82 and for large farms it was Tk. 57013.83. All farms average gross return was Tk. 53872.55. Annual net return for small farms from duck amounted to Tk. 19603, for the medium farm it was Tk. 23275 and Tk. 24275.16 for the large farms. Undiscounted BCR for small, medium and large farmers were 1.71, 1.68 and 1.74 respectively. The study also shows that, the marketing costs of paikers, wholesalers and retailers were Tk. 1920, Tk. 3019.41 and Tk. 2859.4 respectively. The corresponding net marketing margins were estimated at Tk. 833.33, Tk. 1173.66 and Tk. 938.6 per 100 ducks. This study identified some of the problems and constraints associated with production and marketing of duck which were- scarcity of feed, higher price of feed, higher transportation cost, lack of capital, lower price of ducks. Based on findings, recommendations were made for the improvement of this prominent duck farming sector.Res. Agric., Livest. Fish.5(1): 65-74, April 2018
      PubDate: 2018-05-03
      DOI: 10.3329/ralf.v5i1.36554
      Issue No: Vol. 5, No. 1 (2018)
  • Effects of Sodium Bicarbonate on milk preservation

    • Authors: Mohammad Mizanur Rahman, Md Nurul Islam, Md Harun ur Rashid, AKM Masum
      Pages: 75 - 85
      Abstract: The present investigation was carried out to assess the effect of sodium bicarbonate (NaHCO3) on the keeping quality of raw cow milk. Milk samples were collected from Bangladesh Agricultural University (BAU) Dairy Farm and initial quality were evaluated using physical and chemical tests at Dairy Technology Laboratory of the Department of Dairy Science, BAU. Then, collected samples were preserved at room temperature (28- 30°C) with 0.0 (control), 0.3, 0.4 and 0.5 per cent NaCHO3. The quality of milk samples were measured at every two hours interval up to 6 hours, one hour interval upto 16 hours and thereafter every half an hour interval until spoilage. Initially, colour, flavour and texture of all milk samples were normal (100%), but with progressive storage time colour, flavour and texture of all samples deteriorated gradually, which was more rapid for control samples than that of the NaHCO3 treated samples. Acidity per cent of all samples increased gradually during storage period and the differences in acidity of milk samples in different treatments were significant (p<0.01). Control samples spoiled after 11¼th hours but that of 0.3, 0.4 and 0.5 percent NaHCO3 treated samples spoiled after 16¾th, 17¾th and 18¾th hours,, respectively. It may be concluded that NaHCO3 is the effective chemical neutralizing the acids produced by acid producing bacteria and can be used as a short term preservation of milk under rural condition of Bangladesh where scientific cooling or pasteurization facilities are not available.Res. Agric., Livest. Fish.5(1): 75-85, April 2018
      PubDate: 2018-05-03
      DOI: 10.3329/ralf.v5i1.36555
      Issue No: Vol. 5, No. 1 (2018)
  • Anthelmintic resistance to cattle gastrointestinal nematodes in selected
           dairy farms of Mymensingh and Sirajganj districts of Bangladesh

    • Authors: TM Mahibur Rahman, Anita Rani Dey, Saiful Islam, Md Shahadat Hossain, Md Hasanuzzaman Talukder, Mohammad Zahangir Alam
      Pages: 87 - 92
      Abstract: Correction: Table 1 and Table 2 have were omitted from the PDF in error. They were added to page 89 on 17th May 2018.Anthelmintic resistance (AR) to commonly used dewormers is one of the major world-wide constrain in livestock production. The present study was investigated the status of AR in BAU dairy farm, Mymensingh and Talukder dairy farm, Sirajganj. Faecal egg count reduction test (FECRT) was applied to assess AR in cattle of two dairy farms during January to June 2017. The anthelmintics tested were Albendazole (ABZ), a benzimidazole anthelmintic (Almex®, Square Ltd.) and Ivermectin (IVM) (Vermic®, Techno drugs Ltd.), administered at the doses recommended by the manufacturers. In each farm, cattle were divided into treatment and control (not treated) group based on faecal egg counts (FEC), that is at least 200 eggs/g. At 14 days after treatment, faecal samples were collected for post-treatment FEC, which is compared between treatment and control group. Resistance was defined if there was <95% reduction, with lower 95% confidence limit (CL) <90% in the FEC. AR was present in both the dairy farms involved in this study. The FECRT using ABZ revealed 79.7% (95% CL 87.9, 65.8) reduction and 95.8% (95% CL 98.7, 87.1) reduction of FEC in BAU and Talukder dairy farms, respectively. Also, FECRT using IVM revealed 77.9% (95% CL 97.7, 85.5) and 94.2% (95% CL 97.7, 85.5) reduction of FEC in BAU and Talukder dairy farms, respectively. Our study suggest that AR is present in both selected dairy farms and further extensive studies are required to determine the extent of AR in different cattle farms of Bangladesh.Res. Agric., Livest. Fish.5(1): 87-92, April 2018
      PubDate: 2018-05-03
      DOI: 10.3329/ralf.v5i1.36556
      Issue No: Vol. 5, No. 1 (2018)
  • Aquaponic production of Tilapia (Oreochromis niloticus) and water spinach
           (Ipomoea aquatica) in Bangladesh

    • Authors: Bably Akter, Subhas Chandra Chakraborty, Md Abdus Salam
      Pages: 93 - 106
      Abstract: The experiment was conducted to assess the water spinach production in aquaponic system using two different media for a period of 90 days. Only brick lets was used as media in treatment T1, whereas in treatment T2 media had mixture of brick lets and used tea leaves. Six 20 liter plastic containers and a 750 L water tank were used for vegetable bed and fish rearing respectively. Fish and water spinach were sampled fortnightly. The highest average plant height, weight and number of leaves recorded in T1 were 35.96 ± 4.75 cm, 59.09 + 23.85 g and 93.90 + 38.52, respectively. Total production of water spinach in T1 and T2 was 1.26 and 0.98 kg, respectively. At the end of the experiment, % length and weight gain was 33.81 and 174.06, the survival rate and FCR was found to be 98.33% and 1.56, respectively. The total production of fish was 29.44 tons/ha/90 days. The system produced higher amount of fish as well as vegetable with minimum water use having no environmental pollution. The system efficiently utilized fish waste in plant production through a symbiotic relationship between the fish and plants. Therefore, the system could be installed in high density city areas to produce fish and vegetable from the rooftop and backyard to address the environmental problems.Res. Agric., Livest. Fish.5(1): 93-106, April 2018
      PubDate: 2018-05-03
      DOI: 10.3329/ralf.v5i1.36557
      Issue No: Vol. 5, No. 1 (2018)
  • Effect of salt concentration on the rehydration capacity of sundried
           ribbon fish (Trichiurus haumela) stored at ambient (28-330c) and
           refrigeration (40c) temperature

    • Authors: Mst Prianka Jahan, Subhash Chandra Chakraborty
      Pages: 107 - 115
      Abstract: A study was done to investigate the changes in water rehydration capacity of laboratory prepared control dried (dried fish treated without salt), 15% salt dried and 25% salt dried ribbon fish (Trichiurus haumela) stored in polyethene bag at ambient (28-330C) and refrigeration temperature (40C). The main objective of this study was to observe the effect of salt on the rehydration capacity of the dried ribbon fish during 2 months storage period. On the 1st day of storage the reconstitution level of control dried, 15% salt and 25% salt dried fish at 280, 400 and 600C was in the range of 30.05 to 70.98% having maximum value for control dried fish after 60 minute of soaking at 600C and minimum value for 25% salt dried fish after 15 minute of soaking at 280C. The reconstitution capacity of the dried fish products gradually increased with increasing soaking time and temperature. After 60 days of storage the rehydration capacity of dried products at same temperatures of 280, 400 and 600C ranged between 27.16 to 61.43% with highest value for control dried products stored at refrigeration temperature (40C) after soaking for 60 minutes at 600C and lowest value for 25% salt dried fish stored at ambient temperature (28-330C) after soaking for 15 minutes at 280C. Rehydration capacity of the dried products decreased very slowly during storage period due to the slow increment of moisture in the products stored both at ambient and refrigeration temperature. Salt-dried fish absorbed less moisture than that of unsalted dried fish and increased salt concentration resulted in the lower moisture absorption in the dried fish and thus reduced rehydration capacity.Res. Agric., Livest. Fish.5(1): 107-115, April 2018
      PubDate: 2018-05-03
      DOI: 10.3329/ralf.v5i1.36558
      Issue No: Vol. 5, No. 1 (2018)
  • Study on heavy metal content of Oreochromis niloticus, Heteropneustes
           fossilis and Pangasius sutchi collected from pond and open water

    • Authors: - Kamruzzaman, Md Abdullah Al Mahamud, Abdul Alim, Md Shahadat Hossen, Md Ariful Islam, Md Abul Mansur
      Pages: 117 - 126
      Abstract: Present studies were conducted on the study of heavy metal content of three popular freshwater fish, tilapia Oreochromis niloticus, shing, Heteropneustes fossilis and pangus, Pangasius sutchi collected from pond and open water in Mymensingh. All samples were evaluated by studying unwanted heavy metal concentrations. Cadmium (Cd) concentration (μg/g) of pond water O. niloticus, H. fossilis and P. sutchi was found to be 0.21±0.02, 0.20±0.01 and 0.22±0.02 respectively and open water was 0.28±0.03, 0.25±0.02 and 0.29±0.03, respectively. Copper (Cu) concentration (μg/g) of pond water O. niloticus, H. fossilis and P. sutchi was 0.25±0.02, 0.29±0.03 and 0.21±0.02 respectively whereas open water had 0.28±0.01, 0.59±0.04 and 0.35±0.01 respectively. Lead (Pb) concentration (μg/g) of pond water O. niloticus and H. fossilis contained 0.07±0.01 and 0.08±0.01, respectively whereas the open water had 0.15±0.02 and 0.15±0.01, respectively. Pb concentration both in pond and in open water P. sutchi was nil. Pb concentration of O. niloticus was higher in open water fishes (0.15±0.02 μg/g) than the fishes of pond water (0.07±0.01 μg/g). Heavy metal concentration of O. niloticus, H. fossilis and P. sutchi was within permissible limits except Cd of open water fishes. The result revealed that open water fishes have higher concentration of heavy metals in their muscle than the fishes of pond water. The results indicate that the open water environment is polluted by various chemical composition as well as various toxic heavy metal pollutants.Res. Agric., Livest. Fish.5(1): 117-126, April 2018
      PubDate: 2018-05-03
      DOI: 10.3329/ralf.v5i1.36560
      Issue No: Vol. 5, No. 1 (2018)
  • Use of indigenous beneficial bacteria (Lactobacillus spp.) as probiotics
           in shrimp (Penaeus monodon) aquaculture

    • Authors: Fatema Ahmmed, Mirja Kaizer Ahmmed, Md Saifuddin Shah, Ghausiatur Reza Banu
      Pages: 127 - 135
      Abstract: The present study was conducted to study in-vitro the antagonistic effect of Lactobacillus spp. against the pathogenic bacterial vibrio harveyi on shrimp. For this purpose, shrimp samples were collected from three different Ghers at Batiaghata upazilla, Khulna. Gills and intestines were taken out from the samples to identify the load of Lactobacillus spp. and Vibrio spp. The results revealed that the load of Lactobacillus spp. was found more than Vibrio spp. both in gills and intestines; the gills also contained higher load of Vibrio spp. than in the intestines. V. harveyi was separated from the isolated Vibrio spp. with different types of biochemical tests: Gram stain, Motility test, Indole test, VP test, MR test, Arginine dihydrolase, Salt tolerance test, growth at different temperature ranges and colony color on TCBS agar media. The isolated V. harveyi was subjected for in-vitro test. In in-vitro challenge test, the potential antagonistic effect of Lactobacillus spp. against V. harveyi was gradually obtained at 0, 4th, 8th, 12th hour of treatments. Interesting finding was that, with the time, the load of V. harveyi was reduced gradually and the lowest load was obtained after 12 hours of probiotic inoculation. The present study revealed an excellent in-vitro antagonistic probiotic effect of Lactobacillus spp. on V. harveyi. Therefore the result suggested that probiotic treatment might be an effective alternative to the use of antibiotics in treatments of bacterial diseases in shrimp aquaculture.Res. Agric., Livest. Fish.5(1): 127-135, April 2018
      PubDate: 2018-05-03
      DOI: 10.3329/ralf.v5i1.36561
      Issue No: Vol. 5, No. 1 (2018)
  • Development of anti-Aeromonas hydrophila serum from Rabbits

    • Authors: SM Rakib, Md Nazmul Hossen, Md Ashikur Rahman, Sonia Sku, Shirin Akter, M Mamnur Rashid
      Pages: 137 - 145
      Abstract: An experiment was conducted to prepare anti-Aeromonas hydrophila serum in two rabbits (Oryctolagus cuniculus). Formalin killed cell (FKC) and heat killed cell (HKC) were prepared by adding 0.5% formalin and 2.5 h heat treatment at 60°C of freshly cultured Aeromonas hydrophila (AQC810) isolated from naturally infected koi fish kidney respectively. Slide agglutination tests were performed for the determination of the presence of specific antibody against Aeromonas hydrophila in the serum collected from the blood of pre-immune rabbits or post immune rabbits. No agglutination of pre-immune serum with the homologous antigen proved that the rabbits had no previous Aeromonas contamination. Rabbits were injected subcutaneously with the FKC added with same amount of Freund’s complete adjuvant. Three booster doses were given without the adjuvant at weekly intervals after second week of first injection. Agglutination titration of anti-Aeromonas hydrophila rabbit serum against HKC and FKC of homologous bacteria showed that the titers increased with the post inoculation days which rose at their peak during the fifth week of immunization and after three consecutive booster doses at weekly intervals starting from second week of first immunization. Rabbits were sacrificed after six weeks of immunization, whole blood, collected and centrifuged to accumulate the serum that were complementinactivated by heating to 58ºC for 30 min and stored at -20°C in appendorph tubes, with the aim of rapid diagnosis of Aeromonas infections in fishes. Result of this study would initiate the way of vaccine development against MAS (motile Aeromonas septicemia) in the aquaculture fishes of Bangladesh.Res. Agric., Livest. Fish.5(1): 137-145, April 2018
      PubDate: 2018-05-03
      DOI: 10.3329/ralf.v5i1.36562
      Issue No: Vol. 5, No. 1 (2018)
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