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Sustainability 2017, 9(7), 1089; doi:10.3390/su9071089

The Potential of Animal By-Products in Food Systems: Production, Prospects and Challenges

1
Department of Livestock and Pasture Science, University of Fort Hare, Private Bag X314, Alice 5700, South Africa
2
Dohne Agricultural Development Institute, Department of Rural Development and Agrarian Reform, Private Bag X15, Stutterheim 4935, South Africa
*
Author to whom correspondence should be addressed.
Received: 9 May 2017 / Revised: 7 June 2017 / Accepted: 16 June 2017 / Published: 22 June 2017
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Abstract

The consumption of animal by-products has continued to witness tremendous growth over the last decade. This is due to its potential to combat protein malnutrition and food insecurity in many countries. Shortly after slaughter, animal by-products are separated into edible or inedible parts. The edible part accounts for 55% of the production while the remaining part is regarded as inedible by-products (IEBPs). These IEBPs can be re-processed into sustainable products for agricultural and industrial uses. The efficient utilization of animal by-products can alleviate the prevailing cost and scarcity of feed materials, which have high competition between animals and humans. This will also aid in reducing environmental pollution in the society. In this regard, proper utilization of animal by-products such as rumen digesta can result in cheaper feed, reduction in competition and lower cost of production. Over the years, the utilization of animal by-products such as rumen digesta as feed in livestock feed has been successfully carried out without any adverse effect on the animals. However, there are emerging gaps that need to be further addressed regarding the food security and sustainability of the products. Therefore, the objective of this review highlights the efficacy and effectiveness of using animal by-products as alternative sources of feed ingredients, and the constraints associated with their production to boost livestock performance in the industry at large. View Full-Text
Keywords: animal by-products; environmental pollution; feed; livestock; rumen digesta; utilization; food security; sustainability animal by-products; environmental pollution; feed; livestock; rumen digesta; utilization; food security; sustainability
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Alao, B.O.; Falowo, A.B.; Chulayo, A.; Muchenje, V. The Potential of Animal By-Products in Food Systems: Production, Prospects and Challenges. Sustainability 2017, 9, 1089.

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