PROBLEM 2 Using simultaneous equations, formulate a daily ration for a 500 kg cow nursing a calf (first 3-4 months postpartum). Balance for CP and ME. Use dical and limestone to balance for Ca and P. How much barley, coastal hay, dical, and limestone, must be fed daily on an as-fed basis? Step 1: Animal Requirements (DM basis) ME, Mcal/kg CP, kg/d Ca, kg/d P, kg/d 21.5 0.92 0.03 0.01 Step 2: Feedstuff Composition (DM basis) Ingredient ME, DM, % Mcal/kg CP% Ca, % P, % Cost/ton (As Fed) Barley 88 3.9 11.2 0.03 0.35 $250 Coastal Hay 86 2.1 15.5 0.45 0.12 $145 Dicalcium Phosphate 97 22.0 18.5 Limestone 100 39.0 --- -- Step 3: Set up the simultaneous equations: Step 4: Multiply to get rid of one variable: Step 5 and 6: Subtract and solve for y: Step 7: Substitute and solve for x: Step 8 - 10: Check your work, check Ca and P and find the difference between total and requirement: Ca in Amt in Diet, kg Feed CP, % Dict CP, kg Feed ME, Mcal/kg Dict ME Meal Cain Feed, % Pin Food, % Pin Dict kg Diet, kg Ingredients Barley Coastal Hay --- --- --- --- TOTAL kgs 1 1 Required . . -- --- Difference Step 11: Add dicalcium phosphate and limestone as needed: Step 12: Check your final ration: Amt in Diet, kg Feed CP, % Diet CP, kg Feed ME, Mealkg Diet ME Meal Ca in Feed, % Cat in Diet, kg Pin Feed, % P in Diet, kg Ingredients Barley Coastal Hay Dicalcium Phosphate --- 1 1 -- Limestone - TOTAL -- 1 1 1 kgs . - Required . --- Step 13. Convert your final amounts ki to As-Fed Basis Barley ky Coastal Play ky PROBLEM 2 Using simultaneous equations, formulate a daily ration for a 500 kg cow nursing a calf (first 3-4 months postpartum). Balance for CP and ME. Use dical and limestone to balance for Ca and P. How much barley, coastal hay, dical, and limestone, must be fed daily on an as-fed basis? Step 1: Animal Requirements (DM basis) ME, Mcal/kg CP, kg/d Ca, kg/d P, kg/d 21.5 0.92 0.03 0.01 Step 2: Feedstuff Composition (DM basis) Ingredient ME, DM, % Mcal/kg CP% Ca, % P, % Cost/ton (As Fed) Barley 88 3.9 11.2 0.03 0.35 $250 Coastal Hay 86 2.1 15.5 0.45 0.12 $145 Dicalcium Phosphate 97 22.0 18.5 Limestone 100 39.0 --- -- Step 3: Set up the simultaneous equations: Step 4: Multiply to get rid of one variable: Step 5 and 6: Subtract and solve for y: Step 7: Substitute and solve for x: Step 8 - 10: Check your work, check Ca and P and find the difference between total and requirement: Ca in Amt in Diet, kg Feed CP, % Dict CP, kg Feed ME, Mcal/kg Dict ME Meal Cain Feed, % Pin Food, % Pin Dict kg Diet, kg Ingredients Barley Coastal Hay --- --- --- --- TOTAL kgs 1 1 Required . . -- --- Difference Step 11: Add dicalcium phosphate and limestone as needed: Step 12: Check your final ration: Amt in Diet, kg Feed CP, % Diet CP, kg Feed ME, Mealkg Diet ME Meal Ca in Feed, % Cat in Diet, kg Pin Feed, % P in Diet, kg Ingredients Barley Coastal Hay Dicalcium Phosphate --- 1 1 -- Limestone - TOTAL -- 1 1 1 kgs . - Required . --- Step 13. Convert your final amounts ki to As-Fed Basis Barley ky Coastal Play ky
