Browsing by Author "Kilima, F. T."

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Field assessment of rapid market estimation techniques: a case study of dairy value chains in Tanzania
(African Journal of Agricultural and Resource Economics, 2015) Coles, C. F.; Kilima, F. T.; Mvena, Z. S.; Ngetti, M.; Akyoo, A.; Nombo, C.
Three rapid market estimation techniques were used to quantify the informal milk market in two Tanzanian municipalities, namely Iringa and Tanga, with reference to producer-based estimates, retailer-based estimates and a stratified consumer survey. The nature of the milk market systems in the two study areas was reflected in the magnitude and dynamics of milk consumption; the informal market was particularly important for a ‘subject to deprivation’ group in both cases. Producer-based estimates did not account for milk from outside the study area, whereas retail surveys omitted details of the producers’ own consumption and their direct sales. Consumer surveys captured the widest variety of informal milk sources but, like retail studies, omitted producers’ consumption. Therefore the most accurate rapid estimation of markets for consumable products may be obtained by triangulating producer data with consumer surveys (informal market) and adding reliable (and usually relatively easily obtained) data from processors and retailers to capture trade through formal channels.
The influence of incentives in eliminating hypothetical bias: Evidence from a choice-based conjoint experiment for beef products in Iringa and Mbeya Regions in Tanzania
(2013) Nandonde, S. W.; Msuya, E. E.; Mtenga, L. A.; Kilima, F. T.; Alphonce, R.
Consumer responses were observed for a within-sample comparison of preference and willingness-to pay (WTP) estimates for tenderness, leanness, freshness and hygiene for beef products from finished cattle and non-finished cattle (status quo). This comparison was conducted through two sessions of repeated choice-based conjoint experiments (CBC), starting with a hypothetical choice-based conjoint (HCBC) experiment that involved cheap talk only followed by a real choice-based conjoint (RCBC) experiment that involved the actual purchase of experimental products with real money. Consumers prefer more tender, less fatty, chilled beef and clean retailing premises, regardless of the choice session; however, the estimated coefficients were not equal (p<0.001). The selection was motivated by alternatives in HCBC where finished beef constituted 76% of all choices made. The selection of finished beef dropped to 67% in RCBC where consumers were sensitive to the price and quality content of alternative products. Consumers overestimate the WTP for hygiene in HCBC (p=0.014); however, there are no significant differences in WTP estimates for other attributes. Therefore, it is concluded that monetary incentives can reduce hypothetical choice bias and provide more trustworthy WTP estimates for all attributes. Key words: Beef, fini
The influence of incentives in eliminating hypothetical bias: Evidence from a choice-based conjoint experiment for beef products in Iringa and Mbeya regions in Tanzania
(Journal of Agricultural Economics and Development, 2013) Nandonde, S. W.; Msuya, E. E.; Mtenga, L. A.; Kilima, F. T.; Alphonce, R.
Consumer responses were observed for a within-sample comparison of preference and willingness-to-pay (WTP) estimates for tenderness, leanness, freshness and hygiene for beef products from finished cattle and non-finished cattle (status quo). This comparison was conducted through two sessions of repeated choice-based conjoint experiments (CBC), starting with a hypothetical choice-based conjoint (HCBC) experiment that involved cheap talk only followed by a real choice-based conjoint (RCBC) experiment that involved the actual purchase of experimental products with real money. Consumers prefer more tender, less fatty, chilled beef and clean retailing premises, regardless of the choice session; however, the estimated coefficients were not equal (p<0.001). The selection was motivated by alternatives in HCBC where finished beef constituted 76% of all choices made. The selection of finished beef dropped to 67% in RCBC where consumers were sensitive to the price and quality content of alternative products. Consumers overestimate the WTP for hygiene in HCBC (p=0.014); however, there are no significant differences in WTP estimates for other attributes. Therefore, it is concluded that monetary incentives can reduce hypothetical choice bias and provide more trustworthy WTP estimates for all attributes.