Low-trophic-level fish are a crucial source of long-chain (LC) omega-3 fatty acids for farmed fish and humans. Many farm-raised fish species have a clear need for these nutrients. Farmed fish deposit the LC omega-3s in their flesh and transfer them up the food chain. However, the content of LC omega-3s in farm-raised seafood continues to decline, while the content of shorter-chain plant-sourced...

Garrett et al's recent letter (2013 Environ. Res. Lett.8 044055) shows the trade value of Brazil's production of non-genetically modified (GM) crops, and argues that production for this niche market laid the foundation for the expansion of a variety of non-GM and eco-certification systems. We argue that the conditions underlying the development and perpetuation of the non-GM certification syste...

The dairy industry in northern Victoria faced dramatic changes between 2001/02 and 2002/03. Drought resulted in a substantial decrease in availability, and subsequent increase in price, of irrigation water and supplementary feed. Most farms recorded substantial net cash flow deficits. Prior to 2002/03, a project had been established using case studies and a spreadsheet model to examine potentia...

In this study, we examine the distributional effects of research versus consumer promotion. A few years ago, a notable article by Wohlgenant (AJAE 75, 1993) investigated this issue and concluded that producers would benefit more from research on farm-level production than from research on marketing services and promotion. His findings have drawn important policy implications for the allocation ...

the effects of cutting subsidy on broiler production in kerman province were investigated after privitization. in this regard a random sample of 32 poultry farms in kerman were chosen and the farmers were interviewed. the unit- output - price profit function model was used to determine the supply and demand elasticity of broider products. the results show that the profit of poultry farms increa...

The Australian Government is meeting the challenge of water scarcity and climate change through significant on-farm infrastructure investment to increase water use efficiency and productivity, and secure longer term water supplies. However, it is likely that on-farm infrastructure investment will alter energy consumption and therefore generate considerable greenhouse gas (GHG) emissions, sugges...

Studies of entrepreneurship in the developing world have largely focused on understand­ ing barriers to the expansion of existing microenterprises. Using data from a unique panel of coffee-farming households in Tanzania, we show that intermittent, low-capital entrepreneurial activity in fact plays an important, and hitherto ignored, role as a smooth­ ing mechanism in response to shocks to agric...

The objective of this study was to assess behavior patterns in Brazilian farm milk prices. We employed a structural time series techniques model, the Unobserved Component Model (UCM), which is part family State Space models, trend, seasonality, cyclical behavior, and impacts exogenous regressors on aggregated price Brazil from January 2005 December 2019. tested five alternative models with diff...