The nutritional feed gap: Seasonal variations in ruminant nutrition and knowledge gaps in relation to food security in Southern Africa

Andrew S. Cooke (), Honest Machekano, Lovemore C. Gwiriri, Jonathan H. I. Tinsley, Gleise M. Silva, Casper Nyamukondiwa, Andrew Safalaoh, Eric R. Morgan and Michael R. F. Lee
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Andrew S. Cooke: University of Lincoln
Honest Machekano: Botswana International University of Science and Technology
Lovemore C. Gwiriri: Coventry University
Jonathan H. I. Tinsley: Queen’s University Belfast
Gleise M. Silva: University of Alberta
Casper Nyamukondiwa: Botswana International University of Science and Technology
Andrew Safalaoh: Lilongwe University of Agriculture and Natural Resources
Eric R. Morgan: Queen’s University Belfast
Michael R. F. Lee: Harper Adams University

Food Security: The Science, Sociology and Economics of Food Production and Access to Food, 2025, vol. 17, issue 1, No 6, 73-100

Abstract: Abstract Livestock production is critical to food security and rural livelihoods across Southern Africa. Despite progress in livestock science research in recent years, the seasonal availability and quality of feed remains one of the key challenges to livestock productivity in Southern Africa. In particular, dry weather conditions, the lack of rain and lower temperatures in the dry season cause herbaceous plants to die back and browse species to defoliate, limiting the abundance, quality, and variety of feed available. This creates a ‘Nutritional Feed Gap’, defined here as the combined effect of the sharp reduction in both forage quantity and quality from the wet to the dry season and the risk that it poses to ruminant production systems and the food security of the people and communities reliant on them. Understanding the nature and extent of how seasonality impacts ruminant production potential can thus contribute towards mitigating negative impacts of extreme weather and climate change on food systems. In this review, we characterise this nutritional feed gap in terms of forage abundance and nutrition as well as discussing how climate change may shape the future nutritional landscape. Whilst some forage nutrient concentrations varied little by season, crude protein and phosphorus were consistently found to decrease from the wet season to the dry season. We also identify a shortfall in primary research that assess both forage quality and quantity simultaneously, which forms part of a broader knowledge gap of our limited understanding of the impact of limiting factors to ruminant production on short and long-term food security across Southern Africa.

Keywords: Livestock; Sustainability; Food security; Animal nutrition; Animal health; Goat; Smallholder (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1007/s12571-024-01509-1

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