2. (10 pts) Formulate a ration for a pen of gestating sows in their 3rd trimester that contains 16% CP, DM basis and 69% TDN DM basis. The ingredients to be used are cracked corn (8% CP DM basis and 81% TDN DM basis), wheat middlings (14% CP DM basis and 78% TDN DM basis), and canola meal (30% CP DM basis and 36% TDN DM basis). Use the Simultaneous equation.

b. (3 pts) Ground corn, wheat middlings, and canola meal contain 93, 89, and 88% DM, respectively. What is the ingredient composition of the diet on an as-fed basis?

c. (3 pts) How much of each feedstuff will be needed to make 3.5 tons of mixed feed (AF basis

d. (4 pts) These sows need 18.8 g of Calcium (AF) daily along with 16.7 g (AF) of Phosphorus per sow/day. These sows are on average fed 8.9 lbs./sow of this mix.

Ground corn = .03% Ca, .28% P

Wheat Middlings= .12% Ca, .93% P

Canola Meal= .63%Ca, 1.01% P

e. (2 pts) Do they meet their requirements? What is the Ca:P ratio? Is this an acceptable ratio?