Database Schema.

A feed sample weighted 20g before going into a 100C drying oven for 16h. After leaving the oven, the sample weighted 5g. Assuming that there were no volatile compounds, what is the DM% of this sample?

In class we discussed 7 important nutritional management goals. Please list and briefly explain 3 of these nutritional management goals.

Remember to show your calculator and scratch paper before submitting your exam 🙂 

Explain four limitations of the proximate analysis.

In the same digestion study from the previous question, the NDF concentration in the diet was 40% and the NDF concentration in the feces was 70%. What is the NDF digestibility in this diet?

List three by-products that are not protein supplements.

How much organic matter is present in a sample that has 10% water and 10% ash in an “as fed” basis?

In a digestion study, indigestible neutral detergent fiber (iNDF) was used to assess diet digestibility. The iNDF concentration in the diet was 0.5% and the iNDF concentration in the feces was 2%. What is the diet’s digestibility?

Explain the marker methodology for determining feed digestibility. Why do we need that?