Spatial price transmission in the onion markets of Bangladesh: An application of NARDL approach.

As the price of local onions is greatly impacted by the price of imported onions at these two levels of the supply chain, the goal of this study was to ascertain whether onion prices in Bangladesh are transmitted asymmetrically at the wholesale and retail levels. To analyze asymmetry, the study employed the nonlinear autoregressive distributed lag (NARDL) model in the short and long run using monthly time series data from January 2006 to December 2020. The NARDL model captures the effects of both positive and negative shocks in the short as well as in the long run. The empirical results from the NARDL indicate that the wholesale price of local onion shares a short-run relationship with the wholesale price of imported onion while the local retail price of onion shares a long-run relationship with the imported retail price of onion. In addition, the short-run impact of local wholesale and imported wholesale prices is asymmetric. Long-run evidence supports the existence of an asymmetric effect between the local and imported retail onion prices. Using the Pairwise Granger causality test, we examined the causal relationships between wholesale and retail prices. The direction of the casual relationship indicates that the wholesale and retail prices of imported onions lead to the wholesale and retail prices of local onions. A clear understanding of the onion market, how prices move between market actors, and its role in determining market price interaction could be gained by analyzing the asymmetric relationship between the local and imported onion prices. As a result, significant policy recommendations could be made to control the onion price in Bangladesh.

Assessing the factors and constraints for value chain development of dairy food products in Bangladesh.

The dairy sector in Bangladesh has shifted from subsistence to commercial and enterprise-driven due to the increasing demand of milk and milk products. In this context, this study was conducted to explore the different participants in dairy value chains and their role in the production, processing and marketing of dairy products. This study addresses the constraints faced by these participants and the factors influencing the value chain efficiency as a case study from Bogura districts of Bangladesh. The Bogura district was selected purposively considering the most potential geographical area of dairy farming. Face-to-face surveys were conducted to collect data during January to April 2019 using two sets of well-designed questionnaires. Multiple regression models were analyzed for the factors affecting the value addition of selected dairy food products. Moreover, Kendall's coefficient of concordance was applied for identifying the constraints faced by dairy products value chain actors. The empirical findings showed that processors of dairy food products added the highest value among all the actors involved in the value chain. Furthermore, the findings revealed that gender, education, purchase price, and sale price significantly influenced the value addition of processed dairy products (yogurt and ghee) value chain. The findings also revealed that the most untiring constraints faced by the market actors were the lack of capital and credit facilities, insufficient storage facilities, lack of processing center, and lack of proper transportation facilities. The findings of this study can help the stakeholders to improve the policy measures towards developing a new market for the dairy food products which might result in high value added, domestic, and export oriented dairy industry.

Empirical assessment of onion supply chain constraints in Bangladesh: A pre-covid to covid situation.

In Bangladesh, Covid-19 has wrecked devastation on people's livelihoods and economies. It began with supply chain disruptions affecting a variety of agricultural products, particularly perishable ones. Onion, the most consumed species in Bangladesh and Asia is also fallen into that category. The goal of this study was to shed light on the current onion supply chain as well as the constraints faced by the actors in Bangladesh's major onion-producing area markets (i.e., Pabna, Rajshahi, and Chapainawabganj). The extent to which pre-existing constraints on market actors of onion were discovered and distinguished in pre-covid to covid conditions. The backward supply chain analysis revealed that the local market seller supplied the majority of necessary farm inputs (i.e., seed, seedlings, and fertilizer). Wholesalers, commission agents (aratdars), local wholesalers (beparies), and retailers were all involved in forward connecting. Producers received roughly 71% of the retail price (0.76/kg), followed by retailers (BDT 2.07/kg), wholesalers (BDT 1.22/kg), commission agents (aratdars) (BDT 0.85/kg), and independent wholesalers (beparies) (BDT 0.36/kg). Moreover, a constraint factor index and econometric analysis were utilized to determine the most critical constraints and their influencing factors. Obstacles to onion production and commercialization ranged from moderate (66%) to severe (33.5%), with a few being fairly severe (0.5%). The paucity of high-quality seed, the cost and difficulty of timely transportation, and the market's inaccessibility to government intervention were all significant drawbacks to increased onion output. The primary impediments to onion marketing were a lack of or inability to receive marketing expertise, frequent demand fluctuations, and an insufficient storage facility for other market intermediaries. The findings of the study can assist in establishing a dynamic policy framework that includes procedure for expanding market infrastructure, rehabilitating current onion market actors through adequate training, assuring information abundance, and rapidly addressing market mishaps for ensuring sustainability.

Emergence of colistin-resistant Escherichia coli in poultry, house flies, and pond water in Mymensingh, Bangladesh.

OBJECTIVE: Emergence of colistin-resistant Escherichia coli (CREC) has generated a sense of public alarm. The objective of this study was to detect the CREC and identification of the gene responsible for such resistance. MATERIALS AND METHODS: A total of 150 samples comprising poultry cloacal swab, house flies (Musca domestica), and pond water were collected randomly from Mymensingh, Bangladesh and analyzed. Isolation and identification of E. coli were done based on culture and E. coli 16S rRNA gene-specific polymerase chain reaction (PCR). Phenotypic detection of CREC was done by disk diffusion method. Finally, colistin resistance genes were detected by PCR by using colistin resistant gene mcr3 specific primers. RESULTS: Among the 150 samples, phenotypically 18.00% (n = 27/150) isolates were found as colistin resistant. By PCR, 8.00% of the E. coli isolates were found positive for the presence of mcr3 gene. CONCLUSIONS: Colistin resistant E. coli carrying mcr3 are detected in poultry, house flies and water that are of great public health concern.

Method for isolating pure bovine gonadotrophs from anterior pituitary using magnetic nanoparticles and anti-gonadotropin-releasing hormone receptor antibody.

No methods are currently available for rapidly isolating gonadotrophs from the anterior pituitary (AP) in any species. We developed a method for preparing pure bovine gonadotrophs from a heterogeneous AP cell mixture by magnetic separation and our original antibody against the N terminus of bovine gonadotropin-releasing hormone receptor (GnRHR). A bovine AP cell mixture was incubated with the anti-GnRHR antibody, anti-dextran antibody-conjugated secondary antibody and dextran-coated magnetic nanoparticles for magnetic isolation. Approximately 5.2 × 106 cells were isolated per AP of Japanese Black heifers (26 months of age) and cultured, and confocal microscopy confirmed to be GnRHR- and luteinizing hormone-positive, corresponding to a purity of 100%. Approximately 44.5 µg of total protein was extracted from the pure gonadotrophs per AP.