A potential endemic cyprinid for aquaculture and food security: The embryonic development of the Bornean spotted barb Puntius sealei (Herre, 1933)

The Bornean Spotted Barb is endemic fish species and widely distributed throughout Borneo in various freshwater bodies and can be considered as a potential aquaculture candidate for food security and the ornamental trade. However there has yet to be scientific studies on the early life history and developmental stages of this species. Thus the present study reveals the embryonic development of Puntius sealei embryo, from fertilization to post-hatching using the induced breeding method. The induced spawning on P. sealei using Ovaprim hormone at a dose of 0.5 ml/kg for females and 0.25ml/kg for males respectively was successfully conducted and the embryonic development of the fertilized eggs were observed. The zygote, cleavage, blastula, gastrula, segmentation, and larval phases were the six major stages of embryogenesis that investigated in this experiment. This study contributed major knowledge to the early developmental biology of this particular species. The information will be useful for accessing the potentiality of this species for aquaculture as well as the management, and production of the species. Asian Australas. J. Food Saf. Secur. 2021, 5 (2), 55-62

Analysis of organochlorine DDT residue along with its metabolites in dry fishes from some selected markets of Dhaka city

A study was investigated to estimate the current status of health hazardous organochlorine insecticide DDT and its metabolites DDE and DDD in different species of dry fish. To achieve the goal of this experiment, ten different sun-dried fish samples were collected from different markets of Dhaka city. The concentration of DDT, DDE and DDD was determined using the capillary column coupled to Gas Chromatograph with Electron Captured Detector (GC-ECD). Most of the dry fishes, seven out of ten samples, were found to be contaminated with DDT along with its metabolites DDE and DDD ranging from 0.029-1.22 mg/kg which is a serious concern because of the nature of long persistency and bioaccumulation of DDT in the environment. The highest concentration of DDT (1.22 mg/kg) was observed in Pampus chinensis dry fish whereas low concentration was detected in Otolithoides pama (0.029 mg/kg). Asian Australas. J. Food Saf. Secur. 2021, 5 (2), 79-84

Judicious and non-judicious use of colistin sulfate in indoor poultry experimentation and its effect on haematological parameters and body weight in broiler

The aim of this study was to evaluate the effects of discriminate and indiscriminate use of colistin sulfate on body weight and haematological parameters in broiler. Day-old-broiler chicks were collected and reared for up to 31 days. The chicks were randomly divided into control, discriminate and indiscriminate antibiotic group. The discriminate group was treated with colistin sulfate antibiotic (Eskolis-24) for one week (from 16th to 22th day) followed by one week withdrawal period. In case of indiscriminate group, the poultry were treated with colistin sulfate antibiotic for 14 days (from 16th to 29th day) without any withdrawal period until sacrifice. The body weight of the birds were recorded daily. The mean body weight was highest in indiscriminate group (1408.22±133.49 gm) followed by discriminate group (1330.15±134.93 gm) and control group (1243.81±173.19 gm). The differences among means of three groups were not statistically significant. The Total erythrocyte count (Million/mm3) of control, discriminate, and indiscriminate groups were 2.53± 0.05, 2.56±0.08, and 2.52±0.08 respectively. The hemoglobin (gm%) were 7.06± 0.09, 7.03± 0.12, and 7.11±0.09 respectively and the Packed Cell Volume (%) were 19.66±1.11, 19.33±0.95, and 20.16±0.70 respectively. The results found were not statistically significant among the groups for TEC, Hb and PCV respectively. Total lymphocyte (%) count were 67.16±0.60, 70±1.15, and 71.83±1.30 respectively. Total neutrophil (%) count were 32.83± 0.60, 28.83±1.42, and 26.83±1.10 respectively. Total eosinophil (%) count were 0± 0, 1±0.44, and 1.16±0.40 respectively. Total basophil (%) count were zero (0) and total monocyte (%) count were 0± 0, 0.17±0.17, and 0.17±0.17 respectively. In our experiment, both discriminate and indiscriminate groups showed no significant differences of lymphocyte, neutrophil, eosinophil, basophil and monocyte. Therefore, discriminate and indiscriminate use of colistin sulfate for two weeks has no effect on haematological parameters of broiler poultry. Further experiment needed for more concise conclusion. Asian Australas. J. Food Saf. Secur. 2021, 5 (2), 43-54

Proximate analysis and formulation of weaning food using germinated cereals, pulses and ground nut

A combination of nutritionally inferior diets and improper feeding practices are major contributing factors to the development of childhood malnutrition. Complementary feeding improvement should be of highest priority for nutrition of infant and young children containing all essential nutrients at required amount. The objective of this study was designed to investigate the inclusion of weaning food formulation and evaluating compositional and functional properties of the products. The analysis undertaken in this study was infant food formulation, proximate composition, mineral concentration and sensory properties. The moisture content in this study ranged from 1.49 ± 0.12 to 3.89 ±0.12, crude protein from 15.09 ± 0.05 to 16.79± 0.01, crude fat from 11.11 ± 0.07 to 12.80 ± 0.00, total ash from 2.06 ± 0.03 to 2.21 ± 0.00, carbohydrate from 65.9740 ± 0.24 to 68.2641 ± 0.14 and energy value ranged from 431.68 ± 0.05 to 449.18 ± 0.57. From the result provided, sample-A contained the highest protein, moisture, fat content than sample-B. But carbohydrate and energy are highest in sample-B than sample-A. The two macro minerals mg/100 g of Ca and Zn in the study were ranged from lower 0.60±0.07 to 0.79±0.01 and 1.05±0.01 to 2.44±0.06 respectively. Beta-carotene is varied from 0.90±o.01 to 1.17±0.00. Sensory parameters such as colour, appearance, texture, taste, aroma and overall acceptability is high in sample-A than to sample-B. Finally, from the general trend observed in this study that both the weaning foods prepared from cereal, legume, pulse flour provided better nutritional and functional compositions to meet nutrient dense of infant foods. Asian Australas. J. Food Saf. Secur. 2021, 5 (2), 32-42

Heavy metal contamination and antibiotic residues in poultry feed and meat in Bangladesh

Presence of harmful contaminants and residues in poultry feed and meat have serious public health consequence. This study was carried out to identify and quantify antibiotic residues, heavy metals and toxins in poultry feed and meat in the two selected poultry production belts of Bangladesh. A total of 94 broiler feed samples and 60 broiler meat samples were collected and tested by Thin Layer Chromatography (TLC), High Performance Liquid Chromatography (HPLC) and Enzyme-linked Immunosorbent Assay (ELISA) for identification and quantification of the parameters. Antibiotic residues were detected in 18.89% of the feed samples, whereas, there were no toxin (Aflatoxin) positive samples. Among the antibiotic positive samples, Oxytetracycline (OTC) was found predominant and detected in 12.22% cases. The mean concentrations of Cadmium (Cd), Lead (Pb), Chromium (Cr) were found as 0.04 mg/kg, 1.28 mg/kg and 2.55 mg/kg respectively in feed samples. In the case of meat samples, the mean concentration of OTC, Ciprofloxacin (CIP), and Tetracycline (TCL) residues were found 8.67 ppb, 7.18 ppb and 0.81 ppb accordingly. The highest mean concentration of Oxytetracycline (OTC) (10.15 ppb) was found in samples collected from local poultry sellers, whereas, the highest mean concentration of Tetracycline (TCL) (1.35 ppb) and Ciprofloxacin (CIP) (10.62 ppb) were observed in the samples obtained from local farm. The highest percentage of TCL and CIP (64% and 48% respectively) were found in samples collected from local farm. Chlortetracycline (CTC) was found predominant (70%) in samples collected from Contract farms. On the other hand, out of 60 meat samples, Cd and Cr were detected in only one meat sample with concentration of 56.41 mg/kg and 14.44 mg/kg respectively. Lead was not detected in any of the meat samples. Asian Australas. J. Food Saf. Secur. 2021, 5 (2), 71-78

Monitoring of pesticide residues in vegetables collected from retail markets of Dhaka district of Bangladesh using QuEChERS Extraction and Gas Chromatography

The present study was aimed to detect and quantify major organophosphorus pesticide residues in cauliflower and cucumber collected from different retail markets of Dhaka city, Bangladesh. In this study, a total of 50 vegetable samples (30 samples of cauliflower and 20 samples of cucumber) were analyzed using Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) extraction technique and Gas Chromatography coupled with Flame Thermionic Detector (GC-FTD). Among the 30 analyzed samples of cauliflower, 5 samples (16.7% of the total number of samples) contained residues of chlorpyrifos, quinalphos, acephate and dimethoate, where 4 samples contained multiple pesticide residues. All the contaminated samples of cauliflower contained residues above the EU-MRL. On the other hand, among the 20 analyzed samples of cucumber, only 2 samples (10% of the total number of samples) contained residues of quinalphos and chlorpyrifos at a level being below the EU-MRL. This study reflects the overall scenario of pesticide residues remain in cauliflower and cucumber purchased from different local markets of Dhaka city, which will help the consumer to be aware of their health and safety. The findings derived from this study reveals the public health concern due to the potential of pesticide toxicity in vegetables for the consumers. Therefore, continuous monitoring on the use of pesticides in vegetables should be strengthened. Asian Australas. J. Food Saf. Secur. 2021, 5 (2), 63-70

Antibiotic resistance and residue in chicken, cattle, buffalo and goat meats in different southern districts of Bangladesh

The presence of antibiotic residue in chicken and animal meats is a serious threat to human health due to its harmful effects. This study aimed at identifying the antibiotic resistance patterns of the isolates as well as antibiotic residues in chicken, cattle, buffalo and goat meats in different southern districts of Bangladesh. A total of 205 meat samples, including 70 chicken meat, 60 cattle meat, 50 buffalo meat and 25 goat meat were aseptically collected and analysed for the detection of antibiotic residues by thin layer chromatography and the isolates obtained from these samples were subjected to antibiogram study against 16 commonly used antibiotics. The isolates found in this study were Staphylococcus spp., Streptococcus spp., Escherichia coli, and Salmonella spp. and their prevalence were 37.5% (77/205), 22.1% (48/205), 29.7% (61/205), 8.7% (19/205), respectively. The isolates showed different degrees of sensitivity to the antibiotics used in the study. The most resistant phenotype was against cefradine, amoxicillin, penicillin, oxytetracycline, erythromycin, and enrofloxacin. 18.5% (38/205) meat samples were found to be positive for antibiotic residues and the highest prevalence was observed in chicken meat compared to other meat types. Overall, the findings of the study suggest that it is important to take controlling measures for the emergence of antibiotic resistance and also for ensuring healthy meats for human consumption. Asian Australas. J. Food Saf. Secur. 2021, 5 (1), 19-26

Adequacy, utilization and repayment of society for social service credit on poor women of Mymensingh district in Bangladesh

The present study was an attempt to assess adequacy, utilization and repayment of Society for Social Service (SSS) credit on women beneficiaries. Interviewing 90 respondents randomly selected from five villages of Gouripur upazila of Mymensingh district in Bangladesh. The study revealed that both annual income and expenditure of the respondent households have increased after joining the micro credit program of SSS. Average annual income of agriculture and petty business enterprises are Tk. 80726.57 and 74864.14 respectively while average annual expenditure of agriculture and petty business enterprises are Tk. 78776.65 and 67912.37 respectively. Overall annual savings of agriculture and petty business enterprises are Tk. 3733.25 and 8475.09 respectively. Moreover, the women are better at present in respect of social awareness, freedom of attitude, financial freedom and also exercising their right in decision making activities. The study identified some crucial problems such as lack of adequate credit, high rate of interest, burden of old debt, lack of storage and marketing facilities, lack of improved seeds/breed and low price of their products, etc. The findings suggest that the amount of credit should be provided in accordance with their requirement, reduced interest rate and arranging for reasonable price of their products. Finally it was concluded that the SSS credit program benefited the women beneficiaries in respect of increasing income, creating self-employment opportunity, improving social status and at least in reducing the poverty from the study area. Asian Australas. J. Food Saf. Secur. 2021, 5 (1), 1-10

Organophosphorus pesticide residues detected in eggplant and tomato samples collected from different regions of Bangladesh

The study was conducted to detect and quantify the residue of seven commonly used organophosphorus pesticides (acephate, chlorpyrifos, quinalphos, diazinon, malathion, dimethoate and fenitrothion) in eggplant and tomato samples collected from local market of commercially grown four different regions viz. Bogura, Narsingdi, Jeshore and Cumilla for the comparison between the detected residue level with maximum residue limit (MRL) set by European Union. A total of 80 analyzed samples of eggplant and tomato, 21.25% of the total number of samples contaminated with acephate, chlorpyrifos, fenitrothion and diazinon residues which were above the EU-MRLs. Out of 40 analyzed samples of eggplant, 11 samples were contaminated with acephate, diazinon fenitrothion and chlorpyrifos residues. All of the contaminated samples (27.5% of the total number of samples) had chlorpyrifos (0.02-0.046), acephate (0.017-0-0.39), diazinon (0.11-0.47) and fenitrothion (0.20) residues which were above the EU-MRLs. The eggplant samples collected from Jeshore and Narsingdi received more pesticides than Cumilla and Bogura regions. In case of 40 analyzed samples of tomato, 6 samples (15% of the total number of samples) had chlorpyrifos (0.27-0.43), diazinon (0.25) and fenitrothion (0.10) residues which were above EU-MRLs. Malathion, quinalphos and dimethoate residues were not found in any of the tested samples which might be applied at recommended doses. Asian Australas. J. Food Saf. Secur. 2021, 5 (1), 27-31

Thin layer chromatographic detection of enrofloxacin antibiotic residues in poultry tissues

Antibiotic residues remain in edible portion of meat animals that have been treated with antibiotics. The aim of this study was to detect enrofloxacin residue after discriminate and indiscriminate administration and investigate the effect of enrofloxacin in growth of poultry. 18 broilers DOC (Cobb-500) were collected & reared up to 31 days. On day 16, they were randomly divided into 3 groups, namely Group–A (Control group), Group-B (Discriminate group) and Group-C (Indiscriminate group). Each group contains 6 birds. The discriminate and indiscriminate groups were treated with antibiotic, enrofloxacin. In Group-B withdrawal period was followed and treatment was stopped before 7 days of sacrifice. On the other hand, withdrawal period was not maintained in indiscriminate group and antibiotic treatment was continued until the day of sacrifice. Body weight was recorded daily in the morning. On 31st day mean body weight was highest in Group-C (1901.17 ± 15.22gm) and lowest body weight was in Group-A (1453.33 ± 26.39gm). The differences among mean weight gain were statistically significant (P<0.005) in both discriminate & indiscriminate group compared to control group. Test results found in TLC showed that in discriminate antibiotic group (Group-B) 50% liver samples, 33.33% kidney and 16.67% fat samples were enrofloxacin positive. No sample of thigh muscle, breast muscle and spleen was positive. In indiscriminate antibiotic group (group-C) all the samples were positive in case of liver, kidney, fat and spleen samples. Only 33.33% and 16.67 % samples were positive in case of fat and thigh muscle samples. All the samples of control group (Group-A) were negative. Overall, the present study documented the widespread abuse of enrofloxacin and failure to implement the recommended withdrawal period will undeniably leads to deposition of residues in broiler tissues. Asian Australas. J. Food Saf. Secur. 2021, 5 (1), 11-18