Technical Efficiency of Tilapia Production in Malawi And China: Application of Stochastic Frontier Production Approach

Phiri, Francis; Yuan, Xinhua

doi:10.4172/2155-9546.1000532

Cited by 6 publications

(3 citation statements)

References 34 publications

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“…There have also been reports of recent growth in this activity in northern provinces such as Shandong and Beijing, though higher production costs are incurred due to the need for electricity to maintain breeding tanks warm [24]. A study conducted by Phiri and Yuan [25] revealed that most of the country's facilities operate with high technological efficiency. However, it is estimated that average yields could increase by up to 9% through improvements in fish feeding and training of workers to adopt more effective resource management and strategies [23].…”

Section: China: a Process Of Refinement Of Production Techniquementioning

confidence: 99%

Advances in Tilapia farming: Statistical Analysis of the Use of Probiotics and Assessment of their Potentials and Challenges

Pereira,

Reis,

Villasante

et al. 2023

Preprint

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Data regarding the pandemic's impact on tilapia culture remain limited, but it is known that there was a significant decline in production and marketing since 2020. The post-pandemic challenges confronting tilapia farming necessitate prompt solutions, encompassing the management of bacterial infections and the adoption of more advanced technologies by small-scale producers in developing nations. Probiotics, acknowledged as a viable alternative, are presently extensively employed in tilapia aquaculture. Multiple studies have suggested that the application of diverse probiotics in tilapia culture has yielded favorable outcomes. Nonetheless, only a limited number of studies have employed statistical methods to evaluate such findings. To address this gap, a regression analysis was carried out to investigate the existence of a linear relationship between the probiotic dosage added to the feed and two key dependent variables: the specific growth rate (SGR) and the feed conversion ratio (FCR). Additionally, a hierarchical regression analysis was undertaken to ascertain the extent to which the variance observed in these responses could be explained by the variable "probiotic dosage in feed," after accounting for covariates such as initial weight, test duration, water temperature, and number of replicate tanks. Finally, two Pearson correlation matrices were constructed since different studies were included for the SGR and FCR analyses.

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Section: China: a Process Of Refinement Of Production Techniquementioning

confidence: 99%

Advances in Tilapia farming: Statistical Analysis of the Use of Probiotics and Assessment of their Potentials and Challenges

Pereira,

Reis,

Villasante

et al. 2023

Preprint

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“…The estimation of elasticity provides the responsiveness of the fish catch to the percentage change in the given inputs [18,19,21,23,29,50,61,75]. Fishing inputs variables of bunt area, mesh size, labour, fuel, and LED bulbs had an elasticity scale of 3.25, −1.03, −0.08, 0.15, and 2.01, respectively (Table 8).…”

Section: Chilimira Fisher Input Elasticitymentioning

confidence: 99%

Are Chilimira Fishers of Engraulicypris sardella (Günther, 1868) in Lake Malawi Productive? The Case of Nkhotakota District

Simfukwe

Limuwa

Njaya³

2022

Sustainability

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An ecological shift has populated Engraulicypris sardella as a livelihood and economic drive among fishers in Malawi. However, the paucity of biological information regarding E. sardella limits the effective monitoring and sustainable management of the fishery. This has created a heavily invested fishery in terms of the effort put into fishing, but it is poorly managed. Moreover, the current production capacity from the fishery has a negligible impact on lessening the shortfall of the national fish demand, indicating its underperformance. Therefore, the productive efficiency of Lake Malawi Chilimira fishers in exploiting E. sardella was analysed. A multi-stage sampling technique was used to sample 355 Chilimira fishers between July and October 2021. Results from the translog stochastic frontier model revealed that Chilimira fishers had an overall mean technical efficiency of 60% that ranged between 21% and 92%. This indicates that Chilimira fishers are 40% technically inefficient in exploiting E. sardella. The fishing inputs of bunt area, light emitting diode (LED) bulbs, and mesh size significantly contributed to technical efficiency, whereas boat size, fishing depth, number of hauls, and mosquito net lining significantly reduced the technical inefficiency. On average, the Chilimira fishery is operating with increasing returns to scale with bunt area, the quantity of fuel (litres), and the number of LED bulbs having positive input–output elasticity. This means that new developments in the fishery, including LED bulbs, increased bunt area, and boat size, are key factors that will improve fishing efficiency for sustainable fishery exploitation. In contrast, illegal fishing units of small bunt mesh size and mosquito net lining at the bunt threaten the sustainability of the fishery. It is, therefore, important that relevant stakeholders put policy measures in place that promote sustainable fishing effort approaches in exploiting the virgin offshore fishery to maximise catch.

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“…Recent growth in activity in northern provinces such as Shandong and Beijing has also been reported; however, due to the need to provide electricity to keep breeding tanks warm, production costs are higher (Xu and Ming, 2018). A study by Phiri and Yuan (2018) revealed that most of the country's facilities operate with high technological efficiency; however, average yield is estimated to increase by up to 9% through improvements in fish feeding and training to instruct workers to adopt more effective resource management and strategies (Yuan et al, 2020). To maintain a balance between the domestic and international markets, the Chinese government encourages storage and trade of part of the production from the southern to the north provinces, avoiding product shortages (Xu and Ming, 2018).…”

Section: China: a Process Of Refinement Of Production Techniquesmentioning

confidence: 97%

Isolation and identification of bacteriocin-producing probiotic lactic acid bacteria from the rainbow trout (>i<Oncorhynchus mykiss>/i<): activity against >i<Flavobacterium psychrophilum>/i<

Pereira¹

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Technical Efficiency of Tilapia Production in Malawi And China: Application of Stochastic Frontier Production Approach

Cited by 6 publications

References 34 publications

Advances in Tilapia farming: Statistical Analysis of the Use of Probiotics and Assessment of their Potentials and Challenges

Advances in Tilapia farming: Statistical Analysis of the Use of Probiotics and Assessment of their Potentials and Challenges

Are Chilimira Fishers of Engraulicypris sardella (Günther, 1868) in Lake Malawi Productive? The Case of Nkhotakota District

Isolation and identification of bacteriocin-producing probiotic lactic acid bacteria from the rainbow trout (>i<Oncorhynchus mykiss>/i<): activity against >i<Flavobacterium psychrophilum>/i<

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