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SUSTAINABLE FOOD PRODUCTION

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Presentation on theme: "SUSTAINABLE FOOD PRODUCTION"— Presentation transcript:

1 SUSTAINABLE FOOD PRODUCTION
© 2016 Paul Billiet ODWS

2 World population 2015… © 2016 Paul Billiet ODWS

3 …and in 2050 © 2016 Paul Billiet ODWS

4 Global food production
© 2016 Paul Billiet ODWS DAVID TILMAN Proc. Natl. Acad. Sci. USA Vol. 96, pp. 5995–6000, May 1999

5 Can we keep this up? © 2016 Paul Billiet ODWS © P Billiet

6 The challenges The food gap Land use and biodiversity
Crop and pasture yield Climate change Fisheries. © 2016 Paul Billiet ODWS

7 Can agriculture respond?
© 2016 Paul Billiet ODWS © P Billiet

8 Feed Conversion Ratio (FCR)
The efficiency at converting feed mass into product Cattle: Between 5:1 (on concentrates) and 20:1 (on rangeland) Pigs: 3.0 to 3.2:1 Sheep: 4-6:1 Poultry: 2:1 Crickets: 1.7:1 Meal worms: 2.2:1 Fish: :1 Rabbits: :1 © 2016 Paul Billiet ODWS

9 But is this realistic? Catfish aquaculture Feed 5925kg Fish 2783 kg
FCR = 2.1:1 But only the flesh is eaten Catfish fillets 384kg FCR = 16.6:1 © 2016 Paul Billiet ODWS

10 But is this realistic? Soybean production (US) for concentrates
Energy cost Input (labour, fuel, fertilizer, pesticides, transport) kJ ha-1 Output (grain harvest) kJ ha-1 © 2016 Paul Billiet ODWS

11 Beef FCR FCR Concentrates 5:1 Rangeland 20:1 Fossil fuel consumption
Rangeland kJ ha-1 Concentrates kJ ha-1 © 2016 Paul Billiet ODWS

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