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Table 4 Economic analysis of using CRM in place of GNC in diets of laying hens

From: Cashew reject meal in diets of laying chickens: nutritional and economic suitability

Cost variables, Soyabean meal Groundnut cake Cashew reject meal
Actual market price 100 85.00 25.00
Relative worth 100 97.25 90.00
Av. cost of feed/kg - 59.71 50.61
Cost of feed/kg egg weight - 218.53 200.50
Cost save per tonnage of feed -   9,100
Cost save per tonnage of egg laid    18,030
  1. Equation: Relative worth of CRM (with 35.4% CP and 2800 kcal) = 354x + 2800y.
  2. Where × = 0.111 protein cost, y = 0.0183-energy cost.
  3. Obtained from: maize (8.6% CP, 3300 kcal/kgME) and soyabean meal (48%CP, 2550 kcal/kgME) as reference energy and protein ingredients respectively. Given the cost prize for maize and soyabean at the time of the experiment -₦70.00 and ₦100.00 respectively.
  4. Hence 86x + 3300y = 70------equation 1 and 480 × + 2550y = 100 -------equation 2.