poster for ruforum biennial conference

Poster template by ResearchPosters.co.za NUTRITIONAL VALUE OF SPENT OYSTER MUSHROOM SUBSTRATES AND PERFORMANCE OF SMALLSTOCK FED SPENT SUBSTRATES BASED DIETS Ntokome, K¹*, Madibela, O.R¹, Khonga, E.B², Balole, T.V² and Marumo, D.S³ ¹Department of Animal Science and Production ²Department of Crop science and production ³Department of Agricultural Economics, Education and Extension Botswana University of Agriculture and Natural resources, P/Bag 0027 Gaborone [email protected] Message Current scenario: low grain yields, poor quality residues in small scale farms Research thrust and innovation Shortage of browse and grass during the winter season is a major problem that affect the productivity of small stock in Botswana. Small scale cereal farmers normally allow their small stock to feed on residues in situ or harvested and incorporated into feeds. Crop residues are nutritionally poor due to high lignin content which affect digestibility. Oyster mushrooms degrade lignin and cellulose resulting in improved digestibility of crop residues (Akinfemi et al., 2010). Production of oyster mushrooms by small- scale farmers can drastically improve farm income as well as quality of residues. Sorghum, millet and maize grain yields in small-scale farms average 200kg/ha resulting in a gross average income of US$50/ha (Statistics Botswana, 2014). Crop residues are an additional source of direct income when sold as feed or indirectly when consumed in situ by animals or ploughed in as manure (Madibela and Lekgari, 2005). Most small scale farmers are food insecure and Government has introduced various poverty eradication programmes in Botswana. Oyster mushrooms readily grow on cereal crop residues and fetch higher prices (up to US$10/kg) than the cereal grain and incomes of up to US$5000/ha can be realized. The spent oyster mushroom substrate (SOMS) has improved quality as small stock feed and can be sold to vegetable farmers as manure. Figure 1. Shows the current sources of income for small scale cereal farmers and potential additional income after introduction of oyster mushrooms. The study is assessing: Current residue uses and their economic value in small scale farms. Nutritional value of oyster mushrooms and of Spent oyster mushroom substrates Conclusion References Acknowledgement Akinfemi, A. Jonathan, S. G. and Adu, O. A. (2010). Improving the nutritive value of millet stover using biological treatment. Libyan Agriculture Research Center Journal International ,1: 195-201. Madibela, O. R. and Lekgari, L. A. (2005). The opportunities for enhancing the commercial value of sorghum in Botswana. Journal of Food Technology, 3: 331-335. Statistics Botswana (2014). 2012 Annual Agricultural Survey Report. Statistics, Botswana, Gaborone. http://www.cso.gov.bw Cultivation of oyster mushroom is a potential alternative source of income and employment, food production, livestock feed and the improvement of nutritional status for people in rural areas of Botswana. The drive of the research project is to assess the utilisation of crop residues as substrates derived from mushroom cultivation hence their performance on small stock. This project is funded by The Regional Universities Forum for Capacity Building in Agriculture (RUFORUM) under the Competitive Grants System (No. RU 2015 GRG133). This paper is the project’s contribution to the 5th RUFORUM Biennial Conference and African Higher Education Week 2016, Century City Conference Centre, Cape Town, South Africa, 15-21 October 2016. Figure 1. Current (Black) and potential (Green) income sources for cereal small-scale farmers in Botswana GROSS INCOME/HA Grain Residu es Animal feed US$50 US$50 Oyster mushroom Spent substrate US$500 0 US$? ? US$?? Farm

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Page 1: Poster for RUFORUM Biennial conference

Poster template by ResearchPosters.co.za

NUTRITIONAL VALUE OF SPENT OYSTER MUSHROOM SUBSTRATES AND PERFORMANCE OF SMALLSTOCK FED SPENT SUBSTRATES BASED DIETS

Ntokome, K¹*, Madibela, O.R¹, Khonga, E.B², Balole, T.V² and Marumo, D.S³ ¹Department of Animal Science and Production ²Department of Crop science and production ³Department of Agricultural Economics, Education and Extension Botswana University of Agriculture and Natural resources, P/Bag 0027 Gaborone [email protected]

MessageCurrent scenario: low grain yields, poor quality

residues in small scale farms Research thrust and innovation

Shortage of browse and grass during the winter season is a major problem that affect the productivity of small stock in Botswana.

Small scale cereal farmers normally allow their small stock to feed on residues in situ or harvested and incorporated into feeds.

Crop residues are nutritionally poor due to high lignin content which affect digestibility.

Oyster mushrooms degrade lignin and cellulose resulting in improved digestibility of crop residues (Akinfemi et al., 2010).

Production of oyster mushrooms by small-scale farmers can drastically improve farm income as well as quality of residues.

Sorghum, millet and maize grain yields in small-scale farms average 200kg/ha resulting in a gross average income of US$50/ha (Statistics Botswana, 2014).

Crop residues are an additional source of direct income when sold as feed or indirectly when consumed in situ by animals or ploughed in as manure (Madibela and Lekgari, 2005).

Most small scale farmers are food insecure and Government has introduced various poverty eradication programmes in Botswana.

Oyster mushrooms readily grow on cereal crop residues and fetch higher prices (up to US$10/kg) than the cereal grain and incomes of up to US$5000/ha can be realized.

The spent oyster mushroom substrate (SOMS) has improved quality as small stock feed and can be sold to vegetable farmers as manure.

Figure 1. Shows the current sources of income for small scale cereal farmers and potential additional income after introduction of oyster mushrooms. The study is assessing:

Current residue uses and their economic value in small scale farms.

Nutritional value of oyster mushrooms and of Spent oyster mushroom substrates

Conclusion References Acknowledgement Akinfemi, A. Jonathan, S. G. and Adu, O. A. (2010). Improving the nutritive value of millet stover using biological treatment. Libyan Agriculture Research Center Journal International ,1: 195-201.

Madibela, O. R. and Lekgari, L. A. (2005). The opportunities for enhancing the commercial value of sorghum in Botswana. Journal of Food Technology, 3: 331-335.

Statistics Botswana (2014). 2012 Annual Agricultural Survey Report. Statistics, Botswana, Gaborone. http://www.cso.gov.bw

Cultivation of oyster mushroom is a potential alternative source of income and employment, food production, livestock feed and the improvement of nutritional status for people in rural areas of Botswana. The drive of the research project is to assess the utilisation of crop residues as substrates derived from mushroom cultivation hence their performance on small stock.

This project is funded by The Regional Universities Forum for Capacity Building in Agriculture (RUFORUM) under the Competitive Grants System (No. RU 2015 GRG133). This paper is the project’s contribution to the 5th RUFORUM Biennial Conference and African Higher Education Week 2016, Century City Conference Centre, Cape Town, South Africa, 15-21 October 2016.

Figure 1. Current (Black) and potential (Green) income sources for cereal small-scale farmers in Botswana

GROSS INCOME/HA

Grain

ResiduesAnimal feed

US$50 US$50

Oyster mushroomSpent substrate

US$5000

US$?? US$??

Farm

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