RATION FORMULATION SPRING 2018

Activity…… Label the following: Divide Paper into 10 equal pieces - On Board Intro Expect. Activity Trans. Tomorr-ow Finish ANIMAL SCIENCE MANAGEMENT

Transition from Feed Analysis to: Maximize Profit Balancer Least Cost What information do we need to obtain to put together a ration? Intro Expect. Activity Trans. Tomorr-ow Finish ANIMAL SCIENCE MANAGEMENT

Calculating Forage Dry Matter Intake: EXAMPLE Calculating Forage Dry Matter Intake: a. poor quality hay at 57% NDF b. Animal Weight of 1400 lbs Equation: (Weight X.009) / NDF = Forage DM YOUR TURN Calculating Forage Dry Matter Intake: a. good quality hay at 38% NDF b. Animal Weight of 1320 lbs Equation: (Weight X.009) / NDF = Forage DM ANIMAL SCIENCE MANAGEMENT

Fat Corrected Milk EXAMPLE A: Animal milking 102 lbs YOUR TURN B: Animal has 3.8% Fat Test Equation – (milk lbs X.4) + (Milk lbs X Fat test) (15) YOUR TURN A: Animal milking 86 lbs B: Animal has 4.2% Fat Test Equation – (milk lbs X.4) + (Milk lbs X Fat test) (15) ANIMAL SCIENCE MANAGEMENT

Milk Yield/Lact EXAMPLE A: Cow producing 82 lbs YOUR TURN B: Cow producing 165 lbs Equation lbs X 200 = milk yield per lact YOUR TURN A: Cow producing 97 lbs B: Cow producing 105 lbs Equation lbs X 200 = milk yield per lact ANIMAL SCIENCE MANAGEMENT

Estimating Total Water Intake A: DMI – 56 lbs B: Milk lbs – 98 C: Grams of Sodium: 56g D: Current temp is 83 degrees Equation: 4.22 + (DMI X.189) + (Milk X .108) + (Sodium X.0132) + (Degrees X .176) EXAMPLE A: DMI – 49 lbs B: Milk lbs – 76 C: Grams of Sodium: 33g D: Current temp is 42 degrees Equation: 4.22 + (DMI X.189) + (Milk X .108) + (Sodium X.0132) + (Degrees X .176) YOUR TURN ANIMAL SCIENCE MANAGEMENT

Estimating DMI EXAMPLE 1357 lb dairy cow 91 lbs of production (not fat corrected) 4.2% fat test Equation: (.018 X body weight) + (4% FCM x .305) YOUR TURN 1266 lb dairy cow 83 lbs of production (not fat corrected) 4.0% fat test Equation: (.018 X body weight) + (4% FCM x .305) ANIMAL SCIENCE MANAGEMENT