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Maximizing Fishery Growth: Seasonal Nutrient Benefits in Kafue, 2005-2007

Explore the advantages of supplementary feeding for fish in the Kafue Fisheries during 2005-2007. Delve into seasonal variations in veldt quality, nutrients (including protein, energy, and phosphorus), and the theoretical benefits of such feeding. Discover how these nutrients impact fish growth, energy levels, and phosphorus utilization, leading to improved conditions and reproductive capacities. Learn from the real results, such as the increased calving rates in Lechwe and other species. Consider the costs and potential returns of this feeding strategy.

robertshelton
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Maximizing Fishery Growth: Seasonal Nutrient Benefits in Kafue, 2005-2007

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  1. Benefits of Supplementary Feeding Kafue Fisheries 2005-2007

  2. Overview • Veldt Quality (Seasonality) • Nutrients & their Functions • Theoretical Benefits • Results

  3. Veldt Quality • Define Quality?? • Energy • Protein • Minerals • Phosphorus

  4. PROTEIN ENERGY PHOSPHORUS OCT JAN APR JUL OCT JAN Seasonal Fluctuations

  5. Protein • Growth (building blocks) • Cellular Structure • Enzymes • Reproduction (Structures)

  6. Energy • Fuel for the Body • Growth and Re-growth (Condition) • Fat Reserves (Hormones) • Reproduction

  7. Phosphorus • Conduit for Energy • Bone Growth (Flux) • Nutrient Absorption • Nutrient Utilization (Vitamin activation)

  8. Theoretical Benefits • Improved Condition • Improved Appetite (Nutrient Intake) • Improved Nutrient Utilization • Improved Reproductive Capacity • Improved Control & Management • Improved Returns

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  10. Results: Lechwe

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  12. Other Species 2006 • Eland: 80% Calving • Waterbuck: 70% Calving • Wildebeest: 66% Calving

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  16. Costs • 300kg fed per day to the farm (100kg to Lechwe) • @ZK 800 per kg = ZK 80,000 per day • ZK 29.2 mil. per Annum ($6,800 p.a.) • Costs ± 5 Safari Animals • But produced an extra 20 male Lechwe • Value: $30,000

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